Reliability and validity of the belt-stabilized handheld dynamometer in hip- and knee-strength tests
Deutscher übersetzter Titel: | Reliabilität und Validität eines gürtelstabilisierten Handdynamometers zur Hüft- und Kniekrafttestung |
---|---|
Autor: | Martins, Jaqueline; Silva, Janaina Rodrigues da; Silva, Marcelo Rodrigues Barbosa da; Bevilaqua-Grossi, Débora |
Erschienen in: | Journal of athletic training |
Veröffentlicht: | 52 (2017), 9, S. 809-819, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1062-6050, 0160-8320, 1938-162X |
DOI: | 10.4085/1062-6050-52.6.04 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201710009160 |
Quelle: | BISp |
Abstract
Context: The belt-stabilized handheld dynamometer (HHD) has been used to assess the strength of knee- and hip-muscle groups. However, few researchers have examined its reliability and validity for assessing the strength of these muscles.
Objective: To evaluate the intra-examiner reliability of the belt-stabilized HHD and its validity and agreement with the isokinetic dynamometer for assessing the strength of knee- and hip-muscle groups.
Design: Cross-sectional study.
Setting: University laboratory.
Patients or Other Participants: We evaluated 26 healthy participants (13 men, 13 women; age = 23.5 ± 2.8 years, height = 1.7 ± 0.1 m, mass = 68.6 ± 12.4 kg) in 2 sessions using the belt-stabilized HHD and an isokinetic dynamometer for maximum strength of the hip adductors, abductors, flexors, extensors, internal rotators, and external rotators and the knee flexors and extensors.
Main Outcome Measure(s): We used reliability values provided by the intraclass correlation coefficient (2,3), standard error of measurement (SEM and percentage SEM), and minimal detectable change; correlation values comparing the belt-stabilized HHD and the isokinetic instrument using the Pearson correlation coefficient (r); and the mean difference in values comparing the 2 instruments using the Bland-Altman method.
Results: The intrarater HHD reliability was excellent for most measurements (range = 0.80–0.96; SEM = 1.3–5.3 kilograms of force or 4.8−18.9 Nm, percentage SEM = 7.0%–22.0%, minimal detectable change = 3.6–18.8 kilograms of force or 13.2−52.4 Nm) and was moderate only for bilateral knee flexion and left hip internal rotation (intraclass correlation coefficient [2,3] = 0.62–0.66 and 0.70, respectively). Correlation with the isokinetic dynamometer was moderate to high (r = 0.60–0.90), but the absolute values did not demonstrate concordance between results using the Bland-Altman method.
Conclusions: The belt-stabilized HHD measurements were reliable, and although they did not agree with those from the isokinetic dynamometer, the values were correlated for the hip- and knee-muscle groups.