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A three-dimensional computerized isometric strength measurement system.

Nancy L Black1, Biman Das

  • 1Faculté d'ingénierie, Université de Moncton, Moncton, New Brunswick, Canada E1A 3E9. blackn@umoncton.ca

Applied Ergonomics
|July 18, 2006
PubMed
Summary

The Computerized Isometric Strength Measurement System (CISMS) accurately measures isometric strength for paraplegic and able-bodied individuals. This versatile and affordable system provides reliable data for various populations.

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Area of Science:

  • Biomechanics
  • Rehabilitation Engineering
  • Human Strength Measurement

Background:

  • Assessing isometric strength is crucial for understanding functional capacity in various populations, including those with paraplegia.
  • Existing methods for measuring isometric strength may lack versatility, accuracy, or affordability.
  • There is a need for a reliable system to measure isometric strength in diverse work space environments.

Purpose of the Study:

  • To develop and validate a three-dimensional Computerized Isometric Strength Measurement System (CISMS).
  • To assess the system's reliability and accuracy in measuring isometric pull and push strengths.
  • To evaluate the system's applicability for both paraplegic and able-bodied populations.

Main Methods:

  • The study utilized a three-dimensional Computerized Isometric Strength Measurement System (CISMS).

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  • Key components included an extendable arm, vertical track, rotating platform, force transducer, stability sensors, and computerized data interface.
  • The system was tested on paraplegic individuals and seated/standing able-bodied populations for various isometric strength measurements.

    • Main Results:

    • The CISMS demonstrated reliable and accurate measurement of isometric pull and push strengths, with results accurate within 2N for aligned forces.
    • The system proved versatile, safely and comfortably measuring strengths for paraplegics and able-bodied individuals in different postures.
    • The instrument met criteria for versatility, safety, comfort, ease of operation, and durability.

    Conclusions:

    • The CISMS is a versatile, safe, comfortable, and durable instrument for accurately measuring isometric strength.
    • The system is affordable (approx. $1,500 USD) and suitable for comparative studies across different populations.
    • The CISMS provides a reliable tool for assessing isometric strength in work spaces for both clinical and research applications.