2020
DOI: 10.1249/mss.0000000000002585
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Resistance Training Load Effects on Muscle Hypertrophy and Strength Gain: Systematic Review and Network Meta-analysis

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Cited by 119 publications
(120 citation statements)
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References 70 publications
(480 reference statements)
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“…For example, a meta-analysis by Schoenfeld and colleagues (Schoenfeld, Grgic et al, 2017) found muscle hypertrophy and isometric strength development was similar with higher-load (>60% 1-RM or ≤15-RM) versus lower-load (≤60% 1-RM or >15-RM) RT, while higher-load RT promoted greater dynamic 1-RM strength gain. Lopez and colleagues (Lopez et al, 2020) also noted superior dynamic 1-RM strength gain for both high-load (≤8-RM) and moderate-load (9-15-RM) RT versus low-load RT (>15-RM), and no influence of RT load on muscle hypertrophy.…”
Section: Introductionmentioning
confidence: 91%
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“…For example, a meta-analysis by Schoenfeld and colleagues (Schoenfeld, Grgic et al, 2017) found muscle hypertrophy and isometric strength development was similar with higher-load (>60% 1-RM or ≤15-RM) versus lower-load (≤60% 1-RM or >15-RM) RT, while higher-load RT promoted greater dynamic 1-RM strength gain. Lopez and colleagues (Lopez et al, 2020) also noted superior dynamic 1-RM strength gain for both high-load (≤8-RM) and moderate-load (9-15-RM) RT versus low-load RT (>15-RM), and no influence of RT load on muscle hypertrophy.…”
Section: Introductionmentioning
confidence: 91%
“…Defining RT intensity is contentious (Fisher & Smith, 2012;Steele, 2014) and may describe either the loads lifted (which define absolute and relative intensity), or the degree of effort applied, during a set (Morton et al, 2019). Previous studies exploring the influence of RT loads on physiological adaptations have shown comparable muscle hypertrophy across a wide spectrum of loads (Lopez et al, 2020;Schoenfeld, Grgic et al, 2017), and greater dynamic, but not isometric, strength gains with higher-versus lower loads (Schoenfeld, Grgic et al, 2017). For example, a meta-analysis by Schoenfeld and colleagues (Schoenfeld, Grgic et al, 2017) found muscle hypertrophy and isometric strength development was similar with higher-load (>60% 1-RM or ≤15-RM) versus lower-load (≤60% 1-RM or >15-RM) RT, while higher-load RT promoted greater dynamic 1-RM strength gain.…”
Section: Introductionmentioning
confidence: 99%
“…A maioria dos estudos incluídos nesta revisão não mostrou diferença significativa na hipertrofia e espessura muscular quando comparadas cargas baixas, moderadas e altas JENKINS et al , 2016;JENKINS et al, 2017;LASEVICIUS et al, 2019;LIM et al, 2019;MORTON et al, 2016;NETREBA et al, 2013;NÓBREGA et al, 2018;POPOV et al, 2006;SCHOENFELD et al, 2015;TANIMOTO et al, 2009;TANIMOTO et al, 2008). Embora esses resultados estejam de acordo com as revisões sistemáticas e metanálises publicadas anteriormente (LOPEZ et al, 2020;SCHOENFELD et al, 2016), destacamos que poucos estudos experimentais utilizaram a técnica de biópsia muscular para uma avaliação histológica direta de hipertrofia muscular (CAMPOS et al, 2002;LIM et al, 2019;MORTON et al, 2016;NETREBA et al, 2013). Desta forma, as conclusões baseadas nas evidências atuais só podem ser extrapoladas para técnicas de imagem que avaliaram o músculo como um todo (ou seja, ultra-som e ressonância magnética).…”
Section: Efeitos Do Tr Com Carga Baixa Moderada E Alta Na Hipertrofia E Espessura Muscularunclassified
“…Por outro lado, quando o treinamento foi realizado com baixa carga, o protocolo que levou à falha muscular demonstrou maior percentual de hipertrofia (7,8%) em relação ao não falha (2,8%). De acordo com o princípio do tamanho proposto por Henneman (1985), as unidades motoras são recrutadas da menor para a maior (LOPEZ et al, 2020) (ou seja, conforme os requisitos de produção de força aumentam, unidades motoras com maior limiar de excitabilidade passam a ser preferencialmente recrutadas em relação àqueles com menor limiar de excitabilidade). Nesse sentido, é possível que o TR com cargas baixas levado à falha muscular momentânea, primeiro recrute as unidades motoras de baixo limiar e no momento em que essas unidades motoras se tornem fatigadas (GRGIC et al, 2018), há um recrutamento máximo ou quase máximo de unidades motoras de limiar superior (LOPEZ et al, 2020), o que poderia induzir hipertrofia muscular comparável ao TR com altas cargas.…”
Section: Efeitos Do Tr Com Carga Baixa Moderada E Alta Na Hipertrofia E Espessura Muscularunclassified
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