Table 4.
Differences in self-reported physical activity and sedentary behavior at baseline (T0), 4 weeks (T1), and 8 weeks (T2) according to history of eHealth app use (N=87).
| Variable | Friedman test | T0, mean (SD) | T1, mean (SD) | T2, mean (SD) | P value within-subject effect (time)a | ||||||||||
|
|
χ2 (df=2) | P value |
|
|
|
T0 vs T1 | T0 vs T2 | ||||||||
| Prior use of eHealth app (n=43) | |||||||||||||||
|
|
Walking (min/week) | 2.229 | 0.328 | 186.51 (225.17) | 170.23 (150.92) | 211.16 (287.61) | — | — | |||||||
|
|
MPAb (min/week) | 0.043 | 0.979 | 68.37 (89.39) | 65.35 (75.29) | 99.77 (161.10) | — | — | |||||||
|
|
VPAc (min/week) | 1.938 | 0.380 | 61.39 (76.67) | 80.93 (95.74) | 86.98 (137.52) | — | — | |||||||
|
|
Total PAd (METe min/week) | 2.306 | 0.316 | 1408.05 (1231.73) | 1408.28 (1110.01) | 1842.88 (2428.60) | — | — | |||||||
|
|
Days of MVPAf≥30 min/day | 8.122 | 0.017 | 2.65 (1.91) | 3.70 (2.08) | 3.37 (2.08) | .001 | .03 | |||||||
|
|
Sitting (min/day) | 16.014 | <0.001 | 352.56 (186.57) | 241.86 (168.00) | 278.60 (177.93) | <.001 | .004 | |||||||
|
|
Screen time (min/day) | 4.262 | 0.119 | 206.05 (188.28) | 128.37 (102.91) | 143.95 (142.20) | — | — | |||||||
| Never used eHealth app (n=44) | |||||||||||||||
|
|
Walking (min/week) | 8.488 | 0.014 | 174.32 (297.76) | 165.45 (161.48) | 295.45 (338.15) | .32 | <.001 | |||||||
|
|
MPA (min/week) | 2.764 | 0.251 | 53.86 (84.53) | 62.27 (116.16) | 82.27 (157.40) | — | — | |||||||
|
|
VPA (min/week) | 1.048 | 0.592 | 64.09 (71.38) | 49.55 (64.30) | 61.82 (78.60) | — | — | |||||||
|
|
Total PA (MET min/week) | 4.409 | 0.110 | 1262.52 (1451.08) | 1242.36 (1329.49) | 1880.45 (1867.42) | — | — | |||||||
|
|
Days of MVPA ≥30 min/day | 1.248 | 0.536 | 2.84 (2.06) | 2.64 (1.88) | 2.95 (1.92) | — | — | |||||||
|
|
Sitting (min/day) | 1.987 | 0.370 | 316.36 (215.99) | 278.64 (200.76) | 255.91 (202.66) | — | — | |||||||
|
|
Screen time (min/day) | 1.822 | 0.402 | 146.36 (111.11) | 160.68 (158.49) | 146.82 (155.11) | — | — | |||||||
aWilcoxon signed-rank tests with P<.025 (planned comparisons T0 vs T1 and T0 vs T1) considered statistically significant. The Wilcoxon signed-rank test was only undertaken when the Friedman test was significant (P<.05).
bMPA: moderate-intensity physical activity.
cVPA: vigorous-intensity physical activity.
dPA: physical activity.
eMET: metabolic equivalent.
fMVPA: moderate-to-vigorous physical activity.