Baseline characteristics and demographics

InterventionUsual care
Age years62±963±8
Body mass index#
 Underweight <18.5 kg·m−21 (1)2 (3)
 Normal 18.5–24.9 kg·m−224 (30)27 (37)
 Overweight 25–29.9 kg·m−231 (38)22 (30)
 Obese ≥30 kg·m−225 (31)22 (30)
FEV1 L1.67±0.591.48±0.43
FEV1 % pred59±2053±15
FVC L3.6±0.983.48±0.98
FVC % pred101±2099±19
6MWD m465±87459±73
6MWD % pred80±1579±12
CRQ-SAS (score 1–7)
 Emotional function5.0±1.14.8±1.2
Average steps per day (weekday)5824±34185717±2870
Average steps per day (weekend)5219±3696+5328±3424+
Average METs1.48±0.391.55±0.41
Long-term physiotherapy69 (82)58 (79)
  • Data are presented as n, mean±sd or n (%). FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; 6MWD: 6-min walking distance; CRQ-SAS: self-administered standardised chronic respiratory questionnaire; MET: metabolic equivalent of task. #: three missing values for intervention; : significantly higher than usual care; +: significantly lower than weekdays at p<0.001.