Table 2.

Reliability of the methods used.

Parameter	ICC (95% CI)	CV (in %)	SD
Maximal strength	0.978–0.987	1.8–2.0	11.5–13.9
Muscle thickness within one image	0.982–0.987	1.2–1.3	1.8–2.1
Muscle thickness between three images	0.951–0.971	1.7–2.2	2.6–3.5
Flexibility knee joint	0.964–0.984	1.2–1.3	1.3–1.5
Flexibility hamstrings	0.956–0.966	1.5–1.7	1.1–1.3
Flexibility ankle joint	0.978–0.989	2.3–2.7	0.4–0.5

Within one image, best and second-best value within a measurement; between three images, average best and average second-best value from all three measurements; ICC, intraclass correlation coefficient; CV, coefficient of variance; SD, standard deviation.