King, SL, Vanicek, N and O'Brien, TD (2015) Gastrocnemius muscle architecture and Achilles tendon properties influence walking distance in claudicants with peripheral arterial disease. Muscle Nerve. ISSN 1097-4598

Text King et al 2015_Gastrocnemii muscle architecture and achilles tendon properties influence walking distance in claudicants with peripheral arterial disease.pdf - Accepted Version Restricted to Repository staff only Download (637kB)

Abstract

OBJECTIVES: The extent to which gastrocnemius muscle and Achilles tendon properties contribute to the impaired walking endurance of claudicants is not known. METHODS: Ultrasound images quantified muscle architecture of the lateral and medial gastrocnemius (GL and GM) and were combined with dynamometry during plantarflexor contractions to calculate tendon stress, strain, stiffness, the Young modulus, and hysteresis. Key parameters were entered into multiple regression models to explain walking endurance. RESULTS: Worse disease severity was significantly associated with longer fascicle: tendon length ratios (GL R = -0.789 and GM R = -0.828) and increased tendon hysteresis (R = -0.740). Walking endurance could be explained by GL and GM pennation angle, maximum tendon force, tendon hysteresis, and disease severity (R(2) = ∼0.6). CONCLUSIONS: Peripheral arterial disease was associated with functionally important changes in muscle and tendon properties, including the utilization of stored elastic energy. Interventions known to target these characteristics should be adopted as a means to improve walking endurance. This article is protected by copyright. All rights reserved.

Item Type:	Article
Additional Information:	This is the accepted version of the following article: "Gastrocnemius muscle architecture and Achilles tendon properties influence walking distance in claudicants with peripheral arterial disease", which has been published in final form at
Uncontrolled Keywords:	11 Medical And Health Sciences
Subjects:	R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions:	Sport & Exercise Sciences
Publisher:	Wiley
Related URLs:	http://www.ncbi.nlm.nih.gov/pubmed/26427003
Date Deposited:	16 Dec 2015 09:03
Last Modified:	04 Sep 2021 13:49
DOI or ID number:	10.1002/mus.24925
URI:	https://researchonline.ljmu.ac.uk/id/eprint/2328

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