TABLE 1—
Baseline Participant Characteristics Among 805 Healthy US Seniors: 1989–2002
| Normal Weighta | Overweightb | |||
| Physically Activec (n = 442) | Physically Inactived (n = 123) | Physically Activec (n = 153) | Physically Inactived (n = 87) | |
| White, % | 96 | 95 | 98 | 98 |
| Men, % | 74 | 53* | 83 | 67* |
| Age, y, mean (SE) | 64.8 (0.3) | 66.6 (0.6)* | 65.1 (0.5) | 66.0 (0.7) |
| Education, y, mean (SE) | 16.6 (0.1) | 16.5 (0.2) | 16.8 (0.2) | 16.1 (0.3) |
| Follow-up, y, mean (SE) | 11.5 (0.2) | 10.9 (0.4) | 11.2 (0.3) | 10.7 (0.5) |
| Comorbid conditions, no. (SE) | 0.07 (0.01) | 0.15 (0.02) | 0.09 (0.02) | 0.14 (0.04) |
| Smokers, % | 7 | 2* | 9 | 3* |
| Global health scoree, mean (SE) | 84.2 (0.6) | 73.6 (1.7)* | 79.9 (1.2) | 74.2 (1.4)* |
| HAQ-DI scoref, mean (SE) | 0.07 (0.01) | 0.16 (0.02)* | 0.12 (0.02) | 0.17 (0.03) |
| Exercise, min/wk, mean (SE) | 302.7 (9.8) | 15.7 (2.1)* | 251.0 (14.2) | 12.3 (2.4)* |
| BMI, kg/m2, mean (SE) | 22.2 (0.8) | 22.3 (0.2) | 27.1 (0.2) | 28.3 (0.3)* |
Note. HAQ-DI = Stanford Health Assessment Questionnaire Disability Index; BMI = body mass index.
aDefined as a BMI of < 25 kg/m2.
bDefined as a BMI of ≥ 25 kg/m2.
cDefined as vigorous exercise for more than 60 minutes per week.
dDefined as vigorous exercise for 60 minutes or less per week.
eMeasured 0 to 100; 100 = very healthy.
fMeasured 0 to 3; 0 = no difficulty, 3 = unable to do.
* P < .05, between the active and inactive categories within weight group.