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Can trained runners effectively attenuate impact accelaeration during repeated high-intensity running bouts?

Clansey, Adam C, Lake, Mark J, Wallace, Eric S, Feehally, Tom and Hanlon, Michael (2016) Can trained runners effectively attenuate impact accelaeration during repeated high-intensity running bouts? Journal of Applied Biomechanics . [Journal article]

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DOI: 10.1123/jab.2015-0125

Abstract

The purpose of this study was to investigate the effects of prolonged high intensityrunning on impact accelerations in trained runners. Thirteen male distance runners completed two 20-minute treadmill runs at speeds corresponding to 95% of onset ofblood lactate accumulation. Leg and head accelerations were collected for 20 s every 4th minute. Rating of perceived exertion (RPE) scores were recorded during the 3rd and last minute of each run. RPE responses increased (p < .001) from the start (11.8 ± 0.9, moderate intensity) of the first run to the end (17.7 ±1.5; very hard) of the second run. Runners maintained their leg impact acceleration, impact attenuation, stride length and stride frequency characteristics with prolonged run duration. However, a small (0.11- 0.14g) but significant increase (p < .001) in head impact accelerations were observed at the end of both first and second runs. It was concluded that trained runners are able to control leg impact accelerations during sustained high-intensity running. Alongside the increases in perceived exertion levels, running mechanics and frequency domain impact attenuation levels remained constant. This suggests that the present trained runners are able to cope from a mechanical perspective despite an increased physiological demand.

Item Type:Journal article
Keywords:High-intensity, impace accerlation, running, treadmill
Faculties and Schools:Faculty of Life and Health Sciences > School of Sport
Faculty of Life and Health Sciences
Research Institutes and Groups:Sport and Exercise Sciences Research Institute
Sport and Exercise Sciences Research Institute > Centre for Sports Science and Sports Medicine
ID Code:32817
Deposited By: Mrs Julie Haydock
Deposited On:22 Dec 2015 09:23
Last Modified:06 Aug 2018 11:09

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