Skeletal Muscle Fiber Adaptations Following Resistance Training Using Repetition Maximums or Relative Intensity

Sports
Kevin CarrollMichael Stone

Abstract

The purpose of the study was to compare the physiological responses of skeletal muscle to a resistance training (RT) program using repetition maximum (RM) or relative intensity (RISR). Fifteen well-trained males underwent RT 3 d·wk-1 for 10 weeks in either an RM group (n = 8) or RISR group (n = 7). The RM group achieved a relative maximum each day, while the RISR group trained based on percentages. The RM group exercised until muscular failure on each exercise, while the RISR group did not reach muscular failure throughout the intervention. Percutaneous needle biopsies of the vastus lateralis were obtained pre-post the training intervention, along with ultrasonography measures. Dependent variables were: Fiber type-specific cross-sectional area (CSA); anatomical CSA (ACSA); muscle thickness (MT); mammalian target of rapamycin (mTOR); adenosine monophosphate protein kinase (AMPK); and myosin heavy chains (MHC) specific for type I (MHC1), type IIA (MHC2A), and type IIX (MHC2X). Mixed-design analysis of variance and effect size using Hedge's g were used to assess within- and between-group alterations. RISR statistically increased type I CSA (p = 0.018, g = 0.56), type II CSA (p = 0.012, g = 0.81), ACSA (p = 0.002, g = 0.53), and MT...Continue Reading

References

Jan 1, 1994·European Journal of Applied Physiology and Occupational Physiology·A C FryR S Staron
Feb 1, 1993·Journal of Applied Physiology·G R AdamsG A Dudley
Jul 7, 2000·Muscle & Nerve·J L Andersen, P Aagaard
Sep 22, 2000·Microscopy Research and Technique·D Pette, R S Staron
Feb 18, 2005·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·P J AthertonH Wackerhage
Aug 10, 2005·The International Journal of Biochemistry & Cell Biology·David J Glass
Sep 24, 2005·Proceedings of the National Academy of Sciences of the United States of America·Takahiro NobukuniGeorge Thomas
Nov 4, 2005·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Vernon G CoffeyJohn A Hawley
Jun 29, 2006·American Journal of Physiology. Endocrinology and Metabolism·Charles A StuartArny A Ferrando
Nov 11, 2006·Medicine and Science in Sports and Exercise·Keith Baar
Dec 19, 2008·Medicine and Science in Sports and Exercise·William G HopkinsJuri Hanin
Mar 19, 2009·European Journal of Applied Physiology·Stephan KlossnerMartin Flueck
Mar 20, 2010·Journal of Applied Physiology·Nicholas LudenScott Trappe
Sep 18, 2010·Journal of Strength and Conditioning Research·Brad J Schoenfeld
Apr 22, 2011·The Journal of Clinical Endocrinology and Metabolism·Andrew S LayneCharles A Stuart
Dec 17, 2011·International Journal of Sports Physiology and Performance·Keith B PainterMichael H Stone
Apr 27, 2012·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Nicholas A BurdStuart M Phillips
Oct 1, 2014·PloS One·Kevin MurachScott Trappe
Apr 11, 2015·European Journal of Applied Physiology·Juha P AhtiainenJuha J Hulmi
Aug 19, 2015·European Journal of Applied Physiology·Felipe DamasCarlos Ugrinowitsch
May 26, 2017·The Journal of Physiology·Gregory K PottsTroy A Hornberger
Oct 2, 2017·European Journal of Applied Physiology·Ricardo Morán-NavarroJesús G Pallarés
May 29, 2018·International Journal of Sports Physiology and Performance·Kevin M CarrollMichael H Stone

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Citations

Jul 19, 2020·Scandinavian Journal of Medicine & Science in Sports·Fernando Pareja-BlancoManuel Ortega-Becerra
Sep 12, 2020·International Journal of Sports Physiology and Performance·Jay A CollisonFlorentina J Hettinga
Aug 15, 2020·Journal of Science and Medicine in Sport·Erica F F CorradiMauro Heleno Chagas
Jan 21, 2021·Journal of Functional Morphology and Kinesiology·S Kyle TravisMichael H Stone
Jun 9, 2021·Sports Medicine·Timothy J SuchomelMichael H Stone

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Methods Mentioned

BETA
Biopsy
biopsies
electrophoresis

Software Mentioned

JASP
ImageJ
Excel
LOGIQView

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