Development of Digital Based Tennis Footwork Instruments

The problem in this research is the absence of the test instrument leg movements (Footwork) in the field of learning tennis is effective, efficient and modern. The purpose of this study was to design a test instrument leg movements (Footwork) in the field of learning tennis sport that is effective, efficient, modern and can be used to support learning Footwork attennis club, or college sports. This type of research is research and development Research and Development. The stages of developing this test instrument are observation in order to see potential problems, information / data collection, product design, design validation, design improvement, product testing, product revision, usage testing, product revision, mass production. The results of this study are for expert validity. tennis court obtained an assessment percentage of 97.5%. These results indicate that according to the field tennis expert the test instrument footwork digital-basedhas the "Good / Feasible" category, while the results of the expert validation and measurement results obtained a 95% percentage of the assessment, it can be concluded that according to the test and measurement experttest instrument. footwork , this digital-basedhas a category of "Good / Feasible", and the results of the calculation of reliability using thetechnique test and, retest the r value is 0.998, so it can be said that the correlation is "high and significant", it can be concluded that thetest instrument footwork digitalbasedis good to be used as a measuring tool to measurefootworkin tennis court lessons.