نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مدیریت و بیومکانیک ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، اردبیل، ایران.
2 گروه فیزیولوژی ورزشی، دانشکده علوم تربیتی و روانشناسی، دانشگاه محقق اردبیلی، اردبیل، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Aims: Foot overpronation is one of the most critical factors that cause musculoskeletal injuries and lead to greater mechanical loads in the lower limb structure. Sand is an unstable and unpredictable surface that has particular importance in human movement mechanics. The purpose of this study was to investigate the effect of sand surface training on directed and general co-contraction of ankle joint muscles in individuals with foot overpronation during running.
Methods: The present study was a randomized clinical trial type. Statistical samples of the present study included 15 males with foot overpronation in the control group and 15 males with foot overpronation in the intervention group. Individuals in the intervention group performed a sand surface training program consisting of continuous jogging, striding, bounding, galloping, and short sprints for 8 weeks. Tibialis anterior and gastrocnemius medialis muscles activity was evaluated by an 8-channel electromyography system with a surface electrode during running. A two-way ANOVA test was used for statistical analysis at the significant level P<0.05.
Results: The results demonstrated greater ankle-directed co-contraction in the push-off phase during post-test compared with the pre-test in the intervention group during training on sand (P=0.040). Other components of directed co-contraction in the different stages and general co-contraction in all phases did not demonstrate significant differences after sand training (P>0.05).
Conclusion: It seems greater ankle joint directed co-contraction in the push-off phase after training protocol reduced the risks of lower limb injuries and ankle instability in individuals with foot overpronation in this phase.
کلیدواژهها [English]