DIFFERENCE OF PHYSICAL FITNESS LEVEL ON SEVENTH, EIGHTH, AND NINTH GRADERS OF SMP NEGERI 1 MUNGKID IN THE ACADEMIC YEAR OF 2014/2015

This study has a purpose in investigating the differences on the physical fitness level of seventh, eighth, and ninth graders of SMP Negeri 1 Mungkid. The research was using survey method with a variable of physical fitness. The population in the study was the seventh, eighth, and ninth graders from SMP Negeri 1 Mungkid with a sample of 174 students. The sampling used simple random sampling. The data collection employed the test and measurement such as the running test for about 2.4 kilometers aimed for kids aged 13-19 years old based on Kenneth Cooper. The data were analyzed using descriptive quantitative statistical analysis in terms of percentage. The results of the study show that there is a significant difference in the physical fitness level among the seventh, eighth, and ninth graders. Seventh graders have the average of mileage for about 17.55 minutes, the eighth graders have the average of mileage for about 18.45 minutes, and the ninth graders have the average of mileage for about 21.34 minutes. It is concluded that the physical fitness levels between seventh and eighth graders have no significant difference, between the seventh and ninth graders there is a significant difference of physical fitness level, and between eighth graders and ninth graders there is a significant difference of physical fitness level. Keywords: physical fitness level, junior high school student