Table 2

 Results of Mann–Whitney U test for baseline comparisons of outcome measures between control and intervention groups

Control (n = 20)Intervention (n = 20)p Value
CK, creatine kinase.
Data reported as median (interquartile range).
*Independent t test.
Pain (mm)
    Sit-to-stand0.0 (0.0–0.8)0.0 (0.0–0.0)0.24
    Passive stretch1.0 (0.0–5.0)2.0 (0.0–9.5)0.42
    Hopping0.5 (0.0–3.0)0.0 (0.0–2.0)0.69
    Running0.0 (0.0–1.0)0.0 (0.0–0.0)0.43
    Isometric strength8.0 (0.0–22.5)4.5 (1.3–17.5)0.84
Tenderness (mm)
    Mid-belly5.5 (0.0–15.3)3.0 (0.0–9.0)0.43
    Musculotendinous1.0 (0.0–7.8)1.0 (0.0–4.5)0.88
Circumference (mm)
    Mid-belly555 (531–569)540 (489–570)0.21
    Musculotendinous407 (391–426)394 (369–415)0.28*
Serum CK (IU/l)119.5 (64.0–133.0)106.0 (71.8–186.5)0.47
Hop (m)1.9 (1.7–2.1)1.8 (1.6–2.3)0.94
Torque (N.m)145.2 (113.3–162.3)132.6 (120.2–158.0)0.71