Table 2.
Differences in physical activity by season.
| Spring | Summer | Autumn | Winter | |
|---|---|---|---|---|
| Difference in steps per day (%) | ||||
| Overall | Reference | −0.86 (−12.38, 12.18) | −6.24 (−18.86, 8.33) | −27.04 (−36.68, −15.93) |
| Age | ||||
| <65 years | Reference | −8.08 (−21.25, 7.30) | −10.27 (−24.74, 6.98) | −25.21 (−36.65, −11.70) |
| ≥65 years | Reference | 11.91 (−9.08, 37.74) | 2.36 (−20.65, 32.02) | −32.16 (−48.31, −10.97) |
| p for interaction | 0.14 | 0.40 | 0.55 | |
| Cardiorespiratory fitness (6MWD) | ||||
| <500 m | Reference | −1.21 (−18.1, 19.18) | 7.07 (−14.97, 34.83) | −27.63 (−41.48, −10.50) |
| ≥500 m | Reference | −0.75 (−15.53, 16.62) | −12.95 (−27.52, 4.55) | −20.97 (−34.54, −4.59) |
| p for interaction | 0.97 | 0.17 | 0.54 | |
| Difference in MVPA minutes per day (%) | ||||
| Overall | Reference | 5.06 (−14.6, 29.24) | −2.11(−23.13, 24.67) | −35.22 (−49.18, −17.43) |
| Age | ||||
| <65 years | Reference | 5.13 (−19.26, 36.89) | −1.43 (−26.71, 32.57) | −33.03 (−49.63, −10.95) |
| ≥65 years | Reference | 4.05 (−26.37, 47.04) | −3.75 (−37.24, 47.60) | −40.72 (−62.76, −5.62) |
| p for interaction | 0.96 | 0.93 | 0.66 | |
| Cardiorespiratory fitness (6MWD) | ||||
| <500 m | Reference | −4.25 (−30.56, 32.04) | 20.57 (−18.5, 78.39) | −38.65 (−57.62, −11.18) |
| ≥500 m | Reference | 11.12 (−15.17, 45.55) | −10.57 (−34.3, 21.73) | −26.01 (−46.46, 2.25) |
| p for interaction | 0.48 | 0.24 | 0.03 | |
Models were adjusted for age, sex, smoking status, FEV1% pred, any pulmonary comorbidities, and any extra-pulmonary comorbidities. Pulmonary comorbidities include chronic obstructive pulmonary disease, asthma, or interstitial lung disease, and extra-pulmonary comorbidities include cardiovascular diseases or diabetes mellitus. 6MWD, 6-min walk distance. MVPA, moderate-to-vigorous physical activity.