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Introduction to Kinesiology & Biomechanics

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Presentation on theme: "Introduction to Kinesiology & Biomechanics"— Presentation transcript:

1 Introduction to Kinesiology & Biomechanics

2 Definitions Kinesiology Biomechanics

3 Definitions Kinematics Kinetics

4 Definitions Static Analysis Dynamics Analysis

5 Definitions Anthropometrics

6 Why study biomechanics?
Biomechanist vs Applied Biomechanist Sports Performance Ergonomics Injury Prevention Improved Rehabilitation

7 Ways to Solve Biomechanical Problems
Qualitative vs Quantitative Scalar vs Vector Quantities

8 Basic Structural Analysis
Stress-Strain Curve Stress Strain Key Points on Curve Elastic Modulus Yield Point Plastic Region Elastic Region Residual Strain Failure Safety Factor Mechanical Energy

9 Basic Structural Analysis
Stress-Strain Curve Stress Strain Key Points on Curve Elastic Modulus Yield Point Plastic Region Elastic Region Residual Strain Failure Safety Factor Mechanical Energy

10 Basic Structural Analysis
Stress-Strain Curve Stress Strain Key Points on Curve Elastic Modulus Yield Point Plastic Region Elastic Region Residual Strain Failure Safety Factor Mechanical Energy = ½ stress * strain Area under the curve

11 Types of Materials Elastic Linear relationship between stress & strain

12 Types of Materials Viscoelastic Nearly all biologic tissues
Manifestations of Viscoelastic Properties Rate of Loading Hysteresis Creep

13 Types of Materials Viscoelastic Nearly all biologic tissues
Manifestations of Viscoelastic Properties Rate of Loading Hysteresis Creep

14 Types of Materials Viscoelastic Nearly all biologic tissues
Manifestations of Viscoelastic Properties Rate of Loading Hysteresis Creep

15 Types of Materials Viscoelastic Nearly all biologic tissues
Manifestations of Viscoelastic Properties Rate of Loading Hysteresis Creep

16 Material Characteristics
Stiff Compliant Brittle

17 Review Anatomical Terms
Directional Terms Superior/Inferior Proximal/Distal Anterior/Posterior Medial/Lateral Superficial/Deep Movement Terms Flexion/Extension Abduction/Adduction Horizontal Abduction/Hor. Adduction Internal Rotation/External Rotation Radial Deviation/Ulnar Deviation Supination/Pronation Inversion/Eversion

18 Reference Systems

19 Reference Systems Why? Absolute vs Relative Absolute Reference Frame
Segments intersect in joint center & movement of segment is described with respect to that joint

20 Reference Systems Why? Absolute vs Relative Absolute Reference Frame
Relative Reference Frame Movement of segment described relative to adjacent segment

21 Reference Systems Spatial Reference Frame
Movement of body relative to ground Occurs in xyz directions x Up (+) Forward (+) z Down (-) Backward (-) y Left (+) Right (-)

22 Reference Systems Cartesian Coordinate System Fixed reference point
x,y and z coordinates

23 Anatomical Planes & Axes
Plane of Motion 2 dimensional flat surface Axis point about which movement occurs perpendicular to the plane of movement Whole Body Planes and Axes Segmental Planes and Axes

24 Anatomical Planes

25 Planes of movement Sagittal left/right halves
Perpendicular Axis - Frontal or Mediolateral

26 Planes & Axes Frontal Plane Anterior/posterior halves
Axis - Anteroposterior or Sagittal

27 Planes & Axes Transverse Plane Upper/lower halves Axis - Longitudinal

28 Other Planes and axes Diagonal or Oblique plane of movement
perpendicular to the plane how to find


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