Intervention effects on children’s movement behaviour accumulation as a result of the Transform-Us! school- and home-based cluster randomised controlled trial

Table 1 Baseline characteristics for participants in the analytical sample per intervention group (Control, PA-I, SB-I and PA + SB-I)

	Control	N	PA-I	N	SB-I	N	PA + SB-I	N
Demographics (mean [SD])
N (%)	61 (22.8%)	61	82 (30.7%)	82	64 (24.0%)	64	60 (22.5%)	60
Age, years	8.6 (0.3)	61	8.7 (0.4)	82	8.8 (0.4)	64	8.8 (0.3)	60
Sex (n [%])		61		82		64		60
Girls	34 (56%)		45 (55%)		42 (66%)		28 (47%)
Boys	27 (44%)		37 (45%)		22 (34%)		32 (53%)
Socio-economic status (n [%])		61		82		64		60
High	0 (0%)		0 (0%)		0 (0%)		9 (15%)
Mid	38 (62%)		50 (61%)		39 (61%)		36 (60%)
Low	23 (38%)		32 (39%)		25 (39%)		15 (25%)
Adiposity markers (mean [SD])
Body mass index, kg/m²	17.5 (2.8)	61	17.2 (3.0)	79	17.5 (2.5)	64	17.5 (2.5)	60
Waist circumference, cm	58.8 (6.8)	61	59.3 (7.2)	79	59.9 (6.0)	64	60.5 (5.7)	60
Accelerometry (mean [SD])
Valid weekend days (n [%])^a		61		82		64		60
No weekend day	3 (4.9%)		7 (8.5%)		3 (4.7%)		7 (11.7%)
≥ 1 weekend day	58 (95.1%)		75 (91.5%)		61 (95.3%)		53 (88.3%)
Total SED, min	399.3 (56.0)	61	397.6 (60.2)	82	395.3 (58.5)	64	404.4 (67.6)	60
Total LPA, min	228.6 (34.2)	61	227.1 (31.3)	82	230.2 (37.6)	64	227.2 (36.0)	60
Total MPA, min	57.0 (11.7)	61	53.3 (11.9)	82	53.6 (11.8)	64	58.0 (15.3)	60
Total VPA, min	27.3 (12.0)	61	24.3 (10.3)	82	25.1 (13.0)	64	30.1 (15.7)	60
Time in SED bouts, min^b	140.0 (40.4)	61	138.9 (47.4)	82	136.9 (49.2)	64	148.8 (54.0)	60
Time in LPA bouts, min^b	96.3 (23.1)	61	96.0 (20.0)	82	98.3 (25.9)	64	95.0 (23.7)	60
Time in MPA bouts, min^b	9.8 (4.1)	61	8.5 (3.7)	82	8.2 (3.4)	64	8.8 (4.6)	60
Time in VPA bouts, min^{b, c}	7.2 (6.4)	61	6.0 (4.0)	82	6.8 (6.4)	64	8.9 (9.1)	60
MVPA (n [%])^c		61		82		64		60
< 60 min/day	6 (9.8%)		14 (17.1%)		14 (21.9%)		9 (15.0%)
≥ 60 min/day	55 (90.2%)		68 (82.9%)		50 (78.1%)		51 (85.0%)

The analytical sample (total n = 267) comprised of participants with complete valid accelerometry and covariates data
Abbreviations: PA-I Physical activity intervention group, SB-I Sedentary behaviour intervention group, PA + SB-I Combined physical activity and sedentary behaviour intervention group, SD Standard deviation, SED Sedentary time, LPA Light-intensity physical activity, MPA moderate-intensity physical activity, VPA vigorous-intensity physical activity, MVPA moderate- to vigorous-intensity physical activity
^aValid days were set at a minimum of 8 h on weekdays and 7 h on weekend days
^bTime in each intensity was divided into sporadic time and time in bouts, using < 5 min and ≥ 5 min for sedentary time, and < 1 min and ≥ 1 min for physical activity (including LPA, MPA and VPA), respectively
^cValues presented before zero replacement
^dBased on the average MVPA across included valid days

ISSN: 1479-5868