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Table 1 Descriptive statistics stratified by sex

From: The association between dynamic lung volume and peak oxygen uptake in a healthy general population: the HUNT study

  Men (n = 359) Women (n = 382)
Age median (years) (Interquartile range) 46.5 (36.5 – 55.5) 45.0 (32.6 – 55.2)
Age group (years)
 20 – 29 65 (18.1%) 77 (20.2%)
 30 – 39 45 (12.5%) 71 (18.6%)
 40 – 49 99 (27.6%) 86 (22.5%)
 50 – 59 91 (25.3%) 97 (25.4%)
 60 – 69 48 (13.4%) 44 (11.5%)
 70 – 79 11 (3.1%) 7 (1.8%)
BMI (kg/m2) 26.5 ± 3.0 25.4 ± 3.8
PAI median (Interquartile range) 15.0 (0.0 – 30.0) 15.0 (7.5 – 30.0)
Smoking status
 Never 186 (51.8%) 190 (49.7%)
 Former 109 (30.4%) 122 (31.9%)
 Daily 24 (6.7%) 40 (10.5%)
 Occasional 40 (11.1%) 30 (7.9%)
HRR −0.05 ± 0.08 −0.04 ± 0.07
VR 0.23 ± 0.12 0.30 ± 0.11
FEV1Z-score 0.28 ± 0.83 0.19 ± 0.87
VO2peak (ml/kg/min) 45.8 ± 9.1 36.8 ± 7.6
Peak O2pulse (ml/beat) 21.3 ± 3.8 14.0 ± 2.4
RERpeak 1.14 ± 0.05 1.13 ± 0.06
  1. BMI body mass index, PAI physical activity index, HRR heart rate reserve, VR ventilatory reserve, FEV1Z-score forced expiratory volume in one second Z-score, VO2peak peak oxygen uptake, O2pulse oxygen pulse, RERpeak peak respiratory exchange ratio