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Table 4 Correlations coefficients (r) between side to side CSA measurement and strength test results

From: Cross-sectional area of the paraspinal muscles and its association with muscle strength among fighter pilots: a 5-year follow-up

  Leg Extension Trunk Flexion Trunk Extension
r P r P r P
PS 3–4 (R) 0.59** < 0.01 0.47* 0.02 0.52** 0.01
PS 3–4 (L) 0.60** < 0.01 0.53** 0.01 0.46* 0.02
PS 4–5 (R) 0.29 0.15 0.36 0.08 0.42* 0.03
PS 4–5 (L) 0.15 0.47 0.47* 0.02 0.40* 0.04
Pso 3–4 (R) 0.68** < 0.01 0.39* 0.04 0.39 0.05
Pso 3–4 (L) 0.51** 0.01 0.35 0.08 032 0.11
Pso 4–5 (R) 0.60** < 0.01 0.48* 0.01 0.48* 0.01
Pso 4–5 (L) 0.47* 0.02 0.47* 0.02 0.40* 0.04
  1. PS Paraspinal Muscles, Pso Psoas Muscles, CC Correlation Coefficient (Spearman); *p < 0.05; **p < 0.01