Table 2.
Comparison of maximum knee joint loads (mean ± 95% CI) by weight loss group at 18 month follow-up, after adjusting for age, gender, walk speed, ADAPT intervention and baseline value
| Variable | Weight Loss | Baseline | Adjusted 18 month | P-value Overall (High vs No) | Δ | % Δ |
|---|---|---|---|---|---|---|
| AP shear force (N) | High | 461 (377;545) | 585 (481;689) | 0.61 (0.44) | 107.8 | 23.4 |
| Low | 453 (373;533) | 514 (404;625) | 37.5 | 8.3 | ||
| No | 512 (464;559) | 529 (429;630) | 52.4 | 10.2 | ||
| Compressive force (N) | High | 2852 (2433;3271) | 2843 (2573;3114) | 0.05 (0.01) | −75.2 | −2.6 |
| Low | 2908 (2628;3188) | 3049 (2755;3342) | 130.1 | 4.5 | ||
| No | 2969 (2678;3261) | 3310 (3050;3570) | 391.3 | 13.2 | ||
| Abduction moment (N·Em) | High | 38 (32;44) | 34 (28;40) | 0.65 (0.44) | −2.8 | −7.4 |
| Low | 37 (30;45) | 37 (31;43) | 0.7 | 1.9 | ||
| No | 34 (29;40) | 37 (31;49) | 0.2 | 0.6 | ||
| Extension Moment (N·m) | High | 33 (21;46) | 34 (25;43) | 0.21 (0.72) | −0.9 | −2.7 |
| Low | 41 (24;58) | 23 (13;33) | −12.4 | −30.3 | ||
| No | 32 (25;39) | 32 (23;40) | −3.3 | −10.4 | ||
| Vertical Ground Reaction Force (N) | High | 976 (860;1092) | 892 (830;953) | 0.003 (0.001) | −135.7 | −13.9 |
| Low | 1118 (721;1514) | 949 (886;1012) | −78.6 | −7.0 | ||
| No | 993 (945;1041) | 1036 (983;1089) | 8.2 | 0.8 |
Weight Loss: High = −27% to −5.1 %, Low = −5% to 0.01%, None = 0% to 7.5%Δ = mean at month 18 – mean at baseline, % Δ =Δ/mean at baseline