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Reliability of parameters during stair ascent measured with Leonardo Mechanograph(®) Stair A in healthy subjects


Saxer, S; Speich, R; Toigo, M; Mueller, S M; Ulrich Somaini, S (2015). Reliability of parameters during stair ascent measured with Leonardo Mechanograph(®) Stair A in healthy subjects. Journal of Musculoskeletal and Neuronal Interactions, 15(3):257-263.

Abstract

OBJECTIVES Stair climbing (SC) as daily activity is assessed with different SC-tests, but none directly measures ground reaction force over several steps. The Leonardo Mechanograph Stair A has five steps and four force sensors. This study aimed at investigating the reliability of the Stair A test for force, power and time to SC. METHODS 55 healthy participants (age: 48±14 years) were five times tested during SC with self-chosen and fast speed. 30 participants were examined for test-retest-reliability, calculated with the intraclass correlation coefficient (ICC). The variability was examined with the coefficient of variation (CV). To determine potential associations between SC and jumping performance or daily activity, squat and countermovement jumps were additionally performed and the International physical activity questionnaire (IPAQ) was completed. RESULTS The inter-visit ICCs of self-chosen and fast SC were good to excellent 0.63-0.77. The intra-visit ICCs were excellent after three trials (0.78-0.88). The CVs for SC with self-chosen speed were lower (2.1-6.6%) than those for fast SC (4.9-10.8%). There were no significant correlations between SC and jump parameters and only moderate correlations with the IPAQ. CONCLUSION The Stair A is a reliable tool for the assessment of SC.

Abstract

OBJECTIVES Stair climbing (SC) as daily activity is assessed with different SC-tests, but none directly measures ground reaction force over several steps. The Leonardo Mechanograph Stair A has five steps and four force sensors. This study aimed at investigating the reliability of the Stair A test for force, power and time to SC. METHODS 55 healthy participants (age: 48±14 years) were five times tested during SC with self-chosen and fast speed. 30 participants were examined for test-retest-reliability, calculated with the intraclass correlation coefficient (ICC). The variability was examined with the coefficient of variation (CV). To determine potential associations between SC and jumping performance or daily activity, squat and countermovement jumps were additionally performed and the International physical activity questionnaire (IPAQ) was completed. RESULTS The inter-visit ICCs of self-chosen and fast SC were good to excellent 0.63-0.77. The intra-visit ICCs were excellent after three trials (0.78-0.88). The CVs for SC with self-chosen speed were lower (2.1-6.6%) than those for fast SC (4.9-10.8%). There were no significant correlations between SC and jump parameters and only moderate correlations with the IPAQ. CONCLUSION The Stair A is a reliable tool for the assessment of SC.

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Additional indexing

Contributors:Institute of Physiotherapy Zurich University of Applied Sciences ZHAW, Technikumstrasse 71, 8401 Winterthur
Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic and Policlinic for Internal Medicine
04 Faculty of Medicine > University Hospital Zurich > Clinic for Neurology
04 Faculty of Medicine > Balgrist University Hospital, Swiss Spinal Cord Injury Center
04 Faculty of Medicine > University Hospital Zurich > Clinic for Pneumology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:September 2015
Deposited On:26 Nov 2015 13:07
Last Modified:05 Apr 2016 19:33
Publisher:International Society of Musculoskeletal and Neuronal Interactions
ISSN:1108-7161
Free access at:PubMed ID. An embargo period may apply.
PubMed ID:26350944

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