Research Article

Physical Activity in Hemodialysis Patients Measured by Triaxial Accelerometer

Table 1

Characteristics of patients on hemodialysis (HD) and control subjects.

CharacteristicsHD patients ()Control subjects ()P

Age (years)47.5 ± 12.546.7 ± 13.10.85
Male (%)11 (58%)12 (63%)0.74
Race, nonwhite (%)12 (57.9%)6 (31.6%)0.15
Comorbidities0.001
 Hypertension (%)13 (68.4%)2 (10.5%)
 Diabetes (%)2 (10.5%)1 (5.3%)
 Cardiovascular diseases (%)4 (21.1%)0 (0%)
Educational level0.01
 ≤4 years (%)3 (15.8%)0 (0%)
 >4 and ≤8 years (%)7 (36.8%)1 (5.3%)
 >8 years (%)9 (47.4%)18 (94.7%)
Family income (USD/month)580 (838)2232 (1139)0.001
BMI (kg/m2)23.1 ± 3.926.1 ± 4.10.029
Creatinine (mg/dL)12.2 ± 5.40.8 ± 0.2<0.001
Hemoglobin (mg/dL)10.5 (3.5)13.8 (1.4)<0.001
Albumin (g/dL)3.8 (0.4)4.0 (0.3)0.03
Serum iron (μ/dL)66.7 ± 25.9125.6 ± 37.2<0.001
Ferritin (ng/mL)524.2 (418.3)70.0 (114.6)<0.001
Calcium (mg/dL)9.5 ± 0.79.6 ± 0.50.58
Phosphate (mg/dL)5.6 (2.8)3.8 (0.9)0.001
1.5 ± 0.2

Data are mean ± SD or median (interquartile range) for symmetrically and asymmetrically distributed data, respectively. BMI: body mass index and : dialysis adequacy.