Table 2. Kinematic and kinetic results for FFS and RFS trials performed by both Preferred Forefoot Group (PFFG) and Preferred Rearfoot Group (PRFG). Data are means (±SD).
Performing FFS Performing RFS
PFFG
(n = 10)
PRFG
(n = 11)
Total FFS
(n = 21)
PFFG
(n = 10)
PRFG
(n = 11)
Total RFS
(n = 21)
Velocity (m·s-1) 3.39 (.47) 3.29 (.44) 3.34 (.44) 3.28 (.39) 3.26 (.42) 3.27 (.40)
Peak VGRF (BW) 2.76 (.24) 2.67 (.23) 2.71 (.23) 2.59 (.22) 2.56 (.21) 2.58 (.21)
Early-stance (0-20%) Ankle Mom (Nm·kg-1) .01 (.01) .01 (.01) .01 (.01) .21 (.11) .26 (.11) .23 (.11)
Mid-late Stance Ankle Mom (Nm·kg-1) -3.01 (.31) -3.18 (.32) -3.09 (.32) -2.53 (.30) -2.68 (.31) -2.61 (.31)
Dorsiflexion ROM (°) 20.9 (5.5) 23.2 (4.7) 22.1 (5.1) 16.9 (3.1) 18.3 (4.3) 17.6 (3.8)
Peak Knee Mom (Nm/kg) 2.41 (.75) 2.38 (.49) 2.39 (.61) 2.57 (.66) 2.64 (.44) 2.61 (.54)
Knee ROM (°) 28.9 (3.1) 30.1 (2.9) 29.6 (3.0) 31.0 (3.2) 32.3 (2.4) 31.7 (2.8)
Knee ROM—Absorption (°) 25.8 (2.9) 28.1 (4.6) 27.1 (4.0) 28.9 (3.3) 31.5 (2.2) 30.3 (3.0)
Knee ROM—Pushoff (°) 27.0 (4.6) 28.4 (3.1) 27.8 (3.8) 27.6 (4.8) 29.2 (3.5) 28.5 (4.1)
Peak Hip Mom (Nm·kg-1) -2.19 (.72) -2.15 (.41) -2.17 (.56) -2.08 (.49) -2.27 (.40) -2.18 (.44)
Hip ROM (°) 40.0 (3.5) 42.6 (2.7) 41.4 (3.3) 40.9 (3.7) 44.4 (3.7) 42.7 (4.0)
Mom: Moment.
† Significant main effect (p < 0.05) for within subjects comparing FFS to RFS conditions. All moments are calculated as external moments. At the ankle joint, positive moments are external dorsiflexion moments. At the knee joint, positive moments are external flexion moments. At the hip joint, negative moments are external flexion moments. No significant interactions, therefore there were no between subjects effects (FFG vs. RFG).