Transcript core 2
PDHPE HSC Enrichment Day 2010 Core 2 Factors Affecting Performance Overview Activity 1/2 How does training affect performance? Physiological adaptations in response to training -Resting heart rate -Stroke volume and cardiac output -Oxygen uptake and lung capacity -Haemoglobin level -Muscle hypertrophy -Effect on fast/slow twitch muscle fibres How can nutrition affect performance? Recovery strategies -Physiological strategies, e.g. cool down, hydration -Neural strategies, e.g. hydrotherapy, massage -Tissue damage strategies, e.g. cryotherapy -Psychological strategies, e.g. relaxation Adaptation Resting Heart Rate Stroke Volume Cardiac Output Oxygen Uptake Lung Capacity Haemoglobin Level Muscle Hypertrophy Effect on fast / slow twitch fibres Definition Adaptation Resting Heart Rate Stroke Volume Cardiac Output Oxygen Uptake Lung Capacity Haemoglobin Level Muscle Hypertrophy Effect on fast / slow twitch fibres Relationship to Improved Performance Activity 3 Stroke Volume and Cardiac Output Fox, E, Bowers RW & Foss, M, The Physiological Basis of Physical education and Athletics, 4th Ed., Wm C Brown Publishers, Dubuque. Oxygen Uptake Activity 4 Fox, E, Bowers RW & Foss, M, The Physiological Basis of Physical education and Athletics, 4th Ed., Wm C Brown Publishers, Dubuque. Lance Armstrong Parameters taken from research by Coyle (physiologist) from University of Texas An oversized heart which can beat over 200 times a minute. His VO2 max is extremely high (85 mls/kg/min) 8% improvement in muscle efficiency (probably as a result of training) enabling him to harness more power. Coyle says that he is the only human who has been shown to change his muscle efficiency Low lactic acid levels (Armstrong has the lowest levels Coyle has ever seen). Armstrong produces about half as much as the average person’s muscles. Body fat = 4% to 5% Resting heart rate = 32 beats per minute Thigh bone was unusually long allowing more application of force to the pedal. In the space provided in your work book, explain how these adaptations will impact on Armstrong’s performance. How can nutrition and recovery affect performance Recovery Strategies Ruskin, R, Proctor, K., & Neeves, D., Outcomes 2 HSC Course: Personal development, Health and Physical Education, 3rd ed.Wiley, Brisbane, 2007 Physiological Strategies Strategy Description Neural Strategies Strategy Description Tissue Damage Strategies Strategy Description Psychological Strategies Strategy Description