Reliability and sensitivity of an instrument for measuring the midfoot passive mechanical properties.

Journal of Biomechanics
Fabrício Anicio MagalhãesSérgio Teixeira Fonseca

Abstract

To assess the test - retest reliability and sensitivity of an instrument developed to measure the passive mechanical properties of the midfoot joint complex (MFJC), nine female and three male healthy young adults were evaluated in two different days by two experienced examiners. After proper participant positioning on the instrument, the left forefoot was passively moved from eversion (20°) to inversion (45°) at 2°/s, while the rearfoot and shank were kept immobile. From the instrument's sensing units (torque meter and potentiometer at 100 Hz), passive torque and angle data were registered. Passive stiffness was calculated as the instantaneous slope of the torque vs. angle curve. Therefore, the variables analyzed were resting angle, passive torques and stiffnesses during inversion and eversion through the intraclass correlation coefficient (ICC3,3), standard error of measurement (SEM) and minimal detectable change (MDC95). For the resting angle, ICC3,3 ranged from 0.85 to 0.91, SEM ranged from 1.54° to 1.95° and MDC95 ranged from 4.26° to 5.41°. For the torques, ICC3,3 ranged from 0.85 to 0.97, SEM ranged from 0.09Nm to 0.42Nm and MDC95 ranged from 0.26Nm to 1.16Nm. Finally, for the stiffnesses, ICC3,3 ranged from 0.79 to 0.98,...Continue Reading

References

Sep 13, 2006·Gait & Posture·A LeardiniS Giannini
Sep 1, 2007·Arthritis and Rheumatism·K Douglas GrossDavid J Hunter
Mar 25, 2014·British Journal of Sports Medicine·Patrick O McKeonIrene Davis
Jun 6, 2017·The American Journal of Sports Medicine·James BeckerLi-Shan Chou
May 19, 2019·Musculoskeletal Science & Practice·Bruno Dayrell da Costa PaesThales Rezende Souza

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Citations

Mar 5, 2021·Brazilian Journal of Physical Therapy·Clara de Castro FajardoRenan Alves Resende
Feb 22, 2021·Journal of Biomechanics·Fabrício Anicio MagalhãesThales Rezende Souza

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