Utility of Accelerometers to Measure Physical Activity in Children Attending an Obesity Treatment Intervention
Table 1
Children’s habitual physical activity recorded by an accelerometer (Actigraph), at baseline (0-months), end-of-programme (3-months), and nine-month followup in 22 children (intention to treat analysis).
0-months Mean (SD) ()
3-months Mean (SD) ()
9-months Mean (SD) ()
0–3 month change ()
0–9 month change ()
Mean (95% CI)
value
Mean (95% CI)
value
MVPA-Freedson (mins/day)
60.2 (35.1)
65.4 (37.5)
62.8 (33.9)
6.4 (6.7 to 19.4)
.320
3.3 (10.1 to 16.6)
.612
MVPA-Puyau (mins/day)
15.9 (11.7)
18.6 (12.6)
17.8 (11.2)
2.9 (2.3 to 8.1)
.258
2.3 (3.4 to 8.0)
.405
Light-Puyau (mins/day)
142.3 (42.9)
144.2 (47.1)
152.4 (40.6)
7.0 (15.5 to 29.4)
.523
10.8 (8.2 to 29.8)
.247
Accelerometer Counts (counts)
581 (197)
595 (229)
593 (151)
23 (86 to 132)
.663
10.3 (65 to 86)
.778
Step count (steps/day)
7455 (2648)
8153 (2358)
8953 (2054)
819 (245 to 1884)
.124
1549 (653 to 2444)
.002
MVPA: Moderate & vigorous physical activity; Mean data only on 18 children who had at least 4-days of data at each time-point, differences done on for 0 to 3 month change, and for 0–9 month change.
