Exercise physiology and health

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Questions and Answers

Which of the following best describes the relationship between exercise physiology and physical activity?

  • Exercise physiology provides understanding to responses to physical activity. (correct)
  • Physical activity is a component of exercise physiology, focusing on the body's acute responses.
  • Physical activity and exercise physiology are unrelated concepts in the field of health and fitness.
  • Exercise physiology dictates the specific types of physical activities an individual should perform.

How does the overload principle contribute to improvements in cardiorespiratory endurance, and what might be the consequence of ignoring this principle?

  • It emphasizes the need for constant, high-intensity exercise to maximize gains, hence ignoring this principle can cause injuries.
  • It promotes varying the type of exercise to prevent boredom, hence ignoring this principle reduces motivation.
  • It suggests gradually decreasing exercise intensity to promote adaptation, hence ignoring this principle leads to rapid overtraining.
  • It involves progressively increasing stress on the body to stimulate adaptation, hence ignoring this principle results in stagnation. (correct)

How do fast-twitch muscle fibers primarily contribute to physical performance, and in what types of activities would they be most crucial?

  • By facilitating precise movements for activities like gymnastics.
  • By providing sustained energy for endurance activities, crucial for activities like marathon running.
  • By enhancing joint flexibility for activities like yoga.
  • By generating quick bursts of power for activities like sprinting. (correct)

In an emergency situation, what is the correct order of the 'three C's', and why is adherence to this sequence essential?

<p>Check, call, care - to ensure safety, summon help, and provide assistance effectively. (D)</p> Signup and view all the answers

How does an understanding of the FITT principle contribute to designing effective exercise programs, and what are the potential consequences of neglecting one or more of its components?

<p>It outlines the key variables in exercise prescription, hence neglecting a component may limit progress or increase injury risk. (D)</p> Signup and view all the answers

What physiological mechanism explains why athletes often experience an increase in VO2 max as a result of consistent aerobic training?

<p>Enhanced efficiency of oxygen extraction by muscles and increased cardiac output. (D)</p> Signup and view all the answers

How does the body's reliance on ATP (Adenosine Triphosphate) for muscle contractions influence exercise performance, and what strategies can be employed to enhance ATP production during high-intensity activities?

<p>By generating power quickly but fatiguing fast, and employing creatine supplementation. (B)</p> Signup and view all the answers

How might a comprehensive understanding of body composition influence an individual's approach to weight management, and what are the potential psychological implications of focusing solely on BMI as an indicator of health?

<p>By guiding personalized nutrition and exercise strategies, and potentially leading to body dissatisfaction or disordered eating. (D)</p> Signup and view all the answers

What are the underlying physiological differences between isometric, concentric, and eccentric muscle contractions, and how do these differences influence the execution of resistance training exercises?

<p>Isometric contractions involve muscle contraction without movement, concentric contractions involve muscle shortening, and eccentric contractions involve muscle lengthening. (A)</p> Signup and view all the answers

In the context of exercise, how does the specificity principle relate to the design of training programs, and what are the potential consequences of disregarding this principle when pursuing specific fitness goals?

<p>It suggests tailoring training to desired activities, and disregarding it leads to inadequate preparation. (A)</p> Signup and view all the answers

What is the primary goal of cardiopulmonary resuscitation (CPR), and how does the procedure differ when administered to adults versus infants?

<p>CPR aims to provide artificial circulation and ventilation, with adults receiving chest compressions using two hands and infants receiving compressions using two fingers. (A)</p> Signup and view all the answers

What are the acute and chronic cardiovascular adaptations to exercise, and how do these adaptations contribute to improved cardiovascular health and performance over time?

<p>Acute adaptations include increased heart rate, stroke volume, and cardiac output, while chronic adaptations reduce resting heart rate and stroke volume. (B)</p> Signup and view all the answers

What is the role of Excess Post-exercise Oxygen Consumption (EPOC) in the recovery process following exercise, and how does exercise intensity influence the magnitude and duration of EPOC?

<p>EPOC restores homeostasis by repaying the oxygen deficit, and higher intensity exercise results in a longer and larger EPOC. (C)</p> Signup and view all the answers

How does the body's basal metabolic rate (BMR) influence weight management strategies, and what factors can significantly impact an individual's BMR throughout their lifespan?

<p>BMR dictates daily caloric expenditure, with age, sex, and muscle mass influencing BMR. (D)</p> Signup and view all the answers

How does atherosclerosis, the buildup of plaque within arterial walls of the heart, impact cardiovascular function and overall health, and what lifestyle modifications can individuals adopt to mitigate the progression of this condition?

<p>Impairs blood flow, reducing overall health, and adopting regular exercise, a balanced diet, and avoiding smoking can mitigate the progression of this condition. (D)</p> Signup and view all the answers

What is the Heimlich maneuver, and when is its use indicated?

<p>The Heimlich maneuver utilizes 5 back blows using heel of hand then 5 thrusts in emergencies of people that are choking. (A)</p> Signup and view all the answers

How does lactic acid production influence muscle fatigue during intense anaerobic exercise, and what strategies can athletes employ to mitigate the effects of lactic acid accumulation and prolong performance?

<p>Accumulates during anaerobic metabolism, thus engaging in active recovery may accelerate lactate clearance. (B)</p> Signup and view all the answers

What are the potential short-term and long-term neurological adaptations to regular exercise, and how do these adaptations contribute to improved motor control, coordination, and cognitive function?

<p>Short-term adaptations include increased motor unit recruitment, while long-term adaptations include enhanced neuromuscular coordination. (D)</p> Signup and view all the answers

How does an understanding of the BMI (Body Mass Index) scale contribute to assessing an individual's weight status, and what are the limitations of relying solely on BMI as an indicator of overall health and fitness?

<p>BMI provides a general estimate of body weight in relation to height, but it does not account for body composition or individual variability. (C)</p> Signup and view all the answers

How might an individual effectively apply the progression principle to their resistance training program to optimize muscle hypertrophy and strength gains over time, and what are the potential risks of progressing too rapidly or too slowly?

<p>Gradually increasing resistance, volume, or exercise difficulty promotes adaptation, and slow progression can lead to plateaus while rapid progression elevates injury risk. (B)</p> Signup and view all the answers

How does the interplay between muscular strength and muscular endurance influence overall physical performance, and in what types of activities is the development of both qualities essential for optimal results?

<p>Muscular strength governs maximal force production, while muscular endurance dictates sustained contractions, essential for activities like rowing or swimming. (B)</p> Signup and view all the answers

What are the differences between aerobic and anaerobic exercise, and how do these differences influence fuel utilization, energy system contribution, and physiological adaptations?

<p>Aerobic exercise requires oxygen, anaerobic exercise does not require oxygen, and glucose is primarily used in anaerobic. (D)</p> Signup and view all the answers

How might an understanding of the acute vs. chronic adaptations to exercise assist in managing the risk of injuries, and what are the implications of manipulating exercise variables like intensity and volume to optimize long-term adaptations?

<p>By progressively manipulating exercise variables to optimize specificity, and maximizing intensity over frequency. (A)</p> Signup and view all the answers

What are the potential consequences of a concussion, and what are the steps to take if someone may have a concussion?

<p>There are about 4 million concussions per year which can be life threatening, thus it is important to check, call and care. (D)</p> Signup and view all the answers

What is flexibility? How might an understanding of flexibility contribute to athletic performance and injury prevention?

<p>Range of motion around a joint, thus minimizing muscle strains and joint injuries. (C)</p> Signup and view all the answers

How does the understanding that "Performance" is how well you complete a physical task contribute to setting realistic fitness goals, and in what ways might individuals accurately assess their performance improvements over time?

<p>Accurate performance improvements could be assessed through keeping track of time, intensity and volume. Fitness goals should align with performance improvements. (C)</p> Signup and view all the answers

How does an understanding of body composition, specifically the ratio of fat to lean mass, influence personalized nutrition plans, and what are the potential physiological implications of prioritizing either fat loss or muscle gain as the primary goal?

<p>Personalized nutrition plans that take the ratio of fat to lean mass into consideration optimize overall physique and health. (B)</p> Signup and view all the answers

What is "health", and how does an understanding of the multiple health components guide the creation and following of physical activity regimens to maximize overall well-being?

<p>Health is the overall state of your body and mind, with physical activity and exercise regimens used to maximize overall well-being. (A)</p> Signup and view all the answers

How does a comprehensive understanding of "exercise physiology" contribute to designing effective training programs, and what strategies can coaches and athletes employ to optimize performance while minimizing the risk of overtraining or injury?

<p>Helps structure training programs according to the individual's needs and goals. (D)</p> Signup and view all the answers

How might a nuanced understanding of both the short-term and long-term endocrine adaptations to exercise assist in optimizing training protocols, and what are the implications of manipulating variables such as exercise intensity, duration, and timing to maximize hormonal responses?

<p>Variables such as exercise intensity, duration, and timing may maximize hormonal responses, optimizing training protocols. (D)</p> Signup and view all the answers

How can slow-twitch muscle fibers influence fatigue, and what type of activities are needed to emphasize their importance?

<p>Contract slowly and resist fatigue, therefore endurance exercises are needed. (B)</p> Signup and view all the answers

How would the integration of "specificity principle" assist an athlete and coach to emphasize the athlete's strengths, and in what ways might they identify specific weaknesses to address through targeted training interventions?

<p>By training exactly what the athlete is trying to get better at, and integrating supplementary exercises that target specifically their strengths and weaknesses. (B)</p> Signup and view all the answers

How does body composition impact physical fitness, and how would that affect endurance performance?

<p>Improving body composition can increase endurance by improving heart and lung health. (D)</p> Signup and view all the answers

What are the long-term effects of muscle hypertrophy? When can someone expect muscle hypertrophy to occur?

<p>An increase in muscle size due to exercise and proper nutrition, after implementing a consistent fitness plan. (B)</p> Signup and view all the answers

How does an understanding of the acute v. chronic adaptations related to energy system assist in training programs?

<p>By emphasizing both exercises and understanding their acute vs. chronic demand, therefore increased efficiency of ATP production can be focused on. (C)</p> Signup and view all the answers

How does the need to "gradually increase exercise intensity over time" assist in reducing muscular injuries from physical exercise?

<p>By implementing progressive overload appropriately, therefore muscles, joints and ligaments adapt over time. (C)</p> Signup and view all the answers

How does regular physical exercises lead to "improved hormonal balance?"

<p>Exercise can improve the overall hormonal balance, therefore making for a positive physique. (D)</p> Signup and view all the answers

How can the proper use of fast-and-slow twitch muscle fibers maximize athletic results?

<p>Fast-twitch can focus on short and high intensity periods, while slow-twitch can improve overall endurance. (D)</p> Signup and view all the answers

During high-intensity anaerobic exercise that leads to lactic acid accumulation, which physiological process is most directly impaired, causing muscle fatigue?

<p>The ability of fast-twitch muscle fibers to maintain ATP production via glycolysis. (D)</p> Signup and view all the answers

How does the principle of specificity apply to a training program designed to improve an athlete's VO2 max for competitive endurance running?

<p>Emphasizing high-intensity interval training that closely mimics the demands of endurance running to maximize oxygen utilization and cardiovascular adaptations. (C)</p> Signup and view all the answers

Atherosclerosis, characterized by plaque buildup in arterial walls, directly impairs cardiovascular function. Which of the following best describes how this condition affects stroke volume and capillary density?

<p>Decreases stroke volume due to the narrowing of arteries and reduces capillary density due to impaired tissue perfusion. (D)</p> Signup and view all the answers

During prolonged endurance exercise, what is the primary mechanism by which slow-twitch muscle fibers contribute to sustained performance, and how does this mechanism influence glycogen depletion?

<p>By efficiently utilizing fatty acids as a fuel source, which reduces the reliance on glycogen and delays its depletion. (C)</p> Signup and view all the answers

When administering cardiopulmonary resuscitation (CPR) to an adult, maintaining the correct compression rate is essential. What range, as compressions per minute, should be targeted, and what is the primary reason for adhering to this rate?

<p>100-120 compressions per minute, to maintain adequate blood flow and oxygen delivery to vital organs. (C)</p> Signup and view all the answers

Flashcards

Exercise Physiology

Understanding how your body responds to exercise.

Physical Activity

Any movement of muscles that requires energy.

Fitness

Ability to carry out routine physical tasks without fatigue.

Performance

How well you can complete a physical task.

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Health

Overall state of your body and mind.

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CPR

Cardiopulmonary resuscitation; uses compressions and rescue breaths.

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Infant CPR

CPR for infants uses two fingers for compressions and covers the mouth and nose.

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Heimlich Maneuver

Emergency procedure using back blows and abdominal thrusts

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Atherosclerosis

Plaque buildup within arterial walls.

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Emergency Three C's

Check, call, care.

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Concussion

Traumatic brain injury

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Cardiorespiratory Endurance

The ability of the heart and lungs to supply oxygen during exercise.

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Muscular Strength

The maximum force a muscle can exert.

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Muscular Endurance

The ability of muscles to sustain repeated contractions.

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Flexibility

The range of motion around a joint.

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Body Composition

The ratio of fat to lean mass in the body.

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Anaerobic Exercise

High-intensity exercise that does not require oxygen.

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Aerobic Exercise

Low to moderate-intensity exercise that requires oxygen.

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VO2 Max

The maximum amount of oxygen the body can use during exercise.

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Lactic Acid

A byproduct of anaerobic metabolism that causes muscle fatigue.

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Overload Principle

To improve fitness, the body must be exposed to stress beyond normal levels.

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Specificity Principle

Training should be relevant to the desired activity or goal.

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Progression Principle

The need to gradually increase exercise intensity over time.

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FITT Principle

Frequency, Intensity, Time, Type of exercise.

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Hypertrophy

An increase in muscle size due to exercise.

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Atrophy

A decrease in muscle size due to inactivity.

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EPOC

The body's need for oxygen after exercise to restore homeostasis.

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Basal Metabolic Rate (BMR)

The number of calories the body needs at rest to maintain basic functions.

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Isometric Contraction

Muscle contraction without movement.

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Isotonic Contraction

Muscle contraction with movement.

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Concentric Contraction

Muscle shortens while contracting.

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Eccentric Contraction

Muscle lengthens while contracting.

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ATP

The primary energy source for muscle contractions.

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Fast-Twitch Muscle Fibers

Fibers that generate power quickly but fatigue fast.

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Slow-Twitch Muscle Fibers

Fibers that contract slowly and resist fatigue.

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Pulmonary acute effect

Increase in breathing rate and tidal volume

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Cardiovascular acute effects

Increased heart rate, stroke volume, and cardiac output.

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Pulmonary chronic effect

Improved lung capacity and efficiency.

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Cardiovascular chronic effects

Lower resting heart rate and increased stroke volume.

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Muscular Acute Effects

Increased muscle temperature, enzyme activity, and blood flow.

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Skeletal Acute Effects

Increased joint lubrication

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Neural Acute Effects

Increased motor unit recruitment and reaction speed.

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Muscular Chronic Effects

Increased muscle hypertrophy and endurance.

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Skeletal Chronic Effects

Increased bone density and ligament strength.

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Study Notes

Exercise Physiology & Health

  • Exercise physiology examines how the body responds to exercise.
  • Physical activity involves any muscle movement that requires energy.
  • Fitness is the ability to perform routine physical tasks without fatigue.
  • Performance measures how well a physical task is completed.
  • Health encompasses the overall state of the body and mind.

CPR and Emergency Procedures

  • CPR (Cardiopulmonary resuscitation) involves lung resuscitation, requiring 100 compressions per minute.
  • CPR for infants requires using two fingers to compress 1.5 inches deep, with mouth-to-mouth breaths covering the baby's mouth and nose.
  • The Heimlich Maneuver involves 5 back blows with the heel of the hand, followed by 5 thrusts.
  • Atherosclerosis is the buildup of plaque within the arterial walls of the heart.
  • Emergency situations require checking the scene, calling for help, and providing care.
  • Concussions occur about 4 million times per year.

Body Mass Index (BMI)

  • BMI levels below 18.5 indicate underweight.
  • BMI between 18.5 and 24.9 is considered normal.
  • BMI from 25 to 29.9 indicates overweight.
  • BMI of 30 percent and higher indicates obesity.

Cardiorespiratory and Muscular Fitness

  • Cardiorespiratory Endurance is the heart and lungs' ability to supply oxygen during exercise.
  • Muscular Strength represents the maximum force a muscle can exert.
  • Muscular Endurance is the ability of muscles to sustain repeated contractions.
  • Flexibility is the range of motion around a joint.
  • Body Composition is the ratio of fat to lean mass in the body.

Types of Exercise

  • Anaerobic Exercise is high-intensity and doesn't require oxygen, like sprinting.
  • Aerobic Exercise has a low to moderate intensity and requires oxygen, like jogging.
  • VO2 Max is the maximum amount of oxygen the body can use during exercise.
  • Lactic Acid results as byproduct of anaerobic metabolism causing muscle fatigue.

Principles of Training

  • Overload Principle states that to improve fitness, the body must be exposed to stress beyond normal levels over time.
  • Specificity Principle dictates that training should be relevant to the desired activity or goal.
  • Progression Principle emphasizes the need to gradually increase exercise intensity over time.
  • FITT Principle includes Frequency, Intensity, Time, and Type of exercise.
  • Hypertrophy is an increase in muscle size due to exercise.
  • Atrophy is a decrease in muscle size due to inactivity.
  • EPOC (Excess Post-Exercise Oxygen Consumption) signifies the body's need for oxygen after exercise to restore homeostasis.
  • Basal Metabolic Rate (BMR) is the number of calories the body needs at rest to maintain basic functions.

Muscle Contractions

  • Isometric Contraction is a muscle contraction without movement, like a plank.
  • Isotonic Contraction is a muscle contraction with movement, like a bicep curl.
  • Concentric Contraction occurs when a muscle shortens while contracting, like lifting a weight.
  • Eccentric Contraction happens when a muscle lengthens while contracting, like lowering a weight.
  • ATP (Adenosine Triphosphate) is the primary energy source for muscle contractions.
  • Fast-Twitch Muscle Fibers generate power quickly but fatigue fast, like in sprinting.
  • Slow-Twitch Muscle Fibers contract slowly and resist fatigue, as in endurance running.

Acute vs. Chronic Adaptations to Exercise

Pulmonary (Respiratory) System

  • Acute Effects: Increased breathing rate and tidal volume.
  • Chronic Effects: Increased lung capacity and oxygen uptake efficiency.

Cardiovascular System

  • Acute Effects: Increased heart rate, stroke volume, and cardiac output.
  • Chronic Effects: Decreased resting heart rate, increased stroke volume and capillary density.

Muscular System

  • Acute Effects: Increased muscle temperature, enzyme activity, and blood flow.
  • Chronic Effects: Increased muscle hypertrophy, endurance, and strength.

Skeletal System

  • Acute Effects: Increased joint lubrication and mineral.
  • Chronic Effects: Increased bone density and ligament/tendon.

Neural (Nervous) System

  • Acute Effects: Increased motor unit recruitment and reaction speed.
  • Chronic Effects: Increased neuromuscular coordination and movement efficiency.

Endocrine System

  • Acute Effects: Increased release of stress and energy-regulating hormones.
  • Chronic Effects: Improved hormonal balance and metabolic function.

Energy Systems

  • Acute Effects: Immediate ATP demand
  • Chronic Effects: Increased efficiency of ATP production and storage.

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