Evaluation of variability of ground reaction force in balance of children with intellectual disabilities.
Oral Presentation
Paper ID : 1803-SSRC
Authors
1ندارم
2گروه رفتار حرکتی دانشگاه آزاد واحد همدان
3گروه بیومکانیک ورزشی، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران.
Abstract
Abstract:
Introduction: The evaluation of balance in children has been a topic of interest for researchers. However, there has been relatively limited investigation into the variability and irregularity of ground reaction forces in children with mild intellectual disabilities. This study aimed to assess the variability and irregularity in the balance performance of educable intellectually disabled children aged 8 to 13 years.
Methods: This descriptive study included 16 intellectually disabled girls and 17 age-matched typically developing children, ranging in age from 7 to 13 years. Balance variables, including ground reaction forces in the vertical, mediolateral, and anteroposterior components, were evaluated using a Kistler force plate during both quiet standing and tandem standing on stable and unstable surfaces. The forces were normalized based on the participants' body weight. Data irregularity was assessed using the multivariate entropy method. Statistical analysis was conducted using three-way analysis of variance (ANOVA) with a significance level of p < 0.05.
Results: The intellectually disabled children exhibited significantly higher ground reaction forces and irregularity in the anteroposterior and mediolateral directions during standing on stable and unstable surfaces compared to typically developing children (p < 0.05). Moreover, changes in foot position from quiet standing to standing on an unstable surface had a greater impact on irregularity.
Conclusion: Tandem stance demonstrated the highest irregularity among the balance conditions assessed. Increased irregularity in posture was associated with a higher risk of falls. The findings suggest that balance, particularly in challenging conditions, is influenced by cognitive functions in individuals with intellectual disabilities.
Introduction: The evaluation of balance in children has been a topic of interest for researchers. However, there has been relatively limited investigation into the variability and irregularity of ground reaction forces in children with mild intellectual disabilities. This study aimed to assess the variability and irregularity in the balance performance of educable intellectually disabled children aged 8 to 13 years.
Methods: This descriptive study included 16 intellectually disabled girls and 17 age-matched typically developing children, ranging in age from 7 to 13 years. Balance variables, including ground reaction forces in the vertical, mediolateral, and anteroposterior components, were evaluated using a Kistler force plate during both quiet standing and tandem standing on stable and unstable surfaces. The forces were normalized based on the participants' body weight. Data irregularity was assessed using the multivariate entropy method. Statistical analysis was conducted using three-way analysis of variance (ANOVA) with a significance level of p < 0.05.
Results: The intellectually disabled children exhibited significantly higher ground reaction forces and irregularity in the anteroposterior and mediolateral directions during standing on stable and unstable surfaces compared to typically developing children (p < 0.05). Moreover, changes in foot position from quiet standing to standing on an unstable surface had a greater impact on irregularity.
Conclusion: Tandem stance demonstrated the highest irregularity among the balance conditions assessed. Increased irregularity in posture was associated with a higher risk of falls. The findings suggest that balance, particularly in challenging conditions, is influenced by cognitive functions in individuals with intellectual disabilities.
Keywords