HES 211 Cardiorespiratory Fitness Testing PDF

HES 211 Cardiorespiratory fitness testing October 16, 2024 9:31 AM Big idea: by emplotinhg informed selection, accurate monitoring, and precise execution techniques in cardiorespiratory fitness assessments, we enhance both the safety and effectiveness of the testing process, while also generatin...

HES 211 Cardiorespiratory fitness testing October 16, 2024 9:31 AM Big idea: by emplotinhg informed selection, accurate monitoring, and precise execution techniques in cardiorespiratory fitness assessments, we enhance both the safety and effectiveness of the testing process, while also generating high quality data 1. Identify and describe key steps in O2 transport/utilization (i.e., mouth to mitochondria) 2. Describe the integrative function of the physiological systems and how each support the maintenance of aerobic power 3. Describe the acute response to cardiovascular exercise in healthy adults 4. Identify key variables to measure and justify their importance O2 transport cascade - ventilation (inhalation) -> pulm diffusion (gas exchange capillaries) -> convective O2 delivery -> skeletal muscle diffusion -> skeletal muscle o2 utilization Energy formation Metabolic pathways resynthesize ATP for muscular contraction to generate muscular work Accomplished anaerobically and aerobically ○ ATP-CP (alactic) ○ Anaerobic glycolysis (lactic) Oxidative phosphorylation (glycolysis, kreb's, ETC) HES 211 Exercise Testing Page 1  ○ Oxidative phosphorylation (glycolysis, kreb's, ETC) ○ Lipid metabolism (beta oxidation) and protein metabolism (minor) Aerobic testing primarily tests cellular respiration; O2 final e- acceptor, allowing aerobic metabolism to occur O2 must be delivered to mitochondria ○ Extracted from capillaries, transported into cell thru to mito 2 considerations ○ How is O2 going to be delivered to cell ○ How is O2 going to be extracted by cell Aerobic power Oxygen fuels aerobic ATP generation and muscular work The delivery and utilization depends on an integrated and coordinated transport of oxygen The ability to consume O2 at a high level requires all systems to be able to meet the demands placed on them at a high rate ○ Ability of cardiopulmonary system to deliver O2 to skeletala muscles and efficiency of muscles to utilize O2 VO2peak: peak rate (power) at which O2 is consumed, transported and used for muscular work (energy) The oxygen pathway ○ Volume of oxygen consumed per minute (VO2) HES 211 Exercise Testing Page 2 Heart rate increases linearly with exercise intensity Stroke volume increases initially before plateauing HES 211 Exercise Testing Page 3 HES 211 Exercise Testing Page 4 Maximal responses HES 211 Exercise Testing Page 5 HES 211 Exercise Testing Page 6