| lthough numerous studies exist in the literature examining velocity specificity with isokinetic strength training, the findings are diverse with respect to populations sampled, instruments used, parameters measured, methodological designs employed, and results obtained. The purpose of this study was to perform a quantitative analysis of selected studies to examine the effects of velocity-specific isokinetic strength training on isokinetic measurements of muscle performance. This study analyzed a sample of 27 studies published as either journal articles or graduate theses/dissertations between the years 1970 and 1994. Each study was read, coded, and effect sizes were calculated. Too few effect sizes existed for other than concentric training of the knee extensors to examine quantitatively. Training and testing velocities were grouped according to previously cited literature: slow (1-100 degrees/second), intermediate (101-200 degrees/sec), and fast (201-300 degrees/second). For concentric training of the knee extensors, positive effect sizes were demonstrated across all testing velocities regardless of training, indicating an increase in strength measurements for all three training groups at all three testing speeds. Mean effect sizes were twice as large at the speed trained compared to the opposite end of the tested velocity spectrum for both fast and slow speed concentric training; however, one way analyses of variance (ANOVA) showed no statistically significant differences between the three tested velocities for slow (F = 2 43,... |
