Intersession Reliability of the Omnikinetic Closed-Chain Dynamometer

in Journal of Sport Rehabilitation
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The Omnikinetic closed-chain dynamometer calculates bilateral ankle, knee, and hip moments during a semirecumbent stepping motion against a predetermined load.


To establish intersession reliability of several kinetic variables during different load and speed conditions over a 4-wk period.


19 healthy, physically active adults (age 21 ± 2 y, height 174.7 ± 10.5 cm, mass 74.0 ± 17.2 kg).


Peak measurements were recorded from the dominant leg for joint torque, power, root-mean-square (RMS) power, and knee shear.


Intersession reliability ranges across conditions were ankle torque .422−.947, ankle power .336−.877, ankle RMS .671−.893, knee torque .816−.918, knee power .823−.927, knee RMS .855−.943, knee shear .832−.936, hip torque .436−.752, hip power .691−.918, and hip RMS .448−.895.


Moderate to strong reliability was observed in most measurements of the ankle and knee, whereas the hip showed increased variability.

Hopkins is with the Dept of Physical Education at Brigham Young University, Provo, UT 84602-2070. Adolph is with the School of Kinesiology and Recreation at Illinois State University, Normal, IL 61790.

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