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Type: Artigo de periódico
Title: Time Course Of Resistance Training-induced Muscle Hypertrophy In The Elderly
Author: Lixandrao
Manoel E.; Damas
Felipe; Chacon-Mikahil
Mara P. T.; Cavaglieri
Claudia R.; Ugrinowitsch
Carlos; Bottaro
Martim; Vechin
Felipe C.; Conceicao
Miguel S.; Berton
Ricardo; Libardi
Cleiton A.
Abstract: LixandrAo, ME, Damas, F, Chacon-Mikahil, MPT, Cavaglieri, CR, Ugrinowitsch, C, Bottaro, M, Vechin, FC, ConceicAo, MS, Berton, R, and Libardi, CA. Time course of resistance training-induced muscle hypertrophy in the elderly. J Strength Cond Res 30(1): 159-163, 2016Extended periods of resistance training (RT) induce muscle hypertrophy. Nevertheless, to date, no study has investigated the time window necessary to observe significant changes in muscle cross-sectional area (CSA) in older adults. Therefore, this study investigated the time course of muscle hypertrophy after 10 weeks (20 sessions) of RT in the elderly. Fourteen healthy older subjects were randomly allocated in either the RT (n: 6) or control group (n: 8). The RT was composed of 4 sets x 10 repetitions (70-80% 1 repetition maximum [1RM]) in a leg press machine. The time course of vastus lateralis muscle hypertrophy (CSA) was assessed on a weekly basis by mode-B ultrasonography. Leg press muscle strength was assessed by dynamic 1RM test. Our results demonstrated that the RT group increased leg press 1RM by 42% (p 0.05) after 10 weeks of training. Significant increases in vastus lateralis muscle CSA were observed only after 18 sessions of training (9 weeks; p 0.05; 7.1%). In conclusion, our training protocol promoted muscle mass accrual in older subjects, and this was only observable after 18 sessions of RT (9 weeks).
Subject: Cross-sectional Area
Anabolic Resistance
Citation: Time Course Of Resistance Training-induced Muscle Hypertrophy In The Elderly. Lippincott Williams & Wilkins, v. 30, p. 159-163 JAN-2016.
Rights: fechado
Identifier DOI: 10.1519/JSC.0000000000001019
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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