Reliability of hand-held dynamometer for strength testing of knee musculature in healthy Indian pediatric population: A cross-sectional study

Jaya Shanker Tedla, U. V. Shenoy, Sharada L. Nayak, Kalyana Chakravarthy

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    Objective: This study was designed to determine intra-rater and inter-rater reliability of hand held dynamometer for testing knee flexors and extensors isometric muscle strength. Study Design: Cross sectional study Subjects: 29 young healthy children, 15 boys and 14 girls between the age group of 10 -15 years with mean age12.58 ± 1.63 (Mean ± SD) were included in the study. Methodology: Subjects were tested with a Base line portable hand held dynamometer on three separate occasions by two separate examiners to determine maximal isometric strength values for knee flexors, and knee extensors. Results: The mean scores for knee flexion and extension exhibited excellent inter-rater reliability with ICC ranging from 0.93 to 0.96 and moderate to good intra-rater reliability with ICC ranging from 0.65 to 0.86 at 95% of CI. Conclusion: The hand held dynamometer is a reliable tool to use in determining lower limb muscle force production. And it can be reliably used in assessment of muscle strength in healthy pediatric population age 10-15 years. Implications: Since the hand held dynamometer has been found to be reliable in healthy pediatric population, further studies are recommended for its reliability in children with various dysfunctions.

    Original languageEnglish
    Pages (from-to)11-18
    Number of pages8
    JournalJournal of Physical Therapy
    Issue number1
    Publication statusPublished - 01-12-2010


    All Science Journal Classification (ASJC) codes

    • Physical Therapy, Sports Therapy and Rehabilitation
    • Rehabilitation

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