Kines100 Exercise Nutrition and Health Last Lecture Outline 1 Reversibility Adapting to reduction 2 Principle of Individuality Not considering Individuality 3 Energetic of Energy Metabolism Catabolism What are energy Nutrients Cell 4 Systems for synthesizing ATP 5 Immediate Energy Systems 6 Non oxidative Anaerobic Glycolytic System 7 Oxidative Aerobic Phosphorylation System Lecture 6 Current Lecture 1 Comparing systems 2 Physiology of Aerobic Fitness Systems respiratory cardiovascular muscular Diffusion Ventilation 3 Respiratory fitness adaptation Comparing systems System Immediate Nonoxidative Oxidative Aerobic or anaerobic Anaerobic Anaerobic Aerobic Speed Very rapid Rapid Slow Substrate ATP CP Glucose CHO CHO fat Protein Lactic Acid NO YES NO Fatigue Rate High low capacity High Low capacity Low High capacity Location Cytoplasm Cytoplasm Mitochondria The faster you produce ATP the less capacity Physiology of Aerobic Fitness What is it Capacity to do fitness aerobic activity 2 Stage process Oxygen supply and Oxygen consumption expenditure Primary Systems Respiratory cardiovascular muscular Respiratory Referred to as pulmonary system pulmonary pertains to lungs respiration refers to entire body 2 processes Ventilation in out of gases Occurs in lungs pertains to air flow or movement of air V F tv Tidal volume Breaths minutes Depth of each breath 12 breaths a minute anatomical structure nasal passages to throat wind pipe to lungs brochioles Diffusion exchange of CO2 and oxygen in blood Occurs in the lungs and in cells of body gases move from areas of high concentration to lower concentration Oxygen and Carbon dioxide waste of aerobic metabolism Ventilation increases Frequency goes from 12 breaths a minutes at rest to very rapid breathing at rate even hyperventilation Tidal volume becomes greater until breathing rate is considerable then levels out or even decreases curvilinear response to exercise Respiratory Fitness Adaptation Can we train the lungs Very little lung adaptation Total lung capacity increases diaphragm endurance improves Drive to breath Build up of Carbon Dioxide Why not That s how we exercise we don t inhale large amounts and exhale completely while working out leads to side cramps muscle fatigue of diaphragm Doesn t need to adapt to get better Asthma ventilation of the bronchials Lung is a super organ Already large enough Very little room to expand they aren t the rate limiting step to aerobic exercise Cardiovascular heart acts as a pump work measured as output Cardiac output heart rate X stroke volume Proportional response between HR and work rate Stroke volume nonlinear and flattens out we only have a certain volume of blood inside our bodies We want increased cardio output Blood vessels blood
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