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Table 3 Baseline characteristics of the study participants

From: Exercise training improves physical fitness in patients with pulmonary arterial hypertension: a systematic review and meta-analysis of controlled trials

Variable Exercise Control
Patients (n) 53 (40 F, 10 M) 53 (35 F, 18 M)
Mean age (years) 48.5 50.8
Pulmonary hypertension diagnosis (n)   
 PAH 50 46
  Ideopathic PAH 12 14
  Hereditary PAH 0 1
  PAH associated with congenital heart disease 5 4
  PAH associated with connective tissue disease 14 14
  PAH associated with portal hypertension 1 1
  Drug induced PAH 0 1
  PAH subtype not specified 16 11
 Chronic thromboembolic pulmonary hypertension 3 7
WHO-FC (n)   
 Class I 1 0
 Class II 12 13
 Class III 24 28
 Class IV 2 1
 Not reported (Fox et al.) 11 11
Mean pulmonary artery pressure (mmHg)* 49 47.1
6 minute walking test distance (m) 401 408
  1. n = number; PAH: pulmonary arterial hypertension; WHO-FC = World Health Organization Functional Class.
  2. *Not reported in Martinez-Quintana et al, mean of 4 remaining studies.