Table 1.

Anthropometric, body composition, and renal function parameters according to the level of physical activitya

ParameterSedentary (n = 57)Mild (n = 61)Moderate/Intense (n = 52)P
Age (yr)37.2 ± 14.039.5 ± 14.632.5 ± 10.9b0.0200
Weight (kg)69.3 ± 14.270.5 ± 12.967.8 ± 11.50.5400
BMI (kg/m2)25.7 ± 3.925.6 ± 4.123.1 ± 2.5b,c0.0001
Waist circumference (cm)82.1 ± 10.380.6 ± 14.775.7 ± 10.9c0.0300
Body fat (skinfold thickness; %)31.4 ± 8.430.7 ± 8.920.7 ± 8.8b,c0.0001
Body fat
    %29.6 ± 7.427.7 ± 6.718.4 ± 6.2b,c0.0001
    kg20.7 ± 7.719.7 ± 6.912.5 ± 4.7b,c0.0001
Fat-free mass
    %70.4 ± 7.472.3 ± 6.780.0 ± 11.9b,c0.0001
    kg48.5 ± 10.450.8 ± 9.655.3 ± 10.0b,c0.0002
BCM (kg)22.8 ± 7.223.9 ± 6.727.4 ± 6.3b,c0.0020
Serum cystatin (mg/L)0.82 ± 0.140.80 ± 0.140.79 ± 0.140.6000
Serum urea (mg/dl)29.2 ± 8.129.1 ± 8.230.6 ± 8.20.5900
Serum albumin (g/dl)4.46 ± 0.264.56 ± 0.264.70 ± 0.32b,c0.0001
Serum creatinine (mg/dl)0.95 ± 0.170.96 ± 0.131.04 ± 0.12b,c0.0020
Urinary creatinine (mg/24 h)1231 ± 4301283 ± 4001437 ± 471c0.0400
Urinary RBP (mg/L)0.05 ± 0.030.06 ± 0.050.08 ± 0.05c0.0300
Microalbuminuria (μg/min)6.7 ± 18.36.6 ± 10.87.2 ± 7.90.9600
CrCl (ml/min per 1.73 m2)88.3 ± 17.387.5 ± 18.391.2 ± 22.20.5600
CG (ml/min per 1.73 m2)93.0 ± 17.487.6 ± 15.089.0 ± 14.20.1500
MDRD (ml/min per 1.73 m2)84.5 ± 17.779.6 ± 12.281.8 ± 13.20.1900
  • a Data are means ± SD. BCM, body cell mass; BMI, body mass index; CG, Cockcroft-Gault; CrCl, creatinine clearance; MDRD, Modification of Diet in Renal Disease

  • b P < 0.05 versus mild.

  • c P < 0.05 versussedentary.