Table 4.
Impact level of physical activity and risk of fecal incontinence
| MET hours/week categorya | ||
|---|---|---|
| Lowest | Highest | |
| High-impact activity b | ||
| Person-years of follow-up | 132,185 | 43,262 |
| No. of cases | 4652 | 1302 |
| Age-adjusted HR (95% CI) | 1.00 | 0.99 (0.93–01.06) |
| Multivariate-adjusted HR without mediators (95% CI)c | 1.00 | 1.00 (0.94–1.06) |
| Multivariate-adjusted HR (95% CI)d | 1.00 | 1.01 (0.95–1.08) |
| Low-impact activity b | ||
| Person-years of follow-up | 87,145 | 88,298 |
| No. of cases | 3420 | 2534 |
| Age-adjusted HR (95% CI) | 1.00 | 0.80 (0.76–0.84) |
| Multivariate-adjusted HR without mediators (95% CI)c | 1.00 | 0.81 (0.77–0.85) |
| Multivariate-adjusted HR (95% CI)d | 1.00 | 0.84 (0.79–0.88) |
High-impact activities sum of MET hours/week from high-impact activities (jogging, running, tennis, aerobics), low-impact activities all other MET hours/week that were not high-impact
aLowest category is below the 50th percentile (0 MET hours/week for high-impact activities, <10.1 MET hours/week for high impact activities), highest category above the 50th percentile (>0 METs/week for high-impact activities, >10 for low-impact activities)
bHigh-impact activity and low-impact activity are adjusted for each other in all models
cModel as below with potential mediators between physical activity and fecal incontinence (BMI, hypertension, diabetes mellitus) excluded
dModels adjusted for age (months), race, smoking (never, past, current), BMI (<18.5, 18.5–24.9, 25–29.9, 30–34.9, ≥35 kg/m2), menopausal hormone therapy use (never, past, current), parity (number of live births), hypertension (yes/no), diabetes mellitus (yes/no), neurologic disease (yes/no), and history of cholecystectomy (yes/no)