Table 1.
Sample Characteristics
| Regular Activity (n = 4,043) | Weekend Warrior Activity (n = 7,925) | Inactive (n = 5,178) | Overall (N = 17,146) | |
|---|---|---|---|---|
| Age at accelerometer, y | 61.02 (7.59) | 61.85 (7.60) | 62.11 (7.67) | 61.73 (7.63) |
| Age at MRI, y | 63.65 (7.73) | 64.27 (7.78) | 64.37 (7.87) | 64.15 (7.80) |
| Male | 2,118 (52.4) | 4,018 (50.7) | 1,823 (35.2) | 7,959 (46.4) |
| Body mass index at enrollment, kg/m2a | 25.58 (3.76) | 25.99 (3.74) | 27.69 (4.82) | 26.41 (4.19) |
| Body mass index at MRI, kg/m2a | 25.29 (3.79) | 25.81 (3.85) | 27.75 (4.99) | 26.27 (4.33) |
| Race | ||||
| Asian | 40 (1.0) | 82 (1.0) | 71 (1.4) | 193 (1.1) |
| Black | 13 (0.3) | 33 (0.4) | 47 (0.9) | 93 (0.5) |
| Other | 47 (1.2) | 51 (0.6) | 43 (0.8) | 141 (0.8) |
| White | 3,943 (97.5) | 7,759 (97.9) | 5,017 (96.9) | 16,719 (97.5) |
| Tobacco use | ||||
| Current | 193 (4.8) | 330 (4.2) | 340 (6.6) | 863 (5.0) |
| Former | 1,377 (34.1) | 2,641 (33.3) | 1,792 (34.6) | 5,810 (33.9) |
| Never | 2,473 (61.2) | 4,954 (62.5) | 3,046 (58.8) | 10,473 (61.1) |
| Unemployed/retired | 1,319 (32.6) | 2,948 (37.2) | 1,965 (37.9) | 6,232 (36.3) |
| Alcohol intake, g/wk | 132.20 (131.08) | 130.91 (128.97) | 108.79 (125.14) | 124.53 (128.74) |
| Townsend Deprivation Index | −1.59 (2.85) | −2.05 (2.65) | −1.96 (2.68) | −1.92 (2.71) |
| Self-reported health | ||||
| Excellent | 1,211 (30.0) | 2,181 (27.5) | 935 (18.1) | 4,327 (25.2) |
| Fair | 416 (10.3) | 822 (10.4) | 937 (18.1) | 2,175 (12.7) |
| Good | 2,369 (58.6) | 4,825 (60.9) | 3,157 (61.0) | 10,351 (60.4) |
| Poor | 47 (1.2) | 97 (1.2) | 149 (2.9) | 293 (1.7) |
| Diet quality | ||||
| Good | 804 (19.9) | 1,443 (18.2) | 797 (15.4) | 3,044 (17.8) |
| Intermediate | 2,058 (50.9) | 3,912 (49.4) | 2,539 (49.0) | 8,509 (49.6) |
| Poor | 1,181 (29.2) | 2,570 (32.4) | 1,842 (35.6) | 5,593 (32.6) |
| Educational attainment, y | 16.39 (4.40) | 16.19 (4.42) | 15.03 (4.60) | 15.89 (4.51) |
| Diabetes mellitus | 98 (2.4) | 173 (2.2) | 276 (5.3) | 547 (3.2) |
| Heart failure | 21 (0.5) | 34 (0.4) | 35 (0.7) | 90 (0.5) |
| Atrial fibrillation | 89 (2.2) | 197 (2.5) | 160 (3.1) | 446 (2.6) |
| Myocardial infarction | 68 (1.7) | 159 (2.0) | 131 (2.5) | 358 (2.1) |
| Stroke | 43 (1.1) | 97 (1.2) | 79 (1.5) | 219 (1.3) |
| Total weekly MVPA, min | 501 (268) | 363 (192) | 77 (44) | 309 (246) |
Baseline characteristics are presented as the mean ± SD or count (N [percentage]).
MRI = magnetic resonance imaging; MVPA = moderate-to-vigorous physical activity.
a
Excludes missing body mass index in n = 22 (enrollment) and n = 587 (MRI).