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Your search keyword '"Saez de Villareal, Eduardo"' showing total 5 results
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5 results on '"Saez de Villareal, Eduardo"'

2. Sprint Mechanics in World-Class Athletes: A New Insight into the Limits of Human Locomotion

Author

Rabita, Giuseppe, DOREL, Sylvain, Slawinski, Jean, Saez de Villareal, Eduardo, Couturier, Antoine, Samozino, Pierre, MORIN, Jean-Benoît, Institut national du sport, de l'expertise et de la performance (INSEP), Motricité, interaction, performance EA 4334 (MIP), Le Mans Université (UM)-Université de Nantes - UFR des Sciences et Techniques des Activités Physiques et Sportives (UFR STAPS), Université de Nantes (UN)-Université de Nantes (UN), Centre de Recherche sur le Sport et le Mouvement (CeRSM), Université Paris Nanterre (UPN), Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM ), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Laboratoire Motricité Humaine Expertise Sport Santé (LAMHESS), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Université de Toulon (UTLN), Motricité, interactions, performance EA 4334 / Movement - Interactions - Performance (MIP), Le Mans Université (UM)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université de Nantes - UFR des Sciences et Techniques des Activités Physiques et Sportives (UFR STAPS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université de Toulon (UTLN)-Université Côte d'Azur (UCA), French Institute of Sport (INSEP), Laboratory Sport, Expertise and Performance (EA7370) (SEP (EA7370)), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Université Nice Sophia Antipolis (1965 - 2019) (UNS), Institut national du sport, de l'expertise et de la performance ( INSEP ), Motricité, interaction, performance ( MIP ), Université de Nantes ( UN ), Centre de Recherche sur le Sport et le Mouvement ( CeRSM ), Université Paris Nanterre ( UPN ), Laboratoire Interuniversitaire de Biologie de la Motricité ( LIBM ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] ( UJM ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ), Laboratoire Motricité Humaine Expertise Sport Santé ( LAMHESS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Université de Toulon ( UTLN ), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)

Subjects
Adult, Male, [ SDV.MHEP.PHY ] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, Performance, Acceleration, elite sprinters, Force orientation, Video Recording, Athletic Performance, Analyse du Mouvement en Biomécanique Physiologie et Imagerie, Biomechanical Phenomena, Running, Kinetics, Young Adult, power output, Exercise Test, [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], Humans, [PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph], [ SDV.IB.IMA ] Life Sciences [q-bio]/Bioengineering/Imaging, [ PHYS.MECA.BIOM ] Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
Abstract

Epub 2015 Jan 31; The objective of this study was to characterize the mechanics of maximal running sprint acceleration in high-level athletes. Four elite (100-m best time 9.95-10.29 s) and five sub-elite (10.40-10.60 s) sprinters performed seven sprints in overground conditions. A single virtual 40-m sprint was reconstructed and kinetics parameters were calculated for each step using a force platform system and video analyses. Anteroposterior force (FY), power (PY), and the ratio of the horizontal force component to the resultant (total) force (RF, which reflects the orientation of the resultant ground reaction force for each support phase) were computed as a function of velocity (V). FY-V, RF-V, and PY-V relationships were well described by significant linear (mean R(2) of 0.892 ± 0.049 and 0.950 ± 0.023) and quadratic (mean R(2) = 0.732 ± 0.114) models, respectively. The current study allows a better understanding of the mechanics of the sprint acceleration notably by modeling the relationships between the forward velocity and the main mechanical key variables of the sprint. As these findings partly concern world-class sprinters tested in overground conditions, they give new insights into some aspects of the biomechanical limits of human locomotion.

Published
2015

3. A simple method for measuring power, force, velocity properties, and mechanical effectiveness in sprint running

Author

Samozino, Pierre, Rabita, Giuseppe, Dorel, Sylvain, Slawinski, Jean, Peyrot, Nicolas, Saez de Villareal, Eduardo, Morin, Jean-Benoît, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM ), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM), Institut national du sport, de l'expertise et de la performance (INSEP), Motricité, interactions, performance EA 4334 / Movement - Interactions - Performance (MIP), Le Mans Université (UM)-Centre hospitalier universitaire de Nantes (CHU Nantes)-Université de Nantes - UFR des Sciences et Techniques des Activités Physiques et Sportives (UFR STAPS), Université de Nantes (UN)-Université de Nantes (UN), Centre de Recherche sur le Sport et le Mouvement (CeRSM), Université Paris Nanterre (UPN), Déterminants Interculturels de la Motricité et de la Performance Sportive (DIMPS), Université de La Réunion (UR), Universidad Pablo de Olavide [Sevilla] (UPO), Laboratoire Motricité Humaine Expertise Sport Santé (LAMHESS), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université de Toulon (UTLN)-Université Côte d'Azur (UCA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Motricité, interaction, performance EA 4334 (MIP), Le Mans Université (UM)-Université de Nantes - UFR des Sciences et Techniques des Activités Physiques et Sportives (UFR STAPS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Université de Toulon (UTLN), Laboratoire Interuniversitaire de Biologie de la Motricité ( LIBM ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] ( UJM ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ), Institut national du sport, de l'expertise et de la performance ( INSEP ), Motricité, interaction, performance ( MIP ), Université de Nantes ( UN ), Centre de Recherche sur le Sport et le Mouvement ( CeRSM ), Université Paris Nanterre ( UPN ), Déterminants Interculturels de la Motricité et de la Performance Sportive ( DIMPS ), Université de la Réunion ( UR ), Universidad Pablo de Olavide, Laboratoire Motricité Humaine Expertise Sport Santé ( LAMHESS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Université de Toulon ( UTLN ), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), and Université Nice Sophia Antipolis (1965 - 2019) (UNS)

Subjects
[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph], [ PHYS.MECA.BIOM ] Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph]
Abstract

International audience; This study aimed to validate a simple field method for determining force– and power–velocity relationships and mechanical effectiveness of force application during sprint running. The proposed method, based on an inverse dynamic approach applied to the body center of mass, estimates the step-averaged ground reaction forces in runner's sagittal plane of motion during overground sprint acceleration from only anthropometric and spatio-temporal data. Force– and power–velocity relationships, the associated variables, and mechanical effectiveness were determined (a) on nine sprinters using both the proposed method and force plate measurements and (b) on six other sprinters using the proposed method during several consecutive trials to assess the inter-trial reliability. The low bias (

Published
2015

5. Optimal sampling frequency in recording of resistance training exercises.

Author

Bardella, Paolo, Carrasquilla García, Irene, Pozzo, Marco, Tous-Fajardo, Julio, Saez de Villareal, Eduardo, and Suarez-Arrones, Luis

Subjects
SKELETAL muscle physiology, ATHLETIC ability, EXERCISE, EXERCISE physiology, MUSCLE strength, SIGNAL processing, RESISTANCE training
Abstract

The purpose of this study was to analyse the raw lifting speed collected during four different resistance training exercises to assess the optimal sampling frequency. Eight physically active participants performed sets of Squat Jumps, Countermovement Jumps, Squats and Bench Presses at a maximal lifting speed. A linear encoder was used to measure the instantaneous speed at a 200 Hz sampling rate. Subsequently, the power spectrum of the signal was computed by evaluating its Discrete Fourier Transform. The sampling frequency needed to reconstruct the signals with an error of less than 0.1% wasf99.9 = 11.615 ± 2.680 Hz for the exercise exhibiting the largest bandwidth, with the absolute highest individual value being 17.467 Hz.There was no difference between sets in any of the exercises. Using the closest integer sampling frequency value (25 Hz) yielded a reconstruction of the signal up to 99.975 ± 0.025% of its total in the worst case. In conclusion, a sampling rate of 25 Hz or above is more than adequate to record raw speed data and compute power during resistance training exercises, even under the most extreme circumstances during explosive exercises. Higher sampling frequencies provide no increase in the recording precision and may instead have adverse effects on the overall data quality. [ABSTRACT FROM PUBLISHER]

Published
2017
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