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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Clin Biomech (Bristol). 2015 Feb 17;30(4):383–390. doi: 10.1016/j.clinbiomech.2015.02.008

Table 2.

Mean (SD) of patellofemoral joint (PFJ) loading during Free- and Fast-Walk conditions for the control and patellofemoral join osteoarthritis (PFJ OA) groups.

Free-Walk Fast-Walk P value*
Partial Eta2†
Control PFJ OA Control PFJ OA
Knee flexion moment 1st peak (Nm/kg×m) 0.35 (0.13) 0.32 (0.14) 0.51 (0.18) 0.49 (0.16) 0.71
0.02
Knee flexion moment impulse 1st half (Nm-ms/kg×m) 42.0 (19.8) 36.2 (15.9) 55.3 (25.0) 49.2 (19.3) 0.34
0.01
PFJ stress 1st peak (MPa) 2.98 (1.46) 2.79 (1.20) 4.36 (2.24) 4.20 (1.55) 0.80
0.01
Knee flexion moment 2nd peak (Nm/kg×m) 0.12 (0.05) 0.16 (0.06) 0.15 (0.07) 0.20 (0.08) 0.03
0.07
Knee flexion moment impulse 2nd half (Nm-ms/kg×m) 7.8 (5.7) 11.9 (7.6) 8.8 (7.2) 13.8 (10.4) 0.03
0.07
PFJ stress 2nd peak (MPa) 1.01 (0.46) 1.33 (0.57) 1.22 (0.62) 1.67 (0.75) 0.01
0.10
*

Between-subject (control vs. PFJ OA) effect revealed by 2-by-2 (group-by-condition) mixed-model analysis of variance (ANOVA) with a covariate of gender. Bold numbers indicates significant group differences (P value < .05).

†

Partial Eta2 is computed as the sums of squares of the group effect divided by sums of squares of the error and group effect