Test 1 Study Guide

Test 1 Study Guide - Chapter 1 Physical Activity and Health...

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Chapter 1- Physical Activity and Health Males more active 18-29 age group more active Education and income increase activity West Coast more active Black/Hispanic least active Leading cause of death: 1900 1998 Flu Heart Disease TB Cancer Diarrhea Stroke CVD leading cause of death in US (1.1 millions heart attacks per year) Coronary heart disease-48% Stroke-17% Hypertensive disease-5% Chronic Activity will reduce/improve: CVD Obesity/overweight Diabetes Cancer Osteoporosis Mental heath Bad News: 40% people are sedentary Public confused about activity recommendations Limited access Decline in PE in schools 2003-23% moderate activity 1997-32% moderate activity Sedentary Lives Study: Total Energy Expenditure (TEE) 19%-sleeping 11% driving 9.2% office work 8.6% TV 86% no leisure activity
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We are designed to walk 9-12 miles per day Everyday Find ways to stay active as possible in everyday tasks 3-5 times per week 20 min aerobic exercise 30 min recreational exercise 2-3 times per week Flexibility/Strength Training Cut down Sedentary activity (TV, video games) ACSM Guidelines for exercise (CV health) Large muscle group aerobic exercise Intensity: 55/65 – 90% HRmax or 40/50 – 85% VO2max Duration: 20-60 min continuous or added up Frequency: 3-5 days per week National Academy of Sciences Nutritional Rec’s (DRI, RDA) Focus heavily of body weight control 60 min moderate activity each day ACSM Optimum exercise for CV health (improve VO2max) and prevention of chronic disease CDC Min amount of activity to reduce disease burden in a population NAS Weight loss and prevention of weight gain
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Chapter 18: Cardiovascular Disease CVD: Number 1 cause of death in US Major cause of premature death and disability Movement of blood through heart: 1. Used blood enter heart 2. Right atria 3. Right ventricle 4. Lung 5. Left atria 6. Left ventricle 7. New blood into body Movement of blood through blood vessels: 1. Arteries 2. Arterioles 3. Capillaries 4. Venules 5. Veins Abnormalities of the heart: Holes between chambers (blue babies) Mitral valve prolapse or heart murmur = valves not working correctly Oxygen use by the heart: Myocardium needs O2 to contract O2 is supplied by coronary arteries O2 demand of heart depends on: Heart rate BP Myocardial O2 demand estimated by: SBP x HR Angina: Chest pain from occlusion of coronary arteries Occurs when O2 demand exceeds O2 supply Scale of 1-4 (4 severe) Cardiac Cycle: Systole (highest BP b/c of contraction) Ventricles contract and eject blood into body vessels
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Diastole (lowest BP b/c of ventricular relaxation) Ventricles being filled and no blood ejected from heart Blood Pressure: Lateral pressure of blood against vessels Pressure highest as it leaves the heart (arteries) Falls as it flows away from heart Becomes very low by the time it gets to the veins
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This note was uploaded on 04/01/2008 for the course HNFE 3864 taught by Professor Jwrankin during the Fall '07 term at Virginia Tech.

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Test 1 Study Guide - Chapter 1 Physical Activity and Health...

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