Marking and Feedback guidance for BTEC Mark to the Eastbury School Editing Code Annotate in margin where assessment criteria has been achieved. Identify any positives (www) Provide guidance on what specifically needs to be added (having already annotated in the text where this should go). Link all improvements to an assessment criteria e.g. To achieve P7 you must; For M4 you need to; Use keywords and terms so that pupils know what they need to do e.g. explain, how, why, etc. Set other targets e.g. written structure, SP + GR, use of references, etc. Give students the opportunity to respond (in green pen if written OR using a different colour/highlighted font if on computer)

BTEC Level 3 Extended Diploma in Sport (Development, Coaching and Fitness) Assessment Criteria / Grades Awarded Referral Comments Students Name: John SmithYear: 12 Subject: Unit 1. Principles of Anatomy and Physiology in SportTeacher Name: Mr Davies Assignment Title: The Energy Systems (Assignment 7)Issue Date: 22/03/11 Deadlines – Draft Copy: 30/03/11 Final Copy: 06/04/11 Pass Merit Distinction Describe the three different energy systems and their use in sport and exercise activities (P7) Explain the three different energy systems and their use in sport and exercise activities (M4) Analyse the three different energy systems and their use in sport and exercise activities (D2) Draft: Not all of the information you have written about the lactic acid system is correct – check and make corrections to achieve P7. You have correctly identified a sporting example but be more specific. To achieve M4 you need to explain why a 200m swimmer would need to use this system For M4 you also need to explain how lactic acid is produced and why it affects performance. For M4, explain why it takes minutes to recover and to achieve D2, say how this could then affect sporting performance. Signed: R. Davies Date: 30/03/11

Pupil Response The lactic acid energy system is the medium-term energy system. To meet energy requirements of a higher intensity over a longer period such as a 200m swimming freestyle race, ATP can be made by the partial breakdown of glucose and glycogen. This is an anaerobic process that does not require oxygen and therefore it is not sustainable over a longer duration. Around seconds of maximal work is possible using this system. When the ATP-PCr system begins to fade after 10 seconds, the process of anaerobic glycolysis begins. The system breaks down liver and muscle glycogen stores without the presence of oxygen, which produces lactic acid as a by-product. This limits energy production. Lactic acid is the limiting factor of the anaerobic system. It accumulates and diffuses into the bloodstream. If this substance is not removed by the circulatory system, it builds up to impede muscle contraction and cause fatigue. This may cause the athlete to experience an uncomfortable burning sensation in their muscles. It takes around minutes for this system to recover and replenish glycogen and glucose stores. In addition we need time to deliver oxygen to the body in order to break down lactic acid and remove it from the body. For example Paul Biedermen holds the 200m freestyle world record at 1 minute 42 seconds. This shows that he is able to exercise at a high intensity using the lactic acid system to complete the race as fast as he can. If he swims a heat in the morning, there is ample recovery time for stores of glycogen and glucose to replenish in time for his final in the evening.