Effect of Aquatic and Land- base Plyometric Exercise on Selected Biomechanical Parameters of Butterfly Swimming in Elite Male Adolescent Swimmers10-14 years

Introduction and The swimming start is very important for achieving better results in competitions. The Purpose of this study was to compare the effects of two plyometric training techniques both in aquatic and on land in two start techniques (grab and track) of butterfly swimming in Elite male adolescent Swimmers.
20 elite male swimmers divided into two groups of plyometric exercises in water and land-based. Swimming performance variables including; anaerobic power of hands and legs, 25 meter swimming record, The time of contact of head with water and the time of keeping movement in water, Flying distance from the starting point to the end point of contact with water and the distance of continuing movement after entering the water using both start techniques, the number of movements of hands and legs in 13 meters butterfly swimming without start and glide. Data analysis was performed with MANOVA test.
Significant difference was seen in the mean time of contact of head with water in both start techniques (grab and track) of Butterfly swimming; in addition, there is significant difference in mean number of hand movement and leg movement in butterfly swimming and the number of hand and leg movement in full 13 meter butterfly swimming after polymeric exercise in two groups.
Discussion and According to the findings of this study, using plyometric training program led to an increase and improvement in the measured parameters, and use these exercises to improve start swimming recommended.