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Open AccessArticle

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

1
Interdisciplinary School of Health Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada
2
Department of Health and Exercise Science, University of Oklahoma, Norman, OK 73079, USA
3
Multiple Sclerosis Center of Excellence, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(18), 3445; https://doi.org/10.3390/ijerph16183445
Received: 22 August 2019 / Revised: 12 September 2019 / Accepted: 13 September 2019 / Published: 17 September 2019
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 (VO2peak). 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. View Full-Text
Keywords: multiple sclerosis; asymmetry; exercise; lower extremity; walking multiple sclerosis; asymmetry; exercise; lower extremity; walking
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Farrell, J.W., III; Bemben, D.A.; Black, C.D.; Larson, D.J.; Pardo, G.; Fjeldstad-Pardo, C.; Larson, R.D. Evaluation of Power Production Asymmetry during Cycling in Persons with Multiple Sclerosis. Int. J. Environ. Res. Public Health 2019, 16, 3445.

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