Effect of intradialytic aerobic exercise on serum electrolytes levels in hemodialysis patients

Iran J Kidney Dis. 2012 Mar;6(2):119-23.


Introduction: We aimed determine the impact of an 8-week intradialytic exercise program, consisting of 15 minutes of cumulative duration low-intensity exercise during the first 2 hours of dialysis on serum electrolytes levels and hemoglobin.

Materials and methods: In a randomized controlled trial of in an outpatient hemodialysis unit, clinically stable hemodialysis patients (n = 47) were included and assigned into the aerobic exercise group (n = 25) and the control group (n = 23). Aerobic exercises were done in groups, 15 min/d, 3 times a week, for 2 months. The main outcome measures were biochemical variables including serum levels of calcium, phosphate, and potassium levels and hemoglobin level.

Results: After an 8-week intervention, significant improvements were seen in serum phosphate levels (decreased by 1.84 mg/dL) and serum potassium levels (decreased by 0.69 mg/dL). No side-effects were observed. Serum calcium and hemoglobin levels did not change significantly in the exercise group.

Conclusions: A simplified aerobic exercise program is a complementary, safe, and effective clinical treatment modality in patients with end-stage renal disease on dialysis.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Electrolytes / metabolism*
  • Exercise Therapy / methods*
  • Exercise*
  • Female
  • Humans
  • Kidney Failure, Chronic / blood*
  • Kidney Failure, Chronic / rehabilitation
  • Male
  • Renal Dialysis*
  • Single-Blind Method
  • Young Adult


  • Electrolytes