Document Type : Research articles
Authors
1 Department of Neuroscience, Faculty of Advanced Technologies in Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
2 Department of Epidemiology and Biostatistics, Occupational Environmental Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
3 1. Noncommunicable Diseases Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran 2. Department of Neurology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
4 1. Physiology-Pharmacology Department, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran 2. Physiology-Pharmacology Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
Abstract
Objectives: Motor imagery (MI) is the visualization of action without its overt performance. One of the measures of explicit MI is mental chronometry which has been applied to multiple sclerosis (MS) patients; nonetheless, the reliability and validity of this tool has been never confirmed. Therefore, the present study aimed to assess the reliability and validity of mental chronometry in MS patients.
Methods: A number of 60 MS patients who met the inclusion criteria were included in the present study via the census method. Thereafter, 20 MS patients were tested via mental chronometry based on the box and block test, as well as kinesthetic and visual imagery questionnaire-20 (KVIQ-20) in two sessions with a 10-day interval. Intra-class correlation coefficients (ICCs) were calculated to determine the test-retest reliability of mental chronometry. Pearsons correlation analysis was used to evaluate criterion validity with the KVIQ-20.
Results: The test-retest reliability for the mental chronometry was good (ICCs: visual analogue scale=0.88, mean execution and motor imagery absolute difference= 0.75, imagery duration=0.91, and execution duration=0.97). Moreover, the concurrent validity between the visual analogue scale of mental chronometry and KVIQ-20 was good.
Conclusion: As evidenced by the results of the present study, the mental chronometry based on box and block is a reliable and valid tool for the assessment of motor imagery in MS patients.
Keywords
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