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. 2012 Feb 29;14(1):e37. doi: 10.2196/jmir.1998

Table 3.

Main and interaction effects for physical activity (mean, SD) between matched and mismatched groups.

Intention-to-treat (n = 803) Completers (n = 288)
Matched
(n = 261)
Mismatched
(n = 542)
Time (F2,801) group × time (F2,801) Matched
(n = 93)
Mismatched
(n = 195)
Time (F2,284) group × time (F2,284)
Total physical activity (minutes)
Baseline 336 (352) 315 (342) 308 (301) 314 (344)
1 week 355 (339) 320 (325) 348 (265) 322 (293)
1 month 362 (362) 335 (345) 5.07** 0.87 355 (332) 344 (339) 2.16 0.59
Difference +26 +20 +47 +30
Total physical activity sessions
Baseline 9.7 (7.1) 9.9 (9.3) 9.0 (6.1) 9.5 (7.5)
1 week 10.2 (7.1) 10.3 (9.8) 9.6 (5.7) 10.3 (8.9)
1 month 10.5 (7.6) 10.6 (9.4) 7.52*** 0.04 10.1 (7.4) 11.2 (8.7) 5.63** 0.23
Difference +0.8 +0.7 +1.1 +1.7
Walking (minutes)
Baseline 146 (158) 134 (154) 129 (146) 142 (167)
1 week 153 (155) 139 (150) 141 (139) 143 (140)
1 month 162 (159) 148 (159) 8.32*** 0.08 165 (156) 154 (161) 4.71* 0.93
Difference +16 +14 +36 +12
Moderate-intensity activity (minutes)
Baseline 54 (116) 50 (121) 44 (83) 54 (142)
1 week 66 (125) 56 (110) 55 (102) 56 (107)
1 month 70 (132) 59 (111) 9.53*** 1.13 56 (122) 60 (111) 0.49 0.19
Difference +16 +9 +12 +6
Vigorous-intensity activity (minutes)
Baseline 69 (121) 69 (130) 66 (111) 60 (105)
1 week 76 (118) 73 (125) 75 (102) 66 (113)
1 month 80 (125) 79 (133) 6.04** 0.26 67 (116) 66 (122) 0.64 0.22
Difference +11 +10 +1 +6