Table 3 Performance-based and self- report measures of 21 subjects randomized to a postoperative exercise intervention or usual care following primary total hip arthroplasty 6 weeks postoperatively (Pre-intervention) and 4 and 12 months postoperatively (Post-intervention)
6-weeks postoperative | 4-months postoperative | 12-months postoperative | |||||
|---|---|---|---|---|---|---|---|
Pre-intervention | Post-intervention | Post-intervention | |||||
Intervention | Control | Intervention | Control | Intervention | Control | P-value for group effect* | |
(n = 11) | (n = 10) | (n = 11) | (n = 10) | (n = 11) | (n = 10) | ||
Performance-based measures | |||||||
Mean 6-minute walk test in meters (SD) | 331.0 (6.4) | 287.1 (84.8) | 450.6 (61.4) | 435.8 (99.2) | 500.6 (99.6) | 495.6 (75.6) | 0.92 |
Gait measures** | |||||||
Mean velocity (SD) | 0.55 (0.17) | 0.46 (0.13) | 0.72 (0.09) | 0.77 (0.19) | 0.75 (0.11) | 0.84 (0.14) | 0.96 |
Mean cadence (SD) | 0.73 (0.15) | 0.70 (0.10) | 0.86 (0.08) | 0.93 (0.11) | 0.88 (0.08) | 0.93 (0.08) | 0.91 |
Mean stride length (SD) | 0.74 (0.10) | 0.64 (0.13) | 0.83 (0.07) | 0.83 (0.15) | 0.85(0.08) | 0.90 (0.11) | 0.80 |
Mean stride width (SD) | 1.2 (0.63) | 1.3 (0.29) | 1.1 (0.44) | 1.1 (0.45) | 1.2 (0.38) | 1.2 (0.22) | 0.90 |
Self-report measures | |||||||
WOMAC† | |||||||
Mean pain score (SD) | 77.3 (17.8) | 80.6 (15.7) | 86.4 (14.2) | 82.2 (10.0) | 91.7 (13.2) | 87.0 (18.9) | 0.65 |
Mean function score (SD) | 71.8 (12.8) | 70.4 (17.6) | 82.4 (13.5) | 81.2 (1.7) | 90.8 (12.7) | 85.6 (15.6) | 0.98 |
RAND-36† | |||||||
Mean physical function Score (SD) | 42.7 (19.8) | 33.5 (18.7) | 67.1 (17.1) | 64.4 (18.6) | 82.8 (10.3) | 73.3 (19.6) | 0.48 |
Mean physical role score (SD) | 15.9 (35.8) | 13.9 (33.3) | 63.6 (45.2) | 66.7 (50.0) | 22.9 (25.3) | 75.0 (40.8) | 0.78 |
Mean bodily pain score (SD) | 49.5 (9.5) | 41.0 (27.0) | 71.5 (24.3) | 56.8 (25.1) | 82.3 (21.4) | 73.4 (27.7) | 0.31 |
Mean general health score (SD) | 73.9 (21.7) | 69.9 (23.1) | 75.5 (5.9) | 78.8 (17.2) | 83.4 (12.1) | 69.9 (16.7) | 0.70 |
Mean vitality score (SD) | 48.6 (15.2) | 53.3 (18.9) | 68.6 (19.5) | 63.9 (19.3) | 75.9 (15.5) | 69.5 (24.3) | 0.95 |
Mean emotional role score (SD) | 36.4 (45.8) | 59.3 (49.4) | 93.9 (20.1) | 77.8 (37.3) | 88.9 (33.3) | 80.0 (35.8) | 0.63 |
Mean social function score (SD) | 44.3 (25.2) | 56.9 (36.5) | 77.3 (23.6) | 69.4 (27.3) | 91.7 (16.5) | 76.3 (24.6) | 1.00 |
Mean mental health score (SD) | 70.5 (15.2) | 80.4 (19.8) | 86.5 (10.2) | 84.9 (14.5) | 84.0 (10.4) | 80.7 (20.1) | 0.38 |