Myofibre hypertrophy in the absence of changes to satellite cell content following concurrent exercise training in young healthy men

Journal article


Shamim, Baubak, Camera, Donny M. and Whitfield, Jamie. (2021). Myofibre hypertrophy in the absence of changes to satellite cell content following concurrent exercise training in young healthy men. Frontiers in Physiology. 12, p. Article 625044. https://doi.org/10.3389/fphys.2021.625044
AuthorsShamim, Baubak, Camera, Donny M. and Whitfield, Jamie
Abstract

Concurrent exercise training has been suggested to create an ‘interference effect,’ attenuating resistance training-based skeletal muscle adaptations, including myofibre hypertrophy. Satellite cells support myofibre hypertrophy and are influenced by exercise mode. To determine whether satellite cells contribute to the ‘interference effect’ changes in satellite cell and myonuclear content were assessed following a period of training in 32 recreationally active males (age: 25 ± 5 year; body mass index: 24 ± 3 kg⋅m–2; mean ± SD) who undertook 12-week of either isolated (3 d⋅w–1) resistance (RES; n = 10), endurance (END; n = 10), or alternate day (6 d⋅w–1) concurrent (CET, n = 12) training. Skeletal muscle biopsies were obtained pre-intervention and after 2, 8, and 12 weeks of training to determine fibre type-specific cross-sectional area (CSA), satellite cell content (Pax7+DAPI+), and myonuclei (DAPI+) using immunofluorescence microscopy. After 12 weeks, myofibre CSA increased in all training conditions in type II (P = 0.0149) and mixed fibres (P = 0.0102), with no difference between conditions. Satellite cell content remained unchanged after training in both type I and type II fibres. Significant correlations were observed between increases in fibre type-specific myonuclear content and CSA of Type I (r = 0.63, P < 0.0001), Type II (r = 0.69, P < 0.0001), and mixed fibres (r = 0.72, P < 0.0001). Resistance, endurance, and concurrent training induce similar myofibre hypertrophy in the absence of satellite cell and myonuclear pool expansion. These findings suggest that myonuclear accretion via satellite cell fusion is positively correlated with hypertrophy after 12 weeks of concurrent training, and that individuals with more myonuclear content displayed greater myofibre hypertrophy.

Keywordsconcurrent exercise; resistance exercise; endurance exercise; skeletal muscle; satellite cells
Year2021
JournalFrontiers in Physiology
Journal citation12, p. Article 625044
PublisherFrontiers Research Foundation
ISSN1664-042X
Digital Object Identifier (DOI)https://doi.org/10.3389/fphys.2021.625044
PubMed ID34149439
Scopus EID2-s2.0-85108201870
PubMed Central IDPMC8213074
Open accessPublished as ‘gold’ (paid) open access
Research or scholarlyResearch
Page range1-13
FunderAustralian Catholic University (ACU)
Publisher's version
License
File Access Level
Open
Output statusPublished
Publication dates
Online04 Jun 2021
Publication process dates
Accepted11 May 2021
Deposited18 Nov 2021
Grant IDACU/36331
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Whitfield, J., Ludzki, A., Heigenhauser, G. J. F., Senden, Joan M. G., Verdijk, Lex B., van Loon, Luc J. C., Spriet, L. L. and Holloway, Graham P.. (2016). Beetroot juice supplementation reduces whole body oxygen consumption but does not improve indices of mitochondrial efficiency in human skeletal muscle. Journal of Physiology. 594(2), pp. 421 - 435. https://doi.org/10.1113/JP270844
Modulation of autophagy signaling with resistance exercise and protein ingestion following short-term energy deficit
Smiles, William J., Areta, José L., Coffey, Vernon G., Phillips, Stuart M., Moore, Daniel R., Stellingwerff, Trent, Burke, Louise M., Hawley, John A. and Camera, Donny M.. (2015). Modulation of autophagy signaling with resistance exercise and protein ingestion following short-term energy deficit. American Journal of Physiology - Regulatory Integrative and Comparative Physiology. 309(5), pp. R603-R612. https://doi.org/10.1152/ajpregu.00413.2014
Taurine and skeletal muscle function
Spriet, Lawrence L. and Whitfield, Jamie. (2015). Taurine and skeletal muscle function. Current Opinion in Clinical Nutrition and Metabolic Care. 18(1), pp. 96 - 101. https://doi.org/10.1097/MCO.0000000000000135
Need for measures of satellite cell activation along with muscle protein synthesis?
Camera, Donny and Hawley, John. (2015). Need for measures of satellite cell activation along with muscle protein synthesis? Journal of Applied Physiology. 118(4), pp. 500 - 500. https://doi.org/10.1152/japplphysiol.00609.2014.
Activation of AMPK alpha2 is not required for mitochondrial FAT/CD36 accumulation during exercise
Monaco, Cynthia, Whitfield, Jamie, Jain, Swati S., Spriet, Lawrence L., Bonen, Arend and Holloway, Graham P.. (2015). Activation of AMPK alpha2 is not required for mitochondrial FAT/CD36 accumulation during exercise. PLoS ONE. 10(5), pp. 1 - 15. https://doi.org/10.1371/journal.pone.0126122
Alcohol ingestion impairs maximal post-exercise rates of myofibrillar protein synthesis following a single bout of concurrent training
Parr, Evelyn, Camera, Donny, Areta, José, Burke, Louise, Phillips, Stuart, Hawley, John A. and Coffey, Vernon. (2014). Alcohol ingestion impairs maximal post-exercise rates of myofibrillar protein synthesis following a single bout of concurrent training. PLoS ONE. 9(2), pp. 1 - 9. https://doi.org/10.1371/journal.pone.0088384
Variable effects of 12 weeks of omega-3 supplementation on resting skeletal muscle metabolism
Gerling, Christopher J., Whitfield, Jamie, Mukai, Kazutaka and Spriet, Lawrence L.. (2014). Variable effects of 12 weeks of omega-3 supplementation on resting skeletal muscle metabolism. Applied Physiology, Nutrition and Metabolism. 39(9), pp. 1083 - 1091. https://doi.org/10.1139/apnm-2014-0049
Beyond muscle hypertrophy: Why dietary protein is important for endurance athletes
Moore, Daniel, Camera, Donny, Areta, José and Hawley, John A.. (2014). Beyond muscle hypertrophy: Why dietary protein is important for endurance athletes. Applied Physiology, Nutrition and Metabolism. 39(9), pp. 987 - 997. https://doi.org/10.1139/apnm-2013-0591
Omega-3 supplementation alters mitochondrial membrane composition and respiration kinetics in human skeletal muscle
Herbst, E. A. F., Paglialunga, S., Gerling, C., Whitfield, Jamie, Mukai, K., Chabowski, Adrian, Heigenhauser, G. J. F., Spriet, L. L. and Holloway, Graham P.. (2014). Omega-3 supplementation alters mitochondrial membrane composition and respiration kinetics in human skeletal muscle. The Journal of Physiology. 592(6), pp. 1341 - 1352. https://doi.org/10.1113/jphysiol.2013.267336
Reduced resting skeletal muscle protein synthesis is reduced by resistance exercise and protein ingestion following short-term energy deficit
Areta, José, Burke, Louise, Camera, Donny, West, Daniel, Crawshay, Siobhan, Moore, Daniel, Stellingwerff, Trent, Phillips, Stuart, Hawley, John A. and Coffey, Vernon. (2014). Reduced resting skeletal muscle protein synthesis is reduced by resistance exercise and protein ingestion following short-term energy deficit. American Journal of Physiology - Endocrinology and Metabolism. 306(8), pp. E989 - E997. https://doi.org/10.1152/ajpendo.00590.2013
Beetroot juice supplementation does not improve performance of elite 1500-m runners
Boorsma, Robert K., Whitfield, Jamie and Spriet, Lawrence L.. (2014). Beetroot juice supplementation does not improve performance of elite 1500-m runners. Medicine and Science in Sports and Exercise. 46(12), pp. 2326 - 2334. https://doi.org/10.1249/MSS.0000000000000364
Meteorin-like is a hormone that regulates immune-adipose interactions to increase beige fat thermogenesis
Rao, Rajesh, Long, Jonathan, White, James, Svensson, Katrin, Lou, Jesse, Lokurkar, Isha, Jedrychowski, Mark, Ruas, Jorge, Wrann, Christiane, Lo, James, Camera, Donny, Lachey, Jenn, Gygi, Steven, Seehra, Jasbir, Hawley, John and Spiegelman, Bruce. (2014). Meteorin-like is a hormone that regulates immune-adipose interactions to increase beige fat thermogenesis. Cell. 157(6), pp. 1279 - 1291. https://doi.org/10.1016/j.cell.2014.03.065
Meteorin-like Is a Hormone that Regulates Immune-Adipose Interactions to Increase Beige Fat Thermogenesis
Rao, Rajesh, Long, Jonathan Z., White, James P., Svensson, Katrin J., Lou, Jesse, Lokurkar, Isha, Jedrychowski, Mark P., Ruas, Jorge L., Wrann, Christine D., Camera, Donny, Lachey, Jenn, Gygi, Steven, Seehra, Jasbir, Hawley, John and Spiegelman, Bruce M.. (2014). Meteorin-like Is a Hormone that Regulates Immune-Adipose Interactions to Increase Beige Fat Thermogenesis. Cell. 157(6), pp. 1279 - 1291. https://doi.org/10.1016/j.cell.2014.03.065
ERK1/2 in the brain mediates the effects of central resistin on reducing thermogenesis in brown adipose tissue
Kosari, Samin, Camera, Donny Michael, Hawley, John Alan, Stebbing, Martin and Badoer, Emilio. (2013). ERK1/2 in the brain mediates the effects of central resistin on reducing thermogenesis in brown adipose tissue. International Journal of Physiology, Pathophysiology and Pharmacology. 5(3), pp. 184 - 189.
Timing and distribution of protein ingestion during prolonged recovery from resistance exercise alters myofibrillar protein synthesis
Areta, José, Burke, Louise, Ross, M, Camera, Donny, West, D, Broad, E, Jeacocke, N, Moore, Daniel, Stellingwerff, T and Phillips, S. (2013). Timing and distribution of protein ingestion during prolonged recovery from resistance exercise alters myofibrillar protein synthesis. The Journal of Physiology. https://doi.org/10.1113/jphysiol.2012.244897
Skeletal muscle respiratory capacity is enhanced in rats consuming an obesogenic Western diet
Stephenson, E, Camera, Donny, Jenkins, T, Kosari, S, Lee, Joohyung, Hawley, John and Stepto, N. (2012). Skeletal muscle respiratory capacity is enhanced in rats consuming an obesogenic Western diet. American Journal of Physiology - Endocrinology and Metabolism. 302(12), pp. E1541 - E1549. https://doi.org/10.1152/ajpendo.00590.2011
Sex-based comparisons of myofibrillar protein synthesis after resistance exercise in the fed state
West, D, Burd, N, Churchward-Venne, T, Camera, Donny, Mitchell, Cameron, Baker, S, Hawley, John, Coffey, Vernon and Phillips, S. (2012). Sex-based comparisons of myofibrillar protein synthesis after resistance exercise in the fed state. Journal of Applied Physiology. 112(11), pp. 1805 - 1813. https://doi.org/10.1152/japplphysiol.00170.2012
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
No role for early IGF-1 signalling in stimulating acute 'muscle building' responses
Burd, Nicholas A., West, D. W., Camera, Donny and Breen, L.. (2011). No role for early IGF-1 signalling in stimulating acute 'muscle building' responses. The Journal of Physiology. https://doi.org/10.1113/jphysiol.2011.207332
Early time course of akt phosphorylation after endurance and resistance exercise
Camera, Donny, Edge, J, Short, M, Hawley, John and Coffey, Vernon. (2010). Early time course of akt phosphorylation after endurance and resistance exercise. Medicine and Science in Sports and Exercise. 42(10), pp. 1843 - 1852. https://doi.org/10.1249/MSS.0b013e3181d964e4
Short-term endurance training does not alter the oxidative capacity of human subcutaneous adipose tissue
Camera, Donny, Anderson, Malcolm, Hawley, John and Carey, A. (2010). Short-term endurance training does not alter the oxidative capacity of human subcutaneous adipose tissue. European Journal of Applied Physiology. 109(2), pp. 307 - 316. https://doi.org/10.1007/s00421-010-1356-3