Volleyball Serving Ability Training Model for Adolescents in Jayapura City

The phenomenon that is still found in junior high schools in the city of Jayapura is the lack of literature on basic volleyball movement skill training models. So a structured training model is needed in learning. This research is a type of model development research or what is often known as Research and Development (R&D). The characteristic of this research is that it focuses on service learning and focuses on the basic motion components of the service itself. The effectiveness test in this research uses the t-test, which measures service skills before and after being given this service learning model. The approach used is a quantitative approach, namely measuring volleyball service skills with a research plan in the form of the one group pretest-posttest design. The data obtained is based on the average of the 947 pretest scores. This is the score obtained before being given training using the model created. After the initial test was carried out, the application of the model was carried out using a training program that was created so that after being tested again, its serviceability obtained a post-test score of 1331. Based on the results of field trials and discussion of research results, several conclusions were obtained, namely: 1. There are 18 (Eighteen) Volleyball Serving Skill Training Models for Beginner Athletes of Middle School Age. 2. The developed Volleyball Serving Ability Training Model can improve volleyball Serving ability efficiently and effectively.