THE EFFECT OF PHYSICAL EXERCISE WITH IRON AND WITHOUT IRON ON HEMOGLOBIN CONTENT AND MAXIMUM AEROBIC CAPACITY

This study aims to analyze how physical exercise with iron and no iron intake affect the hemoglobin level and maximum aerobic capacity. The hemoglobin level and maximum aerobic capacity will actually be affected either by iron intake or by physical exercises. The population is the students ofFaculty of Sports Science Universitas Negeri Padang, Sports Coach program class of 2015/2016, and were registered in the semester of July - December 2017. The samples are 30 male students. The study was conducted at the Fitness Laboratory of Faculty of Sports Science Universitas Negeri Padang. The treatments of the research are in the form of physical exerciseswhich are circuit training and HIIT for 16 times exercises, then giving Ferizz brandiron supplements in tablet. The instruments to measure hemoglobin levels are using the hemoglobin testing system, quik-check, and Bleep Test to measure maximum aerobic capacity. Data analysis using t test and anova.The results show that all hypotheses proposed in this research are acceptable; p <α 0.05. Thus it is expected that this research is useful for interested parties, especially in order to improve the physical ability of athletes, so that maximum achievement in every competition can be reached.