Table 1.
Baseline characteristics of the normal and low muscle mass groups
| Variables | Normal muscle mass (n=59), mean ± SD | Low muscle mass (n=76), mean ± SD | χ2 or T | P-value |
|---|---|---|---|---|
| Gender (n) | ||||
| Male/female | 17/42 | 22/54 | <0.001 | 0.986 |
| Age (years) | 69.34±7.06 | 73.20±8.08 | -2.96 | 0.004 |
| Weight (kg) | 64.97±10.23 | 58.94±10.19 | 3.40 | 0.001 |
| Height (m) | 1.61±0.07 | 1.59±0.09 | 1.13 | 0.260 |
| BMI (kg/m2) | 24.99±2.78 | 23.10±2.65 | 3.99 | <0.001 |
| FT (cm) | 0.46±0.17 | 0.43±0.17 | 0.87 | 0.387 |
| MT (cm) | 1.63±0.23 | 1.37±0.18 | 7.28 | <0.001 |
| MT/BMI (cm/kg/m2) | 0.07±0.01 | 0.06±0.01 | 4.06 | <0.001 |
| MT/FT (cm/cm) | 4.44±2.81 | 3.81±1.86 | 1.48 | 0.142 |
Notes: An independent t-test was performed in age, weight, height, BMI, FT, MT, MT/BMI, and MT/FT. Chi-squared test was performed in gender. Age, weight, BMI, MT, and MT/BMI were significantly different between the normal muscle mass and low muscle mass groups (P<0.05).
Abbreviations: BMI, body mass index; FT, fat thickness; MT, muscle thickness.