چکیده:
هدف: هدف از تحقیق حاضر، مقایسه دو مدل وضعیت قرارگیری نشانگرها جهت بررسی زاویه پشت پا در افراد با پای طبیعی طی مراحل مختلف فاز استقرار راه رفتن در حالت با و بدون استفاده از کفش بود.
روشها: تعداد 15 نفر از دانشجویان پسر دانشگاه بیرجند بهصورت هدفمند و بر اساس شاخص افت استخوان ناوی انتخاب شدند. پس از قرارگیری نشانگرها با استفاده از مدلهای Clarke و همکاران و Nigg، بهطور همزمان بر روی پا، اطلاعات زاویه پشت پای آزمودنیها با استفاده از سیستم ثبت تصاویر دوبعدی از نمای پشت (دوربین پاناسونیک)، حین راه رفتن با سرعت 1/7 متر بر ثانیه بر روی تردمیل در دو وضعیت با و بدون کفش جمعآوری شد. جهت تجزیهوتحلیل آماری دادهها از آزمونT مستقل در سطح (0/05 p≤)، استفاده شد. یافتهها: نتایج نشان داد که بین مقدار زاویه پشت پای آزمودنیها درنتیجه بررسی دو مدل نشانهگذاری Clarke و Nigg در هر دو وضعیتهای با و بدون استفاده از کفش طی فاز استقرار راه رفتن اختلاف معنیداری وجود دارد (0.001 p≤). نتیجهگیری: با توجه به اختلاف مشاهده شده در مقدار زاویه پشت پای آزمودنیها بر اساس دو مدل مورد بررسی، توجه به ویژگیهای هر مدل در هنگام بررسی کینماتیکی زاویه پشت پا، امری ضروری به نظر میرسد.
Objective: The purpose of this study was to compare the two models of marker placement for identifying of rear foot angle in normal people with and without shoes during the different stage of stance phase of walking.
Methods: Fifteen male students in Birjand University were selected based on Navicular Drop Index. After marker placement based on Clarke and Nigg models، the rear foot angle were recorded with two-dimensional analysis (Panasonic Camera) from behind position while subjects walked with 1.7 m/s on a treadmill with and without shoes. For statistical analysis، independent samples t-test was used (p≤0.05).
Results: The Results showed a significant difference in rear foot angle during the stance phase between the two models of Clarke and Nigg during walking with and without shoes (p≤0.001).
Conclusion: Based on the results of the present study، due to their specific features care must be considered when using any of these two models to investigate the angular kinematics of the foot.
Objective: The purpose of this study was to compare the two models of marker placement for identifying of rear foot angle in normal people with and without shoes during the different stage of stance phase of walking.
Methods: Fifteen male students in Birjand University were selected based on Navicular Drop Index. After marker placement based on Clarke and Nigg models، the rear foot angle were recorded with two-dimensional analysis (Panasonic Camera) from behind position while subjects walked with 1.7 m/s on a treadmill with and without shoes. For statistical analysis، independent samples t-test was used (p≤0.05).
Results: The Results showed a significant difference in rear foot angle during the stance phase between the two models of Clarke and Nigg during walking with and without shoes (p≤0.001).
Conclusion: Based on the results of the present study، due to their specific features care must be considered when using any of these two models to investigate the angular kinematics of the foot.