Department of Athletic Training, Indiana State University , Terre Haute, Indiana, USA.
Department of Health and Sport Science, School of Education and Allied Professions, University of Dayton , Dayton, Ohio, USA.
J Sports Sci Med. 2005 Sep 1;4(3):263-71.
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 PointsMuscle fiber cross sectional area (CSAf ) decreased 38% following spinal cord injury (SCI).Early intervention with functional electric stimulation cycle ergometry (FES-CE) prevented further loss of CSAf in SCI patients and increased power output.Muscle myosin heavy chain (MHC) and myonuclear density were unaffected by SCI or FES-CE.
本研究的目的是比较三种不同的组间休息时间间隔，在 20 名巴西老年男性（66.30 ± 3.92 岁）的常见等速膝关节伸展力量测试方案中。志愿者进行了单侧膝关节伸展（Biodex 系统 3）测试，以确定他们在 60、90 和 120°·s-1 时的个体等速峰值扭矩。收缩速度和组间休息时间（30、60 和 90 秒）在三天内随机进行，最小休息时间为 48 小时。使用重复测量的单向方差分析（ANOVA）分析组间和组内的差异。虽然在角速度为 60°·s-1 时产生的峰值扭矩较高，但在任何休息时间间隔之间都没有显著差异。同样，在角速度为 90 和 120°·s-1 时，所有休息时间（30、60 和 90 秒）的平均峰值扭矩之间也没有显著差异。结果表明，在常见的等速力量测试方案中，在下一组测试之前，至少 30 秒的组间休息时间足以恢复。关键点：脊髓损伤（SCI）后肌肉纤维横截面积（CSAf）减少 38%。早期采用功能性电刺激循环测力计（FES-CE）干预可防止 SCI 患者 CSAf 的进一步丧失，并提高功率输出。肌肉肌球蛋白重链（MHC）和肌核密度不受 SCI 或 FES-CE 的影响。
