Inter- und Intratester-Reliabilität der Kraftmessung von Knieextension und -flexion mit einem modifizierten Handdynamometer an gesunden Probanden

Zusammenfassung

In der physiotherapeutischen Praxis werden Kraftmessungen oft als Teil der körperlichen Untersuchung durchgeführt. Insbesondere Patienten mit Gonarthrose zeigen häufig Kraftdefizite der Knieextensoren und -flexoren. Um im Behandlungsverlauf erhobene Kraftmessungen zuverlässig interpretieren zu können, ist die Verwendung eines praktikablen, reliablen und validen Messinstruments wichtig.

Diese Studie testete die Intra- und Intertester-Reliabilität eines modifizierten Handdynamometers (HDD) an 50 gesunden Probanden. Das HDD erwies sich als reliables Messinstrument mit guten Intraclass-Korrelationskoeffizienten für Kraftmessungen am Kniegelenk. Da der relativ hohe Messfehler jedoch die Anwendbarkeit der Kraftmessung bei einzelnen Patienten einschränkte, sollten Folgestudien eine verbesserte Standardisierung evaluieren.

Abstract

Strength measurement is often part of the physical assessment in physiotherapy practice. Patients with osteoarthrosis of the knee often have strength deficits of knee extensor und flexor muscles. In order to interpret strength measurements taken during treatment the use of a feasible, reliable and valid assessment tool is important.

This study assessed the intra- und intertester reliability of a modified hand-held dynamometer (HDD) in 50 healthy subjects. The HDD proved to be a reliable assessment tool with good intraclass correlation coefficients for strength measurement of the knee muscles. The relatively high error of measurement does however limit the use of the strength measurement in individual patients; future studies should evaluate an improved standardisation.

Schlüsselwörter

Kraftmessung - Kniegelenk - Handdynamometer - Reliabilität

Keywords

strength measurement - knee - hand-held dynamometer - reliability

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