Relationship Between Dietary Factors and Bodily Iron Status Among Japanese Collegiate Elite Female Rhythmic Gymnasts
| Autor: | Takahiro Yoshizaki, Kumiko Kisara, Yuki Tada, Yoshiko Ohira, Yukari Kawano, Ayaka Sunami, Yuri Yokoyama, Sakuko Ishizaki, Azumi Hida, Yuki Kokubo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Vitamin Iron metabolism disorder medicine.medical_specialty Adolescent Gymnastics Anemia Iron Nutritional Status Medicine (miscellaneous) Physiology Hematocrit 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Asian People Japan medicine Humans Orthopedics and Sports Medicine 030109 nutrition & dietetics Nutrition and Dietetics Anemia Iron-Deficiency biology medicine.diagnostic_test business.industry Transferrin saturation 030229 sport sciences General Medicine Iron deficiency medicine.disease Iron Metabolism Disorders Diet Sports Nutritional Physiological Phenomena Surgery Ferritin Cross-Sectional Studies chemistry Athletes Dietary Reference Intake Ferritins biology.protein Female Dietary Proteins business |
| Zdroj: | International Journal of Sport Nutrition and Exercise Metabolism. 26:105-113 |
| ISSN: | 1543-2742 1526-484X |
| DOI: | 10.1123/ijsnem.2015-0123 |
| Popis: | This cross-sectional study explored the prevalence of iron deficiency (ID) and associations between dietary factors and incidence of ID in female rhythmic gymnasts during preseason periods. Participants were 60 elite collegiate rhythmic gymnasts (18.1 ± 0.3 years [M ± SD]) who were recruited every August over the course of 8 years. Participants were divided into 2 groups according to the presence or absence of ID. Presence of ID was defined either by ferritin less than 12 µg/L or percentage of transferrin saturation less than 16%. Anthropometric and hematologic data, as well as dietary intake, which was estimated via a semiquantitative food frequency questionnaire, were compared. ID was noted in 48.3% of participants. No significant group-dependent differences were observed in physical characteristics, red blood cell counts, hemoglobin, hematocrit, haptoglobin, or erythropoietin concentrations. The ID group had a significantly lower total iron-binding capacity; serum-free iron; percentage of transferrin saturation; ferritin; and intake of protein, fat, zinc, vitamin B2, vitamin B6, beans, and eggs but not iron or vitamin C. The recommended dietary allowance for intake of protein, iron, zinc, and various vitamins was not met by 30%, 90%, 70%, and 22%–87% of all participants, respectively. Multiple logistic analysis showed that protein intake was significantly associated with the incidence of ID (odds ratio = 0.814, 95% confidence interval [0.669, 0.990], p = .039). Participants in the preseason’s weight-loss periods showed a tendency toward insufficient nutrient intake and were at a high risk for ID, particularly because of lower protein intake. |
| Databáze: | OpenAIRE |
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