Table 1. Descriptive data on anthropometry in adolescent boys. Data are means (±SD).
Training group (n = 36)
Control group (n = 58)
Pre
Post
%
Pre
Post
%
Chronological age (yrs)
13.6 (.6)
13.7 (.6)
13.8 (.5)
14.0 (.5)
Body height (m)
1.58 (.09)
1.59 (.09) *
.7
1.61 (.09)
1.61 (.08) *
.6
Body mass (kg)
49.3 (10.5)
50.1 (10.3) *
1.6
50.8 (9.0)
51.5 (8.8) *
1.6
BMI (kg·m-2)
19.5 (2.7)
19.5 (2.7)
.2
19.6 (2.5)
19.7 (2.3)
.4
Percent body fat (%)
17.5 (7.5)
16.7 (7.1) *
-4.2
16.9 (7.0)
16.6 (6.4)
.0
Lean body mass (kg)
40.1 (6.2)
41.2 (6.2) *
2.7
41.8 (5.4)
42.6 (5.5) *
2.0 #
Thigh circumstance (cm)
45.8 (4.9)
46.6 (4.9) *
1.6
46.7 (4.2)
46.9 (4.1) *
.7 #
MTQF (cm)
4.52 (.60)
4.66 (.62) *
3.2
4.74 (.49)
4.76 (.50)
.5 #
MTQF/LBM (cm/kg1/3)
1.32 (.13)
1.35 (.14) *
2.3
1.37 (.12)
1.36 (.12)
-.1 #
*, Significance change between Pre and Post (p < 0.05)
#, Significance difference in relative change before intervention (p < 0.05)BMI, body mass index; MTQF, muscle thickness of anterior of thigh; LBM, lean body mass. %, relative change from the initial value at Pre.