Comparison of the Electromyographic activity, Quadriceps: Hamstring coactivation ratio and strength changes of dominant leg muscles in collegiate football and volleyball players during different forms of exercises
Journal Title: Biology of Exercise - Year 2015, Vol 11, Issue 2
Abstract
The preliminary study was aimed to compare electromyographic (emG) activity, Quadriceps: hamstring coactivation (Q: h) ratio and 1- repetition maximum (rm) squat changes of dominant leg muscles in collegiate football and volleyball players during different forms of exercises. Surface emG analysis was carried out in 24 university level trained male players, football (n=12) and volleyball (n=12) while performing the following exercises: unilateral bridges, lunges, lateral step up to a 20.32 cm (8 inch) platform, quadruped arm/ lower extremity lift in the first session. The emG activities of vastus medialis obliquus (VmO) and hamstrings muscles of dominant leg of the players of both groups were recorded using Power lab emG system (lab Chart, aD instruments, ml-818, australia). On the next session, 1-rm squat tests were also performed on the same players of both groups. In footballers, the lateral step-up, lunges and quadruped arm/ lower extremity lift and in volleyball players, only lunges produced emG levels greater than 45% maximum voluntary isometric contraction (mVIC) in the VmO, which suggests that they may be beneficial for strengthening that muscle. all the exercises produced emG levels less than 45% mVIC in hamstrings in both groups of players, so they may be more beneficial for training endurance and stabilization. The study also revealed smallest Q: h coactivation ratio in all exercises in volleyball players suggesting more hamstring activity than quadriceps but in footballers, moderate Q:h coactivation ratios were obtained establishing the quadriceps dominant activation in all these exercises. The 1- rm squat testing also showed significantly greater value (p=0.00) in football players than volleyball players. The findings in this study may be used to select specific exercises to enhance a core training programme depending on the individual needs of an athlete or as per the requirement of the specific sport.
Authors and Affiliations
TanzIla Taj| Centre for Physiotherapy and Rehabilitation Sciences, Jamia Millia Islamia, New Delhi, India, Subhra ChaTTerjee (nee KarmaKar)| Centre for Physiotherapy and Rehabilitation Sciences, Jamia Millia Islamia, New Delhi, India
Keywords
Related Articles
- EP ID EP15871
- DOI http:doi.org/10.4127/jbe.2015.0093
- Views 327
- Downloads 18
Evaluation and Assessment of Leg Muscle Activity and Fatigue Accross two Popular Step Test Exercises
electromyography (emG) provides inside access to physiological and electrical responses during muscular activity. step tests [harvard step Test (hsT) and Queen’s College step Test (QCT)] appear to be simple to admini...
Effect of Swiss ball exercise program on static and dynamic balanceEffect of Swiss ball exercise program on static and dynamic balance
The research aimed to design an exercises program with Swiss ball and recognize its effect on static and dynamic balance in inter university basketball players. The researcher utilized the experimental method on a sam...
Reference Interval for Iron Profile in Male and Female Athletes
The present study is aimed to find out the reference interval for iron profile in male and female athletes. a total of 361 male athletes and 248 female athletes were volunteered to participate in the present study. athl...
Hamstring Injuries: Prevention and Rehabilitation
Objective: a review was conducted to present current views and effectiveness of prevention and rehabilitation methods of hamstring injuries. Methods: a review searching on the electronic data bases, including proques...
The differences at quality of life and loneliness between elderly people
The purpose of the present study was to examine the differences at quality of life and loneliness between elderly people. Data were collected from 180 persons aged 60 - 93 years old from Greece. Quality life was estima...