Sp, thanks for the response, but what they are doing is plometricaly based different psychodinamics but the same princable. Plyometrics cover a wide field. Theres the ones that as a rule give long term injuries, or another type implementing dynamic stretch routines with touch. Which I with the help of The institute of Sport hope to have on the market this year.They tell me it will put Sheffield in the forefront of Sports Science lets see, when all the dots are covered Saddos will be 1st with the news