Table 2.
Time spent in sedentary, light, and moderate to vigorous physical activity before and after 4 months of intervention and providing useable accelerometry data (n=49)
| Variable | SE-UBR (n=15) Mean ± SD |
ED-UBR (n=20) Mean ± SD |
ED-Chair (n=14) Mean ± SD |
Time × group interactionb P-value |
|---|---|---|---|---|
| MVPA (minutes/day)a | ||||
| Before | 7±7 | 6±5 | 3±4 | 0.961 |
| After | 6±6 | 4±3 | 3±2 | |
| LPA (minutes/day)a | ||||
| Before | 236±81 | 258±79 | 222±84 | 0.010 |
| After | 256±83 | 236±70 | 196±66 | |
| Sedentary time (minutes/day)a | ||||
| Before | 604±118 | 577±119 | 658±129 | 0.0552 |
| After | 602±112 | 577±107 | 634±114 | |
Notes: Sedentary activity ≤100 cpm, light physical activity =100–1,952 cpm, moderate to vigorous physical activity ≥1,952 cpm.
Multivariate analysis of variance with repeated measures was performed for the three levels of physical activity, group × time interaction effect was significant, P=0.045
univariate analysis of variance.
Abbreviations: cpm, counts per minute; SE-UBR, self-efficacy and upper body resistance; ED-UBR, health education and upper body resistance; ED-Chair, health education and chair aerobics; MVPA, moderate to vigorous physical activity; LPA, light physical activity; SD, standard deviation.