Apparatus and method for
population and sample
one. 122 school administrators and Head of Learning Health and Physical Education. In the west central region of 122 people, including a total of 244 people, the researchers used in the study population
2. Students at one school in the district of KPS. Nakhon Pathom province, 30 people who apply for a sample
3. Students at one school in Ratchaburi province, 80 by way of choice. Specific (Purposive Sampling) from schools with teaching boxing in high school and one year at a school in the district and outside the district. Ratchaburi Province
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