Pierre Legreneur

Pierre Legreneur
Claude Bernard University Lyon 1 | UCBL · Inter-University Laboratory of Movement Biology

PhD

About

46
Publications
15,192
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
358
Citations
Citations since 2017
10 Research Items
196 Citations
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
Introduction
Comparative locomotion and adaptive strategies in trophic interactions of terrestrial vertebrate tetrapods.

Publications

Publications (46)
Article
The aim of this study was to investigate the hold-by-hold climbing fluency dynamics by using an instrumented holds system that measured the contact time on each hold. Forty-four competitive climbers have been analysed in a regional lead climbing competition during a route composed of 41 instrumented holds on 11 m high artificial climbing wall and w...
Article
Full-text available
Speed climbing involves an optimization of the velocity of the ascent and the trajectory path during performance. Consequently, any amount of energy spent in the two other directions than vertical, namely the lateral direction and the direction perpendicular to the wall plane, is a potential loss of performance. To assess this principle, we present...
Article
Full-text available
Limited data are available on the contribution of wildlife to the spread of antibacterial resistance. We determined the prevalence of resistance to antibiotics in Escherichia coli isolates collected from wild animals in 2013 and 2014 and the genetic basis for resistance to third-generation cephalosporin in Guadeloupe. We recovered 52 antibiotic-res...
Article
Full-text available
The epidemiology of human Salmonella enterica infections in Guadeloupe (French West Indies) appears to be specific, with a higher prevalence of the subspecies enterica serovars Panama and Arechavaleta (Panama and Arechavaleta) than in other regions. A study was performed in Guadeloupe to identify the reservoir of Salmonella serovars by comparing th...
Preprint
We develop a non invasive method for determine morphometric caracteristic of individuals. We modelize a individual by a polyarticulated chain of rigid segments and each of these segments corresponds to a volume. For this, each segment is photographed under two orthogonal plans and each image is digitalized. By assuming that the border of each segme...
Article
Triadobatrachus massinoti is a batrachian known from a single fossil from the Early Triassic of Madagascar that presents a combination of apomorphic salientian and plesiomorphic batrachian characters. Herein we offer a revised description of the specimen based on X-ray micro-tomography data. We report previously unknown caudal vertebrae, possible m...
Article
In this paper, we demonstrated that interarticular coordination of terrestrial tetrapods emerges from an environment highly constrained by friction and the gravitational field. We briefly review recent works on the jumping behavior in squamates, lemurs and amphibians. We then explore previously published work as well as some unpublished experimenta...
Article
This study provides a morphometric data set of body segments that are biomechanically relevant for locomotion in two ecomorphs of adult male anoles, namely, the trunk-ground Anolis sagrei and the trunk-crown Anolis carolinensis. For each species, 10 segments were characterized, and for each segment, length, mass, location of the center of mass, and...
Article
Full-text available
Using an experimental optimization approach, this study investigated whether two human movements, pointing tasks and squat-jumps, could be modelled with a reduced set of kinematic parameters. Three sigmoid models were proposed to model the evolution of joint angles. The models parameters were optimized to fit the 2D position of the joints obtained...
Article
This study provides a morphometric data set of body segments that are biomechanically relevant for locomotion in two ecomorphs of adult male anoles, namely, the trunk-ground Anolis sagrei and the trunk-crown Anolis carolinensis. For each species, 10 segments were characterized, and for each segment, length, mass, location of the center of mass, and...
Article
Full-text available
Detecting and locating prey are key to predatory success within trophic chains. Predators use various signals through specialized visual, olfactory, auditory or tactile sensory systems to pinpoint their prey. Snakes chemically sense their prey through a highly developed auxiliary olfactory sense organ, the vomeronasal organ (VNO). In natricine snak...
Data
The movie shows a positive bioassay with the snake Nerodia fasciata attacking a parvalbumin-coated lure after lure-directed tongue flicks. The video was recorded at 75 fps. (MOV)
Article
Predator–prey interactions are probably one of the key mechanisms for explaining the evolution of organisms in their ecosystems. Scientific fields relevant to understanding the mechanisms of these interactions are as diverse as evolutionary biology, behavioral ecology, ecomorphology, molecular biology, phylogeny, neurosciences, physiology, biomecha...
Article
Tetrapods with highly different morphologies occupy ecological niches of the canopy making them ideal for testing the evolution of structures and performances under similar environmental selective pressures. We compared leap up strategies between two distantly related amniote species, Anolis carolinensis (Squamate) and Microcebus murinus (Lemurifor...
Article
Full-text available
This paper discusses on the role of joint temporal sequence while moving a two-dimensional arm from an initial position to targets into the fingertip workspace in humans. For this purpose, we proposed a general monotonic model of joint asymmetric displacement. Optimization consisted in minimizing least square displacement of either fingertip or arm...
Article
Full-text available
The purpose of this study was to investigate the pattern of coordinations of the hindlimb joints in the world's smallest living primate (Microcebus murinus). The sequencing and timing of joint rotations have been analyzed in five adult males performing maximal leaping from a take-off immobile platform to their own wooden nest. Angular kinematics of...
Article
The workspace of a serial manipulators is defined as the area covered by its extremity for a finite number of degrees of freedom. In order to define its boundaries, a pure geometrical interpretation of the jacobian’s property is applied, in opposite to the specific methods or symbolic calculation as proposed in the literature. This solution leads t...
Article
The aim of this study was to characterize a human pointing task and to validate a sigmoid model for the joint displacement in this movement. Nine subjects pointed three times ten targets located in their upper limb workspace. These targets were distributed in ipsilatéral, contralateral, proximal and distal spaces. Kinematic data showed that ipsilat...
Article
On modélise un système polyarticulé plan par les points définissant les articulations et un dernier point lié au dernier corps. L'espace balayé par le point a sa frontière définie par 3 types de courbes correspondants à des configurations singulières. Ces courbes peuvent être déterminées géométriquement. Pour citer cet article : J. Bastien et al.,...
Article
Full-text available
This study investigated the influence of the covering swimsuit and the fabric surface properties on the butterfly stroke kinematics. Surface properties were evaluated by wetting measurements of two fabric samples: one for training suits and one for competition suits. The surface of the second one was coated by mechanochemical treatment in order to...
Article
The purpose of this study was to investigate the influence of wearing figure skating skates on vertical jump performance and interjoint co-ordinations described in terms of sequencing and timing of joint rotations. Ten national to international figure skaters were filmed while performing a squat jump (SJ) on a force platform. Three experimental con...
Article
Full-text available
To our knowledge jumping kinematics have never been studied in elderly persons. This study was aimed at examining the influence of aging on vertical jump performance and on interjoint coordination. Two groups of adults, 11 young men ages 18-25 years and 11 older men ages 79-100 years, were filmed while performing a maximal squat jump. Compared to y...
Article
Full-text available
This study examined whether providing verbal instructions plus demonstration and task repetition facilitates the early acquisition of a sport skill for which learners had a prior knowledge of the individual motor components. After one demonstration of the task by an expert, 18 novice skaters practiced a figure skating jump during a 15-min. period....
Article
The main goal of this study was to investigate the influence of the extension of the support leg's joints during the repositioning phase of an ice dancing push-off on performance. The second objective was to identify the relevant kinematic parameters of this skating movement. Seven international level skaters were filmed in the sagittal plane while...
Article
Full-text available
The main purpose of this study was to investigate the joined behaviours of tendon and pennation angle during maximal isometric contractions. A musculotendon model of the human soleus muscle was simulated as a function of ankle joint position, which determines the soleus length. Analysis of the respective values of tendon length and pennation angle...
Article
The purpose of this study was to investigate the behaviour of the human soleus muscle during isometric contraction. A model taking into account the musculoskeletal geometry, the musculotendon architecture and the neural excitation input has been developed. The neural excitation input was simulated using a recruitment and firing rate organisation mo...
Article
The main purpose of this study was to investigate the maximal isometric plantarflexion moment as a function of the triceps surae's length. As the gastrocnemius are bi-articular actuators, their respective lengths were modified by variations of the ankle and knee joints angles. The mechanical results agreed ones previously published in the literatur...
Article
8 male athletes performed squat jumps in 5 unloading conditions (using counterweight system) and without unloading. Unloading produced a decrease of impulse duration and an alteration of the subject initial position, with more extended ankle and knee joints angles and a more forward antero-posterior projection of CoM. At toe-off, the ankle angle an...

Network

Cited By

Projects

Projects (5)
Project
The aim of this project is to analyse muscle activation, force and length changes during kicking in relation with injury risks. Soccer players of different levels will perform kicking movements and coordination pattern will be analysed in relation with their mobility and strength capabilities.
Project
The aim of this project is to understand quadrupedal vertical locomotion in humans and animals. For humans, speed, lead and boulder high level climbers' locomotion will be characterized. Animal model is Anolis.