Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine ( 2005 ) 04 , 285 - 290

Research article
The Effects of Rest Interval on Quadriceps Torque During an Isokinetic Testing Protocol in Elderly
Martim Bottaro1, , André Faria Russo2, Ricardo Jacó de Oliveira2
Author Information
1 College of Physical Education, University of Brasilia,, Brazil
2 Graduate School of Physical Education Catholic University of Brasilia, Brazil

Martim Bottaro
✉ SQSW 105 Bloco-B Apt. 108, Brasília, DF, Brazil.
Email: martim@unb.br
Publish Date
Received: 13-04-2005
Accepted: 15-06-2005
Published (online): 01-09-2005
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ABSTRACT

The 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


           Key Points
  • The assessment of muscular strength using isokinetics muscle contraction in older individuals is very important for exercise prescription and rehabilitation.
  • The minimal time between intraset isokinetics knee extension assessment in older individuals need to be more investigated, however 30 s appear to besufficient time for strength recover.
 
 


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