Table 2.

Baseline day and night values as well as values during SD for the different parameters in men and women

MenWomen
DayNightSDDayNightSD
Uflow, ml·kg−1·h−11.27 ± 0.121.05 ± 0.101.82 ± 0.22*1.75 ± 0.170.98 ± 0.091.40 ± 0.11§
Uosm, mosmol/kgH2O464 ± 69364 ± 30359 ± 25362 ± 30467 ± 52373 ± 16
GFR, ml/min147 ± 5.8128 ± 4.8140 ± 5.1*127 ± 8.9120 ± 6.0120 ± 6.1
ENa, mmol·kg−1·h−10.073 ± 0.0070.051 ± 0.0030.135 ± 0.0130.088 ± 0.0110.067 ± 0.0060.112 ± 0.011
FENa, %0.43 ± 0.050.40 ± 0.030.96 ± 0.090.56 ± 0.090.46 ± 0.060.77 ± 0.10
EK, mmol·kg−1·h−10.063 ± 0.0050.034 ± 0.0020.061 ± 0.0080.077 ± 0.0070.041 ± 0.0060.040 ± 0.003
FEK, %13.06 ± 1.468.90 ± 0.7514.35 ± 1.8017.33 ± 2.519.43 ± 1.5410.24 ± 0.77*
Eur, mmol·kg−1·h−10.25 ± 0.010.16 ± 0.070.20 ± 0.01*0.23 ± 0.0120.17 ± 0.020.17 ± 0.01
FEUr, %44.44 ± 3.6842.37 ± 1.4948.67 ± 2.01*51.71 ± 2.8742.71 ± 3.0348.01 ± 2.76*
Eosm mosmol·kgH2O−1·h−10.53 ± 0.040.36 ± 0.020.61 ± 0.040.60 ± 0.030.42 ± 0.030.51 ± 0.02
TcH2O, ml/min0.81 ± 0.270.32 ± 0.120.48 ± 0.130.42 ± 0.160.57 ± 0.090.47 ± 0.05
EAVP,ng·kg−1·h−10.100 ± 0.0100.080 ± 0.0090.088 ± 0.0030.127 ± 0.0460.069 ± 0.0270.078 ± 0.005
EPGE2, ng·kg−1·h−10.38 ± 0.070.35 ± 0.060.39 ± 0.090.19 ± 0.010.16 ± 0.020.23 ± 0.03
MAP, mmHg90.4 ± 2.281.6 ± 2.885.3 ± 1.3*84.2 ± 1.374.1 ± 1.982.3 ± 2.2*
  • Values are means ± SE. SD, sleep deprivation; Uflow, diuresis; Uosm, osmotic urea; GFR, glomerular filtration rate; FENa, FEK, and FEUr, fractional excretion of sodium, potassium, and urea, respectively; Eur, excretion of urea; Eosm, osmotic excretion; TcH2O, solute free water absorption; EAVP and EPGE2, excretion of arginine vasopressin and prostaglandin E2, respestively; MAP, mean arterial pressure.

  • * Baseline vs. SD: P < 0.05 and

  • P < 0.001.

  • Gender-SD interaction: P < 0.05 and

  • § P < 0.01.