BIO-MECHANICS

Study of the biological systems by means of methods of mechanics.

1. ROHIT J NABARIYA SURENDRA KUMAR Biomechanics

2. INTRODUCTION Mechanics-study of forces and motions produced by their action. Biomechanics  is the study of the structure and function of biological systems by means of the methods of “mechanics.” Biomechanics-apply that to the structure and function of the human body.

3. Mechanics Study of physical actions and forces Kinematics: Description of motion ( e.g : how fast, how high, etc.) without consideration given to its mass or the forces acting on it. Kinetics: The study of forces associated with motion. Example: Pushing on the table may or may not move the table, depending upon the strength and direction of the push

4. Reasons for Studying Biomechanics Better understanding of the human body and the various internal and external forces that affect movement. Offers scientific knowledge that can improve performance To improve sport techniques, equipment, and safety To design and conduct programs to enhance individual movement skills (Adapted PE)

5. AREAS OF BIOMECHANICS Developmental biomechanics Studies movement patterns and how they change across the lifespan and varying disabilities. Biomechanics of exercise To maximize the benefits of exercise and reduce the chances of injury. Rehabilitation mechanics Study of the movement patterns of people who are injured or who have a disability. Equipment design Increases in performance through the change of equipment.

6. Biomechanical Terms Velocity Speed and direction of the body Acceleration Change in velocity involving the speed or direction Angular velocity Angle that is rotated in a given unit of time Angular acceleration Change of angular velocity for a unit of time

7. Mass Amount of matter possessed by an object Force Any action that changes or tends to change the motion of an object Pressure Ratio of force to the area over which force is applied Gravity Natural force that pulls all objects toward the center of the earth Center of gravity

8. Friction Force that occurs when surfaces come in contact and results from the sliding of one surface on the other Simple Machines 4 types of Machines Lever Wheel and Axle Inclined plane The pulley

9. LEVER Lever is a rigid bar that can rotate about a fixed point when a force is applied to overcome resistance. TERMS INVOVLED IN LEVERS: The axis (joint), force (muscle insertion point), and the resistance (weight, etc.)

10. First-class lever Axis is located between the force and the resistance. Balance Examples Crow bar Seesaw

11. Second Class Lever Has the axis at one end, the resistance in the middle, and force at the other end. Examples Wheelbarrow Nutcracker

12. Third class Lever Has the axis at one end with the force in the middle and resistance at the opposite. Examples Rowing Shoveling Bat, tennis racket

13. Human Application First class lever

14. Second class lever Ankle plantar flexion

15. Third class lever Elbow flexion

16. APPLICATION IN SPORTS Sports biomechanics  is a quantitative based study and analysis of professional athletes and  sports activities in general. It can simply be described as the Physics of  Sports . Sport biomechanics studies the effects of forces and motion on sport performance. Using laws and principles grounded in physics that apply to human movement, athletes and coaches can make sound decisions for developing efficient sport techniques.

17. The key to success is finding effective instructional cues that help the athlete achieve correct mechanical technique.  Coaches with a command of mental training tools and sports training principles can help athletes make amazing things happen on the field.

18. COACHES/TRAINERS can: Analyze sport movements, Select the best training exercises, Reduce or prevent injuries, Design or choose the sport equipment that best matches athletes' personal needs.  Maximize economy and efficiency of movements .

19. SPRINT

20. DENTAL IMPLANTATION

21. According to the National Institutes of Health, by age 50, the average person has lost 12 teeth, and by 70, half of us are toothless altogether. WHY IMPLANT??????????? • More permanent than dentures • The butt-joint method does not rely on neighboring teeth for support • More natural looking than dentures.

22. The Butt-Joint system (Screw) Dental Implants The Ideal Replacement For Natural Teeth

23. General Implant Diagram A crucial factor that affects the outcome of implant treatment is the way occlusal forces are transferred to the bone-implant interface via the superstructure and the implant.

24. REFERENCES Wikipedia  Hatze, Herbert (1974). "The meaning of the term biomechanics". Journal of Biomechanics  Bartlett, Roger (1997). Introduction to sports biomechanics

25. THANK YOU