Week 2 TI

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Questions and Answers

Which physiological systems are primarily targeted by aerobic exercise?

  • Cardiovascular and respiratory systems (correct)
  • Endocrine and digestive systems
  • Integumentary and lymphatic systems
  • Neuromuscular and skeletal systems

What is the main outcome of the adaptations that result from anaerobic exercise?

  • Enhanced oxygen delivery to tissues
  • Improved cardiovascular endurance
  • Increased strength, power, and muscle mass (correct)
  • Increased flexibility and range of motion

Hormonal responses to exercise are crucial for what main functions in the body?

  • Regulating metabolism, promoting tissue growth and repair (correct)
  • Controlling motor skills and sensory perception
  • Maintaining bone density and joint lubrication
  • Regulating body temperature and fluid balance

What factors determine the specific adaptations to exercise?

<p>Type, intensity, and duration of training, as well as individual factors (D)</p> Signup and view all the answers

What is a key limitation of the specificity theory of pain?

<p>It does not account for central pain pathways. (B)</p> Signup and view all the answers

According to the gate control theory, what role does the substantia gelatinosa (SG) play in pain modulation?

<p>Inhibits T cells, reducing pain. (A)</p> Signup and view all the answers

In gate control theory, increasing input from large-diameter fibers is thought to do what?

<p>Close the 'gate,' reducing pain perception (B)</p> Signup and view all the answers

Which aspect of the gate control theory has NOT been consistently supported by evidence?

<p>The mechanism of presynaptic inhibition as the primary means of pain modulation. (D)</p> Signup and view all the answers

Why is gradual progression so important when designing a resistance training program for youth?

<p>Youth skeletons, especially growth cartilage, are vulnerable to trauma and overuse. (A)</p> Signup and view all the answers

Which of the following explains why strength gains in pre-adolescents are primarily due to neural factors?

<p>The nervous system adapts more readily than the muscular system in pre-adolescents. (A)</p> Signup and view all the answers

What should a trainer consider when prescribing resistance training to youth in hot and humid environments?

<p>Youth have immature systems, so the trainer should avoid sustained heavy exercise. (A)</p> Signup and view all the answers

Why are boys able to gain strength faster than girls during puberty?

<p>Boys experience hormonal changes that accelerate strength gains. (B)</p> Signup and view all the answers

A youth athlete is experiencing a growth spurt. How should their resistance training program be modified?

<p>Reduce the load and focus on proper form and technique. (A)</p> Signup and view all the answers

What advice should be provided to parents interested in enrolling their child in a resistance training program?

<p>The training volume and intensity should gradually increase over time. (B)</p> Signup and view all the answers

A 10-year-old begins a resistance training program. What adaptation would you expect to contribute most to their initial strength gains?

<p>Neural adaptations. (C)</p> Signup and view all the answers

What is an appropriate guideline for increasing the load in a resistance training program for youth?

<p>Increase loads by 5-10% when proper form is maintained. (C)</p> Signup and view all the answers

Which of the following is a core component of the Neuromatrix Theory of pain?

<p>A widespread network of neurons integrates inputs from the thalamus, cortex, and limbic system to create a 'neurosignature'. (D)</p> Signup and view all the answers

How does the Neuromatrix Theory expand upon the Gate Control Theory of pain?

<p>By proposing a more complex and distributed network of brain regions involved in pain processing. (A)</p> Signup and view all the answers

A patient reports experiencing widespread, diffuse pain that has persisted for several months, even though medical imaging reveals no apparent tissue damage. Which type of pain is MOST likely?

<p>Nociplastic pain (D)</p> Signup and view all the answers

What is the primary function of nociceptors?

<p>To detect potentially harmful stimuli, such as heat, cold, or chemical irritants. (A)</p> Signup and view all the answers

Which statement best describes central sensitization?

<p>An increased responsiveness of the central nervous system, leading to amplified pain experience. (C)</p> Signup and view all the answers

Following a minor burn, a patient experiences a sharp, localized pain at the site of injury. Which type of pain are they MOST likely experiencing?

<p>Nociceptive pain (C)</p> Signup and view all the answers

Which of the following factors can modulate the 'neurosignature' according to the Neuromatrix Theory?

<p>Sensory inputs and cognitive events (D)</p> Signup and view all the answers

A patient has chronic pain with no sign of tissue damage. How would you explain this based on the content provided?

<p>Nociplastic pain is a possible type of pain where disturbances in the central nervous system can create pain without current tissue damage. (A)</p> Signup and view all the answers

During submaximal activity, what is the primary adaptation observed in tidal volume?

<p>Tidal volume increases to enhance oxygen uptake. (B)</p> Signup and view all the answers

How does exercise impact stored ATP levels in muscles?

<p>Stored ATP levels increase, providing more immediate energy for muscle contractions. (C)</p> Signup and view all the answers

Which adaptation occurs in muscle fiber types as a result of exercise?

<p>A positive shift toward Type I fibers for enhanced endurance. (A)</p> Signup and view all the answers

What happens to the size and number of mitochondria in muscle cells as an adaptation to exercise?

<p>Mitochondria size and number both increase, improving energy production. (B)</p> Signup and view all the answers

How does exercise impact the pennation angle of muscles?

<p>Increases pennation angle. (A)</p> Signup and view all the answers

What is the effect of exercise on insulin sensitivity and levels within the body?

<p>Increased sensitivity and reduced levels. (C)</p> Signup and view all the answers

How does exercise affect glucagon levels in the body?

<p>Glucagon levels increase. (B)</p> Signup and view all the answers

What is the primary effect of increased growth hormone secretion during exercise?

<p>Enhanced integrity of muscles, bones, and connective tissues. (A)</p> Signup and view all the answers

What is the MOST important factor to emphasize when designing a resistance training program for youth?

<p>Developing proper form and technique. (A)</p> Signup and view all the answers

Why is consistent evaluation of technical performance by a trained observer important in a youth resistance training program?

<p>To identify and correct improper form, reducing the risk of injury. (D)</p> Signup and view all the answers

In the context of resistance training, what is the recommended approach regarding equipment and modalities?

<p>Employing a multiple-modality approach with free weights, machines, and associated equipment. (B)</p> Signup and view all the answers

What is a key consideration for designing a resistance training program for older adults, keeping in mind that physiological aging does not occur uniformly?

<p>Adjusting the program to accommodate individual differences in physiological response to exercise. (C)</p> Signup and view all the answers

What role does proper feedback play in resistance training programs?

<p>It helps to reinforce correct form, technique, and motivation. (B)</p> Signup and view all the answers

What is the recommended progression in intensity and volume when starting a strength training program?

<p>Progress from 1 set of 8-12 repetitions at 40%-50% 1RM to higher volumes and intensities, such as 3 sets at 60%-80% 1RM. (D)</p> Signup and view all the answers

How should high-velocity power exercises be introduced into a strength training program?

<p>They should be incorporated gradually after a foundation of basic strength has been established. (B)</p> Signup and view all the answers

What is an appropriate set, repetition, and intensity range for high-velocity power exercises aiming to improve conditioning?

<p>1-3 sets of 6-10 repetitions at 40%-60% 1RM (D)</p> Signup and view all the answers

How does relative strength typically relate to body size?

<p>Relative strength is strength relative to cross-sectional area. (C)</p> Signup and view all the answers

What physiological factor explains increased joint flexibility during pregnancy?

<p>Elevated levels of estrogen and relaxin. (C)</p> Signup and view all the answers

What are the three stages of the General Adaptation Syndrome in response to stress?

<p>Alarm, Resistance, Exhaustion (B)</p> Signup and view all the answers

What is 'cross education' in the context of unilateral strength training?

<p>The strength increase in the untrained limb following unilateral training. (C)</p> Signup and view all the answers

What descriptive aspects of pain are typically considered during its clinical evaluation?

<p>Sensation, location, and quality (A)</p> Signup and view all the answers

What is the term for the phenomenon where srength incresaes in the untrained limb following unilateral resistance training?

<p>Cross-Education (D)</p> Signup and view all the answers

What is a chronic physiological adaptation to aerobic exercise training?

<p>Increase in stored creatine phosphate (C)</p> Signup and view all the answers

What is the average increase in muscular strength for untrained individuals after strength training?

<p>40% (D)</p> Signup and view all the answers

Flashcards

Gradual Progression

Increasing exercise intensity and volume slowly as fitness improves.

Proper Nutrition

Adequate protein intake is essential for muscle growth and health.

Skeletal Maturity

Youth have immature skeletons; growth cartilage is vulnerable to injury.

Strength Development

Strength gains before puberty are equal; boys then gain more strength during puberty.

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Nervous System Development

Incomplete myelination affects motor skills and strength in youth.

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Thermoregulation

Youth are more susceptible to heat stress; avoid heavy exercise in heat.

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Resistance Training

Can be safe and effective for youth if supervised and gradually progressed.

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Program Design

Focus on proper form, gradual load increases, and age-appropriate exercises.

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Neuromatrix Theory

A theory explaining pain perception as a network of neurons integrating various brain regions.

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Neurosignature

An individualized pain response resulting from the interaction of sensory inputs and cognitive events.

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Gate Control Theory

A theory suggesting spinal cord mechanisms modulate pain perception through gating.

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Nociceptive Pain

Pain resulting from the activation of nociceptors due to harmful stimuli.

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Nocioplastic Pain

Pain characterized by disturbances in central pain processing, often chronic and widespread.

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Central Sensitization

Increased responsiveness of the central nervous system to pain signals, leading to exaggerated pain perception.

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Types of Pain

Three main categories: nociceptive, nocioplastic, and neuropathic pain.

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Protective Function of Pain

Nociceptive pain serves to signal potential or actual tissue damage, prompting avoidance behavior.

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Aerobic Exercise

Exercise that primarily targets cardiovascular and respiratory systems.

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Anaerobic Exercise

Exercise that primarily targets the neuromuscular system for strength and power.

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Hormonal Response

Body's reaction to exercise that regulates metabolism and tissue repair.

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Exercise Adaptations

Changes in the body due to training type, intensity, and duration.

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Specificity Theory

Theory stating separate nerve endings for each type of sensation.

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Nociceptors

Receptors that respond to noxious (harmful) stimuli and signal pain.

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Central Pain Modulation

Influence of the central nervous system on how pain is perceived.

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Tidal Volume

The amount of air inhaled or exhaled during breathing.

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Muscular Strength

The maximum force a muscle can produce at one time.

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Muscular Endurance

The ability of a muscle to sustain repeated contractions over time.

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Stored ATP

Energy molecule stored in muscles for immediate use during contraction.

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Hypertrophy of Type I Muscle Fibers

Increase in size of slow-twitch muscle fibers for endurance activities.

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Epinephrine's Role in Exercise

Hormone increasing during exercise, enhancing alertness and energy.

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Growth Hormone Adaptation

Hormone that aids in growth, with increased secretion during exercise.

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Insulin Sensitivity

Effect of exercise enhancing the body's response to insulin.

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Multiple-Modality Approach

Incorporating free weights, machines, and equipment in training.

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Proper Form in Youth Training

Focus on developing correct technique during resistance training.

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Feedback Timing

Providing correct feedback at the right moment during training is crucial.

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Technical Performance Evaluation

Regular assessment of technique by a trained observer is necessary.

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Physiologic Aging and Exercise

Responses to exercise can vary greatly among older adults of similar age.

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High-velocity power exercises

Exercise that emphasizes speed with gradually increased intensity.

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Repetition maximum (1RM)

The maximum weight a person can lift for one rep; a benchmark for resistance training.

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Progressive overload

Gradually increasing weights or repetitions to improve strength over time.

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Aerobic exercise hormonal response

Aerobic training increases hormonal circulation and receptor sensitivity.

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Cross-education effects

Gains in strength on one side of the body can benefit the other side during unilateral training.

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Set progression in training

Starting with fewer sets and gradually increasing to enhance strength and endurance.

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Light to moderate load training

Using 40%-60% of 1RM for training with higher repetition velocity.

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Assessment of pain

Understanding pain involves its sensation, location, and the bother it causes a patient.

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Study Notes

Youth Exercise Training

  • Resistance exercise is a safe and effective method for conditioning
  • Can increase muscular strength beyond growth and maturation if intensity and volume are appropriate
  • Variability in strength gain is normal
  • Potential for neural factors (motor unit activation/synchronization) influencing strength increase
  • A multiple-modality approach is recommended

Youth Resistance Training: Potential Benefits

  • Increased muscular strength, power, and endurance
  • Improved psychosocial parameters
  • Enhanced motor skills and sport performance
  • Increased insulin sensitivity and cardiac function
  • Increased bone mineral density
  • Decreased body fat
  • Reduced injury risk

Physiological Responses to Acute Exercise in Youth Compared to Adults

  • Similar to adults in qualitative terms
  • Quantitative differences exist
  • Absolute oxygen uptake is lower in youth
  • Relative oxygen uptake is higher in youth
  • Heart rate is higher in youth
  • Cardiac output is lower in youth
  • Stroke volume is lower in youth
  • Systolic blood pressure is lower in youth
  • Diastolic blood pressure is lower in youth
  • Respiratory rate is higher in youth
  • Tidal volume is lower in youth
  • Minute ventilation is lower in youth
  • Respiratory exchange ratio is lower in youth
  • Anaerobic capacity is lower in youth

Chronological Age vs Biological Age

  • Substantial interindividual differences in physical development at any given chronological age
  • Biological age can be measured by skeletal age, somatic (physique) maturity, or sexual maturation
  • Degree of maturation is related to measures of fitness, including muscular strength and motor skill performance
  • No scientific evidence that physical training delays or accelerates growth or maturation in youth

Special Considerations in Youth

  • Physical activity should include unstructured active play
  • Youth should avoid sustained, heavy exercise in exceptionally hot or humid environments

Resistance Training Guidelines for Youth

  • Low to moderate intensities (6-15 reps, 1-4 sets)
  • 1-3 sets of 3-6 reps are advised for upper and lower body power exercises
  • 2-3 nonconsecutive days per week
  • Gradually increase intensity or load (5-10%) as technique improves
  • Use single and multi-joint exercises (e.g., weightlifting derivatives)
  • Consider a multiple-modality approach (free weights, machines)

Resistance Training: Risks and Concerns

  • Relatively safe compared to other sports and activities
  • Focus on proper form, technique, and correct feedback
  • Regular evaluations of technique by trained observers
  • Gradual progression

Program Considerations for Older Adults

  • Use free weights, multi-joint exercises (balancing and flexibility concerns)
  • Avoid Valsalva maneuver during resistance training
  • Allow 48-72 hours rest between sessions
  • Gradually progress (1 set 8-12 reps at low intensity to higher volumes and intensities)
  • Incorporate high-velocity power exercises (1-3 sets, light-moderate load, 6-10 reps, high velocity)

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