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Compensation of limb weight on interfaced raw torque signals from a KIN-COM® dynamometer to an AMLAB® Workstation

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Abstract

The effect of gravity should be considered when using isokinetic devices to measure human movement performance. In most isokinetic dynamometers gravity compensation is controlled by software through a gravity correction option. However in some complex research protocols the dynamometer signal acquisition and processing capability is not adequate to effectively synchronize or process a wide range of captured signals. Therefore when the force/torque signals from a commonly used dynamometer such as KIN-COM® are interfaced into a signal processing workstation such as AMLAB®, it is necessary to further process the received raw signals for gravity correction. The aim of this study was to evaluate the effectiveness of an AMLAB®-based instrument designed for gravity compensation of raw torque signals acquired from a KIN-COM® dynamometer. To check the accuracy of weight compensation within the AMLAB® environment, torque signals produced by a known weight during a 180-degree range of KIN-COM® lever arm movement were compared with and without weight compensation. The results indicated that this technique is an accurate means for weight compensation when raw torque signals from a KIN-COM® dynamometer are interfaced to an AMLAB® workstation.

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Authors and Affiliations

  1. School of Informatics and Engineering, Flinders University, Adelaide, Australia

    H. Nazeran

  2. School of Physiotherapy, University of South Australia, Adelaide, Australia

    S. Scutter & A. Warden-Flood

  3. Discipline of Physiology and Research Centre for Human Movement Control, School of Molecular and Biomedical Science, The University of Adelaide, 5005, Adelaide, SA, Australia

    S. Jaberzadeh

Authors
  1. S. Jaberzadeh
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  2. H. Nazeran
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  3. S. Scutter
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  4. A. Warden-Flood
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Correspondence to S. Jaberzadeh.

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Jaberzadeh, S., Nazeran, H., Scutter, S. et al. Compensation of limb weight on interfaced raw torque signals from a KIN-COM® dynamometer to an AMLAB® Workstation. Australas. Phys. Eng. Sci. Med. 27, 69 (2004). https://doi.org/10.1007/BF03178379

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  • DOI: https://doi.org/10.1007/BF03178379

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