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Table 4 Relative knee muscle strength (N-m/ kg)

From: Effect of high body mass index on knee muscle strength and function after anterior cruciate ligament reconstruction using hamstring tendon autografts

  Baseline 16 weeks 28 weeks p value §p value δp value
Mean±SD Mean±SD Mean±SD
Injury side Extensor Normal BMI group 0.71±0.48 1.05±0.45 1.23±0.56§δ 0.025 0.017 0.050
High BMI group 0.75±0.37 0.77±0.40 0.88±0.40 0.816 0.224 0.191
p value 0.903 0.105 0.105    
Flexor Normal BMI group 0.58±0.30 0.83±0.18 1.06±0.29 §δ 0.050 0.012 0.012
High BMI group 0.68±0.27 0.70±0.24 0.84±0.25§ 0.737 0.019 0.079
p value 0.358 0.209 0.092    
Uninjured side Extensor Normal BMI group 1.24±0.53 1.61±0.44 1.58±0.50§ 0.093 0.017 0.889
High BMI group 1.18±0.37 1.38±0.45 1.52±0.44§ 0.098 0.004 0.301
p value 0.759 0.178 0.806    
Flexor Normal BMI group 0.80±0.21 1.08±0.24 1.09±0.25§ 0.028 0.012 1.000
High BMI group 0.87±0.25 0.98±0.27 1.02±0.31 0.098 0.070 0.756
p value 0.426 0.462 0.602    
  1. p ≤ 0.05 between normal and high BMI group
  2. §p ≤ .05 between baseline and 28 weeks
  3. p ≤ .05 between baseline and 16 weeks
  4. δp ≤ .05 between 16 weeks and 28 weeks
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