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Pubmed for Handhelds

PUBMED FOR HANDHELDS

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  • Title: Influence of lever arm and stabilization on measures of hip abduction and adduction torque obtained by hand-held dynamometry.
    Author: Krause DA, Schlagel SJ, Stember BM, Zoetewey JE, Hollman JH.
    Journal: Arch Phys Med Rehabil; 2007 Jan; 88(1):37-42. PubMed ID: 17207673.
    Abstract:
    OBJECTIVE: To examine the reliability of clinical techniques for testing hip abductor and adductor muscle performance. DESIGN: Repeated measures. SETTING: Academic laboratory. PARTICIPANTS: A sample of 21 healthy subjects (12 men, 9 women) between 22 and 31 years of age. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Reliability of repeated measures was estimated by calculating intraclass correlation coefficients. Torque production capability was calculated by multiplying force output obtained with a hand-held dynamometer by the length of the resistance lever arm. RESULTS: The reliability of abduction testing was greatest in the long-lever condition. Adduction test reliability was greatest in the long-lever condition with bench stabilization. The maximal hip abduction torque tested in the long-lever position was significantly greater (t(20)=9.21, P<.001) than that in the short-lever position. The maximal hip adduction torque occurred using a long lever for resistance application and a bench to stabilize the nontest leg (F(1,20)=15.64, P=.001). CONCLUSIONS: Muscle performance testing of hip abductors and adductors with a hand-held dynamometer can be performed with good to excellent intratester and intertester reliability. Hip abduction testing is best performed with a long lever. Hip adduction is best performed with a long lever and a bench to stabilize the nontest extremity.
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