Author(s): Bagus Aryatama, Muchsin Doewes, Sapta Kunta Purnama and Agus Kristiyanto

Abstract:
This research aims to generalize speed measuring instrument based on accelerometer which is proper to measure speed of 100 m run. This study is research and development by adopting the steps: (1) introduction study, (2) first product design, (3) validation and revision design (step I), (4) validation and revision design ( step II), (5) effectiveness test, (6) final production. The subject is the athlete of student activity units of Yogyakarta State University (YSU) amount of 9 athlete. The instrument is using questionnaire for athletics expert, media expert, and respondent. The technique of analyzing data is descriptive qualitative and quantitative by using significance level 5%. The result of this research is speed measuring instrument based on accelerometer, which is developed effectively to measure the speed and run acceleration 100 meter and then proper to use as alternative instrument to measure speed of 100 m run. The instrument output is data of time, speed, and acceleration in graphics.

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