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<p>This study compared the effects of a full-body resistance training session performed to momentary muscular failure (RTF) or non-failure (RTNF) on mechanical, perceptual, metabolic, neuromuscular, cardiovascular, and autonomic responses in trained men. In a randomized crossover design, six men (25.5 ± 3.3 years; 77.8 ± 6.2&#xa0;kg; 174.5 ± 5.1&#xa0;cm) completed two sessions of six exercises. RTF sets were performed to failure at 100% 10-repetition maximum (10RM), while RTNF sets consisted of 10 repetitions at 85% 10RM. Perceptual, metabolic, hormonal, cardiovascular, and autonomic responses, alongside markers of tissue damage and neuromuscular function, were monitored for 72&#xa0;h post-RT. Data were analyzed via Generalized Estimating Equations. RTF induced greater perceived exertion (<i>p</i> &lt; 0.001) with fewer repetitions per set and reduced volume in specific movements (<i>p</i> &lt; 0.05), despite similar total session volume (<i>p</i> &gt; 0.05). RTF elicited higher lactate (<i>p</i> = 0.003) and cortisol (<i>p</i> &lt; 0.001). RTF exacerbated tissue damage markers (creatine kinase and lactate dehydrogenase, <i>p</i> &lt; 0.001) and soreness (<i>p</i> &lt; 0.05), leading to delayed countermovement jump recovery (<i>p</i> &lt; 0.001) through 72&#xa0;h. Conversely, RTNF demonstrated faster perceived recovery (<i>p</i> &lt; 0.001) and similar autonomic preservation (<i>p</i> &gt; 0.05). Acute cardiovascular strain was higher in RTF (<i>p</i> &lt; 0.05), with no residual effects. Although the small sample size warrants cautious interpretation of inferential statistics, RTF delays recovery without acute functional benefits. Since proximity-to-failure drives physiological stress, RTNF proves to be more efficient and sustainable.</p>

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Acute fatigue and recovery responses to resistance training performed to momentary muscular failure: an exploratory multimodal physiological study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月29日

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  • João Guilherme Vieira,
  • Bruno Pascoalini da Silva,
  • Yuri Campos,
  • Marcelo Ricardo Dias,
  • Pedro Lima Souza,
  • Victor S. de Queiros,
  • Okan Kamis,
  • Michal Wilk,
  • Krzysztof Fostiak,
  • Jaworski Łukasz,
  • Jefferson da Silva Novaes,
  • Jeferson Macedo Vianna

摘要

This study compared the effects of a full-body resistance training session performed to momentary muscular failure (RTF) or non-failure (RTNF) on mechanical, perceptual, metabolic, neuromuscular, cardiovascular, and autonomic responses in trained men. In a randomized crossover design, six men (25.5 ± 3.3 years; 77.8 ± 6.2 kg; 174.5 ± 5.1 cm) completed two sessions of six exercises. RTF sets were performed to failure at 100% 10-repetition maximum (10RM), while RTNF sets consisted of 10 repetitions at 85% 10RM. Perceptual, metabolic, hormonal, cardiovascular, and autonomic responses, alongside markers of tissue damage and neuromuscular function, were monitored for 72 h post-RT. Data were analyzed via Generalized Estimating Equations. RTF induced greater perceived exertion (p < 0.001) with fewer repetitions per set and reduced volume in specific movements (p < 0.05), despite similar total session volume (p > 0.05). RTF elicited higher lactate (p = 0.003) and cortisol (p < 0.001). RTF exacerbated tissue damage markers (creatine kinase and lactate dehydrogenase, p < 0.001) and soreness (p < 0.05), leading to delayed countermovement jump recovery (p < 0.001) through 72 h. Conversely, RTNF demonstrated faster perceived recovery (p < 0.001) and similar autonomic preservation (p > 0.05). Acute cardiovascular strain was higher in RTF (p < 0.05), with no residual effects. Although the small sample size warrants cautious interpretation of inferential statistics, RTF delays recovery without acute functional benefits. Since proximity-to-failure drives physiological stress, RTNF proves to be more efficient and sustainable.