Table 3.
Within- and between-person variance and week-to-week reliability of habitual physical activity, total (N = 48)
| Percent of total variance | ||||||
|---|---|---|---|---|---|---|
| PA parametera | week 1 | week 2 | within-person variance | between-person variance | ICC between week 1 and 2 | |
| GM | GM | sw2 | sb2 | ICC | 95% CI | |
| Overall PA, cpm | 438.0 | 421.3 | 25.3 | 74.7 | 0.75 | 0.60, 0.85 |
| Time in inactivity, min/d | 1186.0 | 1192.1 | 25.3 | 74.7 | 0.76 | 0.61, 0.86 |
| Time in low intensity activity, min/d | 127.2 | 124.3 | 25.0 | 75.0 | 0.78 | 0.64, 0.87 |
| Time in moderate activity, min/d | 96.2 | 91.9 | 33.3 | 66.7 | 0.68 | 0.49, 0.80 |
| Time in vigorous activity, min/d | 14.0 | 13.8 | 18.2 | 81.8 | 0.82 | 0.70, 0.89 |
| Time in very vigorous activity, min/d | 3.7 | 3.4 | 32.0 | 68.0 | 0.69 | 0.51, 0.81 |
cpm counts per minute, ICC intraclass correlation coefficient, GM geometric mean, PA physical activity, sb2 between-person variance of physical activity between week 1 and 2, sw2 within-person variance of physical activity between week 1 and 2, 95% CI 95% confidence interval
aall analyses were performed using log-transformed data