The effectiveness of aerobic and muscle strength training in patients receiving hemodialysis and EPO: A randomized controlled trial

  • V. D
  • J. M
  • T. E
 et al. 
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Abstract

Background: Individuals with end-stage renal disease on hemodialysis therapy have reduced aerobic exercise capacity and reduced muscle strength. Methods: This was a single-blind, randomized, placebo-controlled trial of an exercise intervention in hemodialysis patients administered erythropoietin. The intervention consisted of progressive resisted isotonic quadriceps and hamstrings exercise and training on a cycle ergometer three times weekly for 12 weeks. Individuals in the control group underwent a nonprogressive program of range-of-motion exercises. Both groups were observed for an additional 5 months without intervention. Outcomes were assessed without knowledge of treatment assignment at baseline, 12 weeks, and 5 months. A healthy age- and sex-matched sample provided comparative data. Results: Our sample was relatively high functioning, with a mean score on the Physical Function subscale of the Short Form 36 (SF-36) of 76 of 100. At 12 weeks, there were large and statistically significant differences in favor of the experimental group on the submaximal exercise test (14 W; 95% confidence interval, 2 to 26) and muscle strength (45 lb; 95% confidence interval, 9 to 81), but not in the 6-minute walk, symptoms questionnaire, or SF-36. Differences between the intervention and control groups at 12 weeks were not evident on retesting 5 months after the end of the intervention. Compared with the healthy sample, patients were significantly lower functioning on the submaximal exercise test, muscle strength, and 6-minute walk test at baseline. Conclusion: In this high-functioning sample, the exercise program improved physical impairment measures, but had no effect on symptoms or health-related quality of life. The impact on patients with a greater degree of physical dysfunction needs to be rigorously studied. © 2002 by the National Kidney Foundation, Inc.

Author-supplied keywords

  • Canada
  • adult
  • aerobic capacity
  • aged
  • anemia
  • article
  • bicycle ergometer
  • clinical article
  • clinical trial
  • confidence interval
  • controlled clinical trial
  • controlled study
  • erythropoietin
  • exercise test
  • female
  • fitness
  • functional assessment
  • hamstring muscle
  • hemodialysis
  • human
  • isotonic exercise
  • kidney failure
  • male
  • muscle strength
  • outcomes research
  • physical disease
  • quadriceps femoris muscle
  • quality of life
  • questionnaire
  • randomized controlled trial
  • rating scale
  • scoring system
  • single blind procedure
  • symptom
  • training
  • walking

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Authors

  • DePaul V.

  • Moreland J.

  • Eager T.

  • Clase C.M.

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