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Hindi Journal of Athletic EnhancementISSN: 2324-9080
Yoann Blache Author
Subjects of specialization
Affiliation
biomechanics
Univ Lyon, University Claude Bernard Lyon 1, Laboratory Interpretative de Biologic de la Motrin, F-69622, Villeurbanne, France
Biography
"After having completed his PhD in 2012 (University of Lyon), Yoann has been assistant professor at the University of Lyon (2013, 2016), with, in-between, a post doctorate position of two years at the University of Montreal (2014-2015).
Publications
Research Article Subscription
Influence of a Modified Step Frequency on Energy Cost of Running after a Downhill Run in Non-Expert Subjects
Author(s): Pascal Balducci, Michel Clémençon, Karine Monteil, Yoann Blache, Robin Trama, Christophe A Hautier
Purpose: The purpose of this study was to examine the role of step frequency (SF) on energy cost of running (Cr) after a downhill run (DHR) of 7.5 km (-6.7% grade) run at about 80% of heart rate reserve.
Method: Pre- and post-DHR, force, stiffness and Cr at 70% of velocity at 2 V O • max were measured in twelve participants unaccustomed to mountain running. Post-DHR data were recorded at a freely chosen SF and at the pre-DHR SF.
Results: A DHR induced reductions in the knee extensors force (-15.7%, P<0.001) and leg stiffness (-3.2%, P<0.05), an increase in blood lactate concentration, a significant increase in creatine kinase activity and muscle soreness. The post-DHR freely chosen SF increased (p<0.001... view more»
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