13.07 · Réponse cardio-vasculaire et respiratoire à l’exercice

Cardiovascular and respiratory response to exercise

SMB4 Systèmes physiologiques 2 Locomotion, activité physique · 39 pages

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CV and Respiratory Response to Exercise

1Title Slide 2Teaching Schedule 3Learning Objectives

O₂ Consumption Framework

4VO₂ Rises with Work Rate 5Coupling of Cellular Respiration with CV and Respiratory Systems 6VO₂ = DO₂ × ER 7VO₂ = DO₂ × ER (Extraction Ratio Highlighted)

O₂ Extraction During Exercise

8Extraction Rises from 20–40% to 70–80%9O₂-Hemoglobin Dissociation Curve 10Rightward Shift: pH and Temperature Effects

11VO₂ = DO₂ × ER (DO₂ Highlighted)12DO₂ = Cardiac Output × CaO₂ 13DO₂ = Cardiac Output × CaO₂ (Continued)14Arterial O₂ Content: Hb-Bound Component 15Arterial O₂ Content: Full Equation

16DO₂ Equation (DC Highlighted)17DC = Stroke Volume × Heart Rate 18Cardiac Output During Exercise (Untrained)19Stroke Volume Plateaus, Heart Rate Keeps Rising

Arterial Pressure

20Determinants of Blood Pressure 21Blood Pressure During Exercise

Cardiovascular Response Mechanisms

22Increased CO → More Muscle Blood Flow 23Increased Preload: Muscle, Respiratory, and Venous Pumps 24Preload Definition and LVEDP 25Preload and Sympathetic Stimulation Raise Stroke Volume 26CV Response Summary Flowchart 27Flow vs Pressure and Resistance 28Metabolic Vasodilation in Muscle Arterioles 29Cardiac Output Redistribution During Exercise

Respiratory Response

30Minute Ventilation: V̇ = Vt × RR 31Lung Volumes and Capacities 32Breathing Pattern Changes with Exercise Intensity 33Ventilatory Response to Submaximal Exercise 34Ventilatory Threshold 35Untrained vs Elite Ventilatory Response 36Ventilation Sensitivity to PaCO₂ 37Neural and Chemical Ventilation Control

38References 39Closing Slide

13.07Page 1CV and Respiratory Response to ExerciseTitle Slide

Réponse cardio-vasculaire et respiratoire à l’exercice page 1

13.07Page 2CV and Respiratory Response to ExerciseTeaching Schedule

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13.07Page 3CV and Respiratory Response to ExerciseLearning Objectives

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13.07Page 4CV and Respiratory Response to ExerciseO₂ Consumption FrameworkVO₂ Rises with Work Rate

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13.07Page 5CV and Respiratory Response to ExerciseO₂ Consumption FrameworkCoupling of Cellular Respiration with CV and Respiratory Systems

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13.07Page 6CV and Respiratory Response to ExerciseO₂ Consumption FrameworkVO₂ = DO₂ × ER

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13.07Page 7CV and Respiratory Response to ExerciseO₂ Consumption FrameworkVO₂ = DO₂ × ER (Extraction Ratio Highlighted)

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13.07Page 8CV and Respiratory Response to ExerciseO₂ Extraction During ExerciseExtraction Rises from 20–40% to 70–80%

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13.07Page 9CV and Respiratory Response to ExerciseO₂ Extraction During ExerciseO₂-Hemoglobin Dissociation Curve

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13.07Page 10CV and Respiratory Response to ExerciseO₂ Extraction During ExerciseRightward Shift: pH and Temperature Effects

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13.07Page 11CV and Respiratory Response to ExerciseO₂ DeliveryVO₂ = DO₂ × ER (DO₂ Highlighted)

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13.07Page 12CV and Respiratory Response to ExerciseO₂ DeliveryDO₂ = Cardiac Output × CaO₂

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13.07Page 13CV and Respiratory Response to ExerciseO₂ DeliveryDO₂ = Cardiac Output × CaO₂ (Continued)

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13.07Page 14CV and Respiratory Response to ExerciseO₂ DeliveryArterial O₂ Content: Hb-Bound Component

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13.07Page 15CV and Respiratory Response to ExerciseO₂ DeliveryArterial O₂ Content: Full Equation

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13.07Page 16CV and Respiratory Response to ExerciseCardiac OutputDO₂ Equation (DC Highlighted)

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13.07Page 17CV and Respiratory Response to ExerciseCardiac OutputDC = Stroke Volume × Heart Rate

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13.07Page 18CV and Respiratory Response to ExerciseCardiac OutputCardiac Output During Exercise (Untrained)

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13.07Page 19CV and Respiratory Response to ExerciseCardiac OutputStroke Volume Plateaus, Heart Rate Keeps Rising

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13.07Page 20CV and Respiratory Response to ExerciseArterial PressureDeterminants of Blood Pressure

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13.07Page 21CV and Respiratory Response to ExerciseArterial PressureBlood Pressure During Exercise

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13.07Page 22CV and Respiratory Response to ExerciseCardiovascular Response MechanismsIncreased CO → More Muscle Blood Flow

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13.07Page 23CV and Respiratory Response to ExerciseCardiovascular Response MechanismsIncreased Preload: Muscle, Respiratory, and Venous Pumps

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13.07Page 24CV and Respiratory Response to ExerciseCardiovascular Response MechanismsPreload Definition and LVEDP

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13.07Page 25CV and Respiratory Response to ExerciseCardiovascular Response MechanismsPreload and Sympathetic Stimulation Raise Stroke Volume

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13.07Page 26CV and Respiratory Response to ExerciseCardiovascular Response MechanismsCV Response Summary Flowchart

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13.07Page 27CV and Respiratory Response to ExerciseCardiovascular Response MechanismsFlow vs Pressure and Resistance

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13.07Page 28CV and Respiratory Response to ExerciseCardiovascular Response MechanismsMetabolic Vasodilation in Muscle Arterioles

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13.07Page 29CV and Respiratory Response to ExerciseCardiovascular Response MechanismsCardiac Output Redistribution During Exercise

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13.07Page 30CV and Respiratory Response to ExerciseRespiratory ResponseMinute Ventilation: V̇ = Vt × RR

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13.07Page 31CV and Respiratory Response to ExerciseRespiratory ResponseLung Volumes and Capacities

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13.07Page 32CV and Respiratory Response to ExerciseRespiratory ResponseBreathing Pattern Changes with Exercise Intensity

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13.07Page 33CV and Respiratory Response to ExerciseRespiratory ResponseVentilatory Response to Submaximal Exercise

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13.07Page 34CV and Respiratory Response to ExerciseRespiratory ResponseVentilatory Threshold

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13.07Page 35CV and Respiratory Response to ExerciseRespiratory ResponseUntrained vs Elite Ventilatory Response

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13.07Page 36CV and Respiratory Response to ExerciseRespiratory ResponseVentilation Sensitivity to PaCO₂

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13.07Page 37CV and Respiratory Response to ExerciseRespiratory ResponseNeural and Chemical Ventilation Control

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13.07Page 38CV and Respiratory Response to ExerciseReferences

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13.07Page 39CV and Respiratory Response to ExerciseClosing Slide

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