Cambios energéticos y en la activación muscular causados por los materiales de las suelas de las zapatillas

creado en mayo 4, 2014 in Profesionales

artículo sobre los efectos causados por los materiales de las suelas de las zapatillas en la activación muscular y consumo energético durante la carreraConclusiones

Los resultados de este estudio mostraron que los cambios en las características del material del talón de las zapatillas deportivas están asociados con cambios específicos en el consumo de oxígeno, cambios específicos en la intensidad de la activación muscular antes de apoyar el talón en las extremidades inferiores y cambios específicos en la media de señal EMG.

La compresión de estos cambios funcionales puede ser al aprendizaje motriz en la infancia. Un mayor estudio sobre estos fenómenos ayudará a entender muchos aspectos de la locomoción humana, incluyendo el trabajo, el rendimiento, fatiga y posibles lesiones.

Artículo original

The effect of material characteristics of shoe soles on muscle activation and energy aspects during running

B.M. Nigg*, D. Stefanyshyn, G. Cole, P. Stergiou, J. Miller

Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, Canada

Accepted 11 November 2002

 

Abstract

The purposes of this study were (a) to determine group and individual differences in oxygen consumption during heel-toe running and (b) to quantify the differences in EMG activity for selected muscle groups of the lower extremities when running in shoes with different mechanical heel characteristics. Twenty male runners performed heel-toe running using two shoe conditions, one with a mainly elastic and a visco-elastic heel. Oxygen consumption was quantified during steady state runs of 6min duration, running slightly above the aerobic threshold providing four pairs of oxygen consumption results for comparison. Muscle activity was quantified using bipolar surface EMG measurements from the tibialis anterior, medial gastrocnemius, vastus medialis and the hamstrings muscle groups. EMG data were sampled for 5 s every minute for the 6min providing 30 trials. EMG data were compared for the different conditions using an ANOVA (a = 0.05). The findings of this study showed that changes in the heel material characteristics of running shoes were associated with (a) subject specific changes in oxygen consumption and (b) subject and muscle specific changes in the intensities of muscle activation before heel strike in the lower extremities. It is suggested that further study of these phenomena will help understand many aspects of human locomotion, including work, performance, fatigue and possible injuries.

© 2003 Elsevier Science Ltd. All rights reserved.

Keywords: Muscle activation; Oxygen consumption; Running; Visco-elastic heel material

 

 

 

 

 

 

 

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