Table 1 Descriptive statistics of the study sample
Non-participants (N = 3658) | Study population | |||||
|---|---|---|---|---|---|---|
Complete (N = 740) | p† | Men (N = 322) | Women (N = 418) | p‡ | ||
Age (years)* | 53 (39.5; 65) | 51 (41; 61) | <0.01 | 50 (39; 61) | 52 (41; 61) | 0.54 |
Men (%) | 49.2 | 45.1 | 0.04 | - | - | |
Smoking (%) | <0.01 | <0.01 | ||||
never smokers | 35.3 | 42.4 | 32.0 | 51.0 | ||
former smokers | 36.4 | 37.8 | 48.5 | 29.1 | ||
current smokers | 28.4 | 19.7 | 19.5 | 19.9 | ||
Physical activity (%) | 67.9 | 75.0 | <0.01 | 73.9 | 75.8 | 0.55 |
Waist circumference (cm) | 91.4 (80.9; 102.0) | 87.1 (78.5; 97.0) | <0.01 | 94.0 (86.5; 102.5) | 81.1 (74.0; 90.0) | <0.01 |
Body-mass-index (kg/m2) | 27.7 (24.5; 31.3) | 26.8 (24.1; 30.0) | <0.01 | 27.8 (25.0; 30.3) | 26.1 (23.2; 29.5) | <0.01 |
Glucose (mmol/l) | 5.4 (5.0; 6.0) | 5.3 (4.9; 5.7) | <0.01 | 5.4 (5.1; 5.9) | 5.2 (4.9; 5.6) | <0.01 |
Total cholesterol (mmol/l) | 5.4 (4.6; 6.1) | 5.4 (4.7; 6.2) | 0.11 | 5.3 (4.6; 6.1) | 5.5 (4.9; 6.2) | 0.02 |
Hypertension (%) | 50.1 | 38.7 | <0.01 | 43.1 | 35.1 | 0.03 |
Irisin (μg/ml) | - | - | - | 1.97 (1.47; 2.70) | 2.01 (1.48; 2.71) | 0.69 |
peak VO2 (ml/min) | - | - | - | 2600 (2183; 3000) | 1611 (1400; 1925) | <0.01 |
VO2@AT (ml/min) | - | - | - | 1200 (1000; 1400) | 850 (800; 1000) | <0.01 |
Oxygen pulse (ml) | - | - | - | 16.1 (14.4; 18.1) | 10.9 (9.3; 12.2) | <0.01 |
Maximum power output (watt) | - | - | - | 196 (180; 228) | 132 (116; 148) | <0.01 |