The Effects of Observational and Physical Practices on Electromyography Characteristics of Main Active Muscles in Badminton High Serve

The purpose of the present study was to determine the effects of physical and observational practices on electromyography features of active muscles in high badminton serve. 30 nonathletic girl students (age 18 – 24 years) randomly assigned to tree physical, observational and combination groups after pre-test. Surface electromyography was done from biceps, triceps and middle part of the deltoid, in the observational group during and in all groups before and after 4 sessions practice. A mixed model of variance analysis was used to analyze data. There was significant decrease between pre and posttest in activity time, mean and peak normalized activity of biceps and deltoid muscles. At neurophysiology point of view, observation will activate a mirror mechanism that leads to facilitation of movement for imitating act.