Table 1. Participant Characteristics by Time Spent Weight Lifting / Strength Training, Women's Health Study.
| Minutes per Week of Weight Lifting / Strength Training | |||||
|---|---|---|---|---|---|
| None | 1 to <20 min | 20 to <60 min | 60 to <120 min | ≥120 min | |
| Characteristic | (n = 29 012) | (n = 1829) | (n = 1715) | (n = 2044) | (n = 1154) |
| Age, mean (SD), y | 62.8 (7.0) | 61.8 (6.6) | 61.6 (6.3) | 61.5 (6.3) | 61.6 (6.3) |
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| BMI, mean (SD), kg/m2 | 27.4 (5.6) | 25.9 (4.9) | 25.4 (4.3) | 25.5 (4.5) | 25.2 (4.5) |
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| Postmenopausal, No. (%) | 26 390 (91.0) | 1656 (90.5) | 1549 (90.3) | 1827 (89.4) | 1039 (90.0) |
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| Current hormone replacement therapy, No. (%) | 14 397 (49.6) | 963 (52.7) | 940 (54.8) | 1110 (54.3) | 628 (54.4) |
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| Current smoking, No. (%) | 2696 (9.3) | 80 (4.4) | 63 (3.7) | 89 (4.4) | 47 (4.1) |
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| Parental history of MI, No. (%) | 4131 (14.5) | 251 (13.9) | 232 (13.7) | 282 (14.0) | 173 (15.3) |
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| Alcohol, never drinkers, No. (%) | 13 100 (45.2) | 677 (37.0) | 557 (32.5) | 640 (31.3) | 375 (32.5) |
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| Alcohol, among drinkers, mean (SD), g/d | 7.5 (10.1) | 7.4 (9.2) | 7.4 (8.6) | 7.8 (9.3) | 8 (9.4) |
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| Total calories, mean (SD), kcal/d | 1724.8 (534.5) | 1768.0 (523.4) | 1758.5 (490.2) | 1739.3 (515.1) | 1735.7 (536.1) |
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| Saturated fat, mean (SD), g/d | 20.0 (8.2) | 19.5 (7.7) | 18.9 (7.2) | 18.3 (7.5) | 17.8 (7.7) |
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| Fiber, mean (SD), g/d | 18.6 (8.0) | 20.1 (8.2) | 20.2 (7.9) | 20.9 (8.7) | 21.4 (9.4) |
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| Fruits and vegetables, mean (SD), servings/d | 6.0 (3.5) | 6.3 (3.7) | 6.5 (3.3) | 6.9 (3.4) | 7.2 (4.0) |
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| Hypertension, No. (%) | 14 218 (49.0) | 700 (38.3) | 618 (36.0) | 789 (38.6) | 416 (36.1) |
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| High Cholesterol, No. (%) | 15 476 (53.3) | 901 (49.3) | 801 (46.7) | 963 (47.1) | 530 (45.9) |
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| Physical Activity, median (IQR), minutes per week | |||||
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| Weight lifting / strength training | 0 (0, 0) | 10 (10, 10) | 40 (40, 40) | 60 (60, 90) | 150 (150, 300) |
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| Aerobic activities | 102 (32, 300) | 142 (57, 272) | 192 (102, 322) | 272 (154, 429) | 367 (214, 572) |
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| Lower intensity activities | 0 (0, 0) | 10 (0, 40) | 10 (0, 40) | 40 (0, 60) | 40 (0, 150) |
Abbreviations: SD, standard deviation; BMI, body mass index; IQR, interquartile range.