Research Methods in Epidemiology and Testing
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Questions and Answers

What is the primary reason for increased strength observed after one month of regular strength training?

  • Improved neural efficiency in recruiting and activating muscle fibers (correct)
  • Enhanced production of growth hormone and testosterone
  • Increased blood flow and oxygen delivery to muscle tissue
  • Increased muscle fiber size due to hypertrophy
  • Which of the following factors contribute to the neural adaptations that lead to increased strength?

  • Increased motor neuron excitability
  • Reduced neural inhibitory reflexes
  • Improved motor unit synchronization
  • All of the above (correct)
  • Which of the following statements is TRUE regarding the role of Golgi tendon organs in strength training?

  • Golgi tendon organs are primarily responsible for regulating blood flow to muscles
  • Golgi tendon organs inhibit muscle contraction to protect against excessive strain (correct)
  • Golgi tendon organs promote muscle growth by stimulating protein synthesis
  • Golgi tendon organs contribute to increased motor neuron excitability
  • What is the primary mechanism by which resistance training leads to hypertrophy?

    <p>Increased number of parallel sarcomeres within existing muscle fibers (C)</p> Signup and view all the answers

    What is the role of mTOR in muscle adaptation?

    <p>mTOR promotes protein synthesis in response to mechanical stress (C)</p> Signup and view all the answers

    How does the angle of sarcomeres in relation to the direction of contraction affect muscle function?

    <p>Both A and B (B)</p> Signup and view all the answers

    What is the main contributor to increased muscle size in humans?

    <p>Hypertrophy of existing muscle fibers (D)</p> Signup and view all the answers

    Which of the following factors can be used to quantify the effectiveness of an exercise?

    <p>The amount of protein synthesis in the cytosol after exercise (B)</p> Signup and view all the answers

    What effect does increased epinephrine and norepinephrine have on the body, independent of end-diastolic volume (EDV)?

    <p>Increased contractility only (B)</p> Signup and view all the answers

    What is the primary physiological adaptation responsible for increased stroke volume during exercise?

    <p>Increased contractility (C)</p> Signup and view all the answers

    How does vasodilation in active muscles during exercise impact blood flow?

    <p>Both B and C (A)</p> Signup and view all the answers

    What is the primary factor influencing the increase in systolic blood pressure (SBP) during exercise?

    <p>Increased blood flow (D)</p> Signup and view all the answers

    What is the typical response of diastolic blood pressure (DBP) to exercise?

    <p>No significant change (A)</p> Signup and view all the answers

    How does training affect the speed of heart rate recovery after exercise?

    <p>Training increases the speed (D)</p> Signup and view all the answers

    Which training periodization model is generally best suited for athletes who focus on a few skills in each block of training?

    <p>Block periodization (C)</p> Signup and view all the answers

    What is the primary reason why a single training session may not make an athlete better?

    <p>The body's adaptation happens during the rest period (D)</p> Signup and view all the answers

    What happens when training volume is reduced to one session per week?

    <p>Endurance performance noticeably suffers (B)</p> Signup and view all the answers

    Which of the following is NOT a factor to consider when creating a training plan?

    <p>The athlete's genetic predisposition. (B)</p> Signup and view all the answers

    What is the key aspect of the "optimal tapering strategy"?

    <p>Maintaining training intensity while reducing volume. (B)</p> Signup and view all the answers

    What is the main reason why early developers might be favored in sports like ball games?

    <p>They often possess greater strength and power. (A)</p> Signup and view all the answers

    What happens to 'easy' adaptations like plasma volume during detraining?

    <p>They disappear quickly within days or weeks. (C)</p> Signup and view all the answers

    What is the main reason why 'hard' adaptations like ventricular mass take longer to disappear?

    <p>They involve structural changes in the body. (D)</p> Signup and view all the answers

    Which of the following statements regarding late developers in sports is NOT true?

    <p>Their late development is primarily due to increased training intensity. (B)</p> Signup and view all the answers

    What is the key aspect of avoiding detraining?

    <p>Identifying a key training session to focus on and adjusting other sessions accordingly. (B)</p> Signup and view all the answers

    Which of these is a possible reason for physical inactivity?

    <p>All of the above (D)</p> Signup and view all the answers

    What is the main purpose of medical clearance before starting an exercise program?

    <p>Both A and B (D)</p> Signup and view all the answers

    According to the WHO, what is health defined as?

    <p>A state of complete physical, mental, and social well-being (C)</p> Signup and view all the answers

    Which of the following is NOT a sign suggestive of cardiopulmonary disease?

    <p>Muscle soreness (C)</p> Signup and view all the answers

    Which of the following factors can contribute to menstrual dysfunction in female athletes?

    <p>Low body fat percentage (C)</p> Signup and view all the answers

    What is meant by 'heart rate variability'?

    <p>Fluctuations in the intervals between heartbeats (D)</p> Signup and view all the answers

    What is the primary concern for exercising during pregnancy?

    <p>Foetal hyperthermia (A)</p> Signup and view all the answers

    How does a 'training load key' help individuals understand their exercise sessions?

    <p>It assesses the effectiveness of an exercise session on performance capabilities (C)</p> Signup and view all the answers

    How does 'TRIMP' quantify training load?

    <p>By combining the duration and intensity of exercise (D)</p> Signup and view all the answers

    Which of the following statements about ergogenic aids is true?

    <p>Pharmacological aids may stimulate the central nervous system. (C)</p> Signup and view all the answers

    What does RED-S stand for?

    <p>Relative energy deficit in sports (C)</p> Signup and view all the answers

    What is the main difference between using PPG and chest straps to measure heart rate?

    <p>Accuracy: chest straps provide more precise measurements (A)</p> Signup and view all the answers

    During which menstrual phase is maximal force likely greatest?

    <p>Follicular phase (A), Menstrual phase (C)</p> Signup and view all the answers

    Which of the following is NOT a potential effect of exercise mimetics?

    <p>Weight loss through caloric burn (D)</p> Signup and view all the answers

    What is a common outcome of low energy availability in athletes?

    <p>Increased risk of osteoporosis (D)</p> Signup and view all the answers

    Which type of exercise is recommended for pregnant women?

    <p>Non-weight bearing exercises (B)</p> Signup and view all the answers

    What is the main reason for the increase in blood lactate during exercise?

    <p>Both increased production and decreased removal of lactate. (C)</p> Signup and view all the answers

    What is the difference between the lactate threshold and the OBLA?

    <p>The lactate threshold is the point where lactate production exceeds removal, while the OBLA is the point where the lactate production rate rapidly increases. (D)</p> Signup and view all the answers

    How does lactate contribute to fatigue during exercise?

    <p>Lactate buildup decreases pH, which can impair muscle function and cause pain, potentially leading to reduced motivation. (B)</p> Signup and view all the answers

    Which of the following statements about lactate as a fuel source is TRUE?

    <p>Lactate can be shuttled to other tissues to be used as energy. (C)</p> Signup and view all the answers

    Which of the following is NOT a factor contributing to central fatigue during exercise?

    <p>Reduced glycogen stores in the muscle. (A)</p> Signup and view all the answers

    Which of the following is a TRUE statement about the relationship between lactate and fatigue?

    <p>High lactate levels can contribute to fatigue, but are not the only factor. (C)</p> Signup and view all the answers

    Which type of muscle fiber has a better intracellular buffer system for dealing with lactate?

    <p>Type II fibers. (A)</p> Signup and view all the answers

    Why does lactate increase in the blood during exercise, even when there is sufficient oxygen present?

    <p>The production of lactate is a natural byproduct of glycolysis, even in the presence of oxygen. (A)</p> Signup and view all the answers

    Flashcards

    Recovery between sets

    ATP stores must be refilled in strength training due to reliance on anaerobic energy.

    Absolute load in strength training

    The weight used does not matter as long as exercises are performed to exhaustion.

    Neural factors in strength improvement

    Initial strength gains are due to neural efficiency, not muscle changes.

    Strength training specificity

    Training is specific to certain muscles and movements. Different exercises yield different results.

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    Hypertrophy

    Muscle growth occurs due to an increase in parallel sarcomeres rather than just water retention.

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    Hyperplasia

    Development of new muscle fibers occurs mainly in animals; humans typically grow existing fibers larger.

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    mTOR in muscle adaptation

    mTOR activation leads to protein synthesis and is crucial for muscle growth after exercise stress.

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    Role of mechanical stimuli

    Mechanical stress during exercise promotes hypertrophy through mTOR activation and other factors.

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    Type II fibres

    Muscle fibres with better intracellular buffer system than Type I.

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    Lactate threshold

    Point where lactate in blood begins to increase due to higher production than breakdown.

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    OBLA

    Onset of Blood Lactate Accumulation; steeper rise in blood lactate on exertion graph.

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    Causes of fatigue

    Includes central fatigue (brain) and peripheral fatigue (muscle).

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    Role of lactate in fatigue

    Lactate not solely responsible; K+ also contributes, while acids mitigate effects.

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    Lactate shuttling

    Process where lactate exits muscle for energy redistribution.

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    Impact of pH during exercise

    pH decreases during exercise, leading to increased lactate and decreased bicarbonate.

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    Fat as energy source

    During long exercises, fat becomes the main energy source after some duration.

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    Cardiorespiratory adaptations

    Improvements in cardiac output, capillary density, and ventilation from aerobic training.

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    Optimal Tapering Strategy

    A strategy that involves reducing training volume by 40-60% for 2 weeks while maintaining intensity and frequency.

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    Menstrual cycle impact on performance

    Exercise performance varies across menstrual phases; maximal force is highest during menstruation and the follicular phase.

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    Detraining

    Loss of adaptations such as plasma volume and glycogen that occur quickly after stopping training.

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    Maintenance of VO2max

    Reducing training frequency to once a week can keep VO2max, but endurance performance declines.

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    Menstrual dysfunction types

    Eumenorrhea (normal), oligomenorrhea (irregular), amenorrhea (absent periods); common in lean athletes.

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    Relative Energy Deficit in Sports (RED-S)

    Condition from low energy intake and high energy expenditure, leading to negative health effects.

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    Key Training Session

    A crucial workout to assess where an athlete stands, focusing on endurance, strength, or power.

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    Growth vs Development

    Growth is increasing size, while development refers to functional changes in physiological capacities.

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    Symptoms of RED-S

    Includes disordered eating, amenorrhea, and lower bone density due to energy deficit.

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    Chronical Age vs Biological Age

    Chronical age is based on birth date, whereas biological age is measured by skeletal age or maturation stage.

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    Osteoporosis in female athletes

    Bone density loss often linked to low estrogen and inadequate calcium intake; associated with RED-S.

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    Ergogenic aids

    Substances or methods that enhance exercise performance or reduce limitations on performance.

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    Skeletal Age Assessment

    Evaluating skeletal age through standard bone age atlas images or detailed bone scoring methods.

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    Epiphyseal Plate

    The growth plate that disappears once skeletal maturation is complete, signaling the end of growth.

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    Exercise mimetics

    Pharmacological compounds that mimic exercise benefits without physical activity; often banned.

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    Epinephrine and Norepinephrine

    Hormones that mediate contractility, increasing stroke volume independent of end-diastolic volume.

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    Afterload

    The pressure in the aorta that the heart must overcome to eject blood.

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    Cardiac Output (CO)

    The volume of blood the heart pumps per minute, calculated as heart rate times stroke volume.

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    Vasodilation

    The widening of blood vessels, increasing blood flow, particularly to active muscles during exercise.

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    Systolic Blood Pressure (SBP)

    Blood pressure during the contraction of the heart, tends to increase with exercise.

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    Heart Rate Recovery

    The speed at which heart rate returns to resting levels after exercise; improves with training.

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    Supercompensation

    The training principle where recovery leads to increased athletic performance.

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    Training Volume

    The amount of training (frequency, intensity, duration), important for performance and recovery.

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    Heart rate measurement methods

    Heart rate is measured using PPG or chest straps, where chest straps are more accurate.

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    Performance condition on Garmin

    This feature assesses your fitness ability during the first 10 minutes of activity.

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    Heart rate variability

    Fluctuation in RR intervals of EEG; high variability indicates good parasympathetic function.

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    TRIMP (Training Impulse)

    A method to quantify training load through a single number considering time and intensity.

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    Training load key

    A rating from 1-5 indicating the effect of a session on performance capacity.

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    Health score

    A score between 1-1000 representing overall health, normalized by age and sex.

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    WHO definition of health

    Health is seen as physical, mental, and social well-being, not just absence of disease.

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    Signs of cardiopulmonary disease

    Symptoms include chest pain, shortness of breath, dizziness, and ankle edema.

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    Study Notes

    Research Methods

    • Epidemiology vs. Field/Lab Testing: Epidemiology investigates disease presence/absence factors, prevalence, incidence, and societal/economic impact. It's observational, using large participant numbers and questionnaires. Conversely, field/lab testing offers more objective cause-and-effect conclusions, but relies on smaller participant numbers and is more expensive.

    Cross-Sectional vs. Longitudinal Studies

    • Cross-Sectional: Collects data from numerous individuals at a single time point. Useful for initial comparisons and hypothesis generation but cannot determine cause-and-effect.

    • Longitudinal: Examines the same individuals over an extended period. Allows for the study of changes over time and cause-and-effect relationships, but is time consuming and resource intensive.

    Field vs. Lab Tests

    • Field Tests: Measures activity in natural environments (e.g., running in a park). Allows for more realistic contexts but can be confounded by uncontrolled variables such as weather or the presence of other participants.

    • Lab Tests: Measures activity in controlled laboratory settings (e.g., on a treadmill). Reduces variability but may not accurately reflect real-world conditions.

    Measurement Devices

    • Choosing the right device: When assessing physical ability, choose the most appropriate measurement method based on the participant's needs and abilities (e.g., a bicycle vs. a treadmill).

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    Explore the differences between various research methods in epidemiology, field testing, and lab testing. Learn about cross-sectional and longitudinal studies, including their advantages and limitations. This quiz will test your understanding of how these methodologies impact research outcomes.

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