Table 3

Differences in muscle strength between sides according to age

Age (years)NMean±SDp Value for Δ*
DNDΔ
FDI
 ≤30604.00±0.524.05±0.59−0.05±0.290.582
 31–40554.00±0.754.04±0.79−0.04±0.33
 41–50683.76±0.823.72±0.930.04±0.37
 51–70883.34±1.043.35±1.12−0.01±0.48
 Overall2713.72±0.873.74±0.96−0.01±0.38
APB
 ≤30604.12±0.674.20±0.66−0.08±0.380.298
 31–40554.00±0.883.96±0.900.04±0.33
 41–50683.90±0.883.93±0.87−0.03±0.34
 51–70883.42±1.153.43±1.19−0.01±0.47
 Overall2713.81±0.983.83±1.00−0.02±0.39
AT
 ≤30603.90±1.003.90±0.930.00±0.660.309
 31–40553.89±0.983.75±1.090.15±0.52
 41–5067†3.30±1.353.28±1.420.01±0.44
 51–70882.83±1.572.83±1.580.00±0.64
 Overall2703.40±1.373.37±1.390.03±0.58
TS
 ≤30604.83±0.494.82±0.500.02±0.130.036
 31–4054†4.78±0.634.76±0.670.02±0.24
 41–5067†4.51±1.124.54±1.11−0.03±0.17
 51–70884.34±1.254.25±1.320.09±0.36
 Overall2694.58±1.004.55±1.030.03±0.26
  • Bold value indicates significant difference.

  • Average difference (Δ=D−ND) of strength between DH and NDH is shown by age. Values indicate the mean and SD of all tested muscles.

  • *Between age classes overall comparison by Kruskal–Wallis test.

  • †One missing value.

  • APB, abductor pollicis brevis; AT, anterior tibialis; D, dominant side; DH, dominant hand; FDI, first dorsal interosseous; N, number of tested patients; ND, non-dominant side; NDH, non-dominant hand; TS, triceps surae.