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KMID : 1012319980010010029
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Nutritional Sciences
1998 Volume.1 No. 1 p.29 ~ p.33
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Iron Status of Femele Athletes Involved in Aerobic Sports
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Kim Hye-Young
Lee Pil-Young
Jang Young-Ai
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Abstract
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The present study was designed to compare the nutrient intake and iron status of athletic female students majoring in aerobics (n=18) to those of age-matched(20-22 yr) sedentary controls (n=19). The athletic students were exercising regularly for 9.1±1.4 hrs/wk and the mean training period of aerobics was 2.9±0.2 years. Means of height, weight, and body mass index calculated as the Quetlet index were similar between athletic and sedentary students. However, mean body fat % of the athletic students (22.3±1.0%) was significantly lower than that of the sedentary controls (25.8±0.6%), indicating the effects of routine exercise. Mean daily iron intake was not significantly different between groups (9.9±0.7 mg vs. 10.9±0.8 mg), but much lower than the Korean RDA (18 mg/d) in both groups. Dietary calcium intake of the athletic students was significantly lower than that of the sedentary controls. Hematocrit (Hct) and hemoglobin (Hb) values were significantly lower in the athletic students than in the sedentary students (Hct : 40.0±0.7% vs. 43.8±0.5% ; Hb : 12.6±0.3g/dl vs. 14.8±0.3 g/dl). However, other iron status values such as serum iron, TIBC, and transferrin saturation were not significantly different between groups. Therefore, the low hemoglobin levels in the athletic group are probably due to plasma dilution in endurance-trained individuals. Serum ferritin level was a little lower in the athletic group, but no significant difference between groups was found. Serum triglyceride concentration in the athletic students was significantly lower than that in the control students. In conclusion the findings suggest that regular training of female athletes majoring in aerobics is associated with an increased risk of pseudoanemia due to plasma volume expansion and a decreased risk of coronary heart disease by decreasing body fat and blood lipid level.
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KEYWORD
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iron status, female athletes, sports anemia, exercise, aerobics
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