عنوان مقاله [English]
Background and Aim: Falling is a major health problem among elderly that has significant affect their health and life
quality, but it can be possibly prevented by development of muscle strength. The purpose of this study was to investigate
the relationship between strength of spine extensor muscles with dynamic balance and fear of falling in elderly people.
Materials and Methods: 68 elderly men and woman with mean age of 70±5.43 years, height of 157.29±8.59 cm and
weight of 70.64±9.63 kg were randomly recruited among volunteers. Dynamometer, biodex stability system and modified MFES questionnaire were used to assess strength of spine extensor muscles, dynamic balance and fear of falling
respectively. This research was an empirical and causal relationship study, and to elicit the results, Pearson correlation
coefficient was used and significance level was considered if pcorrelation between strength of spine extensor muscles and dynamic balance in anterior-posterior direction (p=0.0001), while no significant correlation was shown between strength of spine extensor muscles and dynamic balance in media-lateral direction (p=0.29). In addition, there was a significant positive correlation between strength of spine extensor muscles and fear of falling (p=0.01). Conclusion: Strength of spine extensor muscles is an effective factor to maintain balance at anterior-posterior direction and fear of falling
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