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Cardiorespiratory Endurance

Cardiorespiratory Endurance. The ability to perform prolonged large-muscle, dynamic exercise at moderate-to-high levels of intensity. Definitions…. Energy – _________________________ Fatigue – the inability to do work at a given intensity or duration of activity

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Cardiorespiratory Endurance

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  1. Cardiorespiratory Endurance The ability to perform prolonged large-muscle, dynamic exercise at moderate-to-high levels of intensity

  2. Definitions… • Energy – _________________________ • Fatigue – the inability to do work at a given intensity or duration of activity • Endurance – the ability to exert ______ or do work for a given duration • Training/Conditioning – physical activity designed to fight against fatigue - Principle - Result

  3. Definitions… • Calorie – A unit of measurement of the amount of energy we obtain from a food • Adenosine Triphosphate – The basic for or energy used by all cells

  4. Metabolism – the sum of all chemical processes whereby energy is made available and used by the body

  5. ATP – used to performBiologic Work - Movement

  6. Summary of Energy Systems

  7. Cardiorespiratory Endurance Activity and Fuel Utilization

  8. Cardiorespiratory Endurance Training • Frequency: __to __ days per week. • Intensity: __%-__% of max. heart rate - Max. H.R. = 220-age - Target H. R. = 70%-85% Max. H.R. • Time: 20-60 minutes of continuous aerobic activity

  9. Assessing Cardiorespiratory Endurance (Fitness) • VO2max (maximal oxygen consumption): the highest rate of oxygen consumption during maximum physical effort. • the best overall measurement of the capacity of the cardiorespiratory system. • Expressed as: ___/___/____

  10. 3-Minute Step Test • Equipment: 16.25 inch step, watch, metronome • Step up & down (up-up-down-down) Male: 96 bpm (24 steps/min) Female: 88 bpm (22 steps/min) Males: VO2max = 111.33 – (0.42 x HR) Females: VO2max = 65.81 – (0.1847 x HR) HR = heart rate in bpm. Take HR after 3 minutes of stepping for a 15 second count and times by four

  11. Heart – an amazing pump Heart Rate: rate of contractions Stroke Volume: volume of blood ejected from the heart with each beat Cardiac Output: (__________) volume of blood pumped from the heart per minute

  12. Physiological Change Stronger _________ wall Increased chamber _________ Health Benefit Improved ________ volume __________ resting heart rate Adaptations of CRE TrainingHeart

  13. Physiological Change Increased ability to _________ Increased number of capillaries ________ circulation Health Benefit Enhanced blood flow &  blood pressure Improved O2 and CO2 exchange Alternate avenues of blood flow Adaptations of CRE TrainingArteries

  14. Physiological Change  number of RBC and hemoglobin  blood volume  ___________ _____________ Health Benefit Greater O2 and CO2 carrying capacity Reduced blood viscosity & pressure Greater protection against free radicals Adaptations of CRE Training Blood

  15. Physiological Change Strengthened respiratory muscles Greater surface area of lungs Health Benefit Enhanced O2-CO2 exchange Adaptations of CRE TrainingLungs

  16. Physiological Change Increased ________ concentration Increased fat metabolism enzymes Increased number of ______________ Health Benefit Improved O2-CO2 transport Greater utilization of fat for energy Increased ability to produce energy Adaptations of CRE TrainingMuscles

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