Longer repetition duration increases muscle activation and blood lactate response in matched resistance training protocols
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Universidade Federal de Minas Gerais
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Artigo de periódico
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Resumo
This study analyzed the effect of different repetition durations on electromyographic and blood lactate
responses of the bench press exercise. Fifteen recreationally trained male volunteers completed two training protocols,
matched for intensity (% one-repetition maximum; 1RM), number of sets, number of repetitions, and rest intervals. One
of the protocols was performed with a repetition duration of 4 s (2 s concentric: 2 s eccentric; 2:2 protocol), whereas
the second protocol had a repetition duration of 6 s (2 s concentric: 4 s eccentric; 2:4 protocol). The results showed
higher normalized integrated electromyography (pectoralis major and triceps brachii) for the 2:4 protocol. Blood lactate
concentration was also higher in the 2:4 protocol across all sets. These results show that adding 2 s to the eccentric
action in matched training protocols increases muscle activation and blood lactate response, which reinforces the notion
that increasing repetition duration is an alternative load progression in resistance training.
Abstract
Assunto
Ácido Láctico, Treinamento de Força
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Resistance training, Electromygraphy, Lactate
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https://www.scielo.br/j/motriz/a/pHhmCpsFtr646J8thjLfsRm/?lang=en