Intradialytic isometric handgrip exercise does not cause hemodynamic instability: A randomized, cross-over, pilot...

Area of Science:

• Nephrology
• Cardiovascular Physiology
• Exercise Science

Background:

• Hemodialysis patients frequently experience hemodynamic instability.
• Intradialytic exercise is being explored as a strategy to mitigate this instability.

Purpose of the Study:

• To investigate the acute hemodynamic effects of different intensities of intradialytic handgrip exercise in hemodialysis patients.
• To determine if isometric handgrip exercise impacts hemodynamic stability during dialysis.

Main Methods:

• A randomized, cross-over pilot study involving eight hemodialysis patients.
• Patients underwent three conditions: regular hemodialysis, low-intensity handgrip exercise, and moderate-intensity handgrip exercise.
• Blood pressure and heart rate variability were monitored before and during each session.

Main Results:

• Neither low nor moderate intensity isometric handgrip exercise led to significant changes in hemodynamic stability compared to the control.
• A temporary, significant increase in systolic blood pressure and double product was observed immediately after moderate-intensity exercise, returning to baseline within 10 minutes.
• No sustained adverse hemodynamic effects were noted.

Conclusions:

• Intradialytic isometric handgrip exercise at low and moderate intensities does not appear to induce hemodynamic instability in hemodialysis patients.
• These findings support the potential safety of incorporating such exercises during dialysis to manage patient well-being.