Figure 3. Percentage (%) change from pre- to post-measurements for (i) 50-m sprint, (ii) standing long jump (SLJ), (iii) Cooper’s test, (iv) forced vital capacity (FVC), (v) left calf girth (LCG), (vi) right calf girth (RCG), and (vii) resting heart rate (RHR) prior to and following a nine weeks study protocol including outdoor running training (OT), treadmill running training (TT) and a control group (CG). * significant difference from pre- to post-measurement, ** significant group-by-time interaction.