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Table 6 Receiver operating characteristic (ROC) analysis for all tests as a function of the age brackets for male group

From: Isometric Strength Database for Muscle Maximal Voluntary Endurance Field Tests: Normative Data

 

20‑29

(n = 50)

50‑59

(n = 50)

p

ROC

Mean ± SD

Mean ± SD

AUC

95% CI

P

Trunk flexor muscles

146.4 ± 41.5***

97.7 ± 41.5

< 0.001

0.803

0.712‑0.894

< 0.001

Back extensor muscles

216.8 ± 59.7***

144.7 ± 56.3

< 0.001

0.811

0.723‑0.900

< 0.001

Right quadratus lumborum muscles

98.9 ± 33.2***

55.5 ± 24.2

< 0.001

0.864

0.790‑0.939

< 0.001

Left quadratus lumborum muscles

100.3 ± 32.2***

56.7 ± 22.5

< 0.001

0.864

0.792‑0.936

< 0.001

Quadriceps muscles

93.6 ± 28.7***

69.0 ± 26.9

< 0.001

0.739

0.640‑0.837

< 0.001

Hamstrings muscles

274.1 ± 80.1***

204.9 ± 65.9

< 0.001

0.742

0.646‑0.838

< 0.001

Back muscles

212.9 ± 56.0***

143.1 ± 44.9

< 0.001

0.835

0.755‑0.916

< 0.001

Chest muscles

75.2 ± 17.5***

50.2 ± 14.7

< 0.001

0.872

0.798‑0.947

< 0.001

  1. ROC receiver operating characteristic, AUC area under the curve, CI confidence intervals, SD standard deviation; ***p < 0.001