Baseline characteristics* of randomized participants
| Exercisers | Controls | |
|---|---|---|
| n | 87 | 86 |
| Age (y), mean ± SD | 60.7 ± 6.7 | 60.6 ± 6.8 |
| BMI (kg/m2), mean ± SD | 30.4 ± 4.1 | 30.5 ± 3.7 |
| Percentage body fat (dual energy X-ray absorptiometry), mean ± SD | 47.4 ± 4.8 | 47.3 ± 4.6 |
| VO2 max (mL/kg/min), mean ± SD | 20.0 ± 3.5 | 20.4 ± 3.0 |
| Alcohol (g/d), mean ± SD | 4.03 ± 8.4 | 4.62 ± 7.2 |
| Total calories (kcal/d), mean ± SD | 1635 ± 792.2 | 1722 ± 671.8 |
| Full-time employment, n (%) | 25 (29) | 25 (29) |
| Education, n (%) | ||
| High school graduate | 10 (12) | 9 (10) |
| Some college | 36 (41) | 35 (41) |
| College graduate | 5 (6) | 10 (12) |
| Graduate degree | 36 (41) | 32 (37) |
| Ethnicity, n (%) | ||
| Non-Hispanic White | 74 (86) | 75 (87) |
| African American | 4 (5) | 3 (4) |
| Asian/Pacific Islander | 6 (7) | 3 (4) |
| Hispanic/Latino | 0 (0) | 2 (2) |
| American Indian | 0 (0) | 2 (2) |
| Other | 2 (2) | 1 (1) |
| Family history of breast cancer, n (%) | ||
| None | 59 (68) | 58 (67) |
| First degree | 14 (16) | 16 (19) |
| Second degree | 13 (15) | 11 (13) |
| Ever used hormone therapy, n (%) | 35 (48) | 38 (52) |
| History of hysterectomy, n (%) | 13 (14.9) | 18 (20.9) |
↵* There were no statistically significant differences at baseline between intervention and control participants for these variables.