Table 2.
Associations between physical activity and mortality, NHANES 1999–2006
| Deaths/person-year | All-cause HR (95% CI) |
p-trend | Deaths/person-year | CVD HR (95% CI) | p-trend | Deaths/person-year | Cancer HR (95% CI) |
p-trend | |
|---|---|---|---|---|---|---|---|---|---|
| Physical activity guidelines1 | |||||||||
| Inactive | 1,748/65,009 | REF | 471/65,009 | REF | 365/65,009 | REF | |||
| Insufficient | 354/29,345 | 0.69 (0.59, 0.82) | 83/29,346 | 0.57 (0.41, 0.80) | 83/29,346 | 0.66 (0.46, 0.95) | |||
| Moderate | 216/17,551 | 0.72 (0.60, 0.87) | 61/17,551 | 0.84 (0.57, 1.25) | 58/17,551 | 0.84 (0.58, 1.22) | |||
| High | 345/38,225 | 0.62 (0.53, 0.73) | <0.001 | 70/38,225 | 0.50 (0.35, 0.71) | 0.004 | 97/38,225 | 0.68 (0.53, 0.89) | 0.007 |
| Physical activity sex-specific tertiles2 | |||||||||
| Inactive | 1,748/65,009 | REF | 471/65,009 | REF | 365/65,009 | REF | |||
| Low | 360/27,427 | 0.72 (0.61, 0.86) | 360/27,427 | 0.61 (0.44, 0.85) | 86/27,427 | 0.71 (0.50, 1.02) | |||
| Moderate | 342/29,026 | 0.72 (0.61, 0.85) | 96/29,026 | 0.77 (0.55, 1.06) | 86/29,026 | 0.79 (0.56, 1.11) | |||
| High | 213/28,668 | 0.55 (0.45, 0.67) | <0.001 | 36/28,668 | 0.38 (0.22, 0.65) | <0.001 | 66/28,668 | 0.60 (0.44, 0.84) | 0.001 |
Cox proportional hazards models were performed with the SAS SURVEYPHREG procedure to estimate odds ratios and 95% confidence intervals, adjusting for: age, sex, race-ethnicity, education, poverty income ratio, smoking, alcohol use, BMI, total intake of energy, calcium and magnesium.
Guideline-based categories: inactive (no reported regular activity), insufficient (>0 to <500 MET-min/week), moderate: (500–1,000 MET-min/week) and high (>1,000 MET-min/week).
Sex-specific tertiles: inactive, low (performing <562 (men) or <371 (women) MET-min/week), moderate (performing 562–1,757 [men] or 371–1,200 [women] MET-min activity/week) and high (performing greater than 1,757 [men] or 1,200 [women] MET-min activity/week).