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INTRODUCTION TO BIOMECHANICS FORCE

INTRODUCTION TO BIOMECHANICS FORCE. Week 6. Key Content. What is biomechanics? Performance analysis Equipment Benefits of biomechanics Force production Types of force Force summation. What is Biomechanics?.

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INTRODUCTION TO BIOMECHANICS FORCE

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  1. INTRODUCTION TO BIOMECHANICSFORCE Week 6

  2. Key Content • What is biomechanics? • Performance analysis • Equipment • Benefits of biomechanics • Force production • Types of force • Force summation

  3. What is Biomechanics? • The study of how the physical laws of mechanics and physics apply to the ________ ________ • Why? • Improve ___________ • How injuries occur • Injury ___________ and rehabilitation • Design and development of ___________

  4. Performance Analysis • Evaluating quality of performance and developing better practices • Quantitative (main method) and qualitative • Permanent record (eg: video) • Systematic observation of performance • Analysis of selected aspects

  5. Equipment • Technologically driven • Huge advances in recent years • Read through information on page 51

  6. Benefits of Biomechanics • Jot down some of benefits from page 51

  7. Force Production • Force is any ___________ or ___________ activity that tends to alter the state of motion of a body • The body could be a human body, ball, discus, javelin, racquet, bat, etc • The force can get the body to: • Move • Speed it up • Slow it down • Stop • Change direction

  8. Types of Forces • Force without motion – isometric force • Force with motion – isotonic force • Sub-maximal force • Maximal force

  9. Force without Motion • Isometric force • Isometric contraction • Muscle length does not ___________ • Eg: pushing against a wall, gripping a cricket bat

  10. Force with Motion • Isotonic force • Isotonic contraction • Muscle length ___________ • Changes the state of motion of the object (body) • Eg: shot put, taking a catch in cricket, diving into a pool

  11. Sub-maximal Force • Force needs to be at an optimal level for successful performance • Sometimes we want less than maximum force • Eg: tennis drop shot, chip in golf, basketball lay-up

  12. Maximal Force • Some activities require maximal force for a higher chance of success • This usually happens through combination of a number of forces – force summation • Eg: high jump, javelin, throw from the outfield in softball

  13. Force Summation • Combination of forces to produce a maximal force • 2 types • Simultaneously: explosive action of all body parts occurs at the same time • Eg: high jump take-off, vertical jump for rebound in basketball • Sequentially: body parts are moved in sequence to generate a great force • Eg: throwing, striking, kicking

  14. Simultaneously…sequentially

  15. Sequential Force Summation • What are the 4 parts to a sequential force summation technique (page 54) • Write down (or draw) the steps in force summation for a throw from the outfield in softball

  16. Homework Task • Answer the following questions 1. Pick one benefit of biomechanics for a sport of your choice and discuss in detail 2. For the same sport analyse and discuss in detail one form of equipment that has used biomechanics 3. Describe the sequence of body parts in the force summation for a tennis serve

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