Development of an E-Book-Based Flexibility Training Model for Karate

 Sports activities are considered very necessary to maintain body and physical condition amid the convenience
offered by technology and science. Currently, one of the most popular sports in Indonesia is karate. However, the lack of sources
of information and knowledge about karate training hinders the training process and possible preparation. Therefore, this study
developed a very easy e-book-based flexibility training model, which can be applied practically to increase the training power of
karate sports. The design of the research model for the development of a flexibility training e-book for karate sports will be
carried out using the Borg and Gall development research model. In full, the steps of the Borg and Gall modification
development model consist of the following ten steps: 1) preliminary research, 2) planning, 3) initial product development, 4)
limited field test, 5) revision of limited field test results, 6) wider field test, 7) broader revision of field test results, 8) operational
field test, 9) revision of operational field test results, and 10) dissemination and implementation of the final product. As a result,
the effectiveness of using e-books in flexibility training at the Lemkari dojo showed relatively improved post-test results. The
results of the pre-test and post-test flexibility through flexiometer tests in large-scale karateka trials in the "very good" category
of 32.66%, the "good" category of 67.5%, the "Medium" category of 0%, the less category of 0% and the "ugly" category of 0%.
Therefore, the flexibility training e-book for karate at Dojo Lemkari is declared very suitable to be used as a source of material
and knowledge about flexibility training for karate sports.