Jean-Benoît Morin

Jean-Benoît Morin
Université Jean Monnet · LIBM

PhD
Full Professor, University of Saint-Etienne Conslutant, Sport Science

About

318
Publications
849,821
Reads
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9,786
Citations
Additional affiliations
January 2015 - February 2015
French Institute of Sport (INSEP)
Position
  • Lecturer
Description
  • Teacher in the S&C coach degree
September 2014 - March 2016
University of Nice Sophia Antipolis
Position
  • Professor (Full)
January 2014 - March 2016
University of Nice Sophia Antipolis
Position
  • Professor (Full)
Education
September 2001 - September 2004
Université Jean Monnet
Field of study
  • Human locomotion and sport performance biomechanics
September 2000 - September 2001
Université Jean Monnet
Field of study
  • Human Locomotion
September 1999 - September 2001
University of Franche-Comté
Field of study
  • Sport Sciences

Publications

Publications (318)
Data
This spreadsheet (and associated blog post and video tutorial) will allow you to comput athletes' individual load-velocity relationship and program resisted sprint training accordingly. The first sheet is adapted for MySprint app use to determine maximal running speed, and the second one for any speed measurement device.
Article
Le Scouarnec, J, Samozino, P, Andrieu, B, Thubin, T, Morin, JB, and Favier, FB. Effects of repeated sprint training with progressive elastic resistance on sprint performance and anterior-posterior force production in elite young soccer players. J Strength Cond Res 36(6): 1675-1681, 2022-This study aimed to determine whether repeated sprint training...
Article
Objectives Hamstring strain injuries are common in sprint-based activities and multifactorial. One of the main risk factors is the deficit of hamstring eccentric strength, which is not easily assessed in field conditions. Therefore, a new ergometer named “Hamtech” has been developed to accurately and practically assess hamstring force output. The a...
Article
Full-text available
Purpose: The aims of this study were to (1) assess the concurrent validity of global positioning systems (GPSs) against a radar device to measure sprinting force-velocity (F-v) profiles and (2) evaluate the interunit reliability of 10-Hz GPS devices (Vector S7, Catapult Innovations). Methods: Sixteen male elite U18 rugby union players (178.3 [7....
Article
Full-text available
Funding Acknowledgements Type of funding sources: Other. Main funding source(s): Doctoral contract 2018-2022 Background Several studies have shown the importance of the relationship between the power-force-velocity profile (PFVP) and sport performance in elite athletes through optimised exercise training.[1] Optimising the training programme is co...
Chapter
Sprint running consists in covering a given distance in the shortest time possible (or the largest distance in a given time of action) and is one of the key performance determinants in many sports. From a metabolic standpoint, sprint running performance determines the quantities of metabolic energy needed to achieve the corresponding time-displacem...
Article
Full-text available
The aim was to determine the respective influences of sprinting maximal power output (PHmax) and mechanical Force‐velocity (F‐v) profile (i.e. ratio between horizontal force production capacities at low and high velocities) on sprint acceleration performance. A macroscopic biomechanical model using an inverse dynamics approach applied to the athlet...
Article
Résumé Introduction Les lésions des ischiojambiers représentent 12,7 % des blessures chez les footballeuses. Elles surviennent principalement dans les actions de sprint et d’accélération. Aussi, l’objectif de cette étude a été de déterminer s’il existait une association entre l’entraînement au sprint et la survenue des lésions musculaires des isch...
Article
Full-text available
La performance sportive est influencée par les capacités musculaires et physiques des athlètes. Les mesures de référence en laboratoire permettent d’évaluer les productions de force, vitesse, puissance dans des mouvements de saut, de sprint et de musculation, ou encore de biomécanique de la foulée de course, qui comptent parmi les déterminants biom...
Article
Full-text available
This study aimed to quantify the validity and reliability of load–velocity (LV) relationship of hill sprinting using a range of different hill gradients and to describe the effect of hill gradient on sprint performance. Twenty-four collegiate-level athletes performed a series of maximal sprints on either flat terrain or hills of gradients 5.2, 8.8...
Conference Paper
Background A test battery is recommended after anterior cruciate ligament reconstruction (ACLR) to help decision-making of return to sport (RTS). Running is important in RTS continuum, but it is currently not included in the usual test batteries. Could running pattern asymmetry, which can be observed after ACLR, be considered as a risk factor of AC...
Article
Full-text available
PurposeTheoretical 100-m performance times (t100-m) of a top athlete at Mexico-City (2250 m a.s.l.), Alto-Irpavi (Bolivia) (3340 m a.s.l.) and in a science-fiction scenario “in vacuo” were estimated assuming that at the onset of the run: (i) the velocity (v) increases exponentially with time; hence (ii) the forward acceleration (af) decreases linea...
Article
Full-text available
Background Achilles tendinopathy (AT) is a common overuse injury in running-related sports where patients experience pain and impaired function which can persist. A graded rehabilitation program has been successful in reducing pain and improving function to enable a return to sport. The aim of this study is to compare the effectiveness of a criteri...
Article
The orientation of the ground reaction force (GRF) vector is a key determinant of human sprint acceleration performance and has been described using ratio of forces (RF) which quantifies the ratio of the antero-posterior component to the resultant GRF. Different methods have previously been used to calculate step-averaged RF, and this study therefo...
Article
Full-text available
Clear decreases in horizontal force production capacity during sprint acceleration have been reported after hamstring injuries (HI) in football players. We hypothesized that lower FH0 is associated with a higher HI occurrence in football players. We aimed to analyze the association between sprint running horizontal force production capacities at lo...
Article
Full-text available
Purpose: Sprint kinematics have been linked to hamstring injury and performance. This study aimed to examine if a specific 6-week multimodal intervention, combining lumbopelvic control and unning technique exercises, induced changes in pelvis and lower-limb kinematics at maximal speed and improved sprint performance. Methods: Healthy amateur ath...
Conference Paper
Full-text available
Basketball is an intermittent sport were the fast actions such as sprints, jumps or changes of direction are key physical features. Typically, it is in the preseason that these, and the main physical components are emphasized during training to ensure the highest levels of performance in the following competitive period (1). Given that the technica...
Article
Full-text available
Assessing football players' sprint mechanical outputs is key to the performance management process (e.g. talent identification, training, monitoring, return-to-sport). This is possible using linear sprint testing to derive force-velocity-power outputs (in laboratory or field settings), but testing requires specific efforts and the movement assessed...
Data
All procedures are explained within the spreadsheet. - record a single sprint time-speed data with an accurate/valid GPS system - export time-speed data (from speed = 0.2 m/s to the top speed plateau) - copy-paste into the first 2 columns - run the excel solver to fit the exponential model Youtube tutorial: https://www.youtube.com/watch?v=ZKtRZBF...
Preprint
Full-text available
Purpose: compare linear and curvilinear models to describe the force-velocity relationship, especially on the velocity end, in lower limb acyclic extensions. Methods: nine athletes performed horizontal lower limb extensions on a leg press ergometer allowing to set from very high to very low (i.e. horizontal assisted extensions) resistive and inerti...
Article
Comprehensive information regarding neuromuscular function, as assessed through force-velocity-power (FVP) profiling, is of importance for training optimization in athletes. However, neuromuscular function is highly task-specific, potentially governed by dissimilarity of the overall orientation of forceapplication. The hip thrust (HT) exercise is t...
Article
Full-text available
Dans les sports nécessitant des sprints et accélérations avec des changements brusques de directions, les lésions musculaires des ischio-jambiers (IJ) sont parmi les blessures les plus fréquentes avec une prévalence sur une saison d’environ 20% des sportifs. C’est le cas par exemple du rugby où cette blessure est parmi celles qui induisent aussi le...
Article
Full-text available
Specific force capacities might be a limiting factor for alpine skiing performance, yet there is little consensus on the capabilities in question, and whether they differ between disciplines. We aimed to test discipline (speed and technical) and performance (event-specific world standing) effects on lower-limb force-production qualities. National-l...
Article
In jumping, countermovement increases net propulsive force and improves performance. We aimed to test whether this countermovement effect is velocity specific and examine the degree to which this varies between athletes, sports or performance levels. Force-velocity profiles were compiled in high-level skiers (N= 23) and sprinters (N= 30), with thei...
Article
Objective To analyse the rates of lower limb muscle injuries in athletics disciplines requiring different running velocities during international athletics championships. Design Prospective total population study. Methods During 13 international athletics championships (2009 - 2019) national medical teams and local organizing committee physicians...
Article
Full-text available
To train hamstring muscle specifically to sprint, strengthening programs should target exercises associated with horizontal force production and high levels of hamstring activity. Therefore, the objectives of this study were to analyze the correlation between force production capacities during sprinting and hamstring strengthening exercises, and to...
Article
Full-text available
Alpine ski racers require diverse physical capabilities. While enhanced force production is considered key to high-level skiing, its relevance is convoluted. The aims of this study were to i) clarify the association between performance path length and velocity, ii) test the importance of radial force, and iii) explore the contribution of force magn...
Article
Full-text available
Background Sprint performance is an essential skill to target within soccer, which can be likely achieved with a variety of methods, including different on-field training options. One such method could be heavy resisted sprint training. However, the effects of such overload on sprint performance and the related kinetic changes are unknown in a prof...
Article
Full-text available
Purpose: We determined whether running mechanics and leg muscle activity patterns for pre-activation (50 ms prior to foot contact) and loading (first half, second half and entire stance) phases vary between early, late and entire acceleration phases during repeated treadmill sprints. Methods: Ten male athletes performed three sets of five 5-s sp...
Article
Full-text available
An association has been reported between dynamic anterior pelvic tilt (APT) and hamstring injuries; however, no research has examined if a training-based preventive intervention could alter APT. Therefore, the aim of the present study was to examine if a specific 6-week multimodal intervention, based on the theoretical influence of neighbouring joi...
Preprint
Assessing football players’ sprint mechanical outputs is key to the performance management process (e.g. talent identification, training, monitoring, return-to-sport). This is possible using linear sprint testing to derive force-velocity-power outputs (in laboratory or field settings), but (i) testing requires specific efforts and (ii) the movement...
Preprint
Full-text available
Assessing football players' sprint mechanical outputs is key to the performance management process (e.g. talent identification, training, monitoring, return-to-sport). This is possible using linear sprint testing to derive force-velocity-power outputs (in laboratory or field settings), but (i) testing requires specific efforts and (ii) the movement...
Preprint
This study aimed to: 1) understand how the calculation of step-averaged ratio of forces (RF; horizontal component as a percentage of total ground reaction force (GRF) magnitude) affects the RF-horizontal velocity (vH) profile; 2) establish the importance of RF to early acceleration (i.e. up to the end of step 4) performance; 3) assess how well the...
Article
Full-text available
PurposeWe determined the effect of custom foot orthotics manufactured from ethyl-vinyl acetate (EVA) and expanded thermoplastic polyurethane (TPU) materials, both compared to a control condition (CON; shoes only) during repeated sprints on running mechanical alterations.Methods Eighteen males performed eight, 5-s sprints with 25-s recovery on an in...
Technical Report
https://blogs.bmj.com/bjsm/2020/08/09/healthy-return-to-performance-in-elite-athletes-and-para-athletes-after-the-covid-19-lockdown/
Article
Full-text available
Introduction Hamstring muscle injuries (HMI) continue to plague professional football. Several scientific publications have encouraged a multifactorial approach; however, no multifactorial HMI risk reduction studies have been conducted in professional football. Furthermore, individualisation of HMI management programmes has only been researched in...
Article
Radar technology has the potential for providing new insights into maximal horizontal deceleration ability. This study aimed to investigate the intra- and inter-day reliability and sensitivity of kinematic and kinetic variables obtained from a novel, maximal horizontal deceleration test, using radar technology. Thirty-eight university sport athlete...
Article
Ballistic actions are imperative in sports where performance depends on power production across a relevant range of contraction- and movement velocities. Force-velocity-power profiling provides information regarding neuromuscular capabilities and vertical performances, but knowledge regarding its associative value towards horizontal movements is sc...
Article
Successful sprinting depends on covering a specific distance in the shortest time possible. Although external forces are key to sprinting, less consideration is given to the duration of force application, which influences the impulse generated. This study explored relationships between sprint performance measures and external kinetic and kinematic...
Article
Full-text available
This study describes asymmetry in the main running mechanical variables during repeated treadmill sprints in elite female athletes and examines whether inter-limb differences in sprinting mechanics increase with fatigue. Eighteen elite female players (French national Rugby Sevens team) performed 8 × 5-s sprints (25-s rest) on an instrumented motori...
Article
Full-text available
We tested the hypothesis that the degree of adaptation to highly focused sprint training at opposite ends of the sprint Force-Velocity (FV) spectrum would be associated with initial sprint FV-profile in rugby athletes. Training-induced changes in sprint FV-profiles were computed before and after an 8-week in-season resisted or assisted sprint train...
Article
Full-text available
Objectives We determined whether perceptually-regulated, high-intensity intermittent runs in hypoxia and normoxia induce similar running mechanics adjustments within and between intervals. Design Within-participants repeated measures. Methods Nineteen trained runners completed a high-intensity intermittent running protocol (4 × 4-min intervals at...
Article
Full-text available
The aim of this study was to test individual adaptation kinetics to a high-resistance sprint training program designed to improve maximal horizontal power (Pmax), and compare the group and individual results of a classical “pre-post” analysis, and a “pre-peak” approach. Thirteen male and 9 female trained sprinters had their 30-m sprint performance...
Article
Full-text available
Aims The purpose of this study was to compare the effects of hamstring eccentric (NHE) strength training versus sprint training programmed as complements to regular soccer practice, on sprint performance and its mechanical underpinnings, as well as biceps femoris long head (BFlh) architecture. Methods In this prospective interventional control stu...
Article
Full-text available
This study aimed to describe the seasonal changes in the sprint force-velocity (Fv) profile of professional soccer players. The sprint Fv profile of 21 male soccer players competing in the first division of the Spanish soccer league was evaluated 6 times: preseason 1 (September 2015), in-season 1 (November 2015), in-season 2 (January 2016), in-seas...
Article
Full-text available
Background The force-velocity-power (FVP) profile is used to describe dynamic force production capacities, which is of great interest in training high performance athletes. However, FVP may serve a new additional tool for cardiac rehabilitation (CR) of coronary artery disease (CAD) patients. The aim of this study was to compare the FVP profile betw...
Article
Background: High-intensity training, a still unexplored exercise for individuals with Parkinson's disease, is positively related with increased functionality and aerobic profile in healthy individuals. The aim of this work was to evaluate the feasibility, safety, and acceptance of sprint running in individuals with mild-to-moderate Parkinson's. Ad...
Article
Full-text available
Sport scientists and strength and conditioning coaches are showing growing interest in the magnitude, orientation, and application of ground reaction force during acceleration actions in sport, as it can identify the key mechanical determinants of performance. Horizontal force-velocity pro-filing or sprint profiling helps practitioners understand t...