Document Type : Original Article
Ph.D., Musculoskeletal Rehabilitation Research Center, Department of Physical Therapy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
M.Sc., Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Ph.D., Department of Physical Therapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
Ph.D., Rehabilitation Research Center, Department of Rehabilitation Management, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
Introduction: Performing a secondary task while maintaining postural control can aggravate balance impairments among older individuals. The present study aimed to compare the gait harmonic ratio between faller and non-faller community-dwelling older adults.
Methods: In this cross-sectional study, 20 faller older adults (13 females and 7 males) and 20 non-faller older adults (12 females and 8 males) were recruited from the members of a retirement center. Before the trial, a medical code of ethics was granted and the written consent forms were signed by all participants. The variable, the gait harmonic ratio in medial-lateral, vertical, and anterior-posterior directions under single-task and dual-task conditions, was measured using an accelerometer.
Results: Under the single-task condition, there was no statistically significant difference between the faller and non-faller groups in any direction of gait harmonic ratio. Under the dual-task condition, the faller group revealed significantly lower harmonic ratios in medial-lateral (p < /em>=0.010) and vertical (p < /em>=0.032) directions compared to the non-faller group. However, no statistically significant difference was reported between the two groups for the anterior-posterior direction in dual-task walking.
Conclusions: The findings of the present study indicated that the medial-lateral and vertical gait harmonic ratios can considerably be affected under dual-task conditions in faller older individuals.
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