Background
Methods
Participants
Procedures
Measurements
Accelerometer
Non-wear log diary
Non-wear time from accelerometer
Valid days
Statistical analysis
Results
Boys/girls (n) | 44/33 |
---|---|
Age (years) | 13.2 ± 2.2 |
Height (cm) | 156.6 ± 13.6 |
Weight (kg) | 46.4 ± 12.3 |
Wear time (min.day− 1) | P* | Levels of PA (min.day− 1) | ||||
---|---|---|---|---|---|---|
Sedentary | P* | MVPA | P* | |||
Log diary method | 727.5 ± 154.2 | – | 515.2 ± 134.1 | – | 60.9 ± 42.9 | – |
Troiano et al. (2008)[11] | 756.0 ± 140.4 | 0.006 | 541.0 ± 121.1 | 0.002 | 58.6 ± 38.3 | 0.38 |
Choi et al. (2012)[15] | 767.0 ± 137.9 | 0.0001 | 551.0 ± 125.9 | < 0.0001 | 58.8 ± 38.3 | 0.42 |
60 min | 764.4 ± 135.0 | 0.0003 | 548.3 ± 122.7 | < 0.0001 | 58.8 ± 38.3 | 0.42 |
30 min | 736.4 ± 139.5 | 0.38 | 520.4 ± 118.1 | 0.54 | 58.8 ± 38.3 | 0.42 |
20 min | 712.2 ± 144.1 | 0.14 | 496.2 ± 114.2 | 0.026 | 58.8 ± 38.3 | 0.42 |
15 min | 689.1 ± 148.7 | 0.0003 | 473.1 ± 111.7 | < 0.0001 | 58.8 ± 38.3 | 0.42 |
10 min | 640.4 ± 154.6 | < 0.0001 | 424.2 ± 108.1 | < 0.0001 | 58.8 ± 38.3 | 0.42 |
Wear time | Sedentary time | MVPA time | |
---|---|---|---|
Troiano et al. (2008)[11] | 0.79 [0.65; 0.88] | 0.81 [0.72; 0.87] | 0.86 [0.81; 0.90] |
Choi et al. (2012)[15] | 0.79 [0.66; 0.88] | 0.79 [0.70; 0.86] | 0.86 [0.80; 0.90] |
60 min | 0.80 [0.67; 0.89] | 0.81 [0.72; 0.87] | 0.86 [0.81; 0.90] |
30 min | 0.80 [0.66; 0.88] | 0.79 [0.69; 0.86] | 0.86 [0.81; 0.90] |
20 min | 0.77 [0.63; 0.86] | 0.73 [0.61; 0.82] | 0.86 [0.81; 0.90] |
15 min | 0.73 [0.57; 0.83] | 0.65 [0.51; 0.76] | 0.86 [0.81; 0.90] |
10 min | 0.60 [0.43; 0.73] | 0.46 [0.31; 0.59] | 0.86 [0.81; 0.90] |
Days (n) | Kappa Coefficient [95% confidence intervals]a | |
---|---|---|
Log diary method | 179 | |
Troiano et al. (2008)[11] | 178 | 0.88 [0.84; 0.91] |
Choi et al. (2012)[15] | 179 | 0.89 [0.86; 0.91] |
60 min | 178 | 0.89 [0.86; 091] |
30 min | 178 | 0.89 [0.86; 091] |
20 min | 178 | 0.89 [0.86; 091] |
15 min | 178 | 0.89 [0.86; 091] |
10 min | 178 | 0.89 [0.86; 091] |
Frequency (% of days) | Range | Kappaa | ||||||
---|---|---|---|---|---|---|---|---|
0 | 1 | 2 | 3 | 4 | ≥ 5 | |||
Log diary method | 50.7 | 42.5 | 5.2 | 1.6 | 0 | 0 | 0–3 | – |
Troiano et al. (2008)[11] | 77.3 | 17.9 | 4.5 | 0.3 | 0 | 0 | 0–3 | 0.11 [0.02; 0.20] |
Choi et al. (2012)[15] | 90.1 | 8.5 | 1.4 | 0 | 0 | 0 | 0–2 | 0.09 [0.02; 0.16] |
60 min | 70.1 | 25.0 | 4.2 | 0.7 | 0 | 0 | 0–3 | 0.09 [−0.01; 0.18] |
30 min | 47.4 | 32.5 | 16.9 | 2.3 | 0.3 | 0.6 | 0–5 | 0.17 [0.08; 0.25] |
20 min | 26.6 | 29.6 | 20.1 | 10.7 | 4.9 | 8.1 | 0–11 | 0.07 [0.03; 0.12] |
15 min | 2.3 | 4.2 | 9.1 | 12.4 | 9.7 | 62.3 | 0–25 | 0.01 [0.00; 0.02] |
10 min | 1.9 | 3.3 | 9.7 | 10.1 | 11.4 | 63.6 | 0–25 | 0.01 [0.00; 0.01] |