Table 4. Estimated means and SE at baseline (pre-) and posttest and % change (±SD) for functional capacity and body composition in the football training (FOOT) and the control (CON) group.
FOOT CON Time Time x group
Mean SE % Mean SE %
Functional capacity
   10m fast walk (s) Pre 4.74 0.16 4.24 0.16
Post 4.12 0.17 -12.4 ± 10.9* 4.26 0.17 1.1 ± 9.3 <0.001 <0.001
   5xSTS duration (s) Pre 8.34 0.21 7.85 0.22
Post 7.66 0.24 -8.5 ± 11.5 7.44 0.23 -4.2 ± 9.3 0.063 0.382
   5xSTS power (W) Pre 357 16 362 16
Post 359 17 0.6 ± 11.3 351 17 -1.0 ± 13.4 0.576 0.409
   Stair ascent duration (s) Pre 0.76 0.02 0.77 0.02
Post 0.72 0.02 -4.9 ± 6.3 0.76 0.02 -0.4 ± 8.5 0.022a 0.184a
   Stair ascent power (W) Pre 878 48 831 48
Post 907 49 4.5 ± 14.1 793 48 -5.0 ± 10.6 0.085 0.053
   CMJ jump height (cm) Pre 23.4 1.1 22.4 1.1
Post 24.2 1.2 4.0 ± 8.9 22.1 1.1 -1.3 ± 11.1 0.122 0.138
Body composition
   Body mass (kg) Pre 81.8 2.6 81.4 2.6
Post 81.6 2.6 -0.3 ± 2.0 81.2 2.6 -0.2 ± 2.5 0.172 a 0.929a
   Body fat (%) Pre 26.3 1.1 25.4 1.1
Post 25.1 1.1 -1.2 ± 1.2 25.0 1.1 -0.4 ± 1.2 0.007 0.083
   Skeletal muscle mass (kg) Pre 30.5 1.1 30.7 1.1
Post 31.5 1.1 3.4 ± 3.1 31.2 1.1 1.7 ± 4.2 0.024 0.225
p-values of Linear Mixed-Effects Models analyses (significant values in bold)
* significant within-group change from Pre to Post
anot normally distributed and non-parametric tests were performed and reported. For easier interpretation, non-transformed data means were reported for all variables. STS = sit-to-stand; CMJ = countermovement jump.