Rozier C K, Schafer D S
Int J Rehabil Res. 1981;4(3):345-51.
Isokinetic exercise programs were compared as to the number of times per week subjects performed the exercise. Isokinetic exercise of the right knee extensors was performed on 23 female subjects between the ages of 18 and 24 who had no history or evidence of knee pathology. Pre- and post-tests included maximum isometric and isokinetic torque measurements of both the right and left knee extensors. Weekly strength testing was also done. One group performed the isokinetic exercise (3 sets, 8 repetitions per set at 10 rpm) daily for five days; one group performed the same isokinetic exercise protocol every other day, three times per week. The experimental period lasted six consecutive weeks. Strength gains of the exercised leg were significant in both groups but no significant differences in strength gains were found between the two groups after a period of six weeks of exercise, supporting the rationale for offering exercise programs three times weekly. In addition, strength gain curves were plotted weekly for the six week period. The average strength gain curves for both exercise groups as tested isometrically or isokinetically showed a decrease in strength between the second and the third week, which was not statistically significant but which was consistent in all subjects.
对等速运动项目进行了比较，比较的内容是受试者每周进行该运动的次数。对23名年龄在18至24岁之间、无膝关节病变病史或证据的女性受试者进行了右膝伸肌的等速运动。测试前和测试后包括对左右膝伸肌进行最大等长和等速扭矩测量。每周也进行力量测试。一组每天进行等速运动（3组，每组以10转/分钟的速度重复8次），共五天；一组每隔一天进行相同的等速运动方案，每周三次。实验期持续六周。两组中锻炼腿的力量均有显著增加，但经过六周的运动后，两组之间在力量增加方面未发现显著差异，这支持了每周提供三次运动方案的理论依据。此外，绘制了六周期间每周的力量增加曲线。两个运动组通过等长或等速测试的平均力量增加曲线显示，在第二周和第三周之间力量有所下降，这在统计学上不显著，但在所有受试者中是一致的。
