CHARACTERISTICS OF HAMSTRING ELECTROMYOGRAPHIC ACTIVITY AND BREAK-POINT ANGLE DURING NORDIC HAMSTRING EXERCISE AT DIFFERENT ANKLE POSITIONS

Authors

Taspol Keerasomboon, College of Sports Science and Technology, Mahidol UniversityFollow
Parunchaya Jamkrajang, College of Sports Science and Technology, Mahidol University
Weerawat Limroongreungrat, College of Sports Science and Technology, Mahidol University
Thammanunt Chrunarm, College of Sports Science and Technology, Mahidol University
Norikazu Hirose, Faculty of Sport Sciences, Waseda University

Category

Clinical Biomechanics

Document Type

Paper

Abstract

To compare the electromyographic (EMG) activity of the biceps femoris long head (BFlh), and semitendinosus (ST) muscles during the Nordic Hamstring Exercise (NHex) while setting the ankle joint positions at plantar flexion, dorsiflexion (neutral), and dorsiflexed (neutral) position with support. Male volunteers randomly performed the following exercise: NHex with ankle dorsiflexion (DF), NHex with ankle dorsiflexion with sole support (DFS), and NHex with ankle plantarflexion (PF). The BFlh and ST EMG activities were measured. A repeated measures ANOVA was performed to compare the EMG activity during NHex with the ankle variations. The results showed that EMG activity was significantly higher during PF (p < 0.05) compared to DF and DFS for the BFlh in the dominant leg. This study revealed that NHex activated higher BFlh activity in PF than in DF and DFS.

Recommended Citation

Keerasomboon, Taspol; Jamkrajang, Parunchaya; Limroongreungrat, Weerawat; Chrunarm, Thammanunt; and Hirose, Norikazu (2024) "CHARACTERISTICS OF HAMSTRING ELECTROMYOGRAPHIC ACTIVITY AND BREAK-POINT ANGLE DURING NORDIC HAMSTRING EXERCISE AT DIFFERENT ANKLE POSITIONS," ISBS Proceedings Archive: Vol. 42: Iss. 1, Article 127.
Available at: https://commons.nmu.edu/isbs/vol42/iss1/127