Iron deficiency, functional performance and nutritional status in healthy adolescent male athletes

Authors

  • María A. Egas-Miraglia Universidad Católica de Santiago de Guayaquil. Facultad de Ciencias de la Salud. Instituto de Investigación e Innovación en Salud (ISAIN)
  • Mariela González-Narváez 3Facultad de Ciencias de la Vida, Escuela Superior Politécnica del Litoral, Guayaquil
  • Marlon Villacis Universidad Católica de Santiago de Guayaquil. Facultad de Ciencias de la Salud. Instituto de Investigación e Innovación en Salud (ISAIN)
  • Domenica Ripalda Universidad Católica de Santiago de Guayaquil. Facultad de Ciencias de la Salud. Instituto de Investigación e Innovación en Salud (ISAIN)
  • Gustavo Montijano Universidad Católica de Santiago de Guayaquil. Facultad de Ciencias de la Salud. Instituto de Investigación e Innovación en Salud (ISAIN)
  • Cecilia Arteaga Pazmiño Universidad de Guayaquil
  • Evelyn Frias-Toral Universidad Espíritu Santo. Escuela de Medicina
  • Elena López Ruiz Universidad de Granada

DOI:

https://doi.org/10.47197/retos.v77.116553

Keywords:

Adolescents, athletes, iron deficiency anemia, nutritional status, physical performance

Abstract

Introduction: Iron deficiency is a common nutritional issue with potential impacts on physical performance, particularly in young athletes.

Aim: To analyze the relationship between iron deficiency, physical performance, and nutritional status in adolescent male athletes.

Methodology: This cross-sectional study involved 126 healthy male soccer players from two local professional clubs, divided into groups: M1≤12 (n=61) and M2> 12 (n=65). The athletes participated in training sessions six days a week. Blood tests included hemoglobin (Hb), serum iron, and ferritin levels. Physical performance was evaluated using VO2max (Course Navette Test), and nutritional status was assessed through BMI and dietary intake from Hem and non-Hem iron sources.

Results: One athlete (0.79%) was diagnosed with iron deficiency anemia (IDA); 23.02% (n=29) had ferritin levels <30 ng/mL, and 11.11% (n=14) showed signs of iron deficiency (ID). VO2max values indicated adequate performance for age: M1 = 69.17 ml/kg/min and M2 = 76.90 ml/kg/min. A high intake of Hem iron foods was recorded, with 96.90% consuming meat and 96.03% consuming poultry. A positive correlation was observed between VO2max and Hb (r=0.430, p=0.01) in M2.

Discussion: Despite the low prevalence of iron deficiency anemia, a considerable proportion of athletes showed reduced ferritin levels, indicating a subclinical risk of iron deficiency.

Conclusions: This population demonstrated iron storage deficiencies despite adequate performance levels and average weight-for-age.

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03-04-2026

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Egas-Miraglia, M. A., González-Narváez, M., Villacis, M., Ripalda, D., Montijano, G., Arteaga Pazmiño, C., Frias-Toral, E., & López Ruiz, E. (2026). Iron deficiency, functional performance and nutritional status in healthy adolescent male athletes. Retos, 77, 399-411. https://doi.org/10.47197/retos.v77.116553