Differences in muscle strength between sides according to age
Age (years) | N | Mean±SD | p Value for Δ* | ||
---|---|---|---|---|---|
D | ND | Δ | |||
FDI | |||||
≤30 | 60 | 4.00±0.52 | 4.05±0.59 | −0.05±0.29 | 0.582 |
31–40 | 55 | 4.00±0.75 | 4.04±0.79 | −0.04±0.33 | |
41–50 | 68 | 3.76±0.82 | 3.72±0.93 | 0.04±0.37 | |
51–70 | 88 | 3.34±1.04 | 3.35±1.12 | −0.01±0.48 | |
Overall | 271 | 3.72±0.87 | 3.74±0.96 | −0.01±0.38 | |
APB | |||||
≤30 | 60 | 4.12±0.67 | 4.20±0.66 | −0.08±0.38 | 0.298 |
31–40 | 55 | 4.00±0.88 | 3.96±0.90 | 0.04±0.33 | |
41–50 | 68 | 3.90±0.88 | 3.93±0.87 | −0.03±0.34 | |
51–70 | 88 | 3.42±1.15 | 3.43±1.19 | −0.01±0.47 | |
Overall | 271 | 3.81±0.98 | 3.83±1.00 | −0.02±0.39 | |
AT | |||||
≤30 | 60 | 3.90±1.00 | 3.90±0.93 | 0.00±0.66 | 0.309 |
31–40 | 55 | 3.89±0.98 | 3.75±1.09 | 0.15±0.52 | |
41–50 | 67† | 3.30±1.35 | 3.28±1.42 | 0.01±0.44 | |
51–70 | 88 | 2.83±1.57 | 2.83±1.58 | 0.00±0.64 | |
Overall | 270 | 3.40±1.37 | 3.37±1.39 | 0.03±0.58 | |
TS | |||||
≤30 | 60 | 4.83±0.49 | 4.82±0.50 | 0.02±0.13 | 0.036 |
31–40 | 54† | 4.78±0.63 | 4.76±0.67 | 0.02±0.24 | |
41–50 | 67† | 4.51±1.12 | 4.54±1.11 | −0.03±0.17 | |
51–70 | 88 | 4.34±1.25 | 4.25±1.32 | 0.09±0.36 | |
Overall | 269 | 4.58±1.00 | 4.55±1.03 | 0.03±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.