| Experimental group (N=39) | Control group (N=41) | |||
---|---|---|---|---|---|
 |  | Baseline | Six weeks post-intervention | Baseline | Six weeks post-intervention |
Participation in stretching or strengthening exercises | None | 25 | 3 | 23 | 19 |
 | Less than 30 minutes/ week | 7 | 19 | 9 | 14 |
 | 30-60 minutes/ week | 5 | 11 | 4 | 5 |
 | 1-3 hours/ week | 1 | 6 | 4 | 2 |
 | More than 3 hours/ week | 1 | 3 | 1 | 1 |
Participation in walking for exercise | None | 13 | 2 | 11 | 7 |
 | Less than 30 minutes/ week | 12 | 9 | 11 | 15 |
 | 30-60 minutes/ week | 9 | 15 | 8 | 9 |
 | 1-3 hours/ week | 2 | 9 | 4 | 4 |
 | More than 3 hours/ week | 3 | 4 | 7 | 6 |
Participation in swimming for exercise | None | 34 | 31 | 33 | 35 |
 | Less than 30 minutes/ week | 1 | 6 | 4 | 2 |
 | 30-60 minutes/ week | 2 | 2 | 3 | 1 |
 | 1-3 hours/ week | 1 | 0 | 1 | 1 |
 | More than 3 hours/ week | 1 | 0 | 0 | 2 |
Participation in cycling for exercise | None | 39 | 32 | 37 | 35 |
 | Less than 30 minutes/ week | 0 | 4 | 2 | 1 |
 | 30-60 minutes/ week | 0 | 2 | 1 | 3 |
 | 1-3 hours/ week | 0 | 1 | 1 | 0 |
 | More than 3 hours/ week | 0 | 0 | 0 | 2 |
Participation in other aerobic exercise | None | 35 | 23 | 36 | 34 |
 | Less than 30 minutes/ week | 3 | 6 | 1 | 2 |
 | 30-60 minutes/ week | 1 | 6 | 2 | 2 |
 | 1-3 hours/ week | 0 | 3 | 2 | 1 |
 | More than 3 hours/ week | 0 | 1 | 0 | 2 |