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J. Funct. Morphol. Kinesiol. 2017, 2(3), 32; doi:10.3390/jfmk2030032

Evaluation of Isokinetic Single-Leg Cycling as a Rehabilitation Exercise Following Anterior Cruciate Ligament Reconstruction Surgery

1
Department of Health Sciences, Furman University, Greenville, SC 29613, USA
2
Department of Bioengineering, Clemson University, Clemson, SC 29613, USA
*
Author to whom correspondence should be addressed.
Received: 26 July 2017 / Revised: 15 August 2017 / Accepted: 21 August 2017 / Published: 31 August 2017
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Abstract

The anterior cruciate ligament (ACL) is one of the most commonly injured ligaments, with over 250,000 injuries per year in the United States. Previous studies have found that ACL-deficient individuals avoid use of the quadriceps in the injured limb as a means of limiting anterior movement of the tibia in the absence of a functioning ACL. From these results, a study was designed to investigate the effectiveness of isokinetic single-leg cycling in increasing quadriceps muscle recruitment and activation. Ten control and seven ACL-reconstructed subjects completed a series of 15 s cycling trials in isokinetic mode at 75 rpm, while kinematic, kinetic, and electromyographic data of the lower limbs were collected, with the trials including both double-leg and single-leg cycling. It was hypothesized that there would be an increase in quadriceps muscle activity, peak knee extensor moment, and knee joint power in single-leg cycling when compared to double-leg cycling. The results of the study suggest that single-leg cycling may be an effective exercise in increasing the strength of the quadriceps following anterior cruciate ligament reconstruction surgery. Although no significant changes occurred, the results indicate that, given a specific limb power, more muscle force will be generated from the quadriceps muscle group in single-leg cycling than double-leg cycling. View Full-Text
Keywords: quadriceps avoidance; ACL rehabilitation; electromyography; joint kinetics; joint kinematics quadriceps avoidance; ACL rehabilitation; electromyography; joint kinetics; joint kinematics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Hutchison, R.; Myers, J.; Hayden, N.; Shearer, L.; Bruneau, K.; DesJardins, J.D. Evaluation of Isokinetic Single-Leg Cycling as a Rehabilitation Exercise Following Anterior Cruciate Ligament Reconstruction Surgery. J. Funct. Morphol. Kinesiol. 2017, 2, 32.

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J. Funct. Morphol. Kinesiol. EISSN 2411-5142 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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