24 results on '"Bascou, Joseph"'
Search Results
2. Optimal Control Formulation for Manual Wheelchair Locomotion Simulations: Influence of Anteroposterior Stability.
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Loisel, Jade, Rouvier, Théo, Hybois, Samuel, Bascou, Joseph, and Saure, Christophe
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- 2023
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3. Increased of stability and security in transfemoral amputees with a knee-ankle synergistic system.
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Requena, Christelle, Bascou, Joseph, Bonnet, Xavier, Duraffourg, Clement, Loiret, Isabelle, Thomas-Pohl, Marie, Logel, Cyril, Callens, Benjamin, Rapin, Nathalie, and Pillet, Hélène
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PHYSICAL activity , *BODY movement , *PHYSICAL fitness , *BIOMECHANICS , *GAIT in humans - Abstract
Uneven ground, slopes, stairs, sidewalks are constraining situations that must be overcome by transfemoral amputees (TFA). However, most of prosthetic systems do not have ankle mobility, the connection between the prosthetic knee and the prosthetic foot being a rigid part. A certain flexibility is allowed by the energy storage restitution feet thanks to their stiffness. But they do not allow a complete adaptation to daily encountered walking situations, like walking on slopes (ascent and descent) or downstairs [1]. Furthermore, TFA have a high risk of falling, with more than 50% of them reporting falling at least once in a year [2]. This risk is increased by the lack of musculature due to the amputation and the lack of mobility of the prosthetic ankle during the swing phase [3]. The aim of this study was to evaluate whether a microprocessor-controlled knee-ankle system (MPK_NEW) can help improve walking in transfemoral amputees. Eleven TFA with an activity level of d4602 (International Classification of Function, Disability and Health) or higher and wearing a microprocessor knee able to control stance and swing phases (MPK_HAB), for at least 3 months, were included in this study. They wore both prostheses (MPK_HAB and MPK_NEW) for 4 weeks, starting randomly with one or the other. At the end of each period, a quantified gait analysis (level ground, 12% slopes ascent and descent, downstairs) was performed using VICON® optoelectronic system (Vicon Motion Systems, Oxford Metrics, UK, sampling at 100 Hz) with 54 full-body markers-set. Flat Foot Time (FFT, where the ankle angle in the sagittal plane was within ± 1.25° of its orientation at 20% of the gait cycle) and Minimum Toe Clearance (MTC, minimum distance between the foot and the ground during the swing phase) were calculated for both prostheses. Student or Wilcoxon test were performed to assess significance at 0.05. Fig. 1 A shows an increase in flat-foot time for all walking situations with the MPK_NEW prosthesis, which was significant (*,p_value < 0.01) for all situations but the slope ascent one. Fig. 1B shows a significant increase in MTC (*, p_value < 0.01) when walking at level ground and ascent slope with the MPK_NEW prosthesis. Fig. 1. Comparison of FFT and MTC for each prosthesis in different walking situations [Display omitted] The knee-ankle synergy allows plantar and dorsal flexion during the stance and swing phases, increasing FFT (stance stability) and MTC (swing phase security) in various daily situations. This was consistent with the literature observed on transtibial amputees and approaching the behavior of asymptomatic subjects [4–6]. Thus, this new prosthetic system may improve stability and security for TFA [4,7], allowing them to better adapt to their daily environment. [ABSTRACT FROM AUTHOR]
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- 2023
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4. Manual wheelchair biomechanics while overcoming various environmental barriers: A systematic review.
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Rouvier, Théo, Louessard, Aude, Simonetti, Emeline, Hybois, Samuel, Bascou, Joseph, Pontonnier, Charles, Pillet, Hélène, and Sauret, Christophe
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BIOMECHANICS ,WHEELCHAIRS ,KINEMATICS ,ELECTRIC wheelchairs ,MORPHOLOGY ,ANKLE - Abstract
During manual wheelchair (MWC) locomotion, the user's upper limbs are subject to heavy stresses and fatigue because the upper body is permanently engaged to propel the MWC. These stresses and fatigue vary according to the environmental barriers encountered outdoors along a given path. This study aimed at conducting a systematic review of the literature assessing the biomechanics of MWC users crossing various situations, which represent physical environmental barriers. Through a systematic search on PubMed, 34 articles were selected and classified according to the investigated environmental barriers: slope; cross-slope; curb; and ground type. For each barrier, biomechanical parameters were divided into four categories: spatiotemporal parameters; kinematics; kinetics; and muscle activity. All results from the different studies were gathered, including numerical data, and assessed with respect to the methodology used in each study. This review sheds light on the fact that certain situations (cross-slopes and curbs) or parameters (kinematics) have scarcely been studied, and that a wider set of situations should be studied. Five recommendations were made at the end of this review process to standardize the procedure when reporting materials, methods, and results for the study of biomechanics of any environmental barrier encountered in MWC locomotion: (i) effectively reporting barriers' lengths, grades, or heights; (ii) striving for standardization or a report of the approach conditions of the barrier, such as velocity, especially on curbs; (iii) reporting the configuration of the used MWC, and if it was fitted to the subject's morphology; (iv) reporting rotation sequences for the expression of moments and kinematics, and when used, the definition of the musculoskeletal model; lastly (v) when possible, reporting measurement uncertainties and model reconstruction errors. [ABSTRACT FROM AUTHOR]
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- 2022
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5. Comparison of shoulder kinematic chain models and their influence on kinematics and kinetics in the study of manual wheelchair propulsion
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Hybois, Samuel, Puchaud, Pierre, Bourgain, Maxime, Lombart, Antoine, Bascou, Joseph, Lavaste, François, Fodé, Pascale, Pillet, Hélène, and Sauret, Christophe
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- 2019
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6. Manual wheelchair's turning resistance: swivelling resistance parameters of front and rear wheels on different surfaces.
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Fallot, Constantin, Bascou, Joseph, Pillet, Hélène, and Sauret, Christophe
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WHEELCHAIRS , *MECHANICS (Physics) - Abstract
Daily locomotion with a manual wheelchair includes curvilinear movements. However, little is known about the resisting forces in play during turning manoeuvres where the wheels are generally both rolling and swivelling. This study aimed at quantifying the swivelling resistance parameters of several wheels on different surfaces and to evaluate the effect of the curvature radius on these parameters. A specific test bench was designed allowing the swivelling resistance parameters of a wheel rolling while swivelling to be determined. Seven wheels (3 front and 4 rear wheels), three surfaces (plywood, linoleum and carpet), two loads (25 and 45 kg) and five curvature radii (from 0 to 0.4 m) were tested through a full factorial design experiment. Results showed that the wheel type was the most influential factor on swivelling resistance parameters, followed by the surface and the curvature radius. The effect of the load on swivelling resistance parameters was found negligible when compared to the influence of other factors. A predictive model for swivelling resistance parameters of the different wheel/surface combinations was proposed, as a function of the curvature radius. This study allowed the swivelling resistance parameters of different wheel/surface combinations to be quantified, as a function of the curvature radius of the wheel trajectory. Combined with data on rolling resistance, these data could now be used to assess energy losses during real life ambulation or to achieve more realistic behaviour in virtual rehabilitation environment. Swivelling resistances are increased by carpet surfaces compared to tile surfaces. Conversely to rolling resistance, castors wheels are less prone to swivelling resistance than rear wheels The swivelling resistance of a wheel rolling while swivelling is decreased compared to a pure swivelling movement. Combined with data on rolling resistance, these data on swivelling resistance would allow energy loss during daily life activity to be determined or as input data for the control of wheelchair simulator in virtual environment used for rehabilitation. [ABSTRACT FROM AUTHOR]
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- 2021
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7. Is bearing resistance negligible during wheelchair locomotion? Design and validation of a testing device
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Bascou, Joseph, Sauret, Christophe, Lavaste, Francois, Hélène, Pillet, Arts et Métiers ParisTech, HESAM Université (HESAM), Laboratoire de biomécanique (LBM), Université Paris 13 (UP13)-Université Sorbonne Paris Cité (USPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Institut de Biomecanique Humaine Georges Charpak, Université Paris 13 (UP13)-Arts et Métiers ParisTech, Administrateur Ensam, Compte De Service, and HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)
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wheelchair, bearing resistance, radial load, setting influence, axial load, rotation velocity ,Mécanique [Sciences de l'ingénieur] ,wheelchair ,rotation velocity ,radial load ,setting influence ,bearing resistance ,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,Wheelchair, bearing resistance, radial load, setting influence, axial load, rotation velocity ,[SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph] ,human activities ,axial load - Abstract
International audience; Purpose: Among the different resistances occurring during wheelchair locomotion and that limit the user autonomy, bearing resistance is generally neglected, based on a few studies carried out in static conditions and by manufacturer’s assertion. Therefore, no special attention is generally paid to the mounting and the maintenance of manual wheelchair bearings. However, the effect of inadequate mounting or maintenance on wheelchair bearing resistance has still to be clarified. This study aimed at filling this gap by developing and validating a specific device allowing the measurement of wheelchair bearing friction, characterized by low speed velocities, with an accuracy lower than 0.003 Nm.Methods: The bearing resistance measured by the device was compared to free deceleration measurement, intra and inter operator reproducibility were assessed. A factorial experiment allowed the effects of various functioning parameters (axial and radial loads, velocity) to be classified.Results: The device allowed significant differences in the bearing resistance of static and rotating conditions to be measured, even if a relatively high proportionality was found between both conditions. The factorial experiment allowed the expected impact of the radial load on bearing resistance as well as the predominant effect of the axial load to be demonstrated.Conclusions: As a consequence, it appeared that the control of the axial load is compulsory for measurement purposes or during wheel mounting, to avoid significant increase of global resistance during wheelchair locomotion. The findings of this study could help enhancing the models which assess manual wheelchair mechanical power from its settings and use conditions.
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- 2017
8. Changes in wheelchair biomechanics within the first 120 minutes of practice: spatiotemporal parameters, handrim forces, motor force, rolling resistance and fore-aft stability.
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Eydieux, Nicolas, Hybois, Samuel, Siegel, Alice, Bascou, Joseph, Vaslin, Philippe, Pillet, Hélène, Fodé, Pascale, and Sauret, Christophe
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EDUCATION of people with disabilities ,PSYCHOLOGICAL adaptation ,BIOMECHANICS ,GRIP strength ,HAND ,HUMAN locomotion ,LEARNING strategies ,MOTOR ability ,SPACE perception ,TIME ,WHEELCHAIRS ,TASK performance ,BODY movement ,PRE-tests & post-tests ,EXERCISE intensity ,TENSILE strength ,RESISTANCE training - Abstract
Purpose: During manual wheelchair (MWC) skill acquisition, users adapt their propulsion technique through changes in biomechanical parameters. This evolution is assumed to be driven towards a more efficient behavior. However, when no specific training protocol is provided to users, little is known about how they spontaneously adapt during overground MWC locomotion. For that purpose, we investigated this biomechanical spontaneous adaptation within the initial phase of low-intensity uninstructed training. Materials and methods: Eighteen novice able-bodied subjects were enrolled to perform 120 min of uninstructed practice with a field MWC, distributed over 4 weeks. Subjects were tested during the very first minutes of the program, and after completion of the entire training protocol. Spatiotemporal parameters, handrim forces, motor force, rolling resistance and fore-aft stability were investigated using an instrumented field wheelchair. Results: Participants rapidly increased linear velocity of the MWC, thanks to a higher propulsive force. This was achieved thanks to higher handrim forces, combined with an improved fraction of effective force for startup but not for propulsion. Despite changes in mechanical actions exerted by the user on the MWC, rolling resistance remained constant but the stability index was noticeably altered. Conclusion: Even if no indication is given, novice MWC users rapidly change their propulsion technique and increase their linear speed. Such improvements in MWC mobility are allowed by a mastering of the whole range of stability offered by the MWC, which raises the issue of safety on the MWC. The learning process of manual wheelchair locomotion induces adaptations for novice users, who change their propulsion technique to improve their mobility. Several wheelchair biomechanical parameters change during the learning process, especially wheelchair speed, handrim forces, motor force, rolling resistance and fore-aft stability. Fore-aft stability on the wheelchair rapidly reached the tipping limits for users. Technical solutions that preserve stability but do not hinder mobility have to beimplemented, for instance by adding anti-tipping wheels rather than moving the seat forwards with respect to the rear wheels axle. [ABSTRACT FROM AUTHOR]
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- 2020
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9. On the Influence of the Shoulder Kinematic Chain on Joint Kinematics and Musculotendon Lengths During Wheelchair Propulsion Estimated From Multibody Kinematics Optimization.
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Puchaud, Pierre, Hybois, Samuel, Lombart, Antoine, Bascou, Joseph, Pillet, Hélène, Fodé, Pascale, and Sauret, Christophe
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- 2019
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10. Identifying knee prosthesis characteristics during swing phase through optimization
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Pontonnier, Charles, Villa, Coralie, Bascou, Joseph, Ecoles de Saint-Cyr Coëtquidan [Guer], École normale supérieure - Rennes (ENS Rennes), Analysis-Synthesis Approach for Virtual Human Simulation (MIMETIC), Université de Rennes 2 (UR2)-Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-MEDIA ET INTERACTIONS (IRISA-D6), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Arts et Métiers ParisTech, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), CERAH, Institution Nationale des Invalides, Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Inria Rennes – Bretagne Atlantique, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Télécom Bretagne-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and HESAM Université (HESAM)
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InformationSystems_MODELSANDPRINCIPLES ,[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph] - Abstract
International audience; This work deals with the use of motion data in an optimization pipeline to retrieve the mechanical properties of a prosthesis.
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- 2016
11. 2-D geometric model of wheelchair adjustment
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Vaslin, Philippe, Ben Touhami, Haythem, Zhao, Jinhua, Sauret, Christophe, Bascou, Joseph, FODE, Pascale, LAVASTE, Francois, Laboratoire d'Informatique, de Modélisation et d'Optimisation des Systèmes (LIMOS), Ecole Nationale Supérieure des Mines de St Etienne-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Fonctionnement et conduite des systèmes de culture tropicaux et méditerranéens (UMR SYSTEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut de Biomecanique Humaine Georges Charpak, Université Paris 13 (UP13)-Arts et Métiers ParisTech, Laboratoire de biomécanique (LBM), Université Paris 13 (UP13)-Université Sorbonne Paris Cité (USPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), CERAH, Ecole Nationale Supérieure des Mines de St Etienne-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM), Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Sorbonne Paris Cité (USPC)-Université Paris 13 (UP13), Ecole Nationale Supérieure des Mines de St Etienne (ENSM ST-ETIENNE)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Vaslin, Philippe, Ecole Nationale Supérieure des Mines de St Etienne-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and Arts et Métiers ParisTech-Université Paris 13 (UP13)
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[PHYS.MECA.BIOM] Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph] ,[PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph] ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2014
12. Shoulder kinetics during start-up and propulsion with a manual wheelchair within the initial phase of uninstructed training.
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Hybois, Samuel, Siegel, Alice, Bascou, Joseph, Eydieux, Nicolas, Vaslin, Philippe, Pillet, Hélène, Fodé, Pascale, and Sauret, Christophe
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PHYSIOLOGICAL adaptation ,ARM ,DYNAMICS ,KINEMATICS ,LONGITUDINAL method ,REHABILITATION ,SHOULDER ,WHEELCHAIRS ,BODY movement ,MOTION capture (Human mechanics) - Abstract
Purpose:Wheelchair locomotion is constraining for the upper limbs and involves a set of motor tasks that need to be learnt by a novice user. To understand this integration process, we investigated the evolution of shoulder kinetics during start-up and propulsion within the initial phase of low-intensity uninstructed training. Materials and methods:Seventeen novice able-bodied subjects performed a 120-min uninstructed practice distributed over 4 weeks. During the initial and final sessions, upper limbs kinematics and hand-rim kinetics were continuously collected. Inverse kinematics and dynamics coupled to a three-dimensional linked-segment model were used to compute shoulder net moments. Results:Participants increased the speed of the wheelchair with practice. In average, an increase of shoulder net moments and mechanical work during the push phase was observed. Conversely, during the recovery phase, participants slightly increased shoulder power but maintained a similar level of shoulder loading. However, individual evolutions allowed the definition of two groups defined as: “increasers”, who increased shoulder loading and mechanical work versus “decreasers”, who managed to limit shoulder loading while improving the wheelchair speed. Conclusion:These findings underline that individual adaptation strategies are essential to take into account when designing a rehabilitation protocol for wheelchair users. Implications for RehabilitationThe learning process of manual wheelchair locomotion is essential for the assimilation of motor tasks leading individuals to select their propulsion technique.Novice users display different learning strategies: some people increase shoulder loading very early but others spontaneously manage to increase the wheelchair speed while maintaining a constant level of shoulder loading.Wheelchair rehabilitation programs should be individualized to take into account the subject-specific learning strategy. [ABSTRACT FROM PUBLISHER]
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- 2018
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13. A method for the field assessment of rolling resistance properties of manual wheelchairs, Computer Methods in Biomechanics and Biomedical Engineering
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BASCOU, Joseph, SAURET, Christophe, PILLET, Hélène, VASLIN, Philippe, THOREUX, Patricia, and LAVASTE, François
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deceleration test ,rolling resistance ,wheelchair ,3D accelerometer ,wheel ,rolling resistance parameters ,Mécanique: Biomécanique [Sciences de l'ingénieur] - Abstract
This article presents an examination and validation of a method to measure the field deceleration of a manual wheelchair (MWC) and to calculate the rolling resistances properties of the front and rear wheels. This method was based on the measurements of the MWC deceleration for various load settings from a 3D accelerometer. A mechanical model of MWC deceleration was developed which allowed computing the rolling resistance factors of front and rear wheels on a tested surface. Four deceleration sets were conducted on two paths on the same ground to test the repeatability. Two other deceleration sets were conducted using different load settings to compute the rolling resistance parameters (RPs). The theoretical decelerations of three load settings were computed and compared with the measured decelerations. The results showed good repeatability (variations of measures represented 6–11% of the nominal values) and no statistical difference between the path results. The rolling RPs were computed and their confidence intervals were assessed. For the last three sets, no significant difference was found between the theoretical and measured decelerations. This method can determine the specific rolling resistance properties of the wheels of a MWC, and be employed to establish a catalogue of the rolling resistance properties of wheels on various surfaces. The authors would like to thank the French National Research Agency (ANR) for its financial support to the SACR-FRM project (ANR-06-TecSan-020) and to the CERAH for the loan of all the manual wheelchairs evaluated in this work.
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- 2012
14. Mechanical simulations as a tool for assessing the influence of wheelchair settings on the propulsion efficiency
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Bascou, Joseph, Hybois, Samuel, Pillet, Hélène, Lavaste, François, and Sauret, Christophe
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- 2017
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15. Reliability of pressure insoles to assess normal ground reaction forces during gait of healthy people
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Villa, Coralie, Loiret, Isabelle, Dauriac, Boris, Bonnet, Xavier, Bascou, Joseph, Fode, Pascale, Martinet, Noel, Paysant, Jean, and Pillet, Hélène
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- 2017
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16. An instrumented manual wheelchair as a alternative to video analysis for validating locomotion task detection tools
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Sauret, Christophe, Carcel-Martinez, Guillermo, Bascou, Joseph, Pillet, Hélène, and Fodé, Pascale
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- 2017
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17. New-generation prosthetic feet: Comparative biomechanical evaluation and functional correlation in transtibial traumatic amputee during standing and walking
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Thomas-Pohl, Marie, Facione, Julia, Villa, Coralie, Bascou, Joseph, Bonnet, Xavier, Azoulay, Didier, Fode, Pascale, Lapeyre, Eric, Pillet, Hélène, Borrini, Léo, and Darmon, Linda
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- 2017
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18. A method for the field assessment of rolling resistance properties of manual wheelchairs.
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Bascou, Joseph, Sauret, Christophe, Pillet, Hélène, Vaslin, Philippe, Thoreux, Patricia, and Lavaste, François
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WHEELCHAIRS , *ACCELEROMETERS , *MUSCLE strength , *ENERGY dissipation , *SPEED measurements , *DIGITAL filters (Mathematics) - Abstract
This article presents an examination and validation of a method to measure the field deceleration of a manual wheelchair (MWC) and to calculate the rolling resistances properties of the front and rear wheels. This method was based on the measurements of the MWC deceleration for various load settings from a 3D accelerometer. A mechanical model of MWC deceleration was developed which allowed computing the rolling resistance factors of front and rear wheels on a tested surface. Four deceleration sets were conducted on two paths on the same ground to test the repeatability. Two other deceleration sets were conducted using different load settings to compute the rolling resistance parameters (RPs). The theoretical decelerations of three load settings were computed and compared with the measured decelerations. The results showed good repeatability (variations of measures represented 6–11% of the nominal values) and no statistical difference between the path results. The rolling RPs were computed and their confidence intervals were assessed. For the last three sets, no significant difference was found between the theoretical and measured decelerations. This method can determine the specific rolling resistance properties of the wheels of a MWC, and be employed to establish a catalogue of the rolling resistance properties of wheels on various surfaces. [ABSTRACT FROM PUBLISHER]
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- 2013
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19. Assessment of field rolling resistance of manual wheelchairs.
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Sauret, Christophe, Bascou, Joseph, de Saint Rémy, Nicolas, Pillet, Hélène, Vaslin, Philippe, and Lavaste, François
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COMPARATIVE studies , *HUMAN locomotion , *MECHANICS (Physics) , *PRESSURE , *PROBABILITY theory , *RESEARCH funding , *TORQUE , *WHEELCHAIRS , *PRODUCT design , *EVALUATION research , *ACCELEROMETRY , *DESCRIPTIVE statistics - Abstract
This article proposes a simple and convenient method for assessing the subject-specific rolling resistance acting on a manual wheelchair, which could be used during the provision of clinical service. This method, based on a simple mathematical equation, is sensitive to both the total mass and its fore-aft distribution, which changes with the subject, wheelchair properties, and adjustments. The rolling resistance properties of three types of front casters and four types of rear wheels were determined for two indoor surfaces commonly encountered by wheelchair users (a hard smooth surface and carpet) from measurements of a three-dimensional accelerometer during field deceleration tests performed with artificial load. The average results provided by these experiments were then used as input data to assess the rolling resistance from the mathematical equation with an acceptable accuracy on hard smooth and carpet surfaces (standard errors of the estimates were 4.4 and 3.9 N, respectively). Thus, this method can be confidently used by clinicians to help users make trade-offs between front and rear wheel types and sizes when choosing and adjusting their manual wheelchair. [ABSTRACT FROM AUTHOR]
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- 2012
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20. INFLUENCE OF FORE-AFT SEAT POSITION AND ROLLING DRAG FORCE ON WHEELCHAIR PROPULSIVE PERFORMANCE
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BASCOU, Joseph, SAURET, Christophe, PILLET, Hélène, BONNEFOY, Alice, and LAVASTE, François
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- 2012
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21. ASSESSING “POWER INPUT” OF THE MANUAL WHEELCHAIR USER DURING REAL LIFE AMBULATION
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Sauret, Christophe, Bascou, Joseph, Pillet, Hélène, Lavaste, François, and Vaslin, Philippe
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- 2012
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22. Estimation of 3D Body Center of Mass Acceleration and Instantaneous Velocity from a Wearable Inertial Sensor Network in Transfemoral Amputee Gait: A Case Study.
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Simonetti, Emeline, Bergamini, Elena, Vannozzi, Giuseppe, Bascou, Joseph, Pillet, Hélène, and Najafi, Bijan
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CENTER of mass ,SENSOR networks ,HUMAN kinematics ,STANDARD deviations ,VELOCITY ,AMPUTEES ,MOTION capture (Human mechanics) - Abstract
The analysis of the body center of mass (BCoM) 3D kinematics provides insights on crucial aspects of locomotion, especially in populations with gait impairment such as people with amputation. In this paper, a wearable framework based on the use of different magneto-inertial measurement unit (MIMU) networks is proposed to obtain both BCoM acceleration and velocity. The proposed framework was validated as a proof of concept in one transfemoral amputee against data from force plates (acceleration) and an optoelectronic system (acceleration and velocity). The impact in terms of estimation accuracy when using a sensor network rather than a single MIMU at trunk level was also investigated. The estimated velocity and acceleration reached a strong agreement (ρ > 0.89) and good accuracy compared to reference data (normalized root mean square error (NRMSE) < 13.7%) in the anteroposterior and vertical directions when using three MIMUs on the trunk and both shanks and in all three directions when adding MIMUs on both thighs (ρ > 0.89, NRMSE ≤ 14.0% in the mediolateral direction). Conversely, only the vertical component of the BCoM kinematics was accurately captured when considering a single MIMU. These results suggest that inertial sensor networks may represent a valid alternative to laboratory-based instruments for 3D BCoM kinematics quantification in lower-limb amputees. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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23. Three-dimensional acceleration of the body center of mass in people with transfemoral amputation: Identification of a minimal body segment network.
- Author
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Simonetti, Emeline, Bergamini, Elena, Bascou, Joseph, Vannozzi, Giuseppe, and Pillet, Hélène
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PELVIS , *WALKING , *RANGE of motion of joints , *OPTOELECTRONIC devices , *BIOMECHANICS , *RESEARCH , *MOTION , *GAIT in humans , *RESEARCH methodology , *MEDICAL cooperation , *EVALUATION research , *AMPUTEES , *COMPARATIVE studies , *AMPUTATION , *KINEMATICS - Abstract
Background: The analysis of biomechanical parameters derived from the body center of mass (BCoM) 3D motion allows for the characterization of gait impairments in people with lower-limb amputation, assisting in their rehabilitation. In this context, magneto-inertial measurement units are promising as they allow to measure the motion of body segments, and therefore potentially of the BCoM, directly in the field. Finding a compromise between the accuracy of computed parameters and the number of required sensors is paramount to transfer this technology in clinical routine.Research Question: Is there a reduced subset of instrumented segments (BSN) allowing a reliable and accurate estimation of the 3D BCoM acceleration transfemoral amputees?Methods: The contribution of each body segment to the BCoM acceleration was quantified in terms of weight and similarity in ten people with transfemoral amputation. First, body segments and BCoM accelerations were obtained using an optoelectronic system and a full-body inertial model. Based on these findings, different scenarios were explored where the use of one sensor at pelvis/trunk level and of different networks of segment-mounted sensors for the BCoM acceleration estimation was simulated and assessed against force plate-based reference acceleration.Results: Trunk, pelvis and lower-limb segments are the main contributors to the BCoM acceleration in transfemoral amputees. The trunk and shanks BSN allows for an accurate estimation of the sagittal BCoM acceleration (Normalized RMSE ≤ 13.1 %, Pearson's correlations r ≥ 0.86), while five segments are necessary when the 3D BCoM acceleration is targeted (Normalized RMSE ≤ 13.2 %, Pearson's correlations r ≥ 0.91).Significance: A network of three-to-five segments (trunk and lower limbs) allows for an accurate estimation of 2D and 3D BCoM accelerations. The use of a single pelvis- or trunk-mounted sensor does not seem advisable. Future studies should be performed to confirm these results where inertial sensor measured accelerations are considered. [ABSTRACT FROM AUTHOR]- Published
- 2021
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24. How Was Studied the Effect of Manual Wheelchair Configuration on Propulsion Biomechanics: A Systematic Review on Methodologies.
- Author
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Fritsch C, Poulet Y, Bascou J, Thoreux P, and Sauret C
- Abstract
Background: For both sports and everyday use, finding the optimal manual wheelchair (MWC) configuration can improve a user's propulsion biomechanics. Many studies have already investigated the effect of changes in MWC configuration but comparing their results is challenging due to the differences in experimental methodologies between articles., Purpose: The present systematic review aims at offering an in-depth analysis of the methodologies used to study the impact of MWC configuration on propulsion biomechanics, and ultimately providing the community with recommendations for future research., Methods: The reviewing process followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flowchart on two databases (Scopus and PubMed) in March 2022., Results: Forty-five articles were included, and the results highlighted the multiplicity of methodologies regarding different experimental aspects, including propulsion environment, experimental task, or measurement systems, for example. More importantly, descriptions of MWC configurations and their modifications differed significantly between studies and led to a lack of critical information in many cases., Discussion: Studying the effect of MWC configuration on propulsion requires recommendations that must be clarified: (1) the formalism chosen to describe MWC configuration (absolute or relative) should be consistent with the type of study conducted and should be documented enough to allow for switching to the other formalism; (2) the tested MWC characteristics and initial configuration, allowing the reproduction or comparison in future studies, should be properly reported; (3) the bias induced by the experimental situation on the measured data must be considered when drawing conclusions and therefore experimental conditions such as propulsion speed or the effect of the instrumentation should be reported., Conclusion: Overall, future studies will need standardization to be able to follow the listed recommendations, both to describe MWC configuration and mechanical properties in a clear way and to choose the experimental conditions best suited to their objectives., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Fritsch, Poulet, Bascou, Thoreux and Sauret.)
- Published
- 2022
- Full Text
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