TABLE 2

Lung function variables stratified by obesity, central obesity and level of leisure time physical activity

VariableTotal (n=22 743)ObesityCentral obesityLeisure time physical activity
No# (n=18 550)Mild (n=3454)Morbid+ (n=128)No (n=13 412)Yes§ (n=9327)High (n=4012)Medium (n=16 805)Low (n=1326)
FEV1 % predicted100 (91–111)101 (98–112)98 (88–109)88 (80–100)102 (93–112)99 (88–109)103 (94–113)101 (91–111)97 (86–107)
FVC % predicted100 (91–111)101 (92–111)95 (86–106)85 (78–96)102 (93–112)97 (87–107)103 (94–113)100 (90–110)96 (85–106)
FEV1/FVC % predicted100 (96–110)100 (95–110)103 (98–108)104 (75–85)100 (95–110)100 (97–110)101 (95–105)101 (96–106)102 (95–107)
FEV1 z-score0.06 (−0.62 to 0.77)0.10 (−0.56 to 0.80)−0.12 (−0.84 to 0.60)−0.82 (−1.37 to −0.01)0.14 (−0.50 to 0.86)−0.08 (−0.79 to 0.61)0.19 (−0.42 to 0.91)0.04 (−0.64 to 0.75)−0.22 (−0.94 to 0.52)
FVC z-score0.00 (−0.64 to 0.70)0.07 (−0.56 to 0.76)−0.31 (−0.97 to 0.39)−1.05 (−1.58 to −0.22)0.14 (−0.48 to 0.84)−0.21 (−0.86 to 0.48)0.20 (−0.43 to 0.88)−0.02 (−0.65 to 0.67)−0.31 (−1.03 to 0.45)
FEV1/FVC z-score0.06 (−0.57 to 0.64)0.02 (−0.62 to 0.58)0.30 (−0.31 to 0.86)0.45 (−0.28 to 0.90)−0.01 (−0.65 to 0.56)0.18 (−0.45 to 0.74)0.03 (−0.64 to 0.58)0.07 (−0.55 to 0.63)0.14 (−0.62 to 0.77)

Data are presented as median (IQR). FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; IQR: interquartile range. #: body mass index (BMI) <30 kg·m−2; : BMI 30–39 kg·m−2; +: BMI ≥40 kg·m−2; §: waist circumference (WC) ≥88 cm for women and ≥102 cm for men.