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Reliability of isokinetic ankle inversion- and eversion-strength measurement in neutral foot position, using the Biodex dynamometer

  • Sports Medicine
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

This study was designed to investigate the intratester and intertester reliability of isokinetic ankle inversion and eversion-strength measurement in neutral foot position in healthy adults using the Biodex dynamometer. Twenty-five men and women performed five maximal concentric contractions at 60 and 180°/s angular velocities. Two physicians tested each subject. The first physician applied the test four times, and the second physician three times. Reliability of peak torque was assessed by calculating the intraclass correlation coefficient (ICC). At both angular velocities, inversion strength was greater than eversion, and when the angular velocity was increased, inversion and eversion strength were decreased, as tested by both physicians. The first measurements of inversion and eversion strength of the first physician were significantly lower than the other measurements (p<0.01). The intratester ICCs for ankle inversion in healthy young adults were highly reliable (ICC 0.92–0.96), and for the eversion values ranged from 0.87 to 0.94. Intertester ICCs for ankle inversion and eversion peak torque values demonstrated a value of 0.95. Isokinetic tests of ankle inversion and eversion strength at 60 and 180°/s angular velocities in neutral foot position for healthy adults are highly reliable with the Biodex dynamometer.

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Authors and Affiliations

  1. SSK Educational Ankara Hospital, Physical Medicine and Rehabilitation Clinics, Ankara, Turkey

    Ece Aydoğ & Aytül Çakci

  2. Department of Sports Medicine, Hacettepe University, Sihhiye, Ankara, Turkey

    Sedat Tolga Aydoğ & Mahmut Nedim Doral

Authors
  1. Ece Aydoğ
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  2. Sedat Tolga Aydoğ
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  3. Aytül Çakci
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  4. Mahmut Nedim Doral
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Correspondence to Sedat Tolga Aydoğ.

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Aydoğ, E., Aydoğ, S.T., Çakci, A. et al. Reliability of isokinetic ankle inversion- and eversion-strength measurement in neutral foot position, using the Biodex dynamometer. Knee Surg Sports Traumatol Arthrosc 12, 478–481 (2004). https://doi.org/10.1007/s00167-004-0530-8

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  • DOI: https://doi.org/10.1007/s00167-004-0530-8

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