Irawati, Teti2013-06-172013-06-172013-06-17http://repository.unri.ac.id:80/handle/123456789/3701The Comparison Of The Influence Of Dip Exercise And Supra Force Exercise To Arm And Shoulder Muscle Strength In Laskar Riau Pekanbaru Softball ClubThis research was conducted in Laskar Riau Pekanbaru Softball Club, due to the lack of the arm and shoulder muscle possessed. Therefore researcher intended to study the club. Data was obtained and collected from pre test and post test using Expanding Dynamometer. Before and after the Dip Excercise and the Supra Force Exercise were done to see the differences in the comparison of the effects of Dip Exercise and Supra Force Exercise to Arm and Shoulder Muscle Strength in Boys Laskar Riau Pekanbaru Softball Club. This research was experimental research. It used experimental and statistical data analysis helped by hypothetical research. The population in this reseach was Laskar Riau Softball Club in Rumbai softball field, which consisted of 20 males. The result of the analysis showed that there was a significant effect of Dip exercise and Supra Force exercise (X) to the arm and shoulder muscle strength (Y). According to the result of t test, it can be concluded that: 1. t_obt was 2.856 and t_crit was 2.262, 2. t_obt was 2.338 and t_crit was 2.262, 3. t_obt was 2.1608 and t_crit was 2.101. Hence t_obt > t_crit thus it can be concluded that there was a significant effect of Dip exercise and Supra Force exercise to arm and shoulder muscle strength in Boys Laskar Riau Pekanbaru Softball Club, the average score from group A was 15,4 and group B was 8,2, hence Dip exercise had more significant effect than Supra Force exerciseen-USDip Exercise and Supra Force Exercisearm and shoulder muscle strengthstudent Paper Post Degree