Demographic and functional characteristics of study subjects
| Control group | Transcutaneous muscle stimulation group | |
|---|---|---|
| BMI=body mass index; FEV1=forced expiratory volume in 1 second; TLC=total lung capacity; RV=residual volume; RV/TLC=ratio of absolute values of RV and TLC; Tlco=lung carbon monoxide transfer factor; %=percentage predicted value. | ||
| Age (years) | 61.5 (2.2) | 58.5 (2.1) |
| Sex (M/F) | 4/5 | 6/3 |
| BMI (kg/m2) | 27.1 (1.8) | 26.2 (2.2) |
| FEV1 (%) | 40.7 (3.9) | 35.6 (4.3) |
| TLC (%) | 108.8 (6.6) | 118.6 (5.5) |
| RV (%) | 181.4 (19.0) | 208.0 (15.6) |
| RV/TLC × 100 | 59.9 (3.5) | 58.8 (2.0) |
| Tlco (%) | 50.1(5.1) | 44.1 (5.0) |