Intervalos de recuperação entre séries de contrações isocinéticas : diferença entre gêneros

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

PURPOSE: To compare the effect of two different rest intervals (RIs) between sets of isokinetic knee extension exercise on Peak Torque (PT), Total Work (TW), and fatigue index (FI) between young men and women. METHODS: 17 men (26.75 4.73 yrs, 79,06 9,38 kg e 175,69 4,66 cm) and 16 women (27.18 4.05 yrs, 56,84 6,93 kg e 162,56 7,02 cm) performed 3 sets of 10 unilateral isokinetic knee extension repetitions at 60/s and 180/s. The rest intervals between sets were 1 and 2 minutes and were counterbalanced across 2 testing days, separated by a minimum of 72 hours. The work-to-rest ratio was 1:3 and 1:6.for 60/s and 1:6 and 1:12 for 180/s. Subjects were recreational resistance trained programs that included resistance exercise within the last 6 months. RESULTS: The results were as follows: Men and women showed a significant (p<0,05) decrees in PT and TW with 1 and 2min RI at 60/s. At 180/s, both gender, showed a decline in PT and TW only with 1min RI. Women also appeared to be more fatigue resistant than men at 180/s. The differences between genders on FI were grater at 180/s when compared to 60/s. CONCLUSION: These results suggest that during maximal-effort muscle isokinetic contractions at 60/s, males and females exhibit a similar susceptibility to muscle fatigue during isokinetic knee extension exercise. Also, it appears that a 1:6 work-to-rest ratio is not sufficient to promote full muscle strength recovery for this specific protocol in recreational resistance trained young men and women. With increased of speed, the difference between genders on FI become more apparent.

ASSUNTO(S)

gender differences diferença entre gêneros isokinetic isocinético fadiga muscular educacao fisica muscle fatigue

ACESSO AO ARTIGO

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