A Comparative Study of the Dynamic Response Speed of Two Types of Commands at dual-block Forming time in Volleyball

: ( ) ( ). (25) 2009 2010 (12) 48% . :1. ( ) .2. . :1- .2- .The paper aims at identifying the differences in dynamic response speed using the optical command in dual-block Forming time of feet movement(pulling and crossing feet); it also aims at identifying the differences in dynamic response speed using the acoustic command in dual-block Forming time of feet movement(pulling and crossing feet).The researcher uses the descriptive method, the sample is formed out of the volleyball team of Basic Education College in Mosul in (2010); the sample team consists of 12 players. The researcher concludes the following:1. No differences are there in the sense of in dynamic response speed using the optical command in forming dual-block timing of feet movement(pulling and crossing feet).2. there are some statistical differences in dynamic response speed using the acoustic command in forming dual-block timing of feet movement(pulling and crossing feet) in favour of crossing feet.Suggestions and Recommendations:1. The necessity of emphasizing the importance of the variable dynamic response speed variable which has a direct influence on the skills duty.2. the necessity of emphasizing some exercises for developing dynamic response speed using available equipments.