Table 2.
HR and 95%CI of hypertension associated with the volume and intensity of PA and long-term exposure to PM2.5.
| HR (95%CI)a | |
|---|---|
| PA volume (MET-h/day) | |
| Quartile 1 (≤18.0) | 1.00 |
| Quartile 2 (>18.0–32.0) | 1.01 (0.96–1.06) |
| Quartile 3 (>32.0–54.5) | 0.87 (0.82–0.92) |
| Quartile 4 (>54.5) | 0.82 (0.77–0.87) |
| Average PA intensity (MET) | |
| Light (1.6–<3.0) | 1.00 |
| Moderate (3.0–<6.0) | 0.93 (0.88–0.99) |
| Vigorous (≥6.0) | 0.93 (0.85–1.01) |
| PM2.5 level (μg/m3) | |
| Low (<59.8) | 1.00 |
| High (≥59.8) | 1.53 (1.43–1.64) |
a
Cox proportional hazard model, stratified by cohort and adjusted for age, sex, education level, urbanicity, geographic region, temperature, smoking status, alcohol drinking, body mass index, systolic blood pressure, diabetes mellitus, total cholesterol, and PM2.5 (for the association with PA volume) or PA volume (for the association with PM2.5) or both PM2.5 and PA volume (for the association with PA intensity).
Abbreviations: 95%CI = 95% confidence interval; HR = hazard ratio; MET = metabolic equivalent; PA = physical activity; PM2.5 = fine particulate matter.