Table 2.

Baseline characteristics in patients exercising <50 min/d and ≥50 min/d

CharacteristicPhysical Activity TimeP Value
<50 min/d (n=127)≥50 min/d (n=75)
Age (yr)67 (59, 74)62 (55, 67)<0.001
Women64 (50.4)41 (54.7)0.56
Body mass index (kg/m2)21.1 (19.1, 23.5)20.9 (18.8, 22.7)0.30
Time on hemodialysis (mo)38.0 (15.7, 115.0)46.0 (19.8, 127.8)0.36
Primary kidney disease0.21
 GN36 (28.3)31 (41.4)
 Diabetic nephropathy47 (37.0)19 (25.3)
 Hypertension10 (7.9)7 (9.3)
 Polycystic renal disease3 (2.4)4 (5.3)
 Other nephropathies31 (24.4)14 (18.7)
Comorbid condition
 Cardiac diseasea63 (49.6)37 (49.3)0.97
 Diabetes mellitus51 (40.2)27 (36.0)0.56
 Comorbidity score5.0 (4.0, 6.0)4.0 (3.0, 6.0)0.03
Laboratory values
 Serum albumin (g/dl)3.9 (3.7, 4.1)3.9 (3.7, 4.1)0.18
 Serum C-reactive protein (mg/dl)0.1 (0.1, 0.3)0.1 (0.0, 0.2)0.09
  • Values are expressed as median (25th, 75th percentiles) or number (percentage) of patients.

  • a History of coronary disease, congestive heart failure, myocardial infarction, peripheral vascular disease, or other cardiac diseases.