Chapter 2: Exercise Physiology
The chapter delves into exercise physiology, highlighting how the cardiovascular, respiratory, and muscular systems adapt to the increased demands of physical activity. It covers critical concepts such as heart rate, stroke volume, ventilation rate, and muscle metabolism, emphasizing their roles in optimizing performance and health. Effective thermoregulation during exercise is also discussed, outlining mechanisms to manage body temperature while engaging in strenuous activity.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Heart rate and stroke volume significantly increase during exercise to enhance blood flow to muscles.
- Ventilation rate and tidal volume rise to meet oxygen demands and remove carbon dioxide during physical activity.
- Muscle fatigue can result from various factors, including lactic acid accumulation and depletion of energy stores.
- Thermoregulation is vital during exercise to maintain optimal body temperature and prevent heat-related illnesses.
Key Concepts
- -- Heart Rate (HR)
- The number of times the heart beats per minute, increasing with exercise intensity.
- -- Stroke Volume (SV)
- The amount of blood ejected by the left ventricle per heartbeat, which increases during exercise.
- -- Cardiac Output (Q)
- The total volume of blood pumped by the heart per minute, calculated as HR multiplied by SV.
- -- Ventilation Rate
- The number of breaths taken per minute, which increases during exercise to meet metabolic demands.
- -- Oxygen Uptake (VO2)
- The amount of oxygen used by the body per minute, signifying aerobic fitness.
- -- Muscle Fatigue
- The decrease in a muscle's ability to generate force, often due to energy depletion and lactic acid accumulation.
- -- Thermoregulation
- The process of maintaining core body temperature during exercise to prevent overheating.
Additional Learning Materials
Supplementary resources to enhance your learning experience.