Table 4 Inter-assessor intraclass correlation coefficients between assessments “B2” and “A2”
From: Isometric Strength Database for Muscle Maximal Voluntary Endurance Field Tests: Normative Data
Muscle isometric tests | B2 (sec.) Mean ± SD | A2 (sec.) Mean ± SD | Bias (sec.) Mean ± SD | CV (%) | ICC [95% CI] | 95% LOA (sec.) | SEM (sec.) | SEM (%) | |
|---|---|---|---|---|---|---|---|---|---|
Lower | Upper | ||||||||
Trunk flexor muscles | 146.0 ± 79.1 | 150.8 ± 78.9 | −4.9 ± 13.8 | 5.8 | 0.992 [0.979‑0.997] | −31.93 | 22.23 | 1.24 | 0.85 |
Back extensor muscles | 210.9 ± 71.9 | 211.8 ± 80.2 | −1.0 ± 20.2 | 6.4 | 0.983 [0.957‑0.993] | −40.58 | 38.68 | 2.64 | 1.26 |
Right quadratus lumborum muscles | 81.4 ± 36.4 | 82.6 ± 36.6 | −1.2 ± 11.7 | 8.5 | 0.975 [0.936‑0.990] | −24.08 | 21.78 | 1.85 | 2.33 |
Left quadratus lumborum muscles | 82.8 ± 30.6 | 83.6 ± 29.2 | −0.8 ± 12.7 | 8.1 | 0.955 [0.886‑0.982] | −25.71 | 24.11 | 2.70 | 3.33 |
Quadriceps muscles | 74.5 ± 31.2 | 77.3 ± 27.3 | −2.8 ± 11.9 | 9.2 | 0.957 [0.893‑0.983] | −26.06 | 20.56 | 2.47 | 3.32 |
Hamstrings muscles | 242.2 ± 112.6 | 245.6 ± 109.7 | −3.4 ± 13.6 | 3.6 | 0.996 [0.991‑0.998] | −30.00 | 23.20 | 0.86 | 0.35 |
Back muscles | 184.8 ± 75.5 | 186.6 ± 80.1 | −1.8 ± 14.6 | 4.5 | 0.991 [0.978‑0.997] | −30.47 | 26.87 | 1.39 | 0.75 |
Chest muscles | 77.1 ± 27.6 | 77.7 ± 23.7 | −0.6 ± 10.8 | 8.4 | 0.956 [0.889‑0.983] | −21.69 | 20.49 | 2.26 | 3.00 |