Table 1.
Anthropometric and physiological characteristics of BMI quartile groups (each group=34)
| Parameter | Quartiles of BMI [mean (standard deviation)] | ANOVA | ||||
|---|---|---|---|---|---|---|
| 1st | 2nd | 3rd | 4th | F | P value | |
| Age (yr) | 13.0(0.6) | 13.1(0.6) | 13.1(0.5) | 13.1(0.5) | F3,132=0.37 | 0.8 |
| Denotes Body Mass (kg) | 42.7(6.4) | 47.9(5.7) | 56.5(6.0) | 61.1(7.8) | F3,132=55.11 | <0.001 |
| Height (m) | 1.57(0.10) | 1.59(0.09) | 1.66(0.08) | 1.63(0.09) | F3,132=5.90 | <0.001 |
| BMI (kg•m −2 ) | 17.2(0.8) | 18.9(0.5) | 20.5(0.5) | 23.0(1.2) | F3,132=310.41 | <0.001 |
| Body fat (%) | 12.3(2.7) | 14.6(3.6) | 16.4(3.1) | 21.3(3.6) | F3,132=46.80 | <0.001 |
| Sit-and-reach test (cm) | 14.7(5.6) | 17.3(5.9) | 18.0(7.2) | 19.6(6.1) | F3,132=3.69 | 0.01 |
| PWC170 (W*kg −1 ) | 2.62(0.60) | 2.6(0.62) | 2.45(0.52) | 2.15(0.51) | F3,117=4.45 | 0.005 |
| CVJ (cm) | 31.0(4.8) | 34.3(7.5) | 30.2(4.6) | 29.8(7.0) | F3,89=2.71 | 0.05 |
| Handgrip strength (kg*kg −1 ) | 1.22(0.19) | 1.16(0.18) | 1.10(0.17) | 0.98(0.21) | F3,130=9.62 | <0.001 |
| Maximal power (W*kg −1 ) | 11.80(2.42) | 11.84(2.61) | 11.92(2.49) | 10.60(2.61) | F3,127=1.97 | 0.1 |
| Mean power (W*kg −1 ) | 7.60(0.88) | 7.44(1.05) | 7.66(0.86) | 6.72(1.20) | F3,105=5.21 | 0.002 |
BMI: Body Mass Index; PWC170: Physical Working Capacity in Heart Rate 170 beats*min−1; CVJ: Countermovement Vertical Jump