The new 7SKF equation improved on SKF equations developed using densitometry. The final equation based on the whole sample was %BF' = 10.566 + 0.12077*(7SKF) - 8.057*(gender) - 2.545*(race). Moreover, a 3SKF equation was comparable in accuracy to the 7SKF equation: BF' = 8.997 + 0.24658*(3SKF) - 6.343*(gender) - 1.998*(race).

The purpose of this study was to investigate the presence of a practice effect on the Wingate anaerobic test (WAnT). Twenty-five young adult men (mean age = 20 years) performed 2 trials of the WAnT, which were separated by 7 days. Mean peak power (PP) and mean power (MP) for trials I and II were compared using a 1-way repeated measures analysis of variance to determine if a practice effect existed. Mean PP and MP scores were significantly higher (p < 0.025) on trial II (867.64 and 634.68 W for PP and MP, respectively) than on trial I (764.48 and 604.92 W), indicating that a practice effect occurred. Effect size (Cohen's d) for PP and MP was 0.72 and 0.35, indicating a large effect and small effect, respectively. Therefore, at least 1 full administration should be performed prior to a baseline power output measurement.