The effect of starting position in hip joints on the muscle activity of the quadriceps femoris muscle during the Reverse Nordic Hamstring Exercise evaluated using surface electromyography
التفاصيل البيبلوغرافية
العنوان:
The effect of starting position in hip joints on the muscle activity of the quadriceps femoris muscle during the Reverse Nordic Hamstring Exercise evaluated using surface electromyography
Title: The effect of starting position in hip joints on the muscle activity of the quadriceps femoris muscle during the Reverse Nordic Hamstring Exercise evaluated using surface electromyography. Objectives: The aim of this study was to determine whether a change in the initial position in the hip joints (in terms of rotation in hip joints) during the Reverse Nordic Hamstring Exercise (rNHE) will cause a change in muscle activity in every part of the quadriceps femoris muscle, which can be recorded by surface electromyography. Methods: Overall 40 participants were selected for this research. The selection was intentional due to the nature of this study and it participants represented a healthy population. They were randomly divided into two groups. All participants started by performing rNHE with a neutral position in hip joints, then (depending on the group they were members of) performed rNHE with internal or external rotation in the hip joints. Each variant of rNHE was performed 3 times and it took 3 seconds to perform this exercise (angular velocity 30 ř per second). During the exercise, the muscular activity of the rectus femoris, the medial vastus and lateral vastus muscles on both lower limbs was measured using surface electromyography. Results: The results show that a change in the starting...
