Gasto energético aeróbico y anaeróbico en un circuito con cargas a seis intensidades diferentes. (Aerobic and anaerobic energy expenditure during at circuit weight training through six different intensities).

Pedro José Benito Peinado, María Álvarez Sánchez, Esther Morencos Martínez, Rocío Cupeiro Coto, Víctor Díaz Molina, Ana Belén Peinado Lozano, Francisco Javier Calderón Montero

Resumen


El entrenamiento con cargas es una actividad anaeróbica glucolítica intensa y se ha comprobado que el error en las estimaciones del gasto energético en esta actividad varía entre un 13 y un 30%. El principal objetivo de este trabajo es describir la contribución anaeróbica de energía en un circuito con cargas. Doce hombres (20-26 años) y diecisiete mujeres (18-29 años) estudiantes de Ciencias de la Actividad Física y del Deporte realizaron un entrenamiento en circuito de cargas a 6 intensidades diferentes (entre el 30% y 80% de su 15RM). Durante la totalidad de los circuitos se registró el gasto energético aeróbico por calorimetría indirecta, la frecuencia cardiaca con pulsómetro Polar® y la concentración de lactato en sangre capilar para medir la contribución anaeróbica. El incremento que produjo la energía anaeróbica se situó entre el 5,1% y un máximo del 13,5%, lo que hace evidente que medir o no la contribución anaeróbica en el entrenamiento en circuito puede provocar un error medio del 9,65%. Existen diferencias significativas (P< 0,05) entre el gasto energético aeróbico y total (aeróbico+anaeróbico) en todas las intensidades, en un circuito de entrenamiento con cargas a intensidades progresivas.

Palabras clave: entrenamiento con cargas; gasto energético; lactato; circuito.

Abstract

Resistance training is an intense anaerobic glycolytic activity and has been shown that estimates of energy expenditure in this activity turn out into an error that varies between 13 and 30%. The main aim of this paper is to describe the anaerobic energy contribution in  circuit weight training. Twelve men (20-26 years) and seventeen women (18-29 years) students in Science of Physical Activity and Sport performed circuit training at six different intensities (between 30% and 80% of 15RM). During all the circuits aerobic energy expenditure was registered by indirect calorimetry, heart rate with Polar® monitors and lactate concentration in capillary blood to measure the anaerobic contribution. The increased due to anaerobic energy was between 5,1% and a maximum of 13,5%, which clearly means that to measure or not the anaerobic contribution in circuit training can lead to an average error of 9,65%. There are significant differences (P <0,05) between aerobic energy expenditure and total (aerobic+anaerobic) at all the intensities, in a circuit weight training with progressive loads.

Key words: resistance training; energy expenditure; lactate; circuit.

doi:10.5232/ricyde2011.02402

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Palabras clave/key words


entrenamiento con cargas; gasto energético; lactato; circuito; resistance training; energy expenditure; lactate; circuit.

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RICYDE. Revista Internacional de Ciencias del Deporte
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