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Purpose: The purpose of this study was to investigate the health-related physical fitness and learning satisfaction of Bunun junior high school students before and after the intervention of the Fitness Education Model. Differences between different grades and genders were also examined. Method: The participants were 60 Bunun junior high school students (15 in 7th grade, 21 in the 8th, and 24 in the 9th; 33 males and 27 females) in Xingxing Junior High School in Taitung County. The intervention of the Fitness Education Model was implemented in 20 sessions of physical education over a period of 10 weeks. A quasi-experimental design was adopted. The research instrument was Learning Satisfaction Questionnaire. Data were analyzed using methods including descriptive statistics, independent-sample t-test, dependent-sample t-test, one-way ANCOVA, and post-hoc comparison. Results: (1) The participants’ health-related physical fitness slightly improved after the intervention of the Fitness Education Model; a significant improvement was observed in overall BMI of the participants and male students’ cardio-respiratory endurance; no significant difference was observed in flexibility, muscular power, muscle endurance or female students’ cardio-respiratory endurance; overall, the participants’ flexibility, muscular power, and muscle endurance improved. (2) After the intervention, there were differences in cardio-respiratory endurance between genders across different grades (7th, 8th, and 9th grades); among male students, those in the 9th grade had poorer cardio-respiratory endurance than those in the 8th grade; among female students, those in the 8th grade had poorer cardio-respiratory endurance than those in the 7th and 9th grades; there were gender differences in muscular power and cardio-respiratory endurance across different grades before and after the intervention. (3) After the intervention, gender differences in BMI were observed; the BMI improvement was greater among male students than among female ones; male students showed a significant improvement in cardio-respiratory endurance. (4) In learning satisfaction, there was no significant difference before and after the intervention. The satisfaction remained high across all the dimensions, with the score for the “teacher’s instruction” dimension being the highest, followed by that for the “interpersonal relationship” dimension. (5) In learning satisfaction after the intervention, the differences between grades were significant. The scores for “overall satisfaction”, “teacher’s instruction”, “administrative support”, and “interpersonal relationship” were higher among students in the 7th grade than students in the 8th and 9th grades. (6) The gender difference in learning satisfaction was not significant both before and after the intervention. Conclusion: After the 10-week 20-session intervention of the Fitness Education Model, the Bunun junior high school students did not show better BMI and cardio-respiratory endurance, but their flexibility, muscle power, muscular endurance, and satisfaction with “teacher’s instruction”, “environment and facilities”, “administrative support”, and “interpersonal relationship” all improved, albeit not to the level of significance. Hence, the intervention of the Fitness Education Model in physical education was helpful for the Bunun junior high school students.
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