Kines 3502 aerobic testing notes

Kines 3502 aerobic testing notes - KIN 3502 Tests and...

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KIN 3502: Tests and Measurement in Kinesiology Aerobic Fitness 1
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Aerobic Fitness § Ability of the body to use oxygen to produce movement § Combination of § ability of cardiovascular system and lungs to extract and transport oxygen AND § ability of the muscles to extract and convert oxygen into muscular force § Oxygen Consumption 2
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Why is Aerobic Fitness Important? Related to mortality Performance in many sports Quality of life 3
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How do we quantify Aerobic Fitness? VO2 Max § Expressed as volume (mL or L) per minute Because VO2 Max varies as a function of body size, it is often expressed relative to body mass Relative VO2 Max is expressed as mL/minute/kg 1 MET = 3.5 mL/minute 4
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Predictors of Aerobic Fitness Age § Inverse U-shaped relationship (age 25) Gender Training Percent body fat 5
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6 Maximal oxygen uptake (O2 max) and age in endurance-trained and sedentary women Tanaka, H. et al. J Appl Physiol 83: 1947-1953 1997
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Aerobic Fitness Declines with age during adulthood Decline in max HR a contributing factor Other factors: § decline in physical activity § reduction in muscle mass § increase in fat mass Both cross-sectional and longitudinal data document the decline
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Aerobic Fitness NASA Studies (cross-sectional) § About 50% of decline associated with life style § Percent body fat § Exercise habits Importance of aerobic fitness § Needed to function independently § Essential to quality of life Levels of function based on VO2 max § Severe impairment = 15 ml . kg-1 . m-1
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What Is the Gold Standard Test? Maximal exercise test with collection of expired gases Highly involved regarding both time and expense Many alternative approaches, falling into two categories: § Field tests : take place in a variety of nonlaboratory settings, typically by a group of people § Submaximal exercise tests : tests with the level of effort limited to submaximal exertion, typically performed by an individual in a laboratory setting ACSM 2010 9
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What test characteristics would you consider when choosing an aerobic capacity test? 10
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Considerations for Testing Participant characteristics Accuracy, reliability, validity of test Safety (Who needs physician involvement?) Cost Expertise 11
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Risk Stratification ACSM 2010 12
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Pretest Standardizations for CRF Assessments Instruct the client to: Have plenty of fluids for the previous 24 hours Avoid strenuous exercise for the previous 24 hours Obtain an adequate amount of sleep the night before the test Avoid alcohol, tobacco, and caffeine with 3 hours of the test Wear comfortable exercise-type clothing ACSM 2010 13
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Pretest Procedures for CRF Assessments Other pretest issues Complete the informed consent process § Make sure the client understands the freedom to stop the test at any time If the rating of perceived exertion (RPE) scale is being used, provide the client with an explanation of the scale ACSM 2010 14
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