Table 5

Changes in body composition measured by the bioimpedance analyser: full analysis set

ASV (n=15)Oxygen (n=18)p* Value
Body mass index (kg/m2)
 Baseline22.8±3.025.1±2.30.02
 3 months23.4±2.9†25.1±2.5
 △0.5±0.70.0±0.50.04
Total body water (L)
 Baseline33.3±5.234.9±5.40.39
 3 months33.5±5.235.0±5.6
 △0.2±0.80.1±0.70.68
Extracellular water (L)
 Baseline12.8±1.913.6±2.20.29
 3 months12.9±1.913.6±2.3
 △0.1±0.30.1±0.30.60
Extracellular water/total body water (%)
 Baseline38.4±0.838.8±0.90.19
 3 months38.5±0.738.9±1.0
 △0.1±0.30.0±0.30.45
Fat mass (kg)
 Baseline16.1±6.420.9±4.20.01
 3 months17.1±6.2†20.9±4.7
 △1.0±1.5−0.1±1.00.02
Lean fat mass (kg)
 Baseline45.2±7.147.4±7.30.41
 3 months45.5±7.147.5±7.5
 △0.4±1.10.2±1.00.56
  • Values are expressed as mean±SD.

  • *p Value for comparison between the ASV and oxygen groups.

  • †p<0.05 versus baseline within the same group.

  • ASV, adaptive servo ventilation.