جستجوی مقالات مرتبط با کلیدواژه « پرونیشن مچ پا » در نشریات گروه « پزشکی »

Aims: The aim of this research was to investigate the timing factors of ACL agonist and antagonist muscles in athletes with ankle pronation deformity.
In the present research, 15 athletes with an increased pronation of ankle and 15 normal athletes were purposefully selected. Electromyographic signals were recorded by using surface electrode from four muscles (rectus femoris, medial hamstring, lateral hamstring, vastus medialis, vastus lateralis and Medial gastrocnemius). The MANOVA method was used as a statistical analysis to investigate muscle timing of jump-landing between the two groups.
Results showed that there is a significant difference between the two groups in muscle timing of rectus femoris (p=0/007) and vastus lateralis (p=0/002). There is also no significant difference between the muscle timing of the other muscles of the two groups (p≥0.05).
Increased pronation of the ankle along with change in muscle timing of rectus femoris and vastus lateralis muscles can be a risk factor in ACL injury incidences.

Mechanical alignment of lower limb has effect on knee joint stability of athletes. Researches show high pronation of ankle is effective in happening anterior cruciate ligament (ACL) injury. So the objective of this research is investigating knee flexion angle and Quadriceps to Hamstring Co-activation in athletes with ankle pronation deformity and healthy. In this research 15 athletes with increased pronation of ankle and 15 normal athletes selected purposeful. Electromyographic signals and knee flexion angle recorded with using surface electrode from four muscles (rectus femoris, vastuslateralis, medial hamstring and lateral hamstring)and electro goniometer respective. Statistical analysis method of T- independent was used for investigating between variables. Results showed there is significant different between two groups in knee flexion angle (P=0/034) and quadriceps to hamstring Co-activation (P=0/001). Discussion & Increased pronation of ankle with change in quadriceps to hamstring Co-activation andknee flexion angle can be a risk factor in ACL injury incidence.