| Popis: |
Purpose: In this study, we examined sex differences in lifting velocity and blood lactate concentration during resistance exercise using different rest intervals (RIs).Methods: Twenty-two trained men (n = 11) and women (n = 11) completed different RIs resistance exercise sessions (90s (R90), 150s (R150), and 240s (R240)). All sessions consisted of 3 sets with a 10 repetition at 70% of 1-repetition maximum (1RM). The exercise did parallel squats with free weights. The measurement items are lifting velocity (mean velocity) in each repetition and blood lactate concentration after exercise.Results: There was a significant interaction between changes in the average velocity of 10 repetition in each set (AV10rep) and sex in each protocol, indicating that AV10rep during squat exercise has decreased in men but not in women in each protocol (p=0.002 - 0.03). Blood lactate concentration were significantly higher in men than in women, but there was no interaction. Conclusion: Our results showed that changes in lifting velocity within a set was not affected by RIs in both men and women, and changes in AV10rep between sets and blood lactate concentration after exercise were affected by RIs only in men, but not in women. |
