Table 3.
Risk of all-cause mortality associated with a 30-minute/day increment in physical activity in the overall cohort and in cohort subgroups.
| Cohort group | Total PA RR (95% CI)a |
Light PA RR (95% CI) a |
MVPA RR (95% CI) a |
|---|---|---|---|
| Overall (N=6,382; 450 deaths) | 0.88 (0.85, 0.92) | 0.88 (0.85, 0.92) b0.93 (0.89, 0.97) | 0.61 (0.54, 0.71) b 0.67 (0.58, 0.78) |
|
| |||
| Age, yr | |||
| <80 (N=3,211; 90 deaths) | 0.91 (0.85, 0.98) | 0.93 (0.84, 1.01) b 0.98 (0.89, 1.08) | 0.68 (0.52, 0.88) b 0.69 (0.53, 0.92) |
|
| |||
| ≥80 (N=3,171; 360 deaths) | 0.87 (0.84, 0.91) | 0.88 (0.84, 0.92) b 0.92 (0.87, 0.96) | 0.60 (0.51, 0.71) b 0.67 (0.56, 0.79) |
|
|
|||
| ‡Interaction, p-value | .67 | .74 | .73 |
|
| |||
| Race-ethnicity | |||
| White (N=3,150; 320 deaths) | 0.89 (0.85, 0.93) | 0.89 (0.86, 0.94) b 0.94 (0.89, 0.99) | 0.60 (0.51, 0.71) b 0.64 (0.54, 0.76) |
|
| |||
| Black (N=2,151; 96 deaths) | 0.85 (0.79, 0.92) | 0.85 (0.77, 0.92) b 0.90 (0.82, 0.99) | 0.53 (0.38, 0.74) b 0.63 (0.45, 0.91) |
|
| |||
| Hispanic (N=1,081; 34 deaths) | 0.91 (0.81, 1.03) | 0.89 (0.77, 1.04) b 0.90 (0.77, 1.05) | 0.88 (0.62, 1.24) b 0.96 (0.67, 1.37) |
|
|
|||
| ‡Interaction, p-value | .32 | .14 | .38 |
|
| |||
| BMI, kg/m2 | |||
| <30 (N=4,492; 336 deaths) | 0.87 (0.83, 0.91) | 0.87 (0.83, 0.92) b 0.91 (0.87, 0.96) | 0.62 (0.54, 0.73) b 0.69 (0.59, 0.81) |
|
| |||
| ≥30 (N=1,890; 114 deaths) | 0.88 (0.81, 0.95) | 0.89 (0.81, 0.97) b 0.94 (0.86, 1.03) | 0.53 (0.38, 0.75) b 0.58 (0.41, 0.82) |
|
|
|||
| ‡Interaction, p-value | .86 | .64 | .29 |
|
| |||
| SPPB score (N=5479, 384 deaths) | |||
| ≤8 (N=2,792; 279 deaths) | 0.88 (0.84, 0.92) | 0.89 (0.84, 0.94) b 0.94 (0.89, 0.99) | 0.56 (0.46, 0.69) b 0.61 (0.49, 0.75) |
|
| |||
| >8 (N=2,687; 105 deaths) | 0.92 (0.85, 0.98) | 0.92 (0.85, 1.01) b 0.95 (0.87, 1.03) | 0.77 (0.61, 0.96) b 0.79 (0.63, 1.00) |
|
|
|||
| ‡Interaction, p-value | .10 | .16 | .009 |
RR, relative risk; CI, confidence interval; BMI, body mass index; SPPB, short physical performance battery.
Light PA is the combined minutes/day in low light PA and high light PA.
a
Adjusted for awake accelerometer wear-time, age, race-ethnicity, education, smoking, alcohol, age at menopause, number of comorbid conditions, and self-assessed general health status as defined in Table 2 footnote.
b
Light PA and MVPA are mutually adjusted for one another.