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Activación muscular de la parte superior del cuerpo específica del ángulo en flexiones en suspensión: un análisis
Yu-Chin Lin1, Tsung-Lin Chiang1, Shih-Hsuan Chan1
1Graduate Institute of Sport Coaching Science, Chinese Culture University, No. 55, Hwa-Kang Rd., Yang-Ming-Shan, Taipei City, 11114, Taiwan (R.O.C.).
BMC sports science, medicine & rehabilitation
|February 12, 2026
Resumen
Las flexiones TRX se dirigen eficazmente al pectoral mayor en inclinaciones más altas (30° a 0°). Los ángulos declinados (-30°) activan preferentemente el deltoides anterior, el tríceps braquial y otros músculos de la parte superior del cuerpo.
Área de la Ciencia:
- Fisiología del Ejercicio
- Biomecánica
- Ciencia del Deporte
Sus antecedentes:
- Los entrenadores de suspensión TRX permiten ángulos corporales ajustables para una intensidad de ejercicio variada.
- No se comprende bien el impacto de las inclinaciones corporales extremas, especialmente las posiciones declinadas, en la activación muscular de la parte superior del cuerpo durante las flexiones TRX.
Objetivo del estudio:
- Investigar cómo los diferentes ángulos corporales afectan la activación muscular de la parte superior del cuerpo durante las flexiones TRX.
- Comparar los patrones de activación muscular entre las flexiones TRX y las de superficie estable en varios ángulos.
Principales métodos:
- Diecinueve hombres entrenados realizaron flexiones en ángulos que van de +30° a -30° utilizando superficies TRX y estables.
- La electromiografía de superficie (EMG) midió la activación del pectoral mayor, deltoides anterior, tríceps braquial, trapecio superior y serrato anterior.
- Los datos de EMG se normalizaron a la contracción isométrica voluntaria máxima y se analizaron mediante ANOVA de medidas repetidas de dos vías.
Principales resultados:
- Las flexiones TRX demostraron una activación de media a muy alta en el pectoral mayor, el deltoides anterior y el tríceps braquial.
- La activación del pectoral mayor fue significativamente mayor con TRX en comparación con superficies estables, especialmente en inclinaciones de +30° a 0°.
- Tanto las flexiones TRX como las estables mostraron una mayor activación del deltoides anterior, tríceps braquial, trapecio superior y serrato anterior a -30° en comparación con ángulos más altos.
Conclusiones:
- Las inclinaciones más altas (+30° a 0°) en las flexiones TRX se dirigen eficazmente al pectoral mayor.
- Los ángulos más bajos (-30°) involucran preferentemente el deltoides anterior, el tríceps braquial, el trapecio superior y el serrato anterior.
- Los hallazgos ofrecen una guía específica del ángulo para optimizar la activación muscular en las flexiones de entrenamiento en suspensión.
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