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A. Leigh BTEC FIRST – Diploma in Sport The Body in Sport The Muscular System Resource Pack Level 2 -1- A. Leigh Introduction to the Unit Guided learning hours: 60 Unit abstract A healthy body is an amazing piece of machinery which allows us to go from total rest to all out sprinting in a matter of seconds. Trained sports people are able to run, cycle and swim marathon distances. This ability is due to the efficiency of the physiological (how the body functions) systems that work together to allow such activity. An understanding of these systems is essential in the sport and exercise industries in order to begin to appreciate how the body copes with the stress of exercise, why we cannot continue to exercise indefinitely, and how we can train these systems. This unit explores the foundations of anatomy and physiology. It provides the learner with an understanding of the structure and function of the skeletal, muscular, cardiovascular and respiratory systems. The short and long-term effects of exercise on each of these systems are examined. Wherever possible, examples of sports and exercises particular to learners’ specific pathways should be used. An outline of the energy systems and the energy requirements of a range of sports is also covered. This part of the unit is only intended to provide the learner with the ability to recognise which sports use either the aerobic or the anaerobic energy systems and which ones require more energy than others. Learning outcomes On completion of this unit a learner should: Understand the muscular system and how it is affected by exercise This is very important page since it tells you EXACTLY what you need to include in your assignments! Unit content Understand the muscular system of the body and how it is affected by exercise Major muscles: triceps; biceps; quadriceps; hamstrings; deltoids; gluteus maximus; gastrocnemius; abdominals; obliques; pectorals; trapezius; erector spinae; classification; location. Types of muscle: voluntary (skeletal); involuntary (smooth); heart (cardiac). Muscle movement: tendons; antagonistic pairs; types of movement (concentric, eccentric, isometric). Effects of exercise: short-term effects of exercise eg break down of muscle tissue; long-term effects of exercise eg hypertrophy. -2- A. Leigh In order to pass this unit, the evidence that the learner presents for assessment needs to demonstrate that they can meet all of the learning outcomes for the unit. The criteria for a pass grade describe the level of achievement required to pass this unit. To achieve a pass grade the evidence must show that the learner is able to: P1 describe the structure and function of the skeleton, and how bones grow P2 identify the effects of exercise on bones and joints P3 describe the different types of muscle, the major muscles in the body, and how muscles move P4 identify the effects of exercise on skeletal muscles P5 describe the structure and function of the cardiovascular system and how it is affected by exercise P6 describe the structure and function of the respiratory system and how it is affected by exercise P7 identify two types of physical activity that use the aerobic energy system and two that use the anaerobic energy systems. -3- To achieve a merit grade the evidence must show that, in addition to the pass criteria, the learner is able to: M1 identify the movement occurring at synovial joints during three different types of physical activity M2 explain the effects of exercise on bones and joints M3 give examples of different types of muscular contraction relating to four different types of physical activity M4 explain the effects of exercise on the cardiovascular system M5 explain the effects of exercise on the respiratory system M6 explain the energy requirements of four different types of physical activity. To achieve a distinction grade the evidence must show that, in addition to the pass and merit criteria, the learner is able to: D1 analyse four sporting movements, detailing the musculoskeletal actions occurring, and the contractions that are necessary D2 analyse the effects of exercise on the musculoskeletal system D3 analyse the effects of exercise on the cardiorespiratory system. A. Leigh BTEC First Diploma in Sport Unit 1 The Body in Sport Assessment Part 1 Assignment Context You are completing a work experience placement with the PE Department at a Bolton Secondary School. The Head of PE has asked you to produce a set of teaching aids for pupils, which will develop their knowledge and understanding of the body in sport. Date Issued: ______________________ Date to be submitted by: ______________________ -4- A. Leigh THE BODY IN SPORT ASSIGNMENT Part One Scenario You are completing a work experience placement with the PE Department at a Bolton Secondary School. The Head of PE has asked you to produce a teaching aid for pupils, which will develop their knowledge and understanding of the muscular and skeletal systems and their roles in sporting activity. Key Skills C2.1a C2.1b C2.2 C2.3 Learning Outcomes Outcome 1 – Understand the skeleton and how it is affected by exercise Outcome 2 – Understand the muscular system and how it is affected by exercise Tasks: Produce a teaching resource using relevant diagrams and pictures, which describes and explains the structure and functions of the muscular and skeletal systems. In order to achieve a Merit Grade, you must: In order to achieve a DISTINCTION grade, you must ALSO: Describe the structure and function of the skeleton, and how bones grow (ossification) (P1) Identify the movement types occurring at the major synovial joints during three different types of physical activity e.g. Over-arm cricket bowl; Hockey Push Pass; Breast-stroke arm pull. (M1) Analyse the 4 sporting movements, detailing the muscular and skeletal actions and contractions necessary (D1) Describe the different types of muscle, the major muscles in the body, and how muscles move. (P3) Explain the effects of exercise on bones and joints. (M2) Analyse the effects of exercise on the muscular and skeletal systems (D2) Identify the effects of exercise on skeletal muscles and on bones & joints (P2 / P4) Give examples of different types of muscular contraction from 4 different physical activities (M3) To achieve a PASS grade: -5- A. Leigh SUGGESTED DELIVERY AND ACTIVITY SCHEDULE Session Number 1. 2. 3. 4. 5. Introduction to the BTEC (Business and Technology Education Council) course, assessment criteria and pupil responsibilities. Skeletal system – identify specific, major bones. Skull, sternum, ribs, vertebral column, clavicle, scapula, humerus, radius, ulna, pelvis, femur, tibia, fibula, patella The vertebral column. Understand that different bones have specific functions. Classification of bones (flat, long, irregular and short) Function of the skeleton. Structure and growth of bones. Worksheet / Resources Labels. Worksheets 1 & 2 Worksheets 3 & 4 Worksheets 5,6,7 & 8 Worksheets 9, 10, 11 & 12 7. Joints (fixed, slightly moveable, freely moveable). Diagram of synovial joint. Ligaments and cartilage. Practical Diary work. 8. Recap Synovial joints. Classification of synovial joints 9. 10. Summary/ revision/ catch up Test 11. Research – The skeleton in sport 12. 13. Poster presentation - The skeleton in sport Practical Diary work. Give out assignment 1 Produce a teaching resource using relevant diagrams and pictures, which describes and explains the structure and functions of the muscular and skeletal systems. Types of movement at each joint - Extension, Flexion, rotation, Worksheets abduction, adduction. 15 & 16 Research movement in sport giving key words of Extension, Flexion, Worksheet 17 rotation, abduction, adduction. Movement in sports - notes The effects of exercise on the Skeletal System research Worksheet 18 The effects of exercise on the Skeletal System class work Practical Diary work. Muscular System – identify specific, major muscles. triceps; biceps; Worksheet quadriceps; hamstrings; deltoids; gluteus maximus; gastrocnemius; M1 abdominals; obliques; pectorals; trapezius; erector spinae. Functions of the muscular system. Muscle types – cardiac, Worksheets involuntary, voluntary. The structure of a muscle. M2 & M3 Worksheet How muscles move. M4a & M4b Practical Diary work. Muscles in action. Agonists and antagonists. Concentric, eccentric Worksheets and isometric. Functions of muscles in different sports M5 & M6 Worksheets Skeletal muscle fast twitch, slow twitch link to sporting actions. M7, M8 & M9 Worksheets M10 The effects of exercise on the muscular system M10 6. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. -6- Subject area Worksheets 13, 14a & 14b, Access to the internet A. Leigh 28. 29. 30. 31. Practical Diary work. Summary/ revision/ catch up Classroom work on assignment Classroom work on assignment. Dead line for assignment 1 The heart and blood circulation “The Cardio-vascular System”. 32. Understanding the basic concepts of pulse, blood pressure. The basic functions – thermoregulation, transport. 33. The Circulatory System – structure of the heart. 34. Practical Diary work. Give out assignment 2 Design a series of posters for wall display, which outline the structures and functions of the cardio-vascular & respiratory systems. Diagrams and photographs should be included to make this a visual learning aid. The structure and function of Veins, Arteries and capillaries. 35. Include arterioles and venuoles. The effects of exercise on the cardiovascular system. Practical 36. Lesson. The effects of exercise on the cardiovascular system. Short-term effects of exercise eg increased heart rate, increased blood 37. pressure; long-term effects of exercise eg decreased resting heart rate, increased stroke volume, increased size of heart. The basic mechanisms of breathing. Practical lesson showing lung 38. volume, elasticity etc. Basic functions. Understand the structure of the respiratory system understanding 39. the role of the: epiglottis; trachea; bronchus; bronchioles; alveoli; diaphragm; intercostal muscles. Draw diagrams etc. 40. Practical Diary work. Practical session showing how the respiratory system responds to 41. exercise. 42. Research and notes on how the body responds to exercise. 43. Summary/ revision/ catch up / test 44. Classroom work on assignment 2 45. Classroom work on assignment 2 Dead line for assignment 2 Understand what is meant by the term ‘energy’ and how this relates 46. to the cardio-respiratory system Give out assignment 3. Produce a leaflet that will help pupils understand the basic principles of exercising using the aerobic and anaerobic energy systems. 47. Practical lesson on the energy demands of different activities. 48. Aerobic Respiration 49. Alactic and anaerobic respiration. Research lesson of different sporting activities that require 50. different energy supplies. Link briefly to diet and calorific values. 51. Summary/ revision/ catch up 52. Revision questions 3 53. Assignment work 54. Assignment work Dead line for assignment 3 -7- A. Leigh The Muscular System Worksheets -8- A. Leigh THE MUSCULAR SYSTEM P3 Label the diagram of the muscles of the body. Triceps Abdominals Pectorals Latissimus Dorsi Gluteus Maximus Gastrocnemius Quadriceps Hamstrings Deltoids Trapezius Rhomboids Soleus Erector Spinae Obliques Bicep Use pencil until you are certain that you have got it right! -9- A. Leigh The Muscular system Worksheet M2 The Muscular System has 4 main functions. Think SPAM! S Protection A M The muscles of the body protect delicate organs of the body Eg the abdominals protect the digestive system We have three types of muscles in our bodies: Voluntary, Involuntary and Cardiac INVOLUNTARY MUSCLES: These muscles work automatically; they do not need us to tell them to contract. They often prevent little embarrassing accidents! eg CARDIAC MUSCLE: The heart is made from this specialised muscle. It is again an involuntary muscle since we don’t have to keep telling it to keep going! VOLUNTARY or SKELETAL MUSCLES: These are muscles that we can control and allow us to move and participate in sport. It is not a very pleasant thought, but when you are eating the meat of an animal, this is voluntary muscle! There are over 500 voluntary muscles in our body and they account for up to 40% of body mass. It is important that you know the main muscle groups: - 10 - A. Leigh The Structure of a Voluntary Muscle P3 222 A muscle is made up of thousands of muscle ___________ grouped together in bundles and surrounded by a tough outer _________. Imagine them to be a bundle of straws surrounded in a tough coat. At each end of the muscle are strong bands of inelastic fibres called ______________ and it is these that connects muscles to bone. The ______________ is the only muscle in the body that is only connected at one end. Normally one end of the muscle is attached by one or more tendons to a fixed point called the ______________, the other end is attached to a part of the body that moves called the _______________. When the muscle contracts it is usually the insertion that moves towards the origin. Think of the biceps - the origin is connected to the shoulder (fixed), the insertion is connected to the lower arm. When the arm moves, the insertion moves towards the origin. TONGUE; COAT; ORIGIN; TENDONS; INSERTION; A diagram of the structure of a muscle. - 11 - FIBRES; A. Leigh How muscles move. P3 222 Worksheet 1 Muscles can only pull or contract - they cannot push! It is therefore important that muscles work in pairs, one muscle to move the body part in one direction, the other to return it to its starting point. Because they work in opposite directions, these paired muscles are called ANTAGONISTS. The muscle contracting is the AGONIST or PRIME MOVER; the muscle relaxing is the ANTAGONIST. All movement is controlled by the nervous system Examples of paired muscles include: - 12 - P3 A. Leigh Worksheet 1 222 Using the terms contract, relax, biceps, triceps and origin, write a description of how the arm moves up and down. Do the same for the leg, substituting biceps and triceps with quadriceps and hamstrings. Use the hand written statement below as a writing frame to help with the other questions. In order to bend or flex the arm, the bicep ………………... and the …………………….. relax. This causes the bicep to shorten in length. The bicep is attached to the lower arm by a tendon, and as it contracts, it causes the arm to bend.. In order to straighten or extend the arm, the In order to bend or flex the leg, In order to straighten or extend the leg, A sandwich walks into a bar. The barman says "Sorry, we don't serve food in here." - 13 - P3 (brief), D1 A. Leigh 222 How muscles control the movement of the body. Worksheet 1 Movement Name of muscle Sporting example Which muscle flexes the knee? The Hamstrings A high jumper preparing to jump Which muscle extends the knee? A footballer kicking a ball Which muscle rotates the shoulder? Which muscle extends the elbow? Which muscle flexes the elbow Which muscle flexes the hips? Which muscle extends the hip? Gluteus Maximus Which muscle extends the ankle? Which muscle adducts the arm? Which muscle adducts the shoulder? The Pectorals Rotation - 14 - A. Leigh Types of Muscle Contraction M3 222 Worksheet 1 Muscles are always in a state or readiness to react when needed and are in a slight state of contraction. This is called MUSCLE TONE. Muscle tone helps with posture which in turn makes us look good and helps all of our body systems to work. Just to confuse things, there are 3 types of muscle contraction, Concentric, Eccentric and Isometric Use the internet to research the difference between each type of contraction. Make brief notes on each type, then complete the table below. Concentric Contractions Eccentric Contractions Isometric Contractions Place the following activities / exercises in the appropriate columns: Throwing a ball, A stationary rugby scrum, Raising the bar on a bicep curl, Isometric Eccentric Concentric - 15 - lowering the bar on a bicep curl, sitting still against a wall, bending down to sit in a chair P4, D2 A. Leigh Types of Muscle Fibre 222 Worksheet 1 The two types of muscle are RED or Slow twitch muscle & WHITE or Fast twitch muscle RED MUSCLE FIBRES or SLOW TWITCHING These muscle fibres have a very good blood supply and use oxygen to create energy. They can work for long periods of time. They are important for long distance running and endurance activities. WHITE MUSCLE FIBRES or FAST TWITCHING These contract at about twice the speed of red muscle fibres. They can release a sudden explosion of energy without oxygen. They are important for sprinting. Think of a chicken - the breast is made of white muscle for rapid flapping of the wings – sprinting; the legs are made from red muscle for slow walking. These different types of muscles are obviously very important for sports people. A sprinter needs to have more white muscle than red whereas a marathon runner should have far more red muscle fibres. Whilst training, it is important to develop the right type of muscle. If a sprinter trained by running long distances, he would build up red instead of white muscle! - 16 - A. Leigh Types of Muscle Fibre D1, D2 222 Worksheet 1 Place the following athletics events in the correct column. 100m, 200m, 400m, 800m, 1500m, 3000m, marathon, shot, discus, javelin, long jump, triple jump, and high jump. Use fast twitch muscles (White) 100m Use slow twitch muscles (Red) Now place the following games activities in the correct boxes A goal keeper saving a penalty, a netballer shooting a goal, a netball referee continually keeping up with play, a rugby scrum half constantly following the ball. Use fast twitch muscles (White) Use slow twitch muscles (Red) That isn’t so easy because games players need a combination of fibres to sprint, jog and jump when needed. Why is it important when training to build up the right muscle fibres? - 17 - A. Leigh D2 Types of Muscle Fibre 222 Worksheet 1 People’s muscles are not just made up of one type of muscle fibre, they always have a combination of fast and slow but obviously different sports require different combinations. Think about a mid field player at football or hockey, they continually run around requiring slow muscle but also have to be able to sprint on to a pass and make a break which requires fast twitch muscle. The following table shows how the percentage of muscle fibres varies between different athletics events. Men Sprint Middle Distance Long Distance Jumps Shot / Discus Javelin Untrained % Slow Twitch 24 47 62 39 34 48 56 Women % Fast Twitch 76 53 38 61 66 52 44 % Slow Twitch 27 60 68 44 47 43 49 % Fast Twitch 73 40 32 56 53 57 51 Although it is not possible to change red muscle into white, it is thought that another type of fibre exists that is neither red nor white: through specific training methods they can be made to act like one of the two specialised fibres. THE CO-ORDINATION OF MUSCLES. It is important to understand how we control our muscles. All muscles are connected to the Central Nervous System (the brain) by nerve fibres. Sensory nerves tell the brain what is happening in the muscle, and the brain controls the movement of the muscle through motor nerves. A sprinter on the starting blocks can be used as an example. When the gun fires, the _______________ nerves in the ear tell the brain that the race has started. The brain sends messages to the muscles along the ________________ nerves telling them to push off the blocks. The speed that it takes to leave the blocks is called ____________ ______________. It is obviously important that sports people have fast reactions so that they can quickly respond to different situations. Sensory; - 18 - Reaction Time; Motor A. Leigh P4, D1, D2 222 The effects of exercise on the Muscular System Worksheet 1 Use the internet or text books to research the short term and long term effects of exercise on the muscles. Use this page to make notes, then produce a poster, that can be displayed in a gym, highlighting your results Short term effects of exercise on the muscles (use the terms blood flow, lactic acid, muscle tears, fatigue, cramp) Notes Long term effects of exercise on muscles (use the terms Hypertrophy, Atrophy, vascularisation, nervous control) Notes - 19 - A. Leigh Notes, - 20 - A. Leigh - 21 - A. Leigh - 22 - A. Leigh - 23 - A. Leigh - 24 - A. Leigh - 25 - A. Leigh - 26 - A. Leigh - 27 - A. Leigh - 28 -