Reliability of measures of quadriceps muscle function using magnetic stimulation

Journal article


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
AuthorsTofari, Paul J., Opar, David, Kemp, Justin Guy, Billaut, Francois and Cormack, Stuart John
Abstract

Introduction: Magnetic stimulation can be used to assess muscle function by calculating voluntary activation using an interpolated twitch during maximal voluntary contractions (MVCs) and control twitches to potentiated muscle. In this study we assessed the reliability of torque, electromyography (EMG), and voluntary activation variables. Methods: Fifteen men completed 5 testing sessions (2 familiarization and 3 reliability trials) to assess quadriceps femoris muscle function. Intra- and interday reliability levels of torque and EMG variables were estimated using typical error ± 90% confidence limits, expressed as percentage [coefficient of variation (CV)] and intraclass correlation coefficient. The smallest worthwhile change was calculated as 0.2 × between-participant standard deviation. Results: Intra- and interday torque variables for MVC were reliable (CV < 4%, ICC 0.98, and CV < 5%, ICC 0.99, respectively). EMG variables were less reliable than torque variables, with CVs ranging from 7% to 18%. Conclusion: Magnetic stimulation of the femoral nerve is a reliable method for assessing muscle function.

KeywordsEMG; interpolated twitch; magnetic stimulation; reliability; skeletal muscle; torque
Year2016
JournalMuscle & Nerve
PublisherJohn Wiley & Sons Inc.
Digital Object Identifier (DOI)https://doi.org/10.1002/mus.24926
Scopus EID2-s2.0-84962045082
Research GroupSports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre
Place of publicationUnited States of America
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Joseph, Corey, Bradshaw, Elizabeth, Kemp, Justin and Clark, Ross. (2013) The interday reliability of ankle, knee, leg, and vertical musculoskeletal stiffness during hopping and overground running. Journal of Applied Biomechanics. https://doi.org/10.1123/jab.29.4.386
Relationship between tests of physical qualities and physical match performance in elite rugby league players
Gabbett, Timothy, Stein, Joshua, Kemp, Justin and Lorenzen, Christian. (2013) Relationship between tests of physical qualities and physical match performance in elite rugby league players. Journal of Strength and Conditioning Research. https://doi.org/10.1519/JSC.0b013e318274f236
Rate of torque and electromyographic development during anticipated eccentric contraction is lower in previously strained hamstrings
Opar, David, Williams, Morgan, Timmins, Ryan Gregory, Dear, Nuala and Shield, Anthony. (2013) Rate of torque and electromyographic development during anticipated eccentric contraction is lower in previously strained hamstrings. The American Journal of Sports Medicine. https://doi.org/10.1177/0363546512462809
Strength and power profiling of athletes : Selecting tests and how to use the information for program design
McGuigan, Michael, Cormack, Stuart and Gill, Nicholas. (2013) Strength and power profiling of athletes : Selecting tests and how to use the information for program design. Strength and Conditioning Journal. https://doi.org/10.1519/SSC.0000000000000011
Physiological and performance responses to a preseason altitude-training camp in elite team-sport athletes
McLean, Blake, Buttifant, David, Gore, Christopher, White, Kevin, Liess, Carsten and Kemp, Justin. (2013) Physiological and performance responses to a preseason altitude-training camp in elite team-sport athletes. International Journal of Sports Physiology and Performance. https://doi.org/10.1123/ijspp.8.4.391
Endurance and sprint benefits of high-intensity and supramaximal interval training
Cicioni-Kolsky, Daniel James, Lorenzen, Christian, Williams, Morgan and Kemp, Justin. (2013) Endurance and sprint benefits of high-intensity and supramaximal interval training. European Journal of Sport Science. https://doi.org/10.1080/17461391.2011.606844
The effect of exercise-induced muscle damage on shock dissipation during treadmill running
Blackah, Nicholas, Bradshaw, Elizabeth, Kemp, Justin and Shoushtarian, Mehrnaz. (2013) The effect of exercise-induced muscle damage on shock dissipation during treadmill running. Asian Journal of Exercise & Sports Science. https://doi.org/10.1007/s11274-015-1903-5
Impact of neuromuscular fatigue on match exercise intensity and performance in elite Australian football
Mooney, Mitchell, Cormack, Stuart, O'Brien, Brendan, Morgan, William and McGuigan, Michael. (2013) Impact of neuromuscular fatigue on match exercise intensity and performance in elite Australian football. Journal of Strength and Conditioning Research. https://doi.org/10.1519/JSC.0b013e3182514683
A novel device using the Nordic hamstring exercise to assess eccentric knee flexor strength: A reliability and retrospective injury study
Opar, David, Piatkowski, Timothy, Williams, Morgan and Shield, Anthony. (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
Examining the influence of accute instructional approaches on the decision-making performance of experienced team field sport players
Buszard, Timothy, Kemp, Justin and Farrow, Damian. (2013) Examining the influence of accute instructional approaches on the decision-making performance of experienced team field sport players. Journal of Sports Sciences. https://doi.org/10.1080/02640414.2012.731516
Year-to-year variability in haemoglobin mass response to two altitude training camps
McLean, Blake, Buttifant, David, Gore, Christopher, White, Kevin and Kemp, Justin. (2013) Year-to-year variability in haemoglobin mass response to two altitude training camps. British Journal of Sports Medicine. https://doi.org/10.1136/bjsports-2013-092744
Rate of torque and electromyographic development during anticipated eccentric contraction is lower in previously strained hamstrings
Opar, David, Williams, Morgan, Timmins, Ryan 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). 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). 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, Williams, Morgan, Timmins, Ryan, 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). https://doi.org/10.1016/j.jelekin.2012.11.004
Influence of neuromuscular fatigue on accelerometer load in elite Australian football players
Cormack, Stuart, Mooney, Mitchell, Morgan, Will and McGuigan, Michael. (2013) Influence of neuromuscular fatigue on accelerometer load in elite Australian football players. International Journal of Sports Physiology and Performance. https://doi.org/10.1123/ijspp.8.4.373
Do physical capacity and interchange rest periods influence match exercise-intensity profile in Australian football?
Mooney, Mitchell, Cormack, Stuart, O'Brien, Brendan and Coutts, Aaron. (2013) Do physical capacity and interchange rest periods influence match exercise-intensity profile in Australian football? International Journal of Sports Physiology and Performance. https://doi.org/10.1123/ijspp.8.2.165
International field hockey players perform more high-speed running than national-level conterparts
Jennings, Denise, Cormack, Stuart, Coutts, Aaron and Aughey, Robert. (2012) International field hockey players perform more high-speed running than national-level conterparts. Journal of Strength and Conditioning Research. 26(4), pp. 947 - 952. https://doi.org/10.1519/JSC.0b013e31822e5913
Classifying training drills based on movement demands in Australian Football
Loader, Jordan, Montgomery, Paul, Williams, Morgan, Lorenzen, Christian and Kemp, Justin. (2012) Classifying training drills based on movement demands in Australian Football. International Journal of Sports Science and Coaching. 7(1), pp. 57 - 67. https://doi.org/10.1260/1747-9541.7.1.57
Hamstring strain injuries: Factors that lead to injury and re-injury
Opar, David, Williams, Morgan and Shield, Anthony. (2012) Hamstring strain injuries: Factors that lead to injury and re-injury. Sports Medicine. 42(3). https://doi.org/10.2165/11594800-000000000-00000
Hamstring strain injuries: Factors that lead to injury and re-injury
Opar, David, Williams, Morgan and Shield, Anthony. (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
Caffeine improves strength gains in response to 6 weeks of resistance training
Kemp, Justin, Eaton, Tom, Jarvis, Stephen, Meehan, Daniel and Whyte, Douglas G.. (2012) Caffeine improves strength gains in response to 6 weeks of resistance training Australia: Australian Strength and Conditioning Association.
GPS Analysis of an International Field Hockey Tournament
Jennings, Denise, Cormack, Stuart, Coutts, Aaron and Aughey, Robert. (2012) GPS Analysis of an International Field Hockey Tournament. International Journal of Sports Physiology and Performance. 7(3), pp. 224 - 231. https://doi.org/10.1123/ijspp.7.3.224
Influence of sodium bicarbonate on performance and hydration in lightweight rowing
Kupcis, Peter, Slater, Gary, Pruscino, Cathryn and Kemp, Justin. (2012) Influence of sodium bicarbonate on performance and hydration in lightweight rowing. International Journal of Sports Physiology and Performance. 7(1), pp. 11 - 18. https://doi.org/10.1123/ijspp.7.1.11
Total plasma fatty acid responses to maximal incremental exercise after caffeine ingestion
Olicina, Guillermo, Munoz, Diego, Kemp, Justin, Timon, Rafael, Maynar, Juan, Caballero, Maria and Maynar, Marcos. (2012) Total plasma fatty acid responses to maximal incremental exercise after caffeine ingestion. Journal of Exercise Science and Fitness. 10(1), pp. 33 - 37. https://doi.org/10.1016/j.jesf.2012.04.008
Is "train as you play" the way to go?
Gabbett, Tim and Cormack, Stuart. (2012) Is "train as you play" the way to go? 5th Exercise and Sports Science Australia Conference. pp. 41 - 42
The relationship between physical capacity and match performance in elite Australian football :A mediation approach
Mooney, Mitchell, O'Brien, Brendan, Cormack, Stuart, Coutts, Aaron, Berry, Jason and Young, Warren. (2011) The relationship between physical capacity and match performance in elite Australian football :A mediation approach. Journal of Science and Medicine in Sport. 14(5), pp. 447 - 452. https://doi.org/10.1016/j.jsams.2011.03.010
Which jump variables should be used to assess explosive leg muscle function?
Young, Warren, Cormack, Stuart and Crichton, Michael. (2011) Which jump variables should be used to assess explosive leg muscle function? International Journal of Sports Physiology and Performance. 6(1), pp. 51 - 57. https://doi.org/10.1123/ijspp.6.1.51
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.
The Validity and Reliability of GPS Units for Measuring Distance in Team Sport Specific Running Patterns
Jennings, Denise, Cormack, Stuart, Coutts, Aaron, Boyd, Luke and Aughey, Robert. (2010) The Validity and Reliability of GPS Units for Measuring Distance in Team Sport Specific Running Patterns. International Journal of Sports Physiology and Performance. 5(3), pp. 328 - 341. https://doi.org/10.1123/ijspp.5.3.328
Variability of GPS units for measuring distance in team sport movements
Jennings, Denise, Cormack, Stuart, Coutts, Aaron, Boyd, Luke and Aughey, Robert. (2010) Variability of GPS units for measuring distance in team sport movements. International Journal of Sports Physiology and Performance. 5(4), pp. 565 - 569. https://doi.org/10.1123/ijspp.5.4.565
Neuromuscular, endocrine, and perceptual fatigue responses during different length between-match microcycles in professional rugby league players
McLean, Blake, Coutts, Aaron, Kelly, Vincent, McGuigan, Michael and Cormack, Stuart. (2010) Neuromuscular, endocrine, and perceptual fatigue responses during different length between-match microcycles in professional rugby league players. International Journal of Sports Physiology and Performance. 5(3), pp. 367 - 383. https://doi.org/10.1123/ijspp.5.3.367
Movement pattern comparisons in elite (AFL) and sub-elite (WAFL) Australian football games using GPS
Brewer, Cameron, Dawson, Brian, Heasman, Jarryd, Stewart, Glenn and Cormack, Stuart. (2010) Movement pattern comparisons in elite (AFL) and sub-elite (WAFL) Australian football games using GPS. Journal of Science and Medicine in Sport. 13(6), pp. 618 - 623. https://doi.org/10.1016/j.jsams.2010.01.005
Caffeine and performance in clay target shooting
Share, Bianca Louise, Sanders, Nick and Kemp, Justin. (2009) Caffeine and performance in clay target shooting. Journal of Sports Sciences. 27(6), pp. 661 - 666. https://doi.org/10.1080/02640410902741068
Long-term power performance of elite Australian rules football players
McGuigan, Michael, Cormack, Stuart and Newton, Robert U.. (2009) Long-term power performance of elite Australian rules football players. Journal of Strength and Conditioning Research. 23(1), pp. 26 - 32. https://doi.org/10.1519/JSC.0b013e31818753ca
Morphological and biochemical alterations of skeletal muscles from the genetically obese (ob/ob) mouse
Kemp, Justin G., Blazev, R., Stephenson, Demitri G. and Stephenson, Gabriela M.M.. (2009) Morphological and biochemical alterations of skeletal muscles from the genetically obese (ob/ob) mouse. International Journal of Obesity. 33(8), pp. 831 - 841. https://doi.org/10.1038/ijo.2009.100
Neuromuscular and endocrine responses of elite players to an Australian rules football match
Cormack, Stuart, Newton, Robert U. and McGuigan, Michael. (2008) Neuromuscular and endocrine responses of elite players to an Australian rules football match. International Journal of Sports Physiology and Performance. 3(3), pp. 359 - 374. https://doi.org/10.1123/ijspp.3.3.359
Reliability of measures obtained during single and repeated countermovement jumps
Cormack, Stuart, Newton, Robert U., McGuigan, Michael and Doyle, Tim. (2008) Reliability of measures obtained during single and repeated countermovement jumps. International Journal of Sports Physiology and Performance. 3(2), pp. 131 - 144. https://doi.org/10.1123/ijspp.3.2.131
E-C coupling and contractile characteristics of mechanically skinned single fibres from young rats during rapid growth and maturation
Goodman, C. A., Blazev, R., Kemp, Justin and Stephenson, G. M. M.. (2008) E-C coupling and contractile characteristics of mechanically skinned single fibres from young rats during rapid growth and maturation. Pflügers Archiv - European Journal of Physiology. 456(6), pp. 1217 - 1228. https://doi.org/10.1007/s00424-008-0474-9
Neuromuscular and endocrine responses of elite players during an Australian rules football season
Cormack, Stuart John, Newton, Robert U., McGuigan, Michael R. and Cormie, Prue. (2008) Neuromuscular and endocrine responses of elite players during an Australian rules football season. International Journal of Sports Physiology and Performance. 3(4), pp. 439 - 453. https://doi.org/10.1123/ijspp.3.4.439
Assessing the force-velocity characteristics of the leg extensors in well-trained athletes: The incremental load power profile
Sheppard, Jeremy, Cormack, Stuart, Taylor, Kristie-Lee, McGuigan, Michael and Newton, Robert U.. (2008) Assessing the force-velocity characteristics of the leg extensors in well-trained athletes: The incremental load power profile. Journal of Strength and Conditioning Research. 22(4), pp. 1320 - 1326. https://doi.org/10.1519/JSC.0b013e31816d671b
The use of sprint tests for assessment of speed qualities of elite Australian rules footballers
Young, Warren, Russell, Andrew, Burge, Peter, Clarke, Alex, Cormack, Stuart and Stewart, Glenn. (2008) The use of sprint tests for assessment of speed qualities of elite Australian rules footballers. International Journal of Sports Physiology and Performance. 3(2), pp. 199 - 206. https://doi.org/10.1123/ijspp.3.2.199
Why Dick Fosbury flopped and answers to other big sporting questions
Farrow, Damian and Kemp, Justin Guy. (2006) Why Dick Fosbury flopped and answers to other big sporting questions Allen & Unwin.
It's true! Sport stinks
Kemp, Justin Guy and Farrow, Damian. (2006) It's true! Sport stinks Allen & Unwin.
Effects of physical conditioning on children and adolescents with asthma
Welsh, Liam, Kemp, Justin and Roberts, Richard G. D.. (2005) Effects of physical conditioning on children and adolescents with asthma. Sports Medicine. 35(2), pp. 127 - 141. https://doi.org/10.2165/00007256-200535020-00003
Fitness and physical activity in children with asthma
Welsh, Liam, Roberts, Richard and Kemp, Justin. (2004) Fitness and physical activity in children with asthma. Sports Medicine. 34(13), pp. 861 - 870. https://doi.org/10.2165/00007256-200434130-00001
Run like you stole something
Farrow, Damian and Kemp, Justin Guy. (2003) Run like you stole something Allen & Unwin.