Assessing isometric kicking force and post-match responses using the Kicker test

Journal article


Thomas, Rees J., Timmins, Ryan G., Tofari, Paul J., Williams, Morgan D. and Opar, David A.. (2022). Assessing isometric kicking force and post-match responses using the Kicker test. Journal of Sports Sciences. 40(11), pp. 1275-1281. https://doi.org/10.1080/02640414.2022.2065772
AuthorsThomas, Rees J., Timmins, Ryan G., Tofari, Paul J., Williams, Morgan D. and Opar, David A.
Abstract

This study examined the inter-session reliability of force output from a novel isometric strength assessment protocol (the Kicker); and its suitability to monitor soccer player’s combined hip flexion and knee extension force capacity over 72-h post-competitive matches. Reliability (Part-A) testing was completed over three sessions on 20 individuals participating in various sports at a recreational level or higher. Post-match strength response (Part-B) data were collected for 72-h after a game (24-h (+24), 48-h (+48) and 72-h (+72) post-match) in 17 male academy soccer players. After familiarisation, Kicker force for each limb showed high inter-session reliability (ICC >0.95; typical error <14 N, CV <6%); minimum detectable change at a 95% confidence interval <40 N). Across the 72-h post-match period, Kicker force for each limb was suppressed compared to baseline (force loss range = −5.8% to −12.5%; effect sizes range = −0.26 to −0.43) at all time points. The Kicker assessment protocol measures combined isometric hip flexor and knee extensor force capacity with high inter-session reliability. The proof of concept that the protocol can be used as a monitoring tool was evidenced by sustained suppression of baseline force capacity in both kicking limbs for 72-h post soccer matches.

Keywordsmuscle strength; measurement; muscle injury; quadricep
Year2022
JournalJournal of Sports Sciences
Journal citation40 (11), pp. 1275-1281
PublisherRoutledge
ISSN0264-0414
Digital Object Identifier (DOI)https://doi.org/10.1080/02640414.2022.2065772
Scopus EID2-s2.0-85132663459
Open accessPublished as green open access
Page range1275-1281
Author's accepted manuscript
License
File Access Level
Open
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online02 May 2022
Publication process dates
Accepted08 Apr 2022
Deposited10 Jan 2023
Permalink -

https://acuresearchbank.acu.edu.au/item/8y96z/assessing-isometric-kicking-force-and-post-match-responses-using-the-kicker-test

Download files


Author's accepted manuscript
AM_Thomas_2022_Assessing_isometric_kicking_force_and_post.pdf
License: CC BY-NC-ND 4.0
File access level: Open

Restricted files

Publisher's version

  • 68
    total views
  • 119
    total downloads
  • 0
    views this month
  • 1
    downloads this month
These values are for the period from 19th October 2020, when this repository was created.

Export as

Related outputs

The Effect of Eccentric or Isometric Training on Strength, Architecture, and Sprinting across an Australian Football Season
Timmins, R. G., Filopoulos, D., Giannakis, J., Nguyen, V., Ruddy, J. D., Hickey, J. T., Maniar, N., Pollard, C. W., Morgan, N., Weakley, J. and Opar, D. A.. (2024). The Effect of Eccentric or Isometric Training on Strength, Architecture, and Sprinting across an Australian Football Season. Medicine and Science in Sports and Exercise. 56(3), pp. 564-574. https://doi.org/10.1249/MSS.0000000000003326
Biceps femoris long head muscle and aponeurosis geometry in males with and without a history of hamstring strain injury
Lazarczuk, Stephanie L., Collings, Tyler J., Hams, Andrea H., Timmins, Ryan Gregory, Opar, David, Edwards, Suzi, Shield, Anthony, Barrett, Rod and Bourne, Matthew. (2024). Biceps femoris long head muscle and aponeurosis geometry in males with and without a history of hamstring strain injury. Scandinavian Journal of Medicine and Science in Sports. 34(4), pp. 1-11. https://doi.org/10.1111/sms.14619
Vertical Jump Testing after Anterior Cruciate Ligament Reconstruction : A Systematic Review and Meta-analysis
Dutaillis, Benjamin, Diamond, Laura E., Lazarczuk, Stephanie L., Timmins, Ryan Gregory and Bourne, Matthew. (2024). Vertical Jump Testing after Anterior Cruciate Ligament Reconstruction : A Systematic Review and Meta-analysis. Medicine and Science in Sports and Exercise. 56(2), pp. 181-192. https://doi.org/10.1249/MSS.0000000000003298
Validity and reliability of thoracic-mounted inertial measurement units to derive gait characteristics during running
Horsley, Benjamin, Tofari, Paul, Halson, Shona, Kemp, Justin Guy, Chalkley, Daniel Thomas, Cole, Michael Hugh, Johnston, Richard and Cormack, Stuart John. (2024). Validity and reliability of thoracic-mounted inertial measurement units to derive gait characteristics during running. Journal of Strength and Conditioning Research. 38(2), pp. 274-282. https://doi.org/10.1519/JSC.0000000000004612
Validity of Inertial Measurement Units to Measure Lower-Limb Kinematics and Pelvic Orientation at Submaximal and Maximal Effort Running Speeds
Lin, Yi-Chung, Price, Kara, Carmichael, Declan, Maniar, Nirav, Hickey, Jack Thomas, Timmins, Ryan Gregory, Heiderscheit, Bryan C., Blemker, Silvia S. and Opar, David. (2023). Validity of Inertial Measurement Units to Measure Lower-Limb Kinematics and Pelvic Orientation at Submaximal and Maximal Effort Running Speeds. Sensors. 23(23), pp. 1-16. https://doi.org/10.3390/s23239599
Hamstring strain injury risk factors in Australian Football change over the course of the season
Sim, Aylwin, Timmins, Ryan G., Ruddy, Joshua D., Shen, Haifeng, Liao, Kewen, Maniar, Nirav, Hickey, Jack T., Williams, Morgan D. and Opar, David A.. (2023). Hamstring strain injury risk factors in Australian Football change over the course of the season. Medicine and Science in Sports and Exercise. https://doi.org/10.1249/MSS.0000000000003297
The effect of feedback on resistance training performance and adaptations : A systematic review and meta-analysis
Weakley, Jonathon, Cowley, Nicholas, Schoenfeld, Brad J., Read, Dale B., Timmins, Ryan G., García-Ramos, Amador and McGuckian, Thomas B.. (2023). The effect of feedback on resistance training performance and adaptations : A systematic review and meta-analysis. Sports Medicine. 53, pp. 1789-1803. https://doi.org/10.1007/s40279-023-01877-2
The acute demands of repeated-sprint training on physiological, neuromuscular, perceptual and performance outcomes in team sport athletes : A systematic review and meta-analysis
Thurlow, Fraser, Weakley, Jonathon, Townshend, Andrew D., Timmins, Ryan G., Morrison, Matthew and McLaren, Shaun J.. (2023). The acute demands of repeated-sprint training on physiological, neuromuscular, perceptual and performance outcomes in team sport athletes : A systematic review and meta-analysis. Sports Medicine. 53, pp. 1609-1640. https://doi.org/10.1007/s40279-023-01853-w
The effect of theta burst stimulation over the primary motor cortex on experimental hamstring pain : A randomized, controlled study
Moukhaiber, Nadia, Summers, Simon J., Opar, David, Imam, Jawwad, Thomson, Daniel, Chang, Wei-Ju, Andary, Toni and Cavaleri, Rocco. (2023). The effect of theta burst stimulation over the primary motor cortex on experimental hamstring pain : A randomized, controlled study. Journal of Pain. 24(4), pp. 593-604. https://doi.org/10.1016/j.jpain.2022.11.013
The dose–response of pain throughout a Nordic hamstring exercise intervention
Behan, Fearghal P., Opar, David A., Vermeulen, Robin, Timmins, Ryan G. and Whiteley, Rodney. (2023). The dose–response of pain throughout a Nordic hamstring exercise intervention. Scandinavian Journal of Medicine & Science in Sports. 33(4), pp. 542-546. https://doi.org/10.1111/sms.14317
Reliability of corticospinal excitability and intracortical inhibition in biceps femoris during different contraction modes
Presland, Joel D., Tofari, Paul J., Timmins, Ryan G., Kidgell, Dawson J. and Opar, David A.. (2023). Reliability of corticospinal excitability and intracortical inhibition in biceps femoris during different contraction modes. European Journal of Neuroscience. 57(1), pp. 91-105. https://doi.org/10.1111/ejn.15868
Incidence and prevalence of hamstring injuries in field-based team sports : A systematic review and meta-analysis of 5952 injuries from over 7 million exposure hours
Maniar, Nirav, Carmichael, Declan, Hickey, Jack Thomas, Timmins, Ryan Gregory, San Jose, Argell Joseph, Dickson, Jessica and Opar, David. (2023). Incidence and prevalence of hamstring injuries in field-based team sports : A systematic review and meta-analysis of 5952 injuries from over 7 million exposure hours. British Journal of Sports Medicine. 57(2), pp. 109-116. https://doi.org/10.1136/bjsports-2021-104936
Hamstring strain injury rehabilitation
Hickey, Jack Th., Opar, David A., Weiss, Leigh J. and Heiderscheit, Bryan C.. (2022). Hamstring strain injury rehabilitation. Journal of Athletic Training. 57(2), pp. 125-135. https://doi.org/10.4085/1062-6050-0707.20
Poor reporting of exercise interventions for hamstring strain injury rehabilitation : A scoping review of reporting quality and content in contemporary applied research
Breed, Ray, Opar, David, Timmins, Ryan, Maniar, Nirav, Banyard, Harry and Hickey, Jack. (2022). Poor reporting of exercise interventions for hamstring strain injury rehabilitation : A scoping review of reporting quality and content in contemporary applied research. Journal of Orthopaedic and Sports Physical Therapy. 52(3), pp. 130-141. https://doi.org/10.2519/jospt.2022.10641
Muscle force contributions to anterior cruciate ligament loading
Maniar, Nirav, Cole, Michael H., Bryant, Adam L. and Opar, David A.. (2022). Muscle force contributions to anterior cruciate ligament loading. Sports Medicine. 52(8), pp. 1737-1750. https://doi.org/10.1007/s40279-022-01674-3
Effect of an isometric or eccentric hip extension exercise intervention on hamstring strength, architecture, and morphology
Carmichael, Declan S., Hickey, Jack T., Tofari, Paul J., Bourne, Matthew N., Ward, Mark R. and Timmins, Ryan G.. (2022). Effect of an isometric or eccentric hip extension exercise intervention on hamstring strength, architecture, and morphology. Medicine and Science in Sports and Exercise. 54(12), pp. 2196-2207. https://doi.org/10.1249/MSS.0000000000003012
The development of a HAMstring InjuRy (HAMIR) index to mitigate injury risk through innovative imaging, biomechanics, and data analytics : Protocol for an observational cohort study
Heiderscheit, Bryan C., Blemker, Silvia S., Opar, David, Stiffler-Joachim, Mikel R., Bedi, Asheesh, Hart, Joseph, Mortensen, Brett, Kliethermes, Stephanie A., Baer, Geoffrey, Buckley, Craig, Costigan, Kyle, Drew, Shauna, Eberhardt, Duffy, Fabian, Kurrel, Feller, Herman, Hammer, Erin, Heidt, Danielle, Lee, Kenneth, Lund, Brian, ... Sund, Sarah. (2022). The development of a HAMstring InjuRy (HAMIR) index to mitigate injury risk through innovative imaging, biomechanics, and data analytics : Protocol for an observational cohort study. BMC Sports Science, Medicine and Rehabilitation. 14(1), p. Article 128. https://doi.org/10.1186/s13102-022-00520-3
Trends in Australian knee injury rates : An epidemiological analysis of 228,344 knee injuries over 20 years
Maniar, Nirav, Verhagen, Evert, Bryant, Adam Leigh and Opar, David Andrew. (2022). Trends in Australian knee injury rates : An epidemiological analysis of 228,344 knee injuries over 20 years. The Lancet Regional Health - Western Pacific. 21, p. Article 100409. https://doi.org/10.1016/j.lanwpc.2022.100409
The dose-response of the nordic hamstring exercise on biceps femoris architecture and eccentric knee flexor strength : A randomized interventional trial
Behan, Fearghal P., Vermeulen, Robin, Whiteley, Rod, Timmins, Ryan G., Ruddy, Joshua D. and Opar, David A.. (2022). The dose-response of the nordic hamstring exercise on biceps femoris architecture and eccentric knee flexor strength : A randomized interventional trial. International Journal of Sports Physiology and Performance. 17(4), pp. 646-654. https://doi.org/10.1123/ijspp.2021-0276
Early introduction of high-intensity eccentric loading into hamstring strain injury rehabilitation
Hickey, Jack T., Rio, Ebonie, Best, Thomas M., Timmins, Ryan G., Maniar, Nirav, Hickey, Peter F., Williams, Morgan D., Pitcher, Christian A. and Opar, David A.. (2022). Early introduction of high-intensity eccentric loading into hamstring strain injury rehabilitation. Journal of Science and Medicine in Sport. 25(9), pp. 732-736. https://doi.org/10.1016/j.jsams.2022.06.002
Strength and biomechanical risk factors for noncontact ACL injury in elite female footballers : A prospective study
Collings, Tyler J., Diamond, Laura E., Barrett, Rod S., Timmins, Ryan G., Hickey, Jack T., du Moulin, William S., Williams, Morgan D., Beerworth, Kate A. and Bourne, Matthew N.. (2022). Strength and biomechanical risk factors for noncontact ACL injury in elite female footballers : A prospective study. Medicine and Science in Sports and Exercise. 54(8), pp. 1242-1251. https://doi.org/10.1249/MSS.0000000000002908
Muscle function during single leg landing
Maniar, Nirav, Schache, Anthony G., Pizzolato, Claudio and Opar, David A.. (2022). Muscle function during single leg landing. Scientific Reports. 12(1), p. Article 11486. https://doi.org/10.1038/s41598-022-15024-w
Mechanical, material and morphological adaptations of healthy lower limb tendons to mechanical loading : A systematic review and meta-analysis
Lazarczuk, Stephanie L., Maniar, Nirav, Opar, David A., Duhig, Steven J., Shield, Anthony, Barrett, Rod S. and Bourne, Matthew N.. (2022). Mechanical, material and morphological adaptations of healthy lower limb tendons to mechanical loading : A systematic review and meta-analysis. Sports Medicine. 52(10), pp. 2405-2429. https://doi.org/10.1007/s40279-022-01695-y
Hamstring and gluteal activation during high-speed overground running : Impact of prior strain injury
Bourne, Matthew N., Pollard, Chris, Messer, Daniel, Timmins, Ryan G., Opar, David A., Williams, Morgan D. and Shield, Anthony J.. (2021). Hamstring and gluteal activation during high-speed overground running : Impact of prior strain injury. Journal of Sports Sciences. 39(18), pp. 2073-2079. https://doi.org/10.1080/02640414.2021.1917839
Anterior cruciate ligament reconstruction increases the risk of hamstring strain injury across football codes in Australia
Messer, Daniel J., Williams, Morgan, Bourne, Matthew, Opar, David, Timmins, Ryan Gregory and Shield, Anthony. (2021). Anterior cruciate ligament reconstruction increases the risk of hamstring strain injury across football codes in Australia. Sports Medicine. 52, pp. 923-932. https://doi.org/10.1007/s40279-021-01567-x
Screening hamstring injury risk factors multiple times in a season does not improve the identification of future injury risk
Opar, David A., Ruddy, Joshua D., Williams, Morgan D., Maniar, Nirav, Hickey, Jack T., Bourne, Matthew N., Pizzari, Tania and Timmins, Ryan G.. (2021). Screening hamstring injury risk factors multiple times in a season does not improve the identification of future injury risk. Medicine and Science in Sports and Exercise. 54(2), pp. 321-329. https://doi.org/10.1249/MSS.0000000000002782
Impact of prior anterior cruciate ligament, hamstring or groin injury on lower limb strength and jump kinetics in elite female footballers
Collings, Tyler J., Diamond, Laura E., Barrett, Rod S., Timmins, Ryan G., Hickey, Jack T., du Moulin, William S., Gonçalves, Basílio A. M., Cooper, Christopher and Bourne, Matthew N.. (2021). Impact of prior anterior cruciate ligament, hamstring or groin injury on lower limb strength and jump kinetics in elite female footballers. Physical Therapy in Sport. 52, pp. 297-304. https://doi.org/10.1016/j.ptsp.2021.10.009
Prediction of hamstring injuries in Australian Football using biceps femoris architectural risk factors derived from soccer
Lee Dow, Connor, Timmins, Ryan G., Ruddy, Joshua D., Williams, Morgan D., Maniar, Nirav, Hickey, Jack T., Bourne, Matthew N. and Opar, David A.. (2021). Prediction of hamstring injuries in Australian Football using biceps femoris architectural risk factors derived from soccer. American Journal of Sports Medicine. 49(13), pp. 3687-3695. https://doi.org/10.1177/03635465211041686
Muscle activity and activation in previously strain-injured lower limbs : A systematic review
Presland, J. D., Timmins, R. G., Maniar, N., Tofari, P. J., Kidgell, D. J., Shield, A. J., Dickson, J. and Opar, D.. (2021). Muscle activity and activation in previously strain-injured lower limbs : A systematic review. Sports Medicine. 51(11), pp. 2311-2327. https://doi.org/10.1007/s40279-021-01487-w
Is pre-season eccentric strength testing during the nordic hamstring exercise associated with future hamstring strain injury? A systematic review and meta-analysis
Opar, David A., Timmins, Ryan G., Behan, Fearghal P., Hickey, Jack T., van Dyk, Nicol, Price, Kara and Maniar, Nirav. (2021). Is pre-season eccentric strength testing during the nordic hamstring exercise associated with future hamstring strain injury? A systematic review and meta-analysis. Sports Medicine. 51(9), pp. 1935-1945. https://doi.org/10.1007/s40279-021-01474-1
Sprinting, strength, and architectural adaptations following hamstring training in Australian Footballers
Timmins, Ryan G., Filopoulos, Dean, Nguyen, Victor, Giannakis, Jake, Ruddy, Joshua D., Hickey, Jack T., Maniar, Nirav and Opar, David A.. (2021). Sprinting, strength, and architectural adaptations following hamstring training in Australian Footballers. Scandinavian Journal of Medicine & Science in Sports. 31(6), pp. 1276-1289. https://doi.org/10.1111/sms.13941
Skeletal muscle adaptive responses to different types of short-term exercise training and detraining in middle-age men
Callahan, Marcus J., Parr, Evelyn B., Snijders, Tim, Conceição, Miguel S., Radford, Bridget E., Timmins, Ryan G., Devlin, Brooke L., Hawley, John A. and Camera, Donny M.. (2021). Skeletal muscle adaptive responses to different types of short-term exercise training and detraining in middle-age men. Medicine and Science in Sports and Exercise. 53(10), pp. 2023-2036. https://doi.org/10.1249/MSS.0000000000002684
Lower limb muscle size after anterior cruciate ligament injury : A systematic review and meta-analysis
Dutaillis, Benjamin, Maniar, Nirav, Opar, David A., Hickey, Jack T. and Timmins, Ryan G.. (2021). Lower limb muscle size after anterior cruciate ligament injury : A systematic review and meta-analysis. Sports Medicine. 51(6), pp. 1209-1226. https://doi.org/10.1007/s40279-020-01419-0
Trunk, pelvis and lower limb coordination between anticipated and unanticipated sidestep cutting in females
Dutaillis, Benjamin, Opar, David A., Pataky, Todd, Timmins, Ryan G., Hickey, Jack T. and Maniar, Nirav. (2021). Trunk, pelvis and lower limb coordination between anticipated and unanticipated sidestep cutting in females. Gait & Posture. 85, pp. 131-137. https://doi.org/10.1016/j.gaitpost.2020.12.011
Does site matter? Impact of inertial measurement unit placement on the validity and reliability of stride variables during running : A systematic review and meta-analysis
Horsley, Benjamin J., Tofari, Paul J., Halson, Shona L., Kemp, Justin G., Dickson, Jessica, Maniar, Nirav and Cormack, Stuart J.. (2021). Does site matter? Impact of inertial measurement unit placement on the validity and reliability of stride variables during running : A systematic review and meta-analysis. Sports Medicine. 51(7), pp. 1449-1489. https://doi.org/10.1007/s40279-021-01443-8
Eccentric hamstring strength is associated with age and duration of previous season hamstring injury in male soccer players
Vicens-Bordas, Jordi, Esteve, Ernest, Fort-Vanmeerhaeghe, Azahara, Clausen, Mikkel Bek, Bandholm, Thomas, Opar, David, Shield, Anthony and Thorborg, Kristian. (2020). Eccentric hamstring strength is associated with age and duration of previous season hamstring injury in male soccer players. International Journal of Sports Physical Therapy. 15(2), pp. 246-253. https://doi.org/10.26603/ijspt20200246
Anatomy of the hamstrings
Timmins, Ryan, Woodley, Stephanie, Shield, Anthony and Opar, David. (2020). Anatomy of the hamstrings. In In Thorborg , Kristian, Opar, David and Shield, Anthony (Ed.). Prevention and rehabilitation of hamstring injuries pp. 1-30 Springer Nature Switzerland AG. https://doi.org/10.1007/978-3-030-31638-9_1
Hamstring injury prevention and implementation
van der Horst, Nick, Thorborg, Kristian and Opar, David. (2020). Hamstring injury prevention and implementation. In In Thorborg, Kristian, Opar, David and Shield, Anthony (Ed.). Prevention and rehabilitation of hamstring injuries pp. 145-163 Springer Nature Switzerland AG. https://doi.org/10.1007/978-3-030-31638-9_6
Hamstrings biomechanics related to running
Maniar, Nirav, Schache, Anthony, Heiderscheit, Bryan and Opar, David. (2020). Hamstrings biomechanics related to running. In In Thorborg, Kristian, Opar, David and Shield, Anthony (Ed.). Prevention and rehabilitation of hamstring injuries pp. 65-81 Springer Nature Switzerland AG. https://doi.org/10.1007/978-3-030-31638-9_3
Pain-free versus pain-threshold rehabilitation following acute hamstring strain injury : A randomized controlled trial
Hickey, Jack T., Timmins, Ryan G., Maniar, Nirav, Rio, Ebonie, Hickey, Peter F., Pitcher, Christian A., Williams, Morgan D. and Opar, David A.. (2020). Pain-free versus pain-threshold rehabilitation following acute hamstring strain injury : A randomized controlled trial. Journal of Orthopaedic and Sports Physical Therapy. 50(2), pp. 91-103. https://doi.org/10.2519/jospt.2020.8895
Performance changes during the off-season period in football players–Effects of age and previous hamstring injury
Vicens-Bordas, Jordi, Esteve, Ernest, Fort-Vanmeerhaeghe, Azahara, Casals, Martí, Bandholm, Thomas, Ishøi, Lasse, Opar, David, Shield, Anthony and Thorborg, Kristian. (2020). Performance changes during the off-season period in football players–Effects of age and previous hamstring injury. Journal of Sports Sciences. 38(21), pp. 2489-2499. https://doi.org/10.1080/02640414.2020.1792160
Muscle contributions to tibiofemoral shear forces and valgus and rotational joint moments during single leg drop landing
Maniar, Nirav, Schache, Anthony G., Pizzolato, Claudio and Opar, David A.. (2020). Muscle contributions to tibiofemoral shear forces and valgus and rotational joint moments during single leg drop landing. Scandinavian Journal of Medicine & Science in Sports. 30(9), pp. 1664-1674. https://doi.org/10.1111/sms.13711
Muscle contributions to medial and lateral tibiofemoral compressive loads during sidestep cutting
Maniar, Nirav, Bryant, Adam L., Sritharan, Prasanna, Schache, Anthony G. and Opar, David A.. (2020). Muscle contributions to medial and lateral tibiofemoral compressive loads during sidestep cutting. Journal of Biomechanics. 101, p. 109641. https://doi.org/10.1016/j.jbiomech.2020.109641
Preseason hip/groin strength and HAGOS scores are associated with subsequent injury in professional male soccer players
Bourne, Matthew N., Williams, Morgan, Jackson, Jeremy, Williams, Kate L., Timmins, Ryan G. and Pizzari, Tania. (2020). Preseason hip/groin strength and HAGOS scores are associated with subsequent injury in professional male soccer players. Journal of Orthopaedic and Sports Physical Therapy. 50(5), pp. 234-242. https://doi.org/10.2519/jospt.2020.9022
Hamstring strength and architectural adaptations following inertial flywheel resistance training
Presland, Joel D., Opar, David A., Williams, Morgan D., Hickey, Jack T., Maniar, Nirav, Lee Dow, Connor, Bourne, Matthew N. and Timmins, Ryan G.. (2020). Hamstring strength and architectural adaptations following inertial flywheel resistance training. Journal of Science and Medicine in Sport. 23(11), pp. 1093-1099. https://doi.org/10.1016/j.jsams.2020.04.007
Determinants of hamstring fascicle length in professional rugby league athletes
McGrath, Timothy M., Hulin, Billy T., Pickworth, Nathan, Clarke, Alex and Timmins, Ryan G.. (2020). Determinants of hamstring fascicle length in professional rugby league athletes. Journal of Science and Medicine in Sport. 23(5), pp. 524-528. https://doi.org/10.1016/j.jsams.2019.12.006
Factors that impact self-reported wellness scores in elite Australian Footballers
Ruddy, Joshua D., Cormack, Stuart, Timmins, Ryan G., Sakadjian, Alex, Pietsch, Samuel, Carey, David L., Williams, Morgan D. and Opar, David A.. (2020). Factors that impact self-reported wellness scores in elite Australian Footballers. Medicine & Science in Sports & Exercise. 52(6), pp. 1427-1435. https://doi.org/10.1249/MSS.0000000000002244
Measuring the response to simulated fixture congestion in soccer
Tofari, Paul J., Kemp, Justin G. and Cormack, Stuart J.. (2020). Measuring the response to simulated fixture congestion in soccer. Science and Medicine in Football. 4(4), pp. 293-304. https://doi.org/10.1080/24733938.2020.1746824
Differences in lower limb strength and structure after 12 weeks of resistance, endurance, and concurrent training
Timmins, Ryan G., Shamim, Baubak, Tofari, Paul J., Hickey, Jack T. and Camera, Donny M.. (2020). Differences in lower limb strength and structure after 12 weeks of resistance, endurance, and concurrent training. International Journal of Sports Physiology and Performance. 15(9), pp. 1223-1230. https://doi.org/10.1123/IJSPP.2019-0788
Hamstring myoelectrical activity during three different kettlebell swing exercises
Del Monte, Michael J., Opar, David, Timmins, Ryan G., Ross, James A., Keogh, Justin W. L. and Lorenzen, Christian. (2020). Hamstring myoelectrical activity during three different kettlebell swing exercises. Journal of Strength and Conditioning Research. 34(7), pp. 1953-1958. https://doi.org/10.1519/JSC.0000000000002254
Systematically searching and reviewing the literature
Maniar, Nirav, Duncan, Kathryn and Opar, David. (2019). Systematically searching and reviewing the literature. In In Bird, Stephen R. (Ed.). Research methods in physical activity and health pp. 28-44 Routledge. https://doi.org/10.4324/9781315158501-5
Modeling the risk of team sport injuries : A narrative review of different statistical approaches
Ruddy, Joshua D., Cormack, Stuart J., Whiteley, Rod, Williams, Morgan D., Timmins, Ryan G. and Opar, David A.. (2019). Modeling the risk of team sport injuries : A narrative review of different statistical approaches. Frontiers in Physiology. 10, p. Article 829.
Session availability as a result of prior injury impacts the risk of subsequent non-contact lower limb injury in elite male australian footballers
Ruddy, Joshua D., Pietsch, Samuel, Maniar, Nirav, Cormack, Stuart J., Timmins, Ryan G., Williams, Morgan D., Carey, David L. and Opar, David A.. (2019). Session availability as a result of prior injury impacts the risk of subsequent non-contact lower limb injury in elite male australian footballers. Frontiers in Physiology. 10, p. 737. https://doi.org/10.3389/fphys.2019.00737
A novel device to assess hip strength : Concurrent validity and normative values in male athletes
O'Brien, Michael, Bourne, Matthew, Heerey, Joshua, Timmins, Ryan G. and Pizzari, Tania. (2019). A novel device to assess hip strength : Concurrent validity and normative values in male athletes. Physical Therapy in Sport. 35, pp. 63-68. https://doi.org/10.1016/j.ptsp.2018.11.006
Effect of concentric and eccentric hamstring training on sprint recovery, strength and muscle architecture in inexperienced athletes
Duhig, Steven J., Bourne, Matthew N., Buhmann, Robert L., Williams, Morgan, Minett, Geoffrey M., Roberts, Llion A., Timmins, Ryan Gregory, Sims, Casey and Shield, Anthony J.. (2019). Effect of concentric and eccentric hamstring training on sprint recovery, strength and muscle architecture in inexperienced athletes. Journal of Science and Medicine in Sport. 22(7), pp. 769 - 774. https://doi.org/10.1016/j.jsams.2019.01.010
Hamstring muscle activation and morphology are significantly altered 1-6 years after anterior cruciate ligament reconstruction with semitendinosus graft
Messer, Daniel J., Shield, Anthony J., Williams, Morgan D., Timmins, Ryan Gregory and Bourne, Matthew N.. (2019). Hamstring muscle activation and morphology are significantly altered 1-6 years after anterior cruciate ligament reconstruction with semitendinosus graft. Knee Surgery, Sports Traumatology, Arthroscopy. 27. https://doi.org/10.1007/s00167-019-05374-w
Razor hamstring curl and Nordic hamstring exercise architectural adaptations : Impact of exercise selection and intensity
Pollard, Christopher W., Opar, David A., Williams, Morgan D., Bourne, Matthew N. and Timmins, Ryan Gregory. (2019). Razor hamstring curl and Nordic hamstring exercise architectural adaptations : Impact of exercise selection and intensity. Scandinavian Journal of Medicine & Science in Sports. 29(5), pp. 706-715. https://doi.org/10.1111/sms.13381
Lower-limb muscle function during sidestep cutting
Maniar, Nirav, Schache, Anthony G., Cole, Michael H. and Opar, David. (2019). Lower-limb muscle function during sidestep cutting. Journal of Biomechanics. 82, pp. 186 - 192. https://doi.org/10.1016/j.jbiomech.2018.10.021
Effect of acute augmented feedback on between limb asymmetries and eccentric knee flexor strength during the Nordic hamstring exercise
Wade J. Chalker, Anthony J. Shield, David Opar, Evelyne N. Rathbone and Justin Keogh. (2018). Effect of acute augmented feedback on between limb asymmetries and eccentric knee flexor strength during the Nordic hamstring exercise. PeerJ. (e4972). https://doi.org/10.7717/peerj.4972
Non-knee-spanning muscles contribute to tibiofemoral shear as well as valgus and rotational joint reaction moments during unanticipated sidestep cutting
Maniar, Nirav, Schache, Anthony, Sritharan, Prasanna and Opar, David. (2018). Non-knee-spanning muscles contribute to tibiofemoral shear as well as valgus and rotational joint reaction moments during unanticipated sidestep cutting. Scientific Reports. 8(1), pp. 1 - 10. https://doi.org/10.1038/s41598-017-19098-9
An evidence-based framework for strengthening exercises to prevent hamstring injury
Bourne, Matthew N., Timmins, Ryan Gregory, Opar, David, Pizzari, Tania, Ruddy, Joshua D., Sims, Casey, Williams, Morgan D. and Shield, Anthony J.. (2018). An evidence-based framework for strengthening exercises to prevent hamstring injury. Sports Medicine. 48(2), pp. 251 - 267. https://doi.org/10.1007/s40279-017-0796-x
The effect of Nordic hamstring exercise training volume on biceps femoris long head architectural adaptation
Presland, J. D., Timmins, R. G., Bourne, M. N., Williams, M. D. and Opar, D. A.. (2018). The effect of Nordic hamstring exercise training volume on biceps femoris long head architectural adaptation. Scandinavian Journal of Medicine & Science in Sports. 28(7), pp. 1775-1783. https://doi.org/10.1111/sms.13085
Self-paced team-sport match simulation results in reductions in voluntary activation and modifications to biological, perceptual, and performance measures at halftime and for up to 96 hours postmatch
Tofari, Paul J., Kemp, Justin G. and Cormack, Stuart J.. (2018). Self-paced team-sport match simulation results in reductions in voluntary activation and modifications to biological, perceptual, and performance measures at halftime and for up to 96 hours postmatch. Journal of Strength and Conditioning Research. 32(12), pp. 3552 - 3563. https://doi.org/10.1519/JSC.0000000000001875
Infographic. Impact of the Nordic hamstring and hip extension exercises on hamstring architecture and morphology: Implications for injury prevention
Bourne, Matthew N., Pope, David, Duhig, Steven J., Timmins, Ryan G., Williams, Morgan D., Al Najjar, Aiman, Kerr, Graham K. and Shield, Anthony J.. (2018). Infographic. Impact of the Nordic hamstring and hip extension exercises on hamstring architecture and morphology: Implications for injury prevention. British Journal of Sports Medicine. 52(23), pp. 1490 - 1491. https://doi.org/10.1136/bjsports-2017-098730
A novel apparatus to measure knee flexor strength during various hamstring exercises: A reliability and retrospective injury study
Hickey, Jack T., Hickey, Peter F., Maniar, Nirav, Timmins, Ryan G., Williams, Morgan D., Pitcher, Christian A. and Opar, David A.. (2018). A novel apparatus to measure knee flexor strength during various hamstring exercises: A reliability and retrospective injury study. Journal of Orthopaedic and Sports Physical Therapy. 48(2), pp. 72 - 80. https://doi.org/10.2519/jospt.2018.7634
Adaptations to concurrent training in combination with high protein availability: A comparative trial in healthy, recreationally active men
Shamim, Baubak, Devlin, Brooke L., Timmins, Ryan G., Tofari, Paul, Dow, Connor Lee, Coffey, Vernon G., Hawley, John A. and Camera, Donny M.. (2018). Adaptations to concurrent training in combination with high protein availability: A comparative trial in healthy, recreationally active men. Sports Medicine. 48(12), pp. 2869 - 2883. https://doi.org/10.1007/s40279-018-0999-9
Non-knee-spanning muscles contribute to tibiofemoral shear as well as valgus and rotational joint reaction moments during unanticipated sidestep cutting
Maniar, Nirav, Schache, Anthony G., Sritharan, Prasanna and Opar, David. (2018). Non-knee-spanning muscles contribute to tibiofemoral shear as well as valgus and rotational joint reaction moments during unanticipated sidestep cutting. Scientific Reports. 8(2501), pp. 1 - 10. https://doi.org/10.1038/s41598-017-19098-9
Impact of exercise selection on hamstring muscle activation
Bourne, Matthew N., Williams, Morgan, Opar, David, Najjar, Aiman Al, Kerr, Graham K. and Shield, Anthony J.. (2017). Impact of exercise selection on hamstring muscle activation. British Journal of Sports Medicine. 51, pp. 1021 - 1028. https://doi.org/10.1136/bjsports-2015-095739
Impact of the Nordic hamstring and hip extension exercises on hamstring architecture and morphology: Implications for injury prevention
Bourne, Matthew N., Duhig, Steven J., Timmins, Ryan, Williams, Morgan, Opar, David, Najjar, Aiman Al, Kerr, Graham K. and Shield, Anthony J.. (2017). Impact of the Nordic hamstring and hip extension exercises on hamstring architecture and morphology: Implications for injury prevention. British Journal of Sports Medicine. 51(5), pp. 469 - 477. https://doi.org/10.1136/bjsports-2016-096130
Biceps femoris architecture : The association with injury and response to training
Timmins, Ryan. (2017). Biceps femoris architecture : The association with injury and response to training. British Journal of Sports Medicine. 51(6), pp. 547-548. https://doi.org/10.1136/bjsports-2016-097044
There is strength in numbers for muscle injuries it is time to establish an international collaborative registry
Van Dyke, Nicol, Van der Made, Anne D., Timmins, Ryan, Opar, David and Tol, Johannes L.. (2017). There is strength in numbers for muscle injuries it is time to establish an international collaborative registry. British Journal of Sports Medicine. https://doi.org/10.1136/bjsports-2016-097318
Effect of prior injury on changes to biceps femoris architecture across an Australian football league season
Timmins, Ryan, Bourne, Matthew N., Hickey, Jack, Maniar, Nirav, Tofari, Paul, Williams, Morgan and Opar, David. (2017). Effect of prior injury on changes to biceps femoris architecture across an Australian football league season. Medicine and Science in Sports and Exercise. 49(10), pp. 2102 - 2109. https://doi.org/10.1249/MSS.0000000000001333
Comparison of ergometer- and track-based testing in junior track-sprint cyclists. Implications for talent identification and development
Tofari, Paul, Cormack, Stuart, Ebert, Tammie R., Gardner, A. S. and Kemp, Justin. (2017). Comparison of ergometer- and track-based testing in junior track-sprint cyclists. Implications for talent identification and development. Journal of Sports Sciences. https://doi.org/10.1080/02640414.2016.1243795
Criteria for progressing rehabilitation and determining return to play clearance following hamstring strain injury: A systematic review
Hickey, Jack, Timmins, Ryan G., Maniar, Nirav, Williams, Morgan and Opar, David. (2017). Criteria for progressing rehabilitation and determining return to play clearance following hamstring strain injury: A systematic review. Sports Medicine. 47(7). https://doi.org/10.1007/s40279-016-0667-x
Non-motorized treadmill running is associated with higher cardiometabolic demands compared with overground and motorized treadmill running
Edwards, Robert B., Tofari, Paul J., Cormack, Stuart J. and Whyte, Douglas G.. (2017). Non-motorized treadmill running is associated with higher cardiometabolic demands compared with overground and motorized treadmill running. Frontiers in Physiology. 8(914), pp. 1 - 11. https://doi.org/10.3389/fphys.2017.00914
Predictive modeling of hamstring strain injuries in elite Australian footballers
Ruddy, Joshua, Shield, Anthony J., Maniar, Nirav, Williams, Morgan D., Duhig, Steven J., Timmins, Ryan, Hickey, Jack, Bourne, Matthew N. and Opar, David. (2017). Predictive modeling of hamstring strain injuries in elite Australian footballers. Medicine and Science in Sports and Exercise. 50(5), pp. 1 - 30. https://doi.org/10.1249/MSS.0000000000001527
Running exposure is associated with the risk of hamstring strain injury in elite Australian footballers
Ruddy, Joshua D., Pollard, Christopher, Timmins, Ryan, Williams, Morgan, Shield, Anthony and Opar, David. (2017). Running exposure is associated with the risk of hamstring strain injury in elite Australian footballers. British Journal of Sports Medicine. https://doi.org/10.1136/bjsports-2016-096777
Drop punt kicking induces eccentric knee flexor weakness associated with reductions in hamstring electromyographic activity
Duhig, Steven J., Williams, Morgan, Minett, Geoffrey M., Opar, David and Shield, Anthony J.. (2017). Drop punt kicking induces eccentric knee flexor weakness associated with reductions in hamstring electromyographic activity. Journal of Science and Medicine in Sport. 20(6), pp. 595 - 599. https://doi.org/10.1016/j.jsams.2016.09.006
Muscle activation patterns in the Nordic hamstring exercise: Impact of prior strain injury
Bourne, Matthew N., Opar, David, Williams, Morgan, Najjar, Aiman Al and Shield, Anthony J.. (2016). Muscle activation patterns in the Nordic hamstring exercise: Impact of prior strain injury. Scandinavian Journal of Medicine & Science in Sports. 26(6). https://doi.org/10.1111/sms.12494
Biceps femoris architecture and strength in athletes with a prior ACL reconstruction
Timmins, Ryan G., Bourne, Matthew N., Shield, Anthony J., Williams, Morgan, Lorenzen, Christian and Opar, David A.. (2016). Biceps femoris architecture and strength in athletes with a prior ACL reconstruction. Medicine and Science in Sports and Exercise. 48(3), pp. 337-345. https://doi.org/10.1249/MSS.0000000000000783
Hamstring strength and flexibility after hamstring strain injury: A systematic review and meta-analysis
Maniar, Nirav, Shielf, Anthony J., Williams, Morgan D., Timmins, Ryan G. and Opar, David A.. (2016). Hamstring strength and flexibility after hamstring strain injury: A systematic review and meta-analysis. British Journal of Sports Medicine. 50(15), pp. 909-920. https://doi.org/10.1136/bjsports-2015-095311
Is there evidence to support the use of the angle of peak torque as a marker of hamstring injury and re-injury risk?
Timmins, Ryan G., Shield, Anthony J., Williams, Morgan D. and Opar, David A.. (2016). Is there evidence to support the use of the angle of peak torque as a marker of hamstring injury and re-injury risk? Sports Medicine. 46(1), pp. 7-13. https://doi.org/10.1007/s40279-015-0378-8
Effect of high-speed running on hamstring strain injury risk
Duhig, Steven, Shield, Anthony, Opar, David, Gabbett, Tim, Ferguson, Cameron and Williams, Morgan. (2016). Effect of high-speed running on hamstring strain injury risk. British Journal of Sports Medicine. 50(24). https://doi.org/10.1136/bjsports-2015-095679
Short biceps femoris fascicles and eccentric knee flexor weakness increase the risk of hamstring injury in elite football (soccer): a prospective cohort study
Timmins, Ryan G., Bourne, Matthew N., Shield, Anthony J., Williams, Morgan, Lorenzen, Christian and Opar, David. (2016). Short biceps femoris fascicles and eccentric knee flexor weakness increase the risk of hamstring injury in elite football (soccer): a prospective cohort study. British Journal of Sports Medicine. 50(24). https://doi.org/10.1136/bjsports-2015-095362
Architectural changes of the biceps femoris long head after concentric or eccentric training
Timmins, Ryan G., Ruddy, Joshua D., Presland, Joel, Maniar, Nirav and Williams, Morgan. (2016). Architectural changes of the biceps femoris long head after concentric or eccentric training. Medicine and Science in Sports and Exercise. 48(3), pp. 499-508. https://doi.org/10.1249/MSS.0000000000000795
Reliability of measures of quadriceps muscle function using magnetic stimulation
Tofari, Paul J., Opar, David, Kemp, Justin Guy, Billaut, Francois and Cormack, Stuart John. (2016). Reliability of measures of quadriceps muscle function using magnetic stimulation. Muscle & Nerve. https://doi.org/10.1002/mus.24926
Architectural adaptations of muscle to training and injury: A narrative review outlining the contributions by fascicle length, pennation angle and muscle thickness
Timmins, Ryan G., Shield, Anthony J., Williams, Morgan D., Lorenzen, Christian and Opar, David. (2016). Architectural adaptations of muscle to training and injury: A narrative review outlining the contributions by fascicle length, pennation angle and muscle thickness. British Journal of Sports Medicine. 50(23). https://doi.org/10.1136/bjsports-2015-094881
Tactical combat movements: inter-individual variation in performance due to the effects of load carriage
Hunt, Andrew P., Tofari, Paul J., Billing, Daniel C. and Silk, Aaron J.. (2016). Tactical combat movements: inter-individual variation in performance due to the effects of load carriage. Ergonomics. 59(9), pp. 1232 - 1241. https://doi.org/10.1080/00140139.2015.1132780
Comparisons of eccentric knee flexor strength and asymmetries across elite, sub-elite and school level cricket players
Chalker, Wade J., Shield, Anthony J., Opar, David and Keogh, Justin W. L.. (2016). Comparisons of eccentric knee flexor strength and asymmetries across elite, sub-elite and school level cricket players. PeerJ. 4, pp. 1 - 10. https://doi.org/10.7717/peerj.1594
What do submarines have in common with diabetes?
Rio, Ebony, Timmins, Ryan Gregory and Opar, David. (2016). What do submarines have in common with diabetes? British Journal of Sports Medicine. 50(16), pp. 955 - 956. https://doi.org/10.1136/bjsports-2016-096646
The juxtaposition of science and medicine in sport. Can we all play together nicely?
Opar, David and Rio, Ebony. (2015). The juxtaposition of science and medicine in sport. Can we all play together nicely? British Journal of Sports Medicine. 49(10), pp. 640 - 641. https://doi.org/10.1136/bjsports-2015-094819
Eccentric knee flexor strength and risk of hamstring injuries in Rugby Union: A prospective study
Bourne, Matthew, Opar, David, Williams, Morgan and Shield, Anthony. (2015). Eccentric knee flexor strength and risk of hamstring injuries in Rugby Union: A prospective study. American Journal of Sports Medicine. 43(11), pp. 2663 - 2670. https://doi.org/10.1177/0363546515599633
Acute injuries in track and field athletes : A 3-year observational study at the penn relays carnival with epidemiology and medical coverage implications
Opar, David, Drezner, Jonathan, Shield, Anthony, Williams, Morgan, Webner, David, Sennett, Brian, Kapur, Rahul, Cohen, Marc, Ulager, James, Cafengiu, Ana and Cronholm, Peter F. (2015). Acute injuries in track and field athletes : A 3-year observational study at the penn relays carnival with epidemiology and medical coverage implications. American Journal of Sports Medicine. 43(4), pp. 816 - 822. https://doi.org/10.1177/0363546514562553
Comparison of anthropometry, upper body strength and lower body power characteristics in different levels of Australian Football players
Bilsborough, Johann, Greenway, Kate, Opar, David, Livingstone, Steuart, Cordy, Justin, Bird, S. and Coutts, Aaron. (2015). Comparison of anthropometry, upper body strength and lower body power characteristics in different levels of Australian Football players. Journal of Strength and Conditioning Research. 29(3), pp. 826 - 834. https://doi.org/10.1519/JSC.0000000000000682
Eccentric hamstring strength and hamstring injury risk in Australian footballers
Opar, David A., Williams, Morgan D., Timmins, Ryan G., Duhig, Steven and Shield, Anthony J.. (2015). Eccentric hamstring strength and hamstring injury risk in Australian footballers. Medicine and Science in Sports and Exercise. 47(4). https://doi.org/10.1249/MSS.0000000000000465
The effect of previous hamstring strain injury on the change in eccentric hamstring strength during preseason training in elite Australian footballers
Opar, David A., Williams, Morgan D., Timmins, Ryan G., Hickey, Jack, Duhig, Steven J. and Shield, Anthony J.. (2015). The effect of previous hamstring strain injury on the change in eccentric hamstring strength during preseason training in elite Australian footballers. American Journal of Sports Medicine. 43(2), pp. 377-384. https://doi.org/10.1177/0363546514556638
Biceps femoris long head architecture: A reliability and retrospective injury study
Timmins, Ryan Gregory, Shield, Anthony, Williams, Morgan, Lorenzen, Christian and Opar, David. (2015). Biceps femoris long head architecture: A reliability and retrospective injury study. Medicine and Science in Sports and Exercise. 47(5), pp. 905 - 913. https://doi.org/10.1249/MSS.0000000000000507
Effects of Military Load Carriage on Susceptibility to Enemy Fire During Tactical Combat Movements
Billing, Daniel C., Silk, Aaron J., Tofari, Paul J. and Hunt, Andrew P.. (2015). Effects of Military Load Carriage on Susceptibility to Enemy Fire During Tactical Combat Movements. Journal of Strength and Conditioning Research. 29(11S), pp. S134 - S138. https://doi.org/10.1519/JSC.0000000000001036
Biceps femoris long head architecture: The association with hamstring injury and response to training
Timmins, Ryan Gregory. (2015). Biceps femoris long head architecture: The association with hamstring injury and response to training [Thesis]. https://doi.org/10.4226/66/5a9cbd05b0b98
Changes in running performance after four weeks of interval training in Australian Footballers : A single-blind placebo-controlled study
McLean, Blake, Tofari, Paul, Gore, Christopher and Kemp, Justin. (2015). Changes in running performance after four weeks of interval training in Australian Footballers : A single-blind placebo-controlled study. Journal of Strength and Conditioning Research. 29(11), pp. 3206 - 3215. https://doi.org/10.1519/JSC.0000000000000984
The accuracy and precision of DXA for assessing body composition in team sport athletes
Bilsborough, Johann, Greenway, Kate, Opar, David, Livingstone, Steuart, Cordy, Justin and Coutts, Aaron. (2014). The accuracy and precision of DXA for assessing body composition in team sport athletes. Journal of Sports Sciences. 32(19), pp. 1821 - 1828. https://doi.org/10.1080/02640414.2014.926380
Is there a potential relationship between prior hamstring strain injury and increased risk for future anterior cruciate ligament injury?
Opar, David and Serpell, Benjamin. (2014). Is there a potential relationship between prior hamstring strain injury and increased risk for future anterior cruciate ligament injury? Archives of Physical Medicine and Rehabilitation. 95(2). https://doi.org/10.1016/j.apmr.2013.07.028
Reduced biceps femoris myoelectrical activity influences eccentric knee flexor weakness after repeat sprint running
Timmins, R. G., Opar, D. A., Williams, M. D., Schache, A. G., Dear, N. M. and Shield, A. J.. (2014). Reduced biceps femoris myoelectrical activity influences eccentric knee flexor weakness after repeat sprint running. Scandinavian Journal of Medicine & Science in Sports. 24(4), pp. e299-e305. https://doi.org/10.1111/sms.12171
The financial cost of hamstring strain injuries in the Australian Football League
Hickey, Jack, Shield, Anthony J., Williams, Morgan D. and Opar, David A. (2014). The financial cost of hamstring strain injuries in the Australian Football League. British Journal of Sports Medicine. 48(8), pp. 729-730. https://doi.org/10.1136/bjsports-2013-092884
Acute hamstring strain injury in track-and-field athletes: A 3-year observational study at the Penn Relay Carnival
Opar, David, Drezner, Jonathan, Shield, Anthony, Williams, Morgan, Webner, David, Sennett, Brian, Kapur, Rahul, Cohen, M., Ulager, James and Cafengiu, Ana. (2014). Acute hamstring strain injury in track-and-field athletes: A 3-year observational study at the Penn Relay Carnival. Scandinavian Journal of Medicine & Science in Sports. 24(4). https://doi.org/10.1111/sms.12159
A novel device using the Nordic hamstring exercise to assess eccentric knee flexor strength: A reliability and retrospective injury study
Opar, David, Piatowski, Timothy, Williams, Morgan and Shield, Anthony J.. (2013). A novel device using the Nordic hamstring exercise to assess eccentric knee flexor strength: A reliability and retrospective injury study. Journal of Orthopaedic and Sports Physical Therapy. 43(9), pp. 636 - 640. https://doi.org/10.2519/jospt.2013.4837
A quantification of the physiological demands of the army emergency responder in the Australian Army
Tofari, Paul J., Laing Treloar, Alison K. and Silk, Aaron J.. (2013). A quantification of the physiological demands of the army emergency responder in the Australian Army. Military Medicine. 178(5), pp. 487 - 494. https://doi.org/10.7205/MILMED-D-12-00423
Rate of torque and electromyographic development during anticipated eccentric contraction is lower in previously strained hamstrings
Opar, David A., Williams, Morgan D., Timmins, Ryan G. and Dear, Nuala M. (2013). Rate of torque and electromyographic development during anticipated eccentric contraction is lower in previously strained hamstrings. The American Journal of Sports Medicine. 41(1), pp. 116-125. https://doi.org/10.1177/0363546512462809
The role of neuromuscular inhibition in hamstring strain injury recurrence
Fyfe, Jackson, Opar, David, Williams, Morgan and Shield, Anthony. (2013). The role of neuromuscular inhibition in hamstring strain injury recurrence. Journal of Electromyography and Kinesiology. 23(3), pp. 523-530. https://doi.org/10.1016/j.jelekin.2012.12.006
Knee flexor strength and bicep femoris electromyographical activity is lower in previously strained hamstrings
Opar, David A., Williams, Morgan D., Timmins, Ryan G., Dear, Nuala M. and Shield, Anthony J. (2013). Knee flexor strength and bicep femoris electromyographical activity is lower in previously strained hamstrings. Journal of Electromyography and Kinesiology. 23(3), pp. 696-703. https://doi.org/10.1016/j.jelekin.2012.11.004
Hamstring strain injuries : Factors that lead to injury and re-injury
Opar, David A., Williams, Morgan D. and Shield, Anthony J. (2012). Hamstring strain injuries : Factors that lead to injury and re-injury. Sports Medicine. 42(3), pp. 209-226. https://doi.org/10.2165/11594800-000000000-00000
A self-paced intermittent protocol on a non-motorised treadmill: A reliable alternative to assessing team-sport running performance
Tofari, Paul J., McLean, Blake D., Kemp, Justin and Cormack, Stuart. (2011). A self-paced intermittent protocol on a non-motorised treadmill: A reliable alternative to assessing team-sport running performance. Journal of Sports Science and Medicine. 14(1), pp. 62 - 68.