Table 2.

Twenty-four-hour urine values according to intervention perioda

ParameterControlLemonadeOrange JuiceANOVA P
Total volume (L/d)2.55 ± 0.542.61 ± 0.312.51 ± 0.350.51
Ca2+ (mg/d)159 ± 42154 ± 58146 ± 520.32
Mg2+ (mg/d)83 ± 2386 ± 21108 ± 28b,c<0.0001
Cr (mg/d)1589 ± 3491565 ± 3641585 ± 3150.81
Na+ (mEq/d)70 ± 3758 ± 3166 ± 480.28
K+ (mEq/d)38 ± 1139 ± 785 ± 21b,c<0.0001
Ammonium (mEq/d)37 ± 1036 ± 923 ± 8b,c<0.0001
Oxalate (mg/d)31 ± 1030 ± 735 ± 6b,c<0.005
UA (mg/d)527 ± 123491 ± 81533 ± 1160.22
Calculated RSR CaOx4.50 ± 1.514.26 ± 1.843.71 ± 1.58b0.06
Calculated RSR Br0.42 ± 0.270.32 ± 0.210.82 ± 0.56b,c<0.0001
Calculated undissociated UA (mg/d)184 ± 97181 ± 8877 ± 67b,c<0.0001
NAE (mEq/d)55.5 ± 16.348.9 ± 15.717.3 ± 20.8b,c<0.0001
  • a Data are mean ± SD. Br, brushite; CaOx, calcium oxalate; NAE, net acid excretion; RSR, relative supersaturation.

  • b P < 0.05 versus control.

  • c P < 0.05 versus lemonade.