Evaluation of Power Production Asymmetry during Cycling in Persons with Multiple Sclerosis

John W. Farrell, Debra A. Bemben, Christopher D. Black, Daniel Larson, Gabriel Pardo, Cecilie Fjeldstad-Pardo and Rebecca D. Larson
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John W. Farrell: Interdisciplinary School of Health Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada
Debra A. Bemben: Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73079, USA
Christopher D. Black: Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73079, USA
Gabriel Pardo: Multiple Sclerosis Center of Excellence, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
Cecilie Fjeldstad-Pardo: Multiple Sclerosis Center of Excellence, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
Rebecca D. Larson: Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73079, USA

IJERPH, 2019, vol. 16, issue 18, 1-13

Abstract: Lower limb asymmetries have been observed in persons with multiple sclerosis (PwMS), and have been associated with mobility impairment. An incremental cycling test was performed on a cycle ergometer to determine peak power output (PPO) and peak oxygen consumption (VO 2 peak). Then, participants cycled at 50%, 60%, and 70% of their PPO to assess the contribution of each lower limb to power production. Two-way repeated measures ANOVA was used to detect group × intensity differences in power production asymmetry. Eight PwMS and six healthy individuals (Non-MS) completed the study. No statistically significant ( p > 0.05) group × intensity interactions or main effects were present when examining between-limb differences in power production. The current data do not indicate a statistically significant difference in power production asymmetry between groups and exercise intensities. Previous research has established a 10% difference between contralateral limbs as a threshold for asymmetry. The average asymmetry in power production in PwMS exceeded the 10% threshold at all measured outputs, suggesting the presence of asymmetry in power production.

Keywords: multiple sclerosis; asymmetry; exercise; lower extremity; walking (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
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