TABLE 3

Baseline characteristics between responders and nonresponders to the incremental shuttle walk test (ISWT) in the intervention group

RespondersNonrespondersp-value
Subjects139
Demographics
 Age years74±578±60.15
 Sex0.90
  Male9 (69)6 (66)
  Female4 (31)3 (33)
 Ex-smoker10 (77)7 (78)0.96
 Smoking history pack-years49 (28–105)45 (21–49)0.34
 Exacerbation within last year5 (38)5 (56)0.43
 Hospitalisation due to exacerbations within last year0 (0)1 (11)0.22
Anthropometric measurements
 Weight kg78±1471±180.32
 Waist circumference cm98±1292±180.33
 Hip circumference cm106±8102±150.44
 Mid-thigh circumference cm62±455±60.006*
Pulmonary function
 FEV1 % pred59±2252±190.28
 FEV1/FVC %53±1354±120.75
Body composition
 BMI kg·m−225±324±50.50
 Fat-free mass kg16±215±30.29
 FFMI kg·m−252±1345±140.38
Functional outcomes
 ISWT m265±134274±1320.88
 mMRC grade3 (2–3)3 (2–3)0.95
 Right handgrip kg32±1228±80.45
 Left handgrip kg30±1027±80.43
 STS5 s11±311±40.89
Questionnaires
 CAT score19±618±70.78
 Anxiety (HADS) score6 (2–13)3 (2–7)0.26
 Depression (HADS) score7±43±20.04*
 SGRQ total score42±1439±120.56
 MUST score0 (0–0)0 (0–2)0.36
Physical activity steps·day−14909±28513930±34950.49

Data are presented as n, mean±sd, n (%) or median (interquartile range), unless otherwise stated. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; BMI: body mass index; FFMI: fat-free mass index; mMRC: modified Medical Research Council dyspnoea scale; STS5: five-repetition sit-to-stand test; CAT: COPD Assessment Test; COPD: chronic obstructive pulmonary disease; HADS: Hospital Anxiety and Depression Scale; SGRQ: St George's Respiratory Questionnaire; MUST: Malnutrition Universal Screening Tool. *: p<0.05.