Table 2 Main characteristics of female and male subjects used to determine reference values of 6MWD (n = 530)
From: Six-minute walk distance in healthy subjects: reference standards from a general population sample
Females n = 287 | Males n = 243 | |
|---|---|---|
Age, years | ||
Mean (s.d.) | 46.4 (10.9) | 47.1 (12.8) |
Range | 21.2–75.8 | 21.2–77.8 |
Height, cm | ||
Mean (s.d.) | 163.0 (6.5) | 175.9 (6.7) |
Range | 146.0–186.0 | 156.0–192.0 |
Weight, Kg | ||
Mean (s.d.) | 61.7 (9.5) | 78.6 (9.9) |
Range | 41.0–106.0 | 57.0–107.0 |
BMI | ||
Mean (s.d.) | 23.2 (3.4) | 25.4 (2.8) |
Range | 16.9–31.2 | 17.6–31.6 |
Smoking habits, n (%) | ||
Non smokers | 216 (75.5) | 137 (56.4) |
Ex-smoker | 70 (24.5) | 106 (43.6) |
Physically active, n (%) | 119 (41.5) | 112 (46.1) |
6MWD, m | ||
Mean (s.d.) | 581.4 (66.5) | 608.7 (80.1) |
Range | 383.0–800.0 | 410.0–875.0 |
FEV1% predicted, % | ||
Mean (s.d.) | 103.7 (12.4) | 104.5 (11.4) |
Range | 77.3–166.9 | 80.6–159.9 |
FEV1/FVC, % | ||
Mean (s.d.) | 84.2 (6.1) | 82.7 (6.6) |
Range | 70.1–103.7 | 66.9–103.8 |