Table 1: Descriptive data and Mann-Whitney U comparison of anthropometric characteristics and physical activity obtained by accelerometer and IPAQA, for adolescents aged 14 years or under.
|
|
≤14y |
Boys vs. Girls |
| Girls (n=33) |
Boys (n=42) |
Mann-Whitney U |
| Mean ± SD |
Median |
IQR (P25-P75) |
IQR |
Mean ± SD |
Median |
IQR (P25-P75) |
IQR |
Z |
P-Value |
|
Age (years) |
13.1±0.6 |
13.0 |
(13.0-14.0) |
1.0 |
13.2±0.6 |
13.0 |
(13.0-14.0) |
1.0 |
-.291 |
.771 |
|
Height (cm) |
156.9±6.0 |
157.0 |
(152.0-162.0) |
10.0 |
158.4±7.8 |
158.7 |
(152.8-164.0) |
11.3 |
-.887 |
.375 |
|
Weight (kg) |
53.2±9.4 |
53.0 |
(48.4-58.1) |
9.8 |
52.6±12.3 |
50.7 |
(46.0-58.0) |
12.0 |
-.806 |
.420 |
|
BMI (kg.m-2) |
21.5±3.0 |
21.5 |
(19.6-23.2) |
3.6 |
20.9±4.2 |
20.6 |
(18.1-22.3) |
4.2 |
-1.473 |
.141 |
|
BMI Centile |
72.2±22.5 |
79.3 |
(62.3-89.1) |
27.8 |
65.2±27.8 |
75.3 |
(45.0-86.3) |
41.3 |
-.934 |
.350 |
|
Body Fat (%) |
30.6±6.7 |
28.4 |
(26.1-33.9) |
7.8 |
23.1±7.8 |
20.8 |
(17.4-26.2) |
8.9 |
-4.606 |
.000 |
|
Waist Circumference (cm) |
71.6±7.8 |
69.2 |
(67.0-76.2) |
9.2 |
71.6±12.8 |
68.0 |
(66.4-74.1) |
7.7 |
-1.267 |
.205 |
|
Hip Circumference (cm) |
89.3±7.1 |
89.0 |
(86.0-93.5) |
7.5 |
86.1±10.0 |
82.5 |
(80.0-89.3) |
9.3 |
-2.720 |
.007 |
| Accelerometer |
Total Measured Time (min.day-1) |
850.9±64.1 |
876.6 |
(788.6-905.6) |
117.0 |
812.8±72.2 |
827.6 |
(776.6-868.1) |
91.5 |
-2.177 |
.029
|
| Sedentary PA (min.day-1) |
509.4±85.7 |
514.3 |
(454.9-567.8) |
112.9 |
446.4±104.0 |
420.2 |
(371.1-510.2) |
139.0 |
-3.213 |
.001 |
| Light PA (min.day-1) |
295.3±64.1 |
276.0 |
(253.4-343.1) |
89.7 |
315.5±61.8 |
313.7 |
(264.4-366.1) |
101.7 |
-1.291 |
.197 |
| Moderate PA (min.day-1) |
36.0±15.1 |
31.3 |
(26.2-49.3) |
23.0 |
55.1±17.7 |
54.3 |
(41.7-67.4) |
25.6 |
-4.376 |
.000 |
| Vigorous PA (min.day-1) |
10.2±11.2 |
4.8 |
(2.5-17.3) |
14.8 |
15.7±10.7 |
11.8 |
(7.2-24.3) |
17.1 |
-3.047 |
.002 |
| MVPA (min.day-1) |
46.2±22.9 |
41.9 |
(31.1-66.8) |
35.6 |
70.8±24.8 |
65.3 |
(49.8-86.6) |
36.8 |
-4.093 |
.000 |
| Total PA (counts.min-1) |
427.3±132.6 |
404.2 |
(350.2-494.2) |
144.0 |
584.6±145.1 |
590.8 |
(460.9-709.6) |
248.7 |
-4.344 |
.000 |
| Total PA (steps.day-1) |
14875.1±5136.9 |
15495.8 |
(10141.6-19160.3) |
9018.7 |
16953.4±5582.1 |
18220.8 |
(12284.2-20918.1) |
8633.9 |
-1.569 |
.117 |
| IPAQA |
Total Reported Time (min.day-1) |
150.0±120.7 |
98.6 |
(77.7-208.6) |
130.9 |
160.6±109.8 |
139.3 |
(62.7-230.4) |
167.7 |
-.576 |
.564 |
| Motor Transportation (min.day-1) |
19.6±20.0 |
19.0 |
(0.0-30.0) |
30.0 |
29.4±41.9 |
7.1 |
(0.0-51.4) |
51.4 |
-.016 |
.987 |
| Walking (min.day-1) |
60.0±47.3 |
51.4 |
(25.4-75.0) |
49.6 |
54.2±52.5 |
45.2 |
(8.2-90.4) |
82.1 |
-.823 |
.411 |
| Moderate PA (min.day-1) |
48.4±55.4 |
30.0 |
(7.1-64.3) |
57.1 |
52.7±52.4 |
37.6 |
(10.7-83.6) |
72.9 |
-.427 |
.669 |
| Vigorous PA (min.day-1) |
41.6±40.9 |
25.7 |
(12.9-64.6) |
51.8 |
53.6±43.6 |
36.4 |
(19.8-77.8) |
58.0 |
-1.580 |
.114 |
| MVPA (min.day-1) |
90.0±87.7 |
52.6 |
(31.4-121.8) |
90.4 |
106.3±77.4 |
87.4 |
(39.6-167.1) |
127.5 |
-1.185 |
.236 |
| Total PA (MET.min.day-1) |
778.9±661.5 |
498.2 |
(313.9-1033.2) |
719.3 |
881.6±593.7 |
730.6 |
(356.6-1282.1) |
925.5 |
-.966 |
.334 |
Abbreviations: SD, standard deviation; IQR, Interquartile range; BMI: Body Mass Index, PA: Physical Activity; IPAQA: International Physical Activity Questionnaire for Adolescents; MVPA: Moderate to Vigorous Physical Activity; MET: Metabolic Equivalents.