Table 2. Descriptive data on knee extension strength and motor fitness in adolescent boys. Data are means (±SD).
Training group (n = 36)
Control group (n = 58)
Pre
Post
%
Pre
Post
%
KES (kg)
41.6 (11.2)
47.9 (12.6) *
16.0
44.7 (10.1)
48.0 (11.1) *
8.1 #
KES/BM (kg/kg2/3)
3.08 (.59)
3.51 (.64) *
14.8
3.25 (.53)
3.46 (.57) *
7.0 #
Sprint velocity (m/s)
5.21 (.80)
5.18 (.83)
-.5
5.17 (.59)
5.32 (.67) *
2.9 #
Jump height (cm)
32.1 (6.0)
33.1 (6.5) *
3.4
31.6 (5.4)
31.9 (5.1)
1.8
*, Significance change between Pre and Post (p < 0.05).
#, Significance difference in relative change before intervention (p < 0.05). KES, knee extension strength; BM, body mass; %, relative change from the initial value at Pre.