Exercise improves albumin fractional synthetic rate in chronic hemodialysis patients

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Abstract
To determine whether exercise augments the improvements in fractional synthetic rate (FSR) of albumin observed with nutrition alone. Randomized crossover study. Each patient randomly participated in two protein metabolism kinetic studies using primed-constant infusion of (13C) leucine 2 h before, during and 2 h after hemodialysis. Plasma enrichments of (13C) leucine and (13C) ketoisocaproate were examined to determine the FSR of albumin. General Clinical Research Center at Vanderbilt University Medical Center. Five chronic hemodialysis (CHD) patients. Intra-dialytic parenteral nutrition (IDPN) with or without exercise. Exercise performance during hemodialysis significantly improves the FSR of albumin beyond what is observed with IDPN alone (26.2±3.1% per day versus 17.7±1.9% per day, P<0.05). Exercise improves albumin fractional synthetic rate beyond what is observed with IDPN alone in the acute setting in CHD patients.