Produção Nacional
Revisado por pares
Reliability and Validity of the Belt-Stabilized Handheld Dynamometer in Hip- and Knee-Strength Tests
2017; National Athletic Trainers' Association; Volume: 52; Issue: 9 Linguagem: Inglês
10.4085/1062-6050-52.6.04
ISSN1938-162X
AutoresJaqueline Martins, Janaina Rodrigues da Silva, Marcelo Rodrigues Barbosa da Silva, Débora Bevilaqua‐Grossi,
Tópico(s)Lower Extremity Biomechanics and Pathologies
ResumoContext: 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.
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