Table 1. Means (± standard deviation) for variables. Variables FWB 20S 40S F-value p Power Cycle Length (m) 2.76 (.09) 2.88 (.10) 2.97 (.15) 32.86 <.0001 1.000 Cycle Frequency (Hz) 1.40 (.04) 1.34 (.05) 1.30 (.07) 36.11 <.0001 1.000 Contact Time (s) .25 (.01) .24 (.02) .24 (.01) 4.57 .0248 .701 Hip Angle Range (deg) 58.7 (4.7) 53.1 (5.3) 49.3 (4.3) 19.62 <.0001 1.000 Knee Angle Range (deg) 106.5 (7.2) 108.3 (9.3) 107.2 (9.8) .961 .4012 .185 Ankle Angle Range(deg) 48.6 (9.1) 45.8 (6.1) 44.5 (6.2) 4.215 .0315 .662 COM vertical displacement (m) .12 (.01) .10 (.01) .09 (.01) 71.74 <.0001 1.000