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A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
Published on: September 21, 2017
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Is a triaxial accelerometer a reliable device to measure head excursion?
Subramaniam Ambusam1, Baharudin Omar2, Leonard Joseph1
1School of Rehabilitation Sciences, Wellness and Rehabilitation Research Niche Group, Faculty of Health Science, Universiti Kebangsaan Malaysia, Malaysia.
Summary
Triaxial accelerometers reliably measure head excursion in occupational typists. This simple technology offers objective data for assessing typing-related movements.
Area of Science:
- Biomechanics
- Occupational Health
- Wearable Technology
Background:
- Head excursion during typing tasks is a relevant factor in occupational health.
- Previous research has not established the reliability of triaxial accelerometers for this measurement.
Purpose of the Study:
- To determine the intra-rater reliability of triaxial accelerometer measurements for head excursion.
- To assess the feasibility of using this technology for occupational typists.
Main Methods:
- Eight participants performed typing tasks while wearing a triaxial accelerometer to measure head excursion.
- Intra-rater reliability was assessed using intraclass correlation coefficient (ICC), standard error of measurements (SEM), and coefficient of variation (CV).
- Bland-Altman plots were utilized to analyze measurement agreement.
Main Results:
- High intra-rater reliability was observed, with an ICC(2,1) of 0.986.
- The SEM was 1.05 Hz and the CV was 3.2%, indicating consistent measurements.
- Bland-Altman analysis confirmed acceptable agreement between repeated measurements.
Conclusions:
- Triaxial accelerometers provide a reliable and objective method for measuring head excursion in occupational typists.
- This technology is a simple and useful tool for ergonomic assessments in computer-based work environments.
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