WHAT IS BIOMECHANICS?

Application of mechanical principles in the study of living organisms

1. Bio-Mechanics

2. WHAT IS BIOMECHANICS? Application of mechanical principles in the study of living organisms

3. What is Mechanics? Mechanics is the branch of physics that studies the motion of objects and the forces that cause that motion.

4. Braches of Mechanics Deformable-body Fluids Rigid-body

5. Deformable-body Deformable-body mechanics studies how forces are distributed within a material, and can be focused at many levels (cellular to tissues/organs/ system ) to examine how forces stimulate growth or cause damage

6. Fluid mechanics it is concerned with the forces in fluids ( liquids and gasses). A biomechanist would use fluid mechanics to study heart valves , swimming , or adapting sports equipment to minimize air resistance.

7. Rigid-body Mechanics The object being analyzed is assumed to be rigid and the deformations in its shape so small they can be ignored. While this almost never happens in any material, this assumption is quite reasonable for most biomechanical studies of the major segments of the body

8. Statics The study of objects at rest or in uniform ( constant) motion.

9. Dynamics 1.Branch of mechanics dealing with systems subject to acceleration 2.The study of objects being accelerated by the actions of forces. Most importantly , Dynamics is divided into two branches:

10. Kinematics In kinematics the motions of objects are usually measured in linear (meters, feet, etc.) or angular (radians, degrees, etc.) terms.

11. Kinetics is the study of forces, including internal forces (muscle forces) and external forces (the forces of gravity and the forces exchanged by bat and ball). kinetics 12

12. Anthropometry A head-measuring tool designed for anthropological research in the early 1910s. Theodor Kocher w as inventor of the craniometer 13 The science that deals with the measure of size, mass, shape, and inertia properties of the human body

13. Qualitative : pertaining to quality (without the use of numbers ) e.g. strong, skillful, agile, flexible, fast Q uantitative : involving numbers  For example: running speed = 5 m/s  height = 1.75 m mass = 68.2 kg Qualitative vs. Quantitative 14

14. Quantitatively , the robot missed the coffee cup by 15 cm. Qualitatively , he malfunctioned. 16

15. Scientific inquiry addressed by bio-mechanists

16. Thanks