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BioMed Research International
Volume 2014, Article ID 391646, 7 pages
http://dx.doi.org/10.1155/2014/391646
Research Article

Design and Reliability of a Novel Heel Rise Test Measuring Device for Plantarflexion Endurance

1Discipline of Physiotherapy, Faculty of Health Sciences, The University of Sydney, Cumberland Campus C42, P.O. Box 170, Lidcombe, NSW 1825, Australia
2Institute for Neuroscience and Muscle Research, The Children’s Hospital at Westmead, Locked Bag 4001, Westmead, NSW 2145, Australia

Received 5 February 2014; Revised 9 April 2014; Accepted 9 April 2014; Published 30 April 2014

Academic Editor: Giorgio Ferriero

Copyright © 2014 Amy D. Sman et al. 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.

Abstract

Background. Plantarflexion results from the combined action of the soleus and gastrocnemius muscles in the calf. The heel rise test is commonly used to test calf muscle endurance, function, and performance by a wide variety of professionals; however, no uniform description of the test is available. This paper aims to document the construction and reliability of a novel heel rise test device and measurement protocol that is suitable for the needs of most individuals. Methods. This device was constructed from compact and lightweight materials and is fully adjustable, enabling the testing of a wide variety of individuals. It is easy to assemble and disassemble, ensuring that it is portable for use in different settings. Findings. We tested reliability on 40 participants, finding excellent interrater reliability (ICC2,1 0.97, 95% CI: 0.94 to 0.98). Limits of agreement were less than two repetitions in 90% of cases and the Bland-Altman plot showed no bias. Interpretation. We have designed a novel, standardized, simple, and reliable device and measurement protocol for the heel rise test which can be used by researchers and clinicians in a variety of settings.