الفهرس 
Effect of lumbar paraspinal muscle fatigue on ankle proprioception
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Abstract
Background: Proprioceptive information plays an important role in joint stabilization, body coordination and proper function in activities of daily living. Muscle fatigue may alter active repositioning accuracy and might have an effect on the joint function and predispose to injury. Objective: This study was conducted to investigate the effect of lumbar paraspinal muscle fatigue on ankle joint repositioning accuracy for healthy subjects in both sexes. Methods: Fifty healthy subjects of both sexes aging from 18-22 years and body mass index from 20-25 kg/ m² were participated in this study. They were recruited from the students of faculty of Physical therapy Cairo university. The subjects were assigned into two equal groups; group A included 25 male subjects and group B included 25 female subjects. Ankle joint active repositioning accuracy was measured before and after lumbar paraspinal muscle fatigue for both groups using 3 pro-isokinetic Biodex system. Results: The study revealed that there was no significant difference between pre and post lumbar muscle fatigue in ankle joint active repositioning accuracy for both groups, where P-values were (0.549, 0.518) respectively, while concerning sex differences there was significant difference between males and females on ankle joint active repositioning accuracy error, where P-value was (0.019).Conclusion: Ankle proprioception was not affected by fatiguing of the lumbar paraspinal muscle