<qa>  What was the WOMAC used to measure function and pain?The study compared 12 weeks of explosive high-speed power training with traditional slow-speed strength training. Outcome measures included muscle performance: leg press LP and knee extension KE one-repetition maximum 1RM and LP peak power PP, velocity at peak power PPV and force at peak power PPF from 40-90 of the 1RM. Measures of function consisted of the 400-meter walk 400-m W, Berg Balance Scale BBS, timed chair rise TCR and self-reported function and pain using the WOMAC. 