الفهرس 
Effect of different lumbar lordotic angles on dynamic postural stability in young adults
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Abstract
Background:Lumbar lordosis is a key component in maintaining the balance.Improper postural alignment and excessive curvature of the spine such as lordosis and kyphosis have a negative influence on our balance system. Objective:This study was conducted to investigate the effect of different lumbar lordotic angles on dynamic postural stability and limits of stability in young adults.Subjects: 100 healthy malesassigned into two equal groups according to lumbar lordotic angle (LLA);group (A) with a mean LLA± SD of 50.38{u00BA} ± 4.34{u00BA}.Their mean ± SD age and BMI were 21.48± 1.52 years, and 22.83 ± 1.77 kg/m² respectively.group (B)with mean LLA± SD of 66.89{u00BA}± 4.03{u00BA}also, mean ± SD age and BMI were 21.34 ± 1.4 years and 22.5 ± 1.57 kg/m² respectively.Methods: X-ray was done to measure the LLA using Cobb{u2019}s angle method and BiodexBalance System to assess dynamic postural stability and limits of stability. Results: MANOVA test revealed that there was a significant effect of LLA on dynamic postural stability andlimits of stability (p=0.0001).There was a significant increase in the OSI, APSI and MLSI of the group B compared to groupA(p{u2264}0.05). There was a significant decrease in the limits of stability of the group B compared to group A (p=0.0001). Conclusion:It was concluded that the difference in LLA had an effect on dynamic postural stability and limits of stability in young adults