Ardian, R., Prasetyo, Y., Sulistiyono, S., Arjuna, F., Suryadi, D., Dewantara, J., Septianto, I. y Subarjo, S. 2024. Article RETRACTED due to manipulation by the authors Aplicación de Métodos de Entrenamiento en Circuito para Mejorar la Condición Física del VO2max: Un Estudio Experimental en Atletas de Balonmano (Application of Circuit Training Methods to Improve VO2max Physical Condition: An Experimental Study on Handball Athletes): Article RETRACTED due to manipulation by the authors. Retos. 54, (may 2024), 660–666. DOI:https://doi.org/10.47197/retos.v54.103377.