Table 2.
Day-level descriptive statistics for children’s day-level physical activity and sedentary behavior pattern metrics at each age (N=169)
| Age ≤ 8 to <9 | Age ≤9 to <10 | Age ≤10 to <11 | Age ≤11 to <12 | Age ≤12 to <13 | Age ≤13 to <14 | |||
|---|---|---|---|---|---|---|---|---|
| Number of days | 121 | 628 | 1160 | 1246 | 825 | 276 | ||
| Total MVPA (min) | Boys | M (SD) |
82.45 (33.35) |
73.48 (38.89) |
59.74 (33.95) |
59.25 (35.94) |
50.47 (32.31) |
51.44 (43.63) |
| Girls | M (SD) |
69.24 (30.94) |
54.71 (28.33) |
44.79 (26.01) |
40.88 (31.98) |
32.63 (22.36) |
30.93 (21.76) |
|
| Number of short (<10 min) MVPA bouts |
Boys | M (SD) |
34.97 (12.48) |
33.05 (12.09) |
27.99 (10.56) |
26.97 (10.41) |
21.81 (10.18) |
21.18 (10.50) |
| Girls | M (SD) |
46.48 (15.73) |
35.43 (11.79) |
30.24 (11.39) |
26.34 (11.19) |
21.94 (10.02) |
19.20 (9.05) |
|
| Number of long (≥20 mins) MVPA boutsb | Boys | M (SD) |
1.19 (1.20) |
1.12 (1.23) |
0.89 (1.13) |
0.85 (1.05) |
0.72 (0.96) |
0.80 (1.30) |
| Girls | M (SD) |
0.67 (0.79) |
0.56 (0.88) |
0.40 (0.73) |
0.41 (1.04) |
0.27 (0.63) |
0.28 (0.53) |
|
| MVPA dispersiona |
Boys | M (SD) |
0.43 (0.08) |
0.40 (0.10) |
0.38 (0.12) |
0.38 (0.12) |
0.38 (0.14) |
0.36 (0.14) |
| Girls | M (SD) |
0.32 (0.07) |
0.33 (0.09) |
0.31 (0.10) |
0.31 (0.12) |
0.30 (0.13) |
0.31 (0.14) |
|
| Total sedentary behavior (min) |
Boys | M (SD) |
429.85 (84.53) |
462.79 (107.67) |
497.13 (124.36) |
487.72 (104.47) |
518.17 (111.73) |
508.68 (103.32) |
| Girls | M (SD) |
413.15 (95.12) |
459.97 (107.82) |
488.02 (108.54) |
512.45 (101.86) |
551.41 (109.86) |
568.52 (94.12) |
|
| Number of sedentary breaks |
Boys | M (SD) |
85.89 (20.86) |
89.64 (20.89) |
86.53 (20.63) |
83.63 (19.17) |
77.09 (21.16) |
75.81 (19.03) |
| Girls | M (SD) |
105.22 (23.19) |
96.80 (20.40) |
89.74 (21.27) |
84.12 (23.42) |
77.28 (22.38) |
71.74 (24.26) |
|
| Number of long (≥60 min) sedentary boutsb |
Boys | M (SD) |
0.57 (0.74) |
0.57 (0.85) |
0.67 (0.98) |
0.68 (0.89) |
0.82 (0.92) |
0.70 (0.93) |
| Girls | M (SD) |
0.39 (0.77) |
0.50 (0.79) |
0.61 (0.87) |
0.74 (0.94) |
0.88 (1.11) |
1.20 (1.32) |
|
| Sedentary behavior dispersiona |
Boys | M (SD) |
0.59 (0.06) |
0.58 (0.05) |
0.59 (0.05) |
0.60 (0.05) |
0.60 (0.05) |
0.61 (0.05) |
| Girls | M (SD) |
0.56 (0.06) |
0.58 (0.05) |
0.59 (0.05) |
0.60 (0.05) |
0.61 (0.05) |
0.63 (0.04) |
|
M: mean; SD: standard deviation. MVPA: moderate-to-vigorous physical activity. Data are for valid accelerometer wear days (≥10 hours of valid accelerometer wear time).
a
Dispersion measured by the Gini index: where a lower Gini value indicates more even distribution across the day.
b
Counts of long MVPA and long sedentary bouts allow for a 2-min threshold of non-MVPA or non-sedentary time.