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Chap 1. Biomechanics as an Interdiscipline

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    Chap 1. Biomechanics as an Interdiscipline Chap 1. Biomechanics as an Interdiscipline Presentation Transcript

    • Chap 1. Biomechanics as an Interdiscipline
    • 1. INTRODUCTION
      • Biomechanics: Interdisciplinary study
      • Orthopaedic surgeons, athletic coaches, rehab engineers, therapists, kinesiologists, prosthetists, psychiatrists, orthotists, sports equipment designers etc.
      • Kinesiology
      • Psychology, exercise physiology, biomechanics
    • 1.1 Measurement, Description, Analysis and Assessment
    • 1.1.1 Measurement, Description, and Monitoring
      • Earlier biomechanical studies
        • Visual inspection
          • Pen recorder curves,
          • plots of body coordinates,
          • stick diagrams,
          • simple outcome measures
          • gait velocity, load lifted, height of a jump
        • Movie camera
    •  
    • Motion Analysis Laboratory, Dept. of Biomedical Engineering, Yonsei Univ. CCD Camera 1 CCD Camera 2 IR CCD 1 IR CCD 6 IR CCD 5 IR CCD 4 IR CCD 3 IR CCD 2 EMG ( 10Ch ) S - VHS Video Data Station ( 64 Ch ) High Speed Ethernet Connection Color Monitor PC Color Printer Graphics Color Monitor Force Plate (400 X 600, 4ea) ANAM
    • 1.1.2 Analysis
      • Calibration, removal of noise and artifacts
      • Mathematical operation
      • EMG
        • Raw data envelope
        • Full-wave rectification
        • Low-pass filter
      • Link-segment model with kinematic, anthropometric and kinetic data
      • Inverse dynamics to find joint force and moment
    •  
    •  
    • 1.1.3 Assessment and Interpretation
      • Positive or negative decision
    • 1.2 BIOMECHANICS AND ITS RELATIONSHIP WITH PHYSIOLOGY AND ANATOMY
      • Interaction with other areas of movement science
      • Neurophysiology, exercise physiology, anatomy
      Neuromuscular system Release of metabolic energy Tension at the tendon
      • Physiologic characteristic of muscle
      • (rested or fatigued)
      • In the presence of passive anatomical structures
      • (ligaments, articulating surfaces, skeletal structures
    • Neuromusculoskeletal Integration
      • sensory system
      • neurological pathways
      • muscles
      • skeletal system
      • the link-segment model
      • α -motoneuron
        •  Final common pathway
          • Synapse on the motor end point of muscle motor unit
        •  Summation of all twitches from all active motor units at the level of tendon
          • Neural recruitment of motor units based on the size principle
          • The resultant tension is a temporal superposition of twitches of all active motor units by the length-velocity characteristics of the muscle
        •  Musculoskeletal integration:
        •  Intersegmental integration (synergy)
          • Support moment
      Neuromusculoskeletal Integration
    • 1.3 SCOPE OF THE TEXTBOOK
      • KINEMATICS
      • KINETICS
      • ANTHROPOMETRY
      • MUSCLE MECHANICS
      • ELECTROMYOGRAPHY