<![CDATA[Regarding nutrition, providing proper food intake can produce optimal physical conditions and provide sufficient energy. This research aimed to prove that combining iron tablets and 1000 mg of vitamin C can increase hemoglobin levels and maximum oxygen volume in female athletes in martial arts. This research used an experimental group design by using a randomized post-test-only control group design. It used 40 female athletes divided into four groups and carried out for 12 weeks. The control group was given a placebo, treatment group one was given iron tablets three times a week, treatment group two was given 1000 mg of vitamin C three times a week, and treatment group three was given a combination of iron tablets and 1000 mg vitamin C. The results show that the mean of hemoglobin levels in the group given iron tablets is 13.23 ± 1.09 g/dL, vitamin C is 12.69 ± 0.89 g/dL, and a combination of iron tablets and vitamin C is 14.50 ± 1.40 g/dL significantly higher (p < 0.05) than the control group, namely 11.93 ± 1.08 g/dL. The average maximum oxygen volume level in the group given iron tablets is 41.24 ± 0.52 ml/Kg/minute, vitamin C is 40.58 ± 0.66 ml/Kg/min, and a combination of iron tablets and vitamin C is 43.33 ± 0.41 ml/Kg/min which is significantly higher (p < 0.05) compare to the control group’s average of 38.33 ± 0.42 ml/Kg/min. It concludes that giving iron and vitamin C tablets to female martial arts athletes can significantly increase hemoglobin levels and maximum oxygen volume. Therefore, iron and vitamin C tablets are proven to contribute to overcoming the problem of anemia in women and are able to increase the cardiovascular capacity of athletes.]]>
