Table 6. Regression coefficients of weather and physical activity in colder months, across gender and categories of cardiorespiratory fitness.
| Total n = 631, 57055 hours | Weather and PA in “Colder” months (November–March) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| in females, across CRF categories a | CRF difference among females | in males, across CRF categories a | CRF difference among males | |||||||
| Unfit (n = 80, 6034 hours) | Moderately fit (n = 148, 13527 hours) | Highly fit (n = 78, 7568 hours) | Unfit vs. moderately fit | Unfit vs. highly fit | Unfit (n = 81, 6442 hours) | Moderately fit (n = 165, 15823) | Highly fit (n = 79, 7661 hours) | Unfit vs. moderately fit | Unfit vs. highly fit | |
| PA | 509.3 (11.5) | 614.6 (8.8) | 691.5 (13.8) | 453.6 (12.9) | 578.9 (11.7) | 693.4 (14.4) | ||||
| Precipitation b | -10.8 (29.9) | -7.0 (22.3) | 14.1 (36.9) | ns | ns | -17.7 (32.2) | 59.0 (24.2)* | 131.4 (38.7)** | P < 0.05 | P < 0.01 |
| Temperature b | 6.1 (1.7)b | 9.3 (1.6)** | 15.6 (2.5** | ns | P < 0.01 | 8.9 (2.4)** | 8.6 (1.8)** | 18.8 (3.3)** | ns | P < 0.01 |
| Wind b | -10.3 (4.6)* | -8.6 (3.3)** | -5.8 (5.4) | ns | ns | -3.9 (4.5) | -9.3 (4.7)* | -11.8 (5.6)* | ns | ns |
| R2 within c | 0.4% | 0.4% | 0.7% | 0.4% | 0.3% | 0.7% | ||||
| Rho d | 12.4% | 8.9% | 6.2% | 6.5% | 6.2% | 6.8% | ||||
| F | 3.7** | 3.2** | 3.8** | 3.7** | 3.2** | 3.8** | ||||
a CRF categories: CRF measured as VO2peak (mL·kg-1·min-1) and categorized into unfit (25% lowest), moderately fit (50% medium) and highly fit (25% highest) individuals.
b Precipitation; measured as mm, Temperature; measured as °C, Wind; measured as m·s−1.
c R2 within; How much precipitation, temperature and wind explains of the variance in Overall PA
d Rho; How much of the variance is due to difference across time (interclass correlation).
**Statistical significant (P < 0.01)
*Statistical significant (P < 0.05), ns Non-significant.
CRF: Cardiorespiratory fitness. PA: Physical activity measured as triaxial counts·min-1 (mean per hour).