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Changes in physical fitness measures.
| Measure | Baseline, mean (SD) | 6 weeks, mean (SD) | 12 weeks, mean (SD) | Baseline vs 6 weeks, P value | 6 weeks vs 12 weeks, P value | Baseline vs 12 weeks, P value |
| Grip strength (kg) | 39.35 (9.98) | 39.98 (9.69) | 41.10 (10.52) | .69 | .31 | .02 |
| 30-second chair stand test (seconds) | 18.10 (3.29) | 20.55 (3.03) | 23.26 (3.79) | <.001 | <.001 | <.001 |
| 6-minute walk test (meters) | 572.90 (49.15) | 591.19 (49.61) | 604.07 (51.59) | <.001 | .01 | <.001 |
