The purpose of this study was to establish the reliability and validity of the Power Master isokinetic ergometer in measuring skating power for 34 hockey players (14 professional, 11 recreational, and 9 female university players). Comparisons between two on-ice tests and four laboratory tests of skating speed and power, and prediction of sprint skating speed were also examined for 19 hockey players (10 recreational and 9 female university players). The Power Master displayed internal consistency reliability, construct validity, and criterion related validity. Significant correlations occurred between the on-ice tests and the laboratory test (r =.55 to r =.95), and the Power Master was a significant variable in predicting sprint skating speed. It was concluded that the Power Master is a reliable and valid machine for the measurement of skating power in hockey players.

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