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BIBTEX RIS

Longer repetition duration increases muscle activation and blood lactate response in matched resistance training protocols

2016; UNIVERSIDADE EST.PAULISTA JÚLIO DE MESQUITA FILHO; Volume: 22; Issue: 1 Linguagem: Inglês

10.1590/s1980-65742016000100005

ISSN

1980-6574

Autores

Hugo César Martins-Costa, Rodrigo César Ribeiro Diniz, Fernando Vítor Lima, Sandra Machado, Rafael Silva Valle de Almeida, André Gustavo Pereira de Andrade, Mauro Heleno Chagas,

Tópico(s)

Cardiovascular and exercise physiology

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.

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