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Abstract

International Journal of Exercise Science 14(3): 791-801, 2021. Previous exercise studies in individuals with motor neuron disease have shown some positive benefits but the stress of regular exercise could result in overuse weakness in this population. The purpose of this case study is to determine the efficacy, and tolerability of a high-cadence dynamic cycling intervention in an individual with motor neuron disease. A 67-year-old male with significant lower extremity weakness and a diagnosis of idiopathic motor neuron disease completed six 30-minute sessions of high cadence dynamic cycling over a two-week period using a custom-built motorized ergometer with the motor speed set at 80 revolutions per minute. This intervention resulted in an 80.4 m increase in walking distance during the six-minute walk test (21% increase), with a lower rating of perceived exertion than at baseline. Amyotrophic Lateral Sclerosis Functional Rating Scale- Revised scores improved slightly (2.4%) suggesting that the intervention was tolerated, and it did not compromise the participant’s physical function. These data show that this intervention can improve mobility, is well-tolerated and minimizes the risk of overuse weakness in an individual with motor neuron disease.

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