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Dinámica de la Relación Potencia-Duración Durante el Ejercicio Intermitente en Deportes de Equipo
Matthew I Black1, James A Lewis1, Yujie Liu1
1Public Health and Sports Science, University of Exeter Medical School, St Luke's Campus, Exeter, UNITED KINGDOM.
Medicine and science in sports and exercise
|December 23, 2025
Resumen
El ejercicio intermitente de alta intensidad no cambia la potencia crítica (CP) ni la W
Área de la Ciencia:
- Fisiología del Ejercicio
- Ciencia del Deporte
- Rendimiento Humano
Sus antecedentes:
- La relación potencia-duración es crucial para comprender el rendimiento en el ejercicio de resistencia.
- El modelo de balance de W' (W'BAL) se utiliza comúnmente para predecir la capacidad de ejercicio.
- Los atletas de deportes de equipo realizan ejercicio intermitente intenso, lo que afecta las respuestas fisiológicas.
Objetivo del estudio:
- Investigar los efectos del ejercicio intermitente específico de deportes de equipo en la potencia crítica (CP), W' y la cinética de reconstitución de W' (W'REC).
- Evaluar la precisión del modelo W'BAL en la estimación del balance de W' durante y después del ejercicio.
- Determinar si las variables fisiológicas explican los cambios inducidos por el ejercicio en la relación potencia-duración.
Principales métodos:
- La CP, W' y W'REC se midieron utilizando un protocolo de prueba repetida de esfuerzo máximo.
- La prueba implicó esfuerzos de 3 minutos y 2 minutos de esfuerzo máximo separados por 90 segundos.
- Las mediciones se tomaron en condiciones de reposo (control) y después de pruebas de sprint intermitente (IST) de 40 minutos y 80 minutos.
Principales resultados:
- La CP y la W'REC no cambiaron después de 40-IST y 80-IST en comparación con el control.
- La W' se redujo significativamente después de 40-IST y 80-IST.
- El modelo W'BAL predijo con precisión el balance de W' después de 40-IST, pero lo sobreestimó después de 80-IST.
Conclusiones:
- La potencia crítica y la cinética de reconstitución de W' son resistentes al ejercicio intermitente.
- La W' se agota por el ejercicio intermitente, con una variabilidad individual significativa en los cambios de la relación potencia-duración.
- La aplicabilidad del modelo W'BAL al rendimiento del ejercicio intermitente requiere una cuidadosa consideración debido a una posible sobreestimación.
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