Individual physiological and mitochondrial responses during 12 weeks of intensified exercise

Journal article

Jacques, Macsue, Landen, Shanie, Romero, Javier, Yan, Xu, Garnham, Andrew, Hiam, Danielle, Siegwald, Mélina, Mercier, Emma, Hecksteden, Anne, Eynon, Nir and Voisin, Sarah. (2021). Individual physiological and mitochondrial responses during 12 weeks of intensified exercise. Physiological Reports. 9(15), p. Article: e14962. https://doi.org/10.14814/phy2.14962
AuthorsJacques, Macsue, Landen, Shanie, Romero, Javier, Yan, Xu, Garnham, Andrew, Hiam, Danielle, Siegwald, Mélina, Mercier, Emma, Hecksteden, Anne, Eynon, Nir and Voisin, Sarah
Abstract

Aim
Observed effects of exercise are highly variable between individuals, and subject-by-training interaction (i.e., individual response variability) is often not estimated. Here, we measured mitochondrial (citrate synthetase, cytochrome-c oxidase, succinate dehydrogenase, and mitochondrial copy-number), performance markers (Wpeak, lactate threshold [LT], and VO2peak), and fiber type proportions/expression (type I, type IIa, and type IIx) in multiple time points during 12-week of high-intensity interval training (HIIT) to investigate effects of exercise at the individual level.

Methods
Sixteen young (age: 33.1 ± 9.0 years), healthy men (VO2peak 35–60 ml/min/kg and BMI: 26.4 ± 4.2) from the Gene SMART study completed 12-week of progressive HIIT. Performance markers and muscle biopsies were collected every 4 weeks. We used mixed-models and bivariate growth models to quantify individual response and to estimate correlations between variables.

Results
All performance markers exhibited significant (Wpeak 0.56 ± 0.33 p = 0.003, LT 0.37 ± 0.35 p = 0.007, VO2peak 3.81 ± 6.13 p = 0.02) increases overtime, with subject-by-training interaction being present (95% CI: Wpeak 0.09–0.24, LT 0.06–0.18, VO2peak 0.27–2.32). All other measurements did not exhibit significant changes. Fiber type IIa proportions at baseline was significantly associated with all physiological variables (p < 0.05), and citrate synthetase and cytochrome-c oxidase levels at baseline and overtime (i.e., intercept and slope) presented significant covariance (p < 0.05). Finally, low correlations between performance and mitochondrial markers were observed.

Conclusion
We identified a significant subject-by-training interaction for the performance markers. While for all other measures within-subject variability was too large and interindividual differences in training efficacy could not be verified. Changes in measurements in response to exercise were not correlated, and such disconnection should be further investigated by future studies.

Keywordsexercise; mitochondria; training variability; VO2peak
Year2021
JournalPhysiological Reports
Journal citation9 (15), p. Article: e14962
PublisherJohn Wiley & Sons
ISSN2051-817X
Digital Object Identifier (DOI)https://doi.org/10.14814/phy2.14962
PubMed ID34327858
Scopus EID2-s2.0-85112384146
PubMed Central IDPMC8322753
Open accessPublished as ‘gold’ (paid) open access
Research or scholarlyResearch
Page range1-12
FunderNational Health and Medical Research Council (NHMRC)
Australian Research Council (ARC)
Publisher's version
License
File Access Level
Open
Output statusPublished
Publication dates
Online29 Jul 2021
Publication process dates
Accepted17 Jun 2021
Deposited23 Nov 2021
ARC Funded ResearchThis output has been funded, wholly or partially, under the Australian Research Council Act 2001
Grant IDNHMRC/1140644
NHMRC/11577321
ARC/DP190103081
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Early inflammatory and myogenic responses to resistance exercise in the elderly
Mathers, Jessica L., Farnfield, Michelle M., Garnham, Andrew P., Caldow, Marissa K., Cameron-Smith, David and Peake, Jonathan M.. (2012). Early inflammatory and myogenic responses to resistance exercise in the elderly. Muscle & Nerve. 46(3), pp. 407 - 412. https://doi.org/10.1002/mus.23317
Evaluation of the MAIIA dipstick test to detect recombinant human erythropoietin in plasma
Ashenden, Michael, Sharpe, Ken, Garnham, Andrew and Gore, Christopher J.. (2012). Evaluation of the MAIIA dipstick test to detect recombinant human erythropoietin in plasma. Journal of Pharmaceutical and Biomedical Analysis. 67-68, pp. 123 - 128. https://doi.org/10.1016/j.jpba.2012.04.025
Activation of mTOR signalling in young and old human skeletal muscle in response to combined resistance exercise and whey protein ingestion
Farnfield, Michelle M., Breen, Leigh, Carey, Kate A., Garnham, Andrew and Cameron-Smith, David. (2012). Activation of mTOR signalling in young and old human skeletal muscle in response to combined resistance exercise and whey protein ingestion. Applied Physiology, Nutrition and Metabolism. 37(1), pp. 21 - 30. https://doi.org/10.1139/H11-132
Low muscle glycogen concentration does not suppress the anabolic response to resistance exercise
Camera, Donny, West, D, Burd, N, Phillips, S, Garnham, A, Hawley, John and Coffey, Vernon. (2012). Low muscle glycogen concentration does not suppress the anabolic response to resistance exercise. Journal of Applied Physiology. 113(2), pp. 206 - 214. https://doi.org/10.1152/japplphysiol.00395.2012
Nutrient provision increases signalling and protein synthesis in human skeletal muscle after repeated sprints
Coffey, Vernon, Moore, Daniel, Burd, N, Rerecich, T, Stellingwerff, T, Garnham, A, Phillips, S and Hawley, John. (2011). Nutrient provision increases signalling and protein synthesis in human skeletal muscle after repeated sprints. European Journal of Applied Physiology. 111(7), pp. 1473 - 1483. https://doi.org/10.1007/s00421-010-1768-0
Impact of resistance exercise training on interleukin-6 and JAK/STAT in young men
Trenerry, Marissa K., Della Gatta, Paul A., Larsen, Amy E., Garnham, Andrew P. and Cameron-Smith, David. (2011). Impact of resistance exercise training on interleukin-6 and JAK/STAT in young men. Muscle & Nerve. 43(3), pp. 385 - 392. https://doi.org/10.1002/mus.21875
Impact of resistance exercise training on interleukin-6 and JAK/STAT in young men
Trenerry, Melissa K., Della Gatta, Paul A., Larson, Amy E. and Garnham, Andrew P.. (2011). Impact of resistance exercise training on interleukin-6 and JAK/STAT in young men. Muscle & Nerve. 43(3), pp. 385 - 392. https://doi.org/10.1002/mus.21875
Vitamin D status and musculoskeletal health in adolescent male ballet dancers a pilot study
Ducher, Gaele, Kukuljan, Sonja, Hill, B., Garnham, Andrew P., Nowson, Carol A., Kimlin, M. G. and Cook, Jill. (2011). Vitamin D status and musculoskeletal health in adolescent male ballet dancers a pilot study. Journal of Dance Medicine and Science. 15(3), pp. 99 - 107.
Current markers of the Athlete Blood Passport do not flag microdose EPO doping
Ashenden, Michael, Gough, Clare E., Garnham, Andrew, Gore, Christopher J. and Sharpe, Ken. (2011). Current markers of the Athlete Blood Passport do not flag microdose EPO doping. European Journal of Applied Physiology. 111(9), pp. 2307 - 2314. https://doi.org/10.1007/s00421-011-1867-6
Exercise training increases adipose tissue GLUT4 expression in patients with type 2 diabetes
Hussey, Sophie E., McGee, S. L., Garnham, Andrew, Wentworth, John M., Jeukendrup, A. E. and Hargreaves, M.. (2011). Exercise training increases adipose tissue GLUT4 expression in patients with type 2 diabetes. Diabetes, Obesity and Metabolism. 13(10), pp. 959 - 962. https://doi.org/10.1111/j.1463-1326.2011.01426.x
Acute signalling responses to intense endurance training commenced with low or normal muscle glycogen : Experimental Physiology-Research Paper
Yeo, W, McGee, S, Carey, A, Paton, C, Garnham, A, Hargreaves, M and Hawley, John. (2010). Acute signalling responses to intense endurance training commenced with low or normal muscle glycogen : Experimental Physiology-Research Paper. Experimental Physiology. 95(2), pp. 351 - 358. https://doi.org/10.1113/expphysiol.2009.049353
Cytokine responses to carbohydrate ingestion during recovery from exercise-induced muscle injury
Ross, M, Halson, Shona, Suzuki, K, Garnham, A, Hawley, John, Cameron-Smith, David and Peake, J. (2010). Cytokine responses to carbohydrate ingestion during recovery from exercise-induced muscle injury. Journal of Interferon and Cytokine Research. 30(5), pp. 329 - 337. https://doi.org/10.1089/jir.2009.0079
Effect of consecutive repeated sprint and resistance exercise bouts on acute adaptive responses in human skeletal muscle
Coffey, Vernon Glenn, Jemiolo, Bozena, Edge, Johann, Garnham, Andrew P., Trappe, Scott W. and Hawley, John Alan. (2009). Effect of consecutive repeated sprint and resistance exercise bouts on acute adaptive responses in human skeletal muscle. American Journal of Physiology - Regulatory Integrative and Comparative Physiology. 297(5), pp. 1441 - 1451. https://doi.org/10.1152/ajpregu.00351.2009
Consecutive bouts of diverse contractile activity alter acute responses in human skeletal muscle
Coffey, Vernon Glenn, Pilegaard, Henriette, Garnham, Andrew P., O'Brien, Brendan J. and Hawley, John Alan. (2009). Consecutive bouts of diverse contractile activity alter acute responses in human skeletal muscle. Journal of Applied Physiology. 106(4), pp. 1187 - 1197. https://doi.org/10.1152/japplphysiol.91221.2008
Skeletal muscle adaptation and performance responses to once a day versus twice every second day endurance training regimens
Yeo, Wee Kian, Paton, Carl D., Garnham, Andrew P., Burke, Louise M., Carey, Andrew L. and Hawley, John Alan. (2008). Skeletal muscle adaptation and performance responses to once a day versus twice every second day endurance training regimens. Journal of Applied Physiology. 105(5), pp. 1462 - 1470. https://doi.org/10.1152/japplphysiol.90882.2008
Fat adaptation followed by carbohydrate restoration increases AMPK activity in skeletal muscle from trained humans
Yeo, Wee Kian, Lessard, Sarah J., Chen, Zhi-Ping, Garnham, Andrew P., Burke, Louise, Rivas, Donato A., Kemp, Bruce Ernest and Hawley, John Alan. (2008). Fat adaptation followed by carbohydrate restoration increases AMPK activity in skeletal muscle from trained humans. Journal of Applied Physiology. 105(5), pp. 1519 - 1526. https://doi.org/10.1152/japplphysiol.90540.2008