Table 1.
Participant characteristics and their pulmonary function and grip strength
| Characteristic | Total (n=51) | Middle age (n=18) | Older adults (n=33) | t/χ2 | P-value |
|---|---|---|---|---|---|
| Sex, male:female | 18±27 | 9:9 | 12:21 | 0.894 | 0.344 |
| Age (yr) | 68.69±10.40 | 58.11±3.94 | 75.36±6.36 | −10.430 | 0.000* |
| Weight (kg) | 60.88±10.60 | 61.75±9.54 | 61.00±10.99 | 0.244 | 0.809 |
| Height (cm) | 159.51±8.53 | 161.78±9.38 | 158.69±7.77 | 1.257 | 0.215 |
| Grip strength (kg) | 22.34±8.55 | 23.35±9.62 | 20.56±7.61 | 1.138 | 0.261 |
| FVC (L) | 1.96±0.49 | 2.21±0.46 | 1.77±0.42 | 3.470 | 0.001* |
| FEV1 (L) | 1.57±0.48 | 1.90±0.47 | 1.34±0.33 | 4.933 | 0.000* |
| FEV1/FVC | 80.52±13.46 | 86.53±10.42 | 76.57±12.90 | 2.807 | 0.007* |
| PEF (L/min) | 2.87±1.40 | 3.58±1.71 | 2.34±0.85 | 2.871 | 0.009* |
| MIP (cmH2O) | 28.56±10.51 | 31.17±12.68 | 26.90±8.83 | 1.406 | 0.166 |
| MEP (cmH2O) | 30.98±9.81 | 33.83±8.62 | 29.03±10.17 | 1.696 | 0.096 |
Values are presented as mean±standard deviation.
FVC, forced vital capacity; FEV1, forced expiratory volume in 1 sec; PEF, peak expiratory flow; MIP, maximal inspiratory pressure; MEP, maximal expiratory pressure.
*
P<0.05, significantly different between middle age and older adults groups.