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Khalil, A. A., C. L. Docherty, S. M. Elhafez, and A. G. Mattar, "Validity and reliability of the Arabic version of the Identification of Functional Ankle Instability questionnaire (IdFAI-Ar) in college-aged population.", Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine, vol. 49, pp. 250-254, 2021. Abstract

OBJECTIVES: The aims of this work are to culturally adapt the Identification of Functional Ankle Instability questionnaire (IdFAI) into Arabic language and to examine its psychometrics.

DESIGN: Cross-sectional study.

SETTING: This research took place at Cairo University in Egypt.

PARTICIPANTS: Twenty eight college-aged students participated in the translation and cultural adaptation, while another 86 college-aged students participated in the measurements (validity and reliability).

MAIN OUTCOME MEASURES: The original IdFAI was translated into Arabic language using standard guidelines. The Arabic version of the IdFAI (IdFAI-Ar) and the Arabic version of the Lower Extremity Functional Scale (LEFS-Ar) were applied to 86 college-aged students with and without functional ankle instability. The IdFAI-Ar was tested on two occasions with an interval of one week to investigate its psychometrics.

RESULTS: The IdFAI-Ar had a moderate correlation with LEFS-Ar and a strong correlation with ankle status classification. The reliability and internal consistency were excellent. The accuracy, sensitivity, and specificity were 0.91, 0.80, and 0.99 respectively.

CONCLUSION: The IdFAI-Ar has high validity and reliability. It can be used in clinical and research practices as a region-specific tool to discriminate between participants with and without functional ankle instability in the Arabic-speaking countries.

Abdelraouf, O. R., A. A. Abdel-aziem, A. A. Ahmed, N. S. Nassif, and A. G. matar, Backward walking effects on activation pattern of leg muscles in young females with patellofemoral pain syndrome, , 2019. backward_walking._2019.pdf
Hamada., A., D. Masaad, Fahim, M., Abd-elsamea, G., A. Yosef, and A. Matar, "Dynamic plantar pressure and ground reaction force during pregnancy: A prospective longitudinal study", . Cogent Engineering ,, vol. 6: , pp. 1602969., 2019.
Omran, N., A. Yosef, Hamada., A., A. Matar, and D. Osman, "Effect of Forward Head Posture on Temporomandibular Joint Proprioception in Post-puberatal Females: an Observational Study", Fizjoterapia Polska (polish journal of physiotherapy, vol. 2, issue (19) , pp. 142-146, 2019.
Elsayyad, L. K., A. G. Matar, A. A. Abdel-aziem, and S. M. Elhafez, "ECCENTRIC AND CONCENTRIC TORQUE OF THE LUMBAR AND HIP EXTENSORS IN FEMALES WITH LOW BACK PAIN ", International Journal of Physiotherapy and Research, vol. Vol 5(6):, pp. 2545-51, 2017.
Ibrahim, M. S., A. G. Mattar, and S. M. Elhafez, "Efficacy of virtual reality-based balance training versus the Biodex balance system training on the body balance of adults.", Journal of physical therapy science, vol. 28, issue 1, pp. 20-6, 2016. Abstract

[Purpose] This study investigated efficacy of virtual reality (VR)-based balance training on enhancing balance and postural reactions of adults as a low-cost new modality compared to the established Biodex Balance System (BBS). [Subjects] Thirty normal adults of both genders were divided randomly into two equal-sized experimental groups of 15: BBS balance training and VR balance training. [Methods] The training programmes were conducted in 12 sessions, three 15-min sessions per week. The Nintendo(®) Wii Fit Plus (NWFP) and its balance board were used to train of the VR group. Each participant answered a questionnaire concerning usability, enjoyment, balance improvement, and fatigue at the end of the training programs. [Results] The study found a significant increase the measure of mean overall balance (OLB) in both groups. No significant difference was found between the groups, but a significant decrease in the mean balance-test time was found for both groups, with no significant difference between the two training methods. The VR programme was rated highly enjoyable by 81.8% of the group. [Conclusion] The Wii Fit Plus system with the balance board as a new VR balance-training technique, can be considered an effective and enjoyable tool for the training of adults' body balance.