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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.
Background:
The reliability of a triaxial accelerometer in measuring the head excursion during typing task among occupational typists has not been reported so far.
Objective:
This study aimed to investigate the intra-rater reliability of triaxial accelerometer measurement of head excursion.
Methods:
The triaxial accelerometer measurements were taken to measure head excursion of 8 participants typing in the computer. The intra-rater reliability such as intraclass correlation coefficient, standard error of measurements and coefficient of variation was calculated. The Bland-Altman plot was performed to strengthen the study result.
Results:
The analysis of the results showed that the intra-rater reliability of triaxial accelerometer was high with intraclass correlation coefficient (2,1) of 0.986, standard error of measurements (1.05 Hz) and coefficient of variation (3.2%) for two trials of measurements. The Bland-Altman reported an acceptable agreement between the two measurements taken using the triaxial accelerometer to measure head excursion.
Conclusions:
The triaxial accelerometer is a simple, objective and useful technology to measure head excursion among the occupational typists.
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