Table 1.
Descriptive characteristics and unadjusted physical activity data of participants (M ± SD except weight status)
| HIGH active | LOW active | |||||
|---|---|---|---|---|---|---|
| Demographic variables |
All (n = 98) |
Boys (n = 58) |
Girls (n = 40) |
All (n = 125) |
Boys (n = 41) |
Girls (n = 84) |
| Age (yr) |
10.6 (0.3) |
10.6 (0.4) |
10.7 (0.3) |
10.7 (0.3) |
10.7 (0.3) |
10.7 (0.3) |
| IMD score |
17.6 (10.3) |
17.5 (9.9) |
17.7 (10.9) |
18.8 (11.7) |
18.3 (13.3) |
18.7 (10.6) |
| Anthropometric variables |
|
|
|
|
|
|
| Stature (cm) |
142.8 (7.0) |
142.4 (7.0) |
143.4 (7.3) |
143.8 (7.7) |
141.5 (7.3) |
143.4 (7.3) |
| Body mass (kg) |
35.7 (7.7) |
35.5 (7.6) |
35.8 (8.0) |
38.9 (9.3)* |
36.5 (9.1) |
40.2 (9.2) |
| BMI z-score |
−0.01 (1.2) |
0.1 (1.1) |
−0.2 (1.3) |
0.4 (1.3)* |
0.3 (1.5) |
0.4 (1.2) |
| Maturity offset (yr) |
−2.4 (1.0) |
−3.1 (0.5) |
−1.3 (0.6)** |
−1.8 (1.1) |
−3.1 (0.5) |
−1.2 (0.6)** |
| Weight status variables |
|
|
|
|
|
|
| % Normal weight |
87.8% |
87.9% |
87.5% |
75.8% |
80.5% |
73.5% |
| % Overweight |
10.2% |
8.6% |
12.5% |
18.5% |
17.1% |
19.3% |
| % Obese |
2.0% |
3.4% |
0.0% |
5.6% |
2.4% |
7.2% |
| Physical activity variables |
|
|
|
|
|
|
| PA count·min-1 |
594.3 (131.5) |
610.4 (150.6) |
569.6 (91.6) |
414.0 (75.8) |
422.5 (68.4) |
409.5 (79.5) |
| Daily MPA (min) |
43.7 (12.2) |
45.8 (12.0) |
40.5 (11.8) |
35.7 (8.6) |
36.3 (8.5) |
35.4 (8.6) |
| Daily VPA (min) |
23.2 (9.7)‡ |
24.2 (10.0) |
21.8 (9.1) |
16.9 (6.4) |
18.2 (6.4) |
16.2 (6.4) |
| School time MPA (min) |
17.6 (4.9)‡ |
18.9 (4.7) |
15.6 (4.4) |
14.8 (4.4) |
15.0 (3.8) |
14.7 (4.6) |
| School time VPA (min) |
10.8 (4.0)‡ |
11.2 (4.2) |
10.2 (3.6) |
8.5 (3.9) |
9.0 (3.1) |
8.2 (4.3) |
| Out of school MPA (min) |
26.1 (9.6)‡ |
27.1 (9.7) |
24.6 (9.4) |
21.1 (6.4) |
21.7 (7.0) |
20.8 (6.1) |
| Out of school VPA (min) |
12.3 (7.0)‡ |
13.0 (7.2) |
11.3 (6.8) |
8.6 (3.8) |
9.6 (4.4) |
8.0 (3.3) |
| Before school MPA (min) |
3.8 (2.8)†† |
3.6 (2.2) |
4.1 (3.4) |
3.0 (1.8) |
2.9 (1.7) |
3.1 (1.9) |
| Before school VPA (min) |
1.2 (1.3) |
1.3 (1.2) |
0.9 (1.5) |
0.8 (0.9) |
0.9 (1.1) |
0.7 (0.8) |
| Class time MPA (min) |
10.3 (3.3)† |
11.2 (3.4) |
8.9 (2.6) |
9.0 (2.9) |
9.1 (2.9) |
8.9 (2.9) |
| Class time VPA (min) |
6.3 (2.4)† |
6.6 (2.6) |
5.8 (2.1) |
5.3 (2.5) |
5.8 (2.3) |
5.1 (2.6) |
| Recess MPA (min) |
1.3 (0.8) |
1.2 (0.8) |
1.4 (0.9) |
1.2 (0.9) |
1.3 (0.7) |
1.2 (0.9) |
| Recess VPA (min) |
0.9 (0.7) |
0.8 (0.7) |
1.0 (0.8) |
0.8 (0.8) |
0.9 (0.8) |
0.8 (0.8) |
| Lunchtime MPA (min) |
6.0 (2.3) |
6.5 (2.3) |
5.3 (2.0) |
4.6 (2.0) |
4.5 (1.9) |
4.6 (2.1) |
| Lunchtime VPA (min) |
3.6 (2.3)‡ |
3.8 (2.4) |
3.4 (2.0) |
2.3 (1.8) |
2.3 (1.7) |
2.3 (1.9) |
| After school MPA (min) |
15.2 (5.4)‡ |
15.8 (5.5) |
14.2 (5.1) |
10.4 (3.5) |
9.8 (3.5) |
10.7 (3.5) |
| After school VPA (min) | 7.9 (4.6)‡ | 8.2 (4.8) | 7.4 (4.3) | 3.7 (1.9) | 3.4 (1.7) | 3.8 (2.0) |
BMI: body mass index; IMD: Indices of Multiple Deprivation; MPA: moderate intensity physical activity; VPA: vigorous intensity physical activity;
* LOW > HIGH, P < .05.
** HIGH girls > HIGH boys; LOW girls > LOW boys, P < .001 † HIGH > LOW, P < .05.
†† HIGH > LOW, P < .01.
‡ HIGH > LOW, P < .001.