From: Isometric Strength Database for Muscle Maximal Voluntary Endurance Field Tests: Normative Data
Muscle isometric tests | B1 (sec.) Mean ± SD | B2 (sec.) Mean ± SD | Bias (sec.) Mean ± SD | CV (%) | ICC [95% CI] | 95% LOA (sec.) | SEM (sec.) | SEM (%) | |
---|---|---|---|---|---|---|---|---|---|
Lower | Upper | ||||||||
Trunk flexor muscles | 145.2 ± 79.3 | 146.0 ± 79.1 | −0.8 ± 20.1 | 9.1 | 0.984 [0.961‑0.994] | −40.15 | 38.65 | 2.54 | 1.75 |
Back extensor muscles | 207.4 ± 81.9 | 210.9 ± 71.9 | −3.5 ± 26.9 | 8.9 | 0.970 [0.924‑0.988] | −56.27 | 49.27 | 4.66 | 2.23 |
Right quadratus lumborum muscles | 77.5 ± 36.0 | 81.4 ± 36.4 | −3.9 ± 14.7 | 11.3 | 0.956 [0.891‑0.983] | −32.71 | 24.91 | 3.08 | 3.88 |
Left quadratus lumborum muscles | 79.2 ± 32.5 | 82.8 ± 30.6 | −3.6 ± 12.9 | 11.1 | 0.955 [0.889‑0.982] | −28.85 | 21.65 | 2.73 | 3.37 |
Quadriceps muscles | 74.1 ± 27.8 | 74.5 ± 31.2 | −0.4 ± 11.9 | 10.3 | 0.959 [0.897‑0.984] | −23.84 | 22.94 | 2.42 | 3.25 |
Hamstrings muscles | 241.8 ± 114.3 | 242.2 ± 112.6 | −0.5 ± 24.3 | 6.6 | 0.989 [0.972‑0.996] | −48.11 | 47.21 | 2.55 | 1.05 |
Back muscles | 185.8 ± 80.6 | 184.8 ± 75.5 | 1.0 ± 19.0 | 6.9 | 0.986 [0.964‑0.994] | −36.18 | 38.18 | 2.24 | 1.21 |
Chest muscles | 74.2 ± 26.2 | 77.1 ± 27.6 | −2.9 ± 12.1 | 10.5 | 0.946 [0.866‑0.978] | −26.69 | 20.89 | 2.82 | 3.73 |