Volume 4, Issue 1 (Autumn 2017)                   jgn 2017, 4(1): 85-96 | Back to browse issues page

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The effect of time of day on static and dynamic balance among elderly men with morning habitual chronotype. jgn 2017; 4 (1) :85-96
URL: http://jgn.medilam.ac.ir/article-1-246-en.html
Abstract:   (4284 Views)
Abstract
Introduction and Objectives: According to the past studies, balance dysfunction may increase the risk of injury and falling among elderly. Several studies have examined factors that influencing balance acuity; however, the impact of different hours of the day on performance of this function is unknown. The purpose of this study was to evaluate the effect of 2 different time of day on the accuracy of the static and dynamic balance among elderly men of Kerman.
Materials and Methods: 15 elderly men with an average age of 68.09 ± 6.34 years old, height 171.23 ± 6.99 cm and weight 75.12 ± 10.54 based on inclusion and exclusion criteria of the study were selected between 60 participant as subjects of study. After they filled the chronotype questionnaire all of them were tested by stork test and time up/go test for static and dynamic variables evaluations at 2 different times of day(morning:7.30 and afternoon:17), and for comparing data variances in different times repeated measures ANOVA has been used.
Results: Despite the different records at different times of day and also decreasing in afternoon balance grades, there was no statistically significant difference in static and dynamic balance in different times of day.
Conclusion: According to the results of this study, it appears that the accuracy of balance function of the elderly men with morning habitual chronotype is not affected by circadian rhythm, so, there are no differences in the risk of injury and falling among elderly men due to balance dysfunction while performing physical activities in different hours of day and night. but it is better for the elderly that pay attention more to extrinsic falling factor such as surface of walking track at the end of the day.
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Type of Study: Research | Subject: Special
Received: 2017/10/17 | Accepted: 2017/12/6 | Published: 2017/12/16

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