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Findings

What does this study add?

  • Participants had a mean age of 71 years and a mean BMI of 35.3 kg/m2.
  • Bivariate analyses showed that ALMBMI (r=0.57 to 0.58), FMI (r=-0.16 to -0.17), gait speed (r=0.20 to 0.21), grip strength (0.56 to 0.57), and knee extension strength (r=0.40 to 0.42) correlated with stiffness and failure load at the distal radius (all P<0.05).
  • In addition, ALMBMI (r=0.65 to 0.67), FMI (r=-0.22 to 0.23), gait speed (r+0.18 to 0.19), grip strength (r=0.58 to 0.59), and knee extension strength (r=0.44 to 0.45) correlated with stiffness and failure load at the distal tibia (all P<0.05).
  • Controlling for age and sex, multiple regression analyses revealed that ALMBMI (β=0.34 to 0.35) and grip strength (β=0.28 to 0.29) were the independent predictors of stiffness and failure load at the distal radius, explaining 45% to 46% of the variance in stiffness and failure load (P<0.001).
  • On the other hand, multiple regression analyses revealed that ALMBMI (β=0.45 to 0.52), grip strength (β=0.27 to 0.28), and FMI (β=0.17 to 0.18) were independent predictors of stiffness and failure load at the distal tibia, explaining 74% to 75% of the variance in stiffness and failure load (P<0.001).