Table 2.

Results of the linear mixed models (time, group, intervention effects, and comparison of intervention effects) for moderate to vigorous physical activity (MVPA; minutes per day and 10-minute bouts).^a

Characteristics			Indicators per time point, mean (SD)							Difference in time within group (reference T0b), least squares mean (95% CI)					Time difference (reference T0), β (95% CI)					Group difference (reference PRINT), β (95% CI)			Group-by-time interaction (reference PRINT at T0), β (95% CI)
			T0		T1c		T2d		T1			T2		T1			T2					T1			T2
MVPA (minutes per day)
	WEB	84.4 (33.0)		92.3 (31.5)		81.3 (31.6)		2.68 (−6.43 to 11.78)			−13.12 (−23.40 to −2.84)		−1.46 (−9.87 to 6.95)			−9.37 (−18.58 to −0.16)		4.90 (−4.49 to 14.30)			4.13 (−4.69 to 12.96)			−3.76 (−13.33 to 5.82)
	WEB+	84.4 (39.7)		95.5 (37.7)		90.0 (36.7)		1.98 (−9.90 to 13.87)			−7.97 (−20.26 to 4.32)		N/Ae			N/A		8.73 (−3.44 to 20.89)			3.44 (−7.74 to 14.62)			1.40 (−11.04 to 13.83)
	PRINT	82.8 (29.2)		84.3 (26.1)		80.8 (28.8)		−1.46 (−9.87 to 6.95)			−9.37 (−18.58 to −0.16)		N/A			N/A		N/A			N/A			N/A
MVPA in 10-minute bouts (minutes per week)
	WEB	89.1 (121.2)		79.1 (106.6)		78.2 (108.4)		−17.06 (−57.94 to 23.83)			−49.64 (−95.83 to −3.45)		−2.28 (−40.18 to 35.62)			−37.7 (−78.87 to 3.48)		18.51 (−16.50 to 53.52)			−14.78 (−55.32 to 25.77)			−11.94 (−55.96 to 32.08)
	WEB+	98.3 (139.5)		119.8 (165.3)		86.2 (130.0)		15.76 (−38.31 to 69.83)			−53.48 (−109.47 to 2.51)		N/A			N/A		24.54 (−20.81 to 69.89)			18.04 (−33.38 to 69.45)			−15.78 (−72.90 to 41.34)
	PRINT	76.9 (108.9)		70.0 (87.1)		73.3 (81.0)		−2.28 (−40.18 to 35.62)			−37.7 (−78.87 to 3.48)		N/A			N/A		N/A			N/A			N/A

^aThe linear mixed model was adjusted for age, sex, BMI, level of education, family status, employment status, household income, subjective health status, built environment, activity-related support, preference, season, and valid wear time.

^bT0: baseline assessment.

^cT1: 3-month follow-up.

^dT2: 9-month follow-up.

^eN/A: not applicable.