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Can FES-cycling improve metabolism and oxygen consumption in COPD patients?
Mar 23
2017

Can FES-cycling improve metabolism and oxygen consumption in COPD patients?

Posted by Myolyn

 

While most people, including researchers, are interested in the benefits of FES-cycling for people with spinal cord injuries, a growing body of evidence is now spurring research into the benefits for other disease categories.

In a recently completed French study (NCT02594722), researchers asked whether FES-cycling might improve aerobic capacity in a range of breathing conditions called chronic obstructive pulmonary disease (COPD).

COPD is a progressive and potentially fatal disease that makes it hard to breathe. COPD includes people with emphysema and chronic bronchitis, and it affects an estimated 64 million people around the world, according to the World Health Organization.

In this first study of FES-cycling for COPD, the researchers enrolled 25 COPD patients. The study participants completed two measured sessions to see if FES-cycling improves certain metabolic and cardiovascular outcomes during endurance exercise. Participants were divided into two groups: an experimental group that participated in active FES-cycling and a placebo group that experienced sham FES (low level stimulation with no significant muscle contractions).

In each session, participants underwent 30 minutes of constant load cycling while the researchers measured oxygen uptake, ventilation equivalent for oxygen, ventilation equivalent for carbon dioxide, cardiac output, and lactate values, as well as perceived difficulty in breathing and perceived muscle fatigue.

The results of the study demonstrate significantly increased VO2 average (oxygen uptake) for the FES-cycling session compared to the non-FES session and a significant increase in lactate after the FES-cycling compared to standard session.

VO2 measures the body’s ability to consume oxygen, and higher lactic acid levels indicate more strenuous exercise. COPD patients have impaired lung function, which limits their ability to achieve sufficient exercise intensity to benefit from it. Thus, the higher average VO2 and lactate levels achieved by the COPD patients after FES-cycling indicates that the added FES increased the effective exercise intensity, potentially enabling people with COPD to achieve greater health benefits from exercise augmented by FES.

“These physiological results suggest that FES-cycling can improve cardiovascular and metabolic responses to exertion,” wrote the study authors. “To the best of our knowledge, no studies have evaluated the potential benefits of FES-cycling in patients with COPD.”

If further research corroborates this study, then the number of people around the world who might use FES-cycling to improve their health could vastly grow beyond people with spinal and neurological disorders, as there are over 3 million cases of COPD each year in the US alone.

MYOLYN’s mission is to improve health and human performance by empowering people to move. That vision drove the development of both clinical and home versions of the MyoCycle, which combines isokinetic cycling and FES into a single system to improve outcomes. While the MyoCycle was originally designed for people with paralysis, it has the potential to empower millions of other people to improve their own health by moving better. If you or someone you love is interested in the benefits of FES-cycling, please contact MYOLYN today!

Source: BMJ Open Respiratory Research, April 12, 2016

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4838753/

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