A comparison of power outputs on the Wingate test and on a test using an isokinetic device.

Abstract

Abstract The Wingate test has been used as a major test of muscle power whereas isokinetic devices have been used to determine muscle strength. The aim of this study was to examine the relationships between the 30 s Wingate test and tests using repeated knee extensions/flexions on an isokinetic dynamometer (Akron). Ten females and eight males undertook a 30 s Wingate test, six maximal reciprocal contractions of the knee extensors and flexors on the isokinetic dynamometer, and a 30 s test of repeated maximal reciprocal contractions of the knee extensors and flexors. Five minutes after the 30 s tests a blood sample was taken for lactate determination. Significant correlations were obtained for the peak power output (PPO) between the Wingate test and the isokinetic extension (r=0·86, p <0·01) and flexion. tests (r=0·85, p<0·01). Significant correlations were also obtained for the fatigue index (FT) between the Wingate test and the 30s isokinetic test (r = 0·84, p<0·01). Fatigue index was defined as the decline in PPO over time. Values for PPO were significantly higher (p<0·01) in the Wingate test (789 ± 181·6 W) than the corresponding extension (611·45 ± 222·7 W) and flexion (336·27 ± 182·4 W) values in the isokinetic maximum torque test. Post-exercise blood lactate concentrations were also significantly higher (p<0·01) for the Wingate test (10·02± 1·85 mmoll−1 ) than for the 30s isokinetic test (4·14±1·1·9mmoll−1 ). There was a weak but significant correlation between blood lactate for the Wingate and 30 s isokinetic test (r=0·51, p<0·05). These results suggest that the isokinetic tests used in this study are useful measures of anaerobic power.