Background/Problems. The problem in this research was the low level of physical fitness of female students at Senior High School (SMK) An-Nur, Padang City. This was suspected by the lack of sports activities carried out by female students—for study purposes. The research aims to see 1) the effect of aerobic exercise on female students' physical fitness, 2). Differences in physical fitness of female students with high and low exercise motivation. 3). Interaction between jogging and aerobic exercise with exercise motivation on physical fitness, 4). Differences in the physical fitness of female students in the jogging sports group and the aerobics group in female students with high exercise motivation. 5). Differences in physical fitness of female students in the jogging sports and aerobics groups in female students with low exercise motivation. Materials and Methods. The research type was experimental, using a 2 x 2 ANOVA design. This research used a purposive sampling technique, and then a motivational questionnaire test was carried out; after the motivational questionnaire data was obtained, it was divided into 5 people per group using the Matching technique to obtain a sample of 20 female students. Furthermore, the treatment was given 16 meetings (8 weeks). The tests used in this study were the initial and final, namely the physical fitness tests with the 2400-meter running tests. Results. The results showed: 1). There was no difference in the physical fitness of the jogging and aerobics groups. 2). The physical fitness of the high exercise motivation group was better than that of the low. 3). There was an interaction between jogging and aerobic exercise with exercise motivation on female students' physical fitness. 4). The physical fitness given jogging exercise was better than the aerobic exercise group in the group with high exercise motivation. 5). The physical fitness of the jogging group was lower than the aerobics group in the group with low exercise motivation. Conclusions. Based on the findings, it can be concluded that both jogging and aerobic exercise influence the physical fitness capacity of An-Nur Vocational High School students in Padang City. The benefits of research for teachers was to guide for learning and for further research was to guide in future research.
Keywords: Aerobic Sports, Motivation, Physical Fitness, Students