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purpose of this study was to compare three different intervals for
a between sets rest period during a common isokinetic knee extension
strength-testing protocol of twenty older Brazilian men (66.30 ± 3.92
yrs). The volunteers underwent unilateral knee extension (Biodex System
3) testing to determine their individual isokinetic peak torque at
60, 90, and 120°·s-1. The contraction speeds and the rest
periods between sets (30, 60 and 90 s) were randomly performed in
three different days with a minimum rest period of 48 hours. Significant
differences between and within sets were analyzed using a One Way
Analysis of Variance (ANOVA) with repeated measures. Although, at
angular velocity of 60°·s-1 produced a higher peak torque,
there were no significant differences in peak torque among any of
the rest periods. Likewise, there were no significant differences
between mean peak torque among all resting periods (30, 60 and 90s)
at angular velocities of 90 and 120°·s-1. The results showed
that during a common isokinetic strength testing protocol a between
set rest period of at least 30 s is sufficient for recovery before
the next test set in older men.
KEY
WORDS: Aging, muscle strength, muscle fatigue, isokinetic test.
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