Table 6.
Comparison of the pulmonary function parameters between the groups of 65-year-olds
| Healthy controls
|
COPD
|
|||
|---|---|---|---|---|
| Non-geriatric | Geriatric | Non-geriatric | Geriatric | |
| FVC (%predicted) | 97.24±15.18 | 97.26±20.50 | 66.79±18.90b | 76.40±18.95a,c |
| FEV1 (%predicted) | 95.04±15.16 | 98.6±20.72 | 37.78±20.79b | 54.63±20.73a,c |
| FEV1/FVC (%) | 79.45±5.14 | 77.64±6.34 | 42.69±15.53b | 53.23±12.56a,c |
| MMEF (%predicted) | 74.12±23.08 | 65.78±28.10 | 14.36±11.41b | 19.70±11.18a,c |
| Z5 (%predicted) | 96.37±28.77 | 79.62±29.19d | 215.72±135.42b | 167.97±85.05a,c |
| Fres (L/s) | 12.23±3.83 | 13.14±3.84 | 24.65±8.94b | 22.66±6.96a |
| X5 (kPa/L/s) | −0.09±0.05 | −0.10±0.06 | −0.34±0.28b | −0.29±0.20a |
| R5 (%predicted) | 92.84±29.04 | 78.09±25.43d | 176.56±105.00b | 147.03±66.86a |
| R20 (%predicted) | 90.47±25.86 | 70.58±17.53d | 102.29±32.82 | 96.18±33.67a |
| R5–R20 (%predicted) | 107.22±107.23 | 127.75±98.34 | 658.04±640.25b | 488.01±350.12a |
Notes: Data are expressed as mean ± standard deviation.
a
P<0.001 compared with the geriatric healthy patients.
b
P<0.001 compared with the non-geriatric healthy patients.
c
P<0.05 compared with the non-geriatric COPD patients.
d
P<0.01 compared with the non-geriatric healthy patients.
Abbreviations: FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; MMEF, maximum midexpiratory flow rate; Z5, respiratory impedance; Fres, resonant frequency; X5, respiratory reactance; R5–R20, respiratory resistance.