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

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

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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

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SLIDE 1

See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/301295845

Presentation Medicon

Data · April 2016

CITATIONS READS

31

5 authors, including: 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 Mariam Al Harrach Université de Rennes 1

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Sofiane Boudaoud Université de Technologie de Compiègne

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All content following this page was uploaded by Mariam Al Harrach on 15 April 2016.

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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)

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Mariam AL HARRACH

Outline

  • Introduction
  • Experimental protocol
  • Data analysis
  • Results
  • Conclusion and perspectives

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Mariam AL HARRACH

Introduction

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  • 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

  • rder to monitor the

3D curvature change

  • f the Biceps Brachii

(BB)

Experimental protocol Introduction Data Analysis Results Conclusion

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Mariam AL HARRACH

Experimental protocol

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  • 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.

Data Analysis Experimental protocol Results Conclusion Introduction

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Mariam AL HARRACH

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  • 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

Data Analysis Results Conclusion Experimental protocol Introduction

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Mariam AL HARRACH

  • Global Setup

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Setup for the simultaneous collection

  • f the muscle force and the motion

data

Data Analysis Results Conclusion Experimental protocol Introduction

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Mariam AL HARRACH

  • 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

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Data Analysis Results Conclusion Experimental protocol Introduction

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Mariam AL HARRACH

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  • Cameras

▪ 18 infrared cameras T160 ▪ 16 Megapixel ▪ 100 frames/s.

  • Software

▪ Nexus 1.7.1 Data Analysis Results Conclusion Experimental protocol Introduction

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Mariam AL HARRACH

Force acquisition System:

  • A customized ergometer using a preacher curl bench
  • Labview interface
  • Strain gauge (S-Beam SB2500)

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Feedback Data Analysis Results Conclusion Experimental protocol Introduction

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Mariam AL HARRACH

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  • Protocol description

Data Analysis Results Conclusion Experimental protocol Introduction

Measure length and width of the Biceps Brachii (BB) by ultrasound Set markers Measure the maximum Voluntary contraction (MVC) Record four isometric constant contractions: 20, 40, 60 and 80% of MVC.

x 3

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Mariam AL HARRACH

Data analysis

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Results Data Analysis Conclusion Experimental protocol Introduction

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Mariam AL HARRACH

Results

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Data Analysis Conclusion Results Experimental protocol Introduction

The ellipsoid fitting of the 3D marker positions for two contraction levels: 20 and 80%MVC The 3D surface fitting of the surface of the biceps

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Mariam AL HARRACH

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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.

Conclusion Data Analysis Results Experimental protocol Introduction

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Mariam AL HARRACH

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.

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Data Analysis Results Conclusion Experimental protocol Introduction

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Mariam AL HARRACH

Thank you for your attention

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