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Table 4 Baseline characteristics and changes in renal function and exercise capacity between active and non-active participants

From: Association between chronic kidney disease and physical activity level in patients with ischemic heart disease

  All patients
(n = 182)
Active participants
(n = 18)
Non-active participants
(n = 164)
P
Age (years) 64.0 ± 10.7 66.2 ± 9.8 63.7 ± 10.8 0.35
Gender (% male) 85.2 83.3 85.4 0.73
Height (m) 1.63 ± 0.08 1.64 ± 0.09 1.63 ± 0.08 0.58
Weight (kg) 64.1 ± 11.8 65.9 ± 14.4 63.9 ± 11.5 0.51
Body mass index (kg/m2) 23.9 ± 3.4 24.3 ± 4.4 23.9 ± 3.2 0.61
Unemployed (%) 47.8 61.1 46.3 0.32
Intervention for IHD     0.54
 CABG (%) 20.3 11.1 21.3  
 PCI (%) 79.7 88.9 78.7  
Comorbidities (%)
 Cerebrovascular disease 8.8 11.1 8.5 0.66
 Orthopedic disorder 19.9 23.5 19.5 0.75
 Diabetes mellitus 40.1 38.9 40.2 1.00
Smoking (%)     0.17
 Current 35.9 17.6 37.8  
 Former 35.4 53.0 33.5  
 Never 28.7 29.4 28.7  
Laboratory data
 Hemoglobin (g/dL) 12.9 ± 1.64 12.7 ± 1.36 13.0 ± 1.70 0.49
 Peak creatine kinase (IU/L) 2367 ± 2536 2719 ± 3102 2330 ± 2479 0.55
 Albumin (g/dL) 3.94 ± 0.42 3.91 ± 0.45 3.94 ± 0.41 0.74
 High-sensitive CRP (mg/dL) 0.76 ± 1.24 0.43 ± 0.44 0.79 ± 1.29 0.25
Left ventricular ejection fraction (%) 51.2 ± 13.7 50.0 ± 13.9 51.3 ± 13.7 0.70
Ankle-brachial index 1.08 ± 0.12 1.09 ± 0.14 1.08 ± 0.12 0.65
Duration of hospital stay (days) 25.9 ± 16.4 22.9 ± 6.73 26.3 ± 17.1 0.41
eGFR (mL/min/1.73 m2)
 At baseline (hospital discharge) 61.6 ± 19.2 58.8 ± 20.6 61.9 ± 19.1 0.52
 At 3 months 59.6 ± 20.5 61.8 ± 17.2 59.4 ± 20.9 0.68
 Δ eGFR (mL/min/1.73 m2) −0.97 ± 13.9 4.77 ± 19.7 −1.53 ± 13.2 0.12
6-min walk distance (m)
 At baseline (hospital discharge) 469.5 ± 99.8 451.8 ± 85.3 471.5 ± 101.3 0.43
 At 3 months 516.5 ± 110.2 511.9 ± 88.1 517.0 ± 112.6 0.86
 Δ 6-min walk distance (m) 46.9 ± 62.4 60.1 ± 37.8 45.5 ± 64.5 0.35
  1. Values are expressed as mean ± standard deviation or percentage
  2. CABG coronary artery bypass graft, CKD chronic kidney disease, CRP C-reactive protein, eGFR estimated glomerular filtration rate, IHD ischemic heart disease, PCI percutaneous coronary intervention