Baseline characteristics of study participants, the Alberta physical activity and breast cancer prevention trial, 2003–2007, n=320
| Baseline characteristic | Exercisers (n=160) | Controls (n=160) |
|---|---|---|
| Mean±SD | Mean±SD | |
| Age (years) | 61.2±5.4 | 60.6±5.7 |
| Body composition measurements | ||
| BMI (kg/m2) | 29.1±4.5 | 29.2±4.3 |
| Intra-abdominal fat area (cm2) | 101.4±55.4 | 103.2±56.0 |
| Total body fat (kg) | 30.9±8.2 | 31.3±8.6 |
| Per cent body fat | 42.2±4.9 | 42.4±5.7 |
| Total energy intake (kcal/day) | 1551.2±598.7 | 1527.3±535.0 |
| Past year total physical activity (MET -hours/week) | ||
| Total physical activity | 114.2±57.6 | 129.1±77.9 |
| Occupational activity | 50.4±49.1 | 52.2±57.9 |
| Household activity | 52.9±34.3 | 63.9±53.5 |
| Recreation activity | 10.2±11.8 | 12.1±13.6 |
| Maximal oxygen consumption (mL/kg/min) | 27.1±6.2 | 26.8±6.0 |
| Median (IQR) | Median (IQR) | |
| SOD | 12.6 (11.1–14.1) | 12.5 (11.3–13.8) |
| CAT | 21.0 (13.6–30.9) | 19.8 (13.0–29.0) |
| 8-iso-PGF2α | 246 (206–293) | 258 (201–295) |
| 8-OHdG | 7.3 (6.2–8.0) | 7.2 (6.4–7.9) |
BMI, body mass index; 8-OHdg, 8-hydroxy-2′-deoxyguanosine; CAT, catalase; 8-iso-PGF2α, 8-isoprostaglandin F2α; MET, metabolic equivalent; SOD, superoxide dismutase.