Exercise Physiology Quiz

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By jwblackwell

Quiz

Flashcards

9 Questions

What is exercise physiology?

Who are exercise physiologists?

What did Archibald Hill introduce in 1922?

What do Accredited Exercise Physiologists (AEP's) do?

Where does the energy needed for short-lasting, high-intensity bursts of activity come from?

How does exercise affect glucose control in those with diabetes mellitus?

What is the Fick Equation?

What happens to plasma glucose levels during prolonged or intense exercise?

What is the basal metabolic rate of resting skeletal muscle?

Summary

Exercise Physiology: Key Facts and Figures

  • Exercise physiology is the study of the acute responses and chronic adaptations to exercise, and involves the study of muscular, cardiovascular, and neurohumoral systems.

  • Exercise physiologists are highly qualified professionals who use education, lifestyle intervention, and specific forms of exercise to rehabilitate and manage injuries and conditions.

  • Archibald Hill introduced the concepts of maximal oxygen uptake and oxygen debt in 1922, and scientists began measuring oxygen consumption during exercise.

  • Accredited Exercise Physiologists (AEP's) prescribe exercise-based interventions to treat various conditions using dose response prescriptions specific to each individual.

  • During sustained exertion, humans have a high capacity to expend energy for many hours, with one individual cycling through 8,204 km over 50 consecutive days, expending a total of 1,145 MJ of energy.

  • Resting skeletal muscle has a basal metabolic rate (resting energy consumption) of 0.63 W/kg, making a 160-fold difference between the energy consumption of inactive and active muscles.

  • Energy needed to perform short-lasting, high-intensity bursts of activity is derived from anaerobic metabolism within the cytosol of muscle cells, while energy for sustained activity is derived from aerobic respiration.

  • Plasma glucose levels are maintained during moderate exercise but can fall during prolonged or intense exercise, leading to fatigue.

  • Exercise is a potent tool for glucose control in those who have diabetes mellitus, increasing glucose disposal and insulin sensitivity.

  • Vigorous physical activity increases the body's demand for oxygen, and oxygen consumption during exercise is best described by the Fick Equation.

  • Dehydration reduces aerobic endurance performance and results in increased body temperature, heart rate, perceived exertion, and possibly increased reliance on carbohydrate as a fuel source.

  • The brain is normally dependent for its high energy expenditure upon aerobic metabolism, and exercise can affect its supply of oxygen and glucose, disrupting its function.

  • During submaximal exercise, cardiac output increases and cerebral blood flow increases beyond the brain's oxygen needs, but the autoregulation of the brain's blood supply is impaired particularly in warm environments.Exercise Physiology: Understanding the Science of Exercise

  • Exercise can cause metabolic stress, leading to the release of IL-6 from the brain, which can cause energy crises.

  • Moderate dehydration caused by exercise and heat can impair cognition, and cognitive impairment can occur after losing body mass greater than 1%.

  • Hyperthermia can lower cerebral blood flow and raise brain temperature, leading to cognitive impairment.

  • Fatigue during intense activity can be caused by a lack of oxygen and energy supply, and disturbances of muscle ion homeostasis.

  • Humans are adapted to engage in prolonged strenuous muscular activity, which may have evolved to allow the running down of game animals by persistent slow but constant chase over many hours.

  • Exercise-induced muscle pain can range from mild soreness to debilitating injury, depending on intensity of exercise, level of training, and other factors.

  • Accreditation programs exist with professional bodies in most developed countries, ensuring the quality and consistency of education in exercise physiology.

  • Exercise physiology curriculum includes biology, chemistry, and applied sciences, and a minimum amount of practicum experience is required.

  • Exercise physiologists range from basic scientists, to clinical researchers, to clinicians, to sports trainers.

  • Exercise-induced muscle pain is the result of ruptures within the muscle.

  • Humans can remove exercise heat, avoiding the fatigue from heat exhaustion that affects animals chased in a persistent manner.

  • The idea of a central governor has been questioned since athletes can override it.

Description

Test your knowledge of exercise physiology with this informative quiz! From the acute responses to chronic adaptations of exercise to the effects of dehydration on cognitive function, this quiz covers a wide range of topics. Discover key facts and figures, including the energy consumption of active and inactive muscles, the effects of exercise on glucose control, and the impact of hyperthermia on cerebral blood flow. Whether you're a fitness enthusiast or a healthcare professional, this quiz is sure to challenge your understanding of the science of exercise.

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