Presentation Medicon Data April 2016 CITATIONS READS 0 31 5 - PDF document

See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/301295845 Presentation Medicon Data · April 2016 CITATIONS READS 0 31 5 authors , including: Mariam Al Harrach Sofiane Boudaoud Université de Rennes 1 Université de Technologie de Compiègne 33 PUBLICATIONS 117 CITATIONS 71 PUBLICATIONS 429 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: SIMOVI View project Functional Data Analysis of Biomedical Data View project All content following this page was uploaded by Mariam Al Harrach on 15 April 2016. The user has requested enhancement of the downloaded file.

Estimation of the relationship between external Biceps Brachii deformation and isometric contraction level using Motion Capture technique Mariam AL HARRACH (Ph.D. Student) Biomechanical and Bioengineering Laboratory (BMBI) University of technology of Compiegne (UTC)

18/03/2016 Outline • Introduction • Experimental protocol • Data analysis • Results • Conclusion and perspectives 2 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 Introduction • Motion capture is usually used in entertainment: sport, video games, movies … • Architectural parameters were proven to provide complementary information for muscle functionality assessment I n t h i s s t u d y w e propose to use Motion Capture technique in order to monitor the 3D curvature change of the Biceps Brachii (BB) 3 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 Experimental protocol • Subjects: ▪ Number of subjects: 5 ▪ Gender: male ▪ Age: 27.2 ± 2 years ▪ Stature: 176.8 ± 4.7 cm ▪ Body mass: 73.8 ± 2.3 kg ▪ Body Mass Index (BMI): 23.2 ± 1.7 All participants provided their written consent respecting the declaration of Helsinki and did not relate any history of muscular or neurophysiological problem at the upper limbs. 4 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 • Sonography ▪ Transversal: to measure the muscle length (L) ▪ Longitudinal: to measure the muscle width (l) The transversal and longitudinal panoramic sonography images used to mark the boundaries of the Biceps Brachii 5 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 • Global Setup Setup for the simultaneous collection of the muscle force and the motion data 6 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 • Motion Capture system: • Markers ▪ Number of markers: 41 ▪ Type: reflective markers ▪ Diameter: 4mm • Markers placement ▪ Marker set ▪ Additional markers: • C7 • acromion • medial and lateral epicondyle • clavicle, radius • four markers on the force sensor cord 7 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 • Cameras ▪ 18 infrared cameras T160 ▪ 16 Megapixel ▪ 100 frames/s. • Software ▪ Nexus 1.7.1 8 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 Force acquisition System: A customized ergometer using a preacher curl bench • • Labview interface • Strain gauge (S-Beam SB2500) Feedback 9 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 • Protocol description Measure length and width of the Biceps Brachii (BB) by ultrasound Set markers Measure the maximum Voluntary contraction (MVC) Record four x 3 isometric constant contractions: 20, 40, 60 and 80% of MVC. 10 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 Data analysis • 11 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 Results 0% MVC 80% MVC The 3D surface fitting of the surface of the biceps The ellipsoid fitting of the 3D marker positions for two contraction levels: 20 and 80%MVC 12 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 The 3D positions of the 9 markers of the middle line The four ellipses corresponding to the fitting of the 9 markers Ellipse parameters a and b for all subjects. 13 Mariam AL HARRACH

Introduction Experimental protocol Data Analysis Results Conclusion 18/03/2016 Conclusion and perspectives It seems we have monotonic relationship between the curvature of the • BB and the contraction level. • BMI is primordial in this work This study presents a complimentary information for the force • estimation models • Further work will include more in depth processing of the markers position by incorporation more modalités and subjects. 14 Mariam AL HARRACH

18/03/2016 Thank you for your attention 15 Mariam AL HARRACH View publication stats View publication stats