Exercise Physiology Week 3: Resistance Training
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Questions and Answers

What happens if the body does not receive adequate recovery time?

  • It will maintain current fitness levels.
  • It will enhance its response to training.
  • It will break down or resist the stimulus. (correct)
  • It will become more fit.

As fitness levels increase, strength and endurance gains become larger indefinitely.

False (B)

What is the ratio of training to rest for muscular adaptations?

1:3

The principle of training that states you will lose benefits once training stops is called __________.

<p>reversibility</p> Signup and view all the answers

Match the principle of training to its description:

<p>Diminishing Returns = Gains decrease as fitness levels increase Maintenance = Less effort needed to maintain adaptations Reversibility = Loss of benefits when training stops F.I.T.T. = Guidelines for frequency, intensity, time, and type</p> Signup and view all the answers

Which factor is most important for maintaining strength?

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

Training at a high intensity requires rest periods that are shorter than the duration of the training.

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

What components are included in the F.I.T.T. principle?

<p>Frequency, Intensity, Time, Type</p> Signup and view all the answers

What is the primary purpose of the proposed model for delayed onset muscle soreness (DOMS)?

<p>To outline the sequence of events leading to muscle soreness (B)</p> Signup and view all the answers

What is a primary cause of muscle atrophy?

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

Progressive overload in training helps to prevent delayed onset muscle soreness (DOMS).

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

Name one method that can reduce delayed onset muscle soreness (DOMS).

<p>Active recovery</p> Signup and view all the answers

Muscle soreness due to DOMS typically occurs immediately after exercise.

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

What happens to protein synthesis after immobilization begins?

<p>It starts to decrease.</p> Signup and view all the answers

Several supplements that may reduce the impact of DOMS include L-___ and caffeine.

<p>glutamine</p> Signup and view all the answers

Match the supplements with their potential impact on DOMS:

<p>L-Glutamine = Reduces muscle soreness Caffeine = Enhances recovery Creatine = Improves strength Fish Oil = Reduces inflammation</p> Signup and view all the answers

Muscle soreness that occurs during the latter stages of exercise is known as __________.

<p>acute soreness</p> Signup and view all the answers

Which of the following is NOT part of the sequence of events leading to DOMS?

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

Match the type of muscle soreness with its description:

<p>Acute soreness = Occurs during exercise and right after DOMS = Feels after 12-48 hours post-exercise</p> Signup and view all the answers

Which principle of training emphasizes that adaptations are specific to the type of activity and its intensity?

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

The principle of individuality states that every person will respond the same way to a given training stimulus.

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

How much strength loss may occur during the first week due to muscle atrophy?

<p>3-4% per day (A)</p> Signup and view all the answers

Edema and pain are consequences of the inflammation response during DOMS.

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

What does DOMS stand for?

<p>Delayed Onset Muscle Soreness</p> Signup and view all the answers

Acute muscle soreness is thought to be primarily caused by ischemia.

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

What is the most important strength training principle that states the level of stress must increase gradually?

<p>Progressive Overload</p> Signup and view all the answers

What type of muscle contraction primarily contributes to delayed onset muscle soreness?

<p>Eccentric contraction</p> Signup and view all the answers

The body requires time to __________ and adapt between training stimuli.

<p>recover</p> Signup and view all the answers

An example of the specificity principle would be:

<p>A high jumper emphasizing jumping exercises over distance running. (C)</p> Signup and view all the answers

According to the principle of progressive overload, the level of stress should decrease over time.

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

What does S.A.I.D.S stand for in the context of exercise physiology?

<p>Specific Adaptations to Imposed Demands</p> Signup and view all the answers

Match the following training principles with their descriptions:

<p>Specificity = Training adaptations are specific to the type of activity Individuality = Responses to training vary among individuals Progressive Overload = Stress level must gradually increase Recovery = Time needed for the body to adapt between training</p> Signup and view all the answers

What primarily influences early increases in strength during the first 6-8 weeks of training?

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

Fiber hypertrophy refers to the increase in the number of muscle fibers in a muscle.

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

What is the role of testosterone in muscle adaptations?

<p>Testosterone promotes muscle growth and is an anabolic hormone.</p> Signup and view all the answers

Muscle hyperplasia is proposed to occur through __________, where muscle fibers can split in half with intense weight training.

<p>longitudinal fiber splitting</p> Signup and view all the answers

Match the type of muscle fiber to its potential for hypertrophy:

<p>Type I = Lower potential for hypertrophy Type II = Greater potential for hypertrophy</p> Signup and view all the answers

What is a chronic adaptation of muscle size over time?

<p>Increase in fiber size and number (A)</p> Signup and view all the answers

What is a common cause of delayed onset muscle soreness (DOMS)?

<p>Physical disruption of the muscle (B)</p> Signup and view all the answers

Increased central drive and firing frequencies are key components of neural learning in strength training.

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

What typically happens to strength gains after an initial rapid increase?

<p>A plateau in strength gains is reached.</p> Signup and view all the answers

Maximum force-generating capacity returns immediately after experiencing DOMS.

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

What component of training can help reduce DOMS, especially in early training?

<p>Eccentric component reduction</p> Signup and view all the answers

The total weight lifted increases as the weight classification __________.

<p>increases</p> Signup and view all the answers

What benefit results from increased amounts of contractile protein in muscle fibers?

<p>More cross-bridges for muscle contraction (B)</p> Signup and view all the answers

DOMS is most likely necessary to maximize the __________ response.

<p>training</p> Signup and view all the answers

Match the following muscle soreness types with their characteristics:

<p>DOMS = Caused by structural damage to muscle cells EAMCS = Related to sustained alpha motor neuron activity</p> Signup and view all the answers

Which factor is often associated with exercise-associated muscle cramps (EAMCS)?

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

Passive stretching is not an effective treatment for muscle cramps.

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

What training principle should be followed to reduce muscle soreness after intense exercise?

<p>Progressive overload</p> Signup and view all the answers

Strength training can increase knee extensor strength even in the __________.

<p>elderly</p> Signup and view all the answers

Which adaptation is NOT associated with endurance training?

<p>Decreased oxidation of free fatty acids (A)</p> Signup and view all the answers

Resistance training can benefit individuals regardless of gender or age.

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

What percentage of 1-RM was used in week 1 of the resistance training program for the elderly?

<p>50%</p> Signup and view all the answers

Acute muscle soreness occurs during the __________ stages of an exercise bout.

<p>latter</p> Signup and view all the answers

What happens to muscle glycogen synthesis during DOMS?

<p>It is impaired (C)</p> Signup and view all the answers

Match the strength training adaptations with their effects:

<p>Increased muscle size = Hypertrophy Increased muscle strength = Enhanced performance Correct muscle fiber type change = Fast to slow twitch Increased capillary density = Improved nutrient delivery</p> Signup and view all the answers

Flashcards

Recovery and Adaptation

The body requires adequate recovery time to adapt to training stimuli. Insufficient recovery can lead to injury or overtraining.

Diminishing Returns

As fitness levels increase, the rate of improvement slows down. It becomes harder to make significant gains.

Maintenance

Maintaining fitness requires less effort than achieving it initially. This means you need to consistently maintain your training to keep your gains.

Reversibility

When training stops, the body gradually reverts back to its baseline fitness level. The rate of decline depends on the type of stimulus.

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F.I.T.T. Principles

Training principles that guide the planning and implementation of effective training programs.

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Frequency (F.I.T.T.)

The frequency of training refers to the number of times you train per week.

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Intensity (F.I.T.T.)

The intensity of training refers to the difficulty or effort level of your workouts.

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Time (F.I.T.T.)

The time spent in each training session. This could be the duration of the workout or the number of sets and reps.

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Specificity

Training adaptations are specific to the type of activity and the volume/intensity of training. The body will adapt to the demands placed on it. "Specific Adaptations to Imposed Demands." (S.A.I.D.S)

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Individuality

Each individual responds differently to training stimuli. Therefore, every training program should be tailored to the individual.

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Progressive overload

As the body adapts to a training stimulus, the level of stress must increase gradually for continued adaptation. This is the most important principle for strength training.

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Recovery

The body needs time to recover and adapt after training. This time is crucial for muscle growth and repair.

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Effects of resistance training on the nervous system

Resistance training can cause changes to the nervous system, such as increased recruitment of motor units.

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Effects of resistance training on skeletal muscle size

Resistance training can lead to increased muscle size and strength. This is due to hypertrophy, or an increase in muscle protein synthesis.

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De-training

If training is stopped or significantly decreased, the body will lose muscle size and strength. This is known as de-training.

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Effects of exercise on muscle fatigue, soreness, and cramps

Exercise can cause muscle fatigue, soreness, and cramps. These are normal responses to the stress of exercise.

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Neural Adaptations for Strength

The initial increase in strength is primarily driven by improvements in the nervous system, such as better coordination and synchronization of motor units.

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Muscle Hypertrophy for Strength

Strength gains after the initial 6-8 weeks are primarily due to muscle hypertrophy, or an increase in muscle fiber size.

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Types of Muscle Growth

The transient pump is the temporary increase in muscle size during a workout, caused by fluid accumulation. Chronic muscle growth is long-term enlargement due to increased fiber size and potentially number.

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What Happens During Hypertrophy?

Muscle hypertrophy involves an increase in the number and size of myofibrils within each muscle fiber.

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Protein Balance for Hypertrophy

Increased protein synthesis, the process of building new muscle protein, outweighs protein breakdown.

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Muscle Hyperplasia

Muscle fibers can potentially split in half through intense training, with each half growing to the size of the original fiber.

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Fiber Type and Hypertrophy

The potential for muscle growth is greater in fast-twitch (Type II) fibers compared to slow-twitch (Type I) fibers.

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The Muscle Growth Process

Training triggers a cascade of events, starting with muscle damage, metabolic stress, and mechanical tension, which leads to hormonal signaling and ultimately protein synthesis.

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Hormonal Roles in Muscle Growth

Testosterone and growth hormone play crucial roles in muscle growth, along with the release of IGF-1 and its conversion to MGF.

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Muscle Size and Strength Correlation

The strength of arm flexor muscles is directly related to their cross-sectional area, highlighting the importance of muscle size for strength.

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What is DOMS?

Muscle soreness that appears 12-72 hours after strenuous exercise, due to microscopic muscle tears and inflammation.

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What is Progressive Overload?

The process of gradually increasing training intensity to challenge the body and promote adaptations.

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What is Active Recovery?

The process of actively helping the body recover after exercise to reduce DOMS and promote healing.

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What is L-Glutamine?

A type of protein that helps build and repair muscle tissue, and can potentially aid in DOMS recovery.

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How does Caffeine affect DOMS?

A stimulant that can improve athletic performance by increasing energy levels and reducing perceived exertion.

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What is Creatine?

A compound naturally found in muscle that can increase muscle mass and strength, potentially aiding in DOMS recovery.

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What is Fish Oil?

A type of fatty acid found in fish oil that can reduce inflammation and improve joint health, potentially aiding in DOMS recovery.

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What is Taurine?

An amino acid that plays a role in muscle function and can potentially aid in DOMS recovery.

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Muscle Atrophy

A decrease in muscle size and strength, primarily caused by reduced protein synthesis and increased protein breakdown. This happens when muscles are not used regularly.

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Immobilization Atrophy

Muscle atrophy that occurs due to lack of movement or inactivity. This can happen after an injury, surgery, or prolonged bed rest.

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Disuse Atrophy

Muscle atrophy that occurs due to a decrease in physical activity or training. This can happen if you stop exercising regularly.

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Acute Muscle Soreness

A type of muscle soreness that occurs during exercise and immediately after, often due to a temporary lack of blood flow to the working muscles.

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Delayed Onset Muscle Soreness (DOMS)

A type of muscle soreness that typically develops 12-48 hours after a strenuous exercise session. It's often associated with eccentric muscle contractions, where the muscle lengthens while resisting a force.

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Eccentric Muscle Action

Muscle contractions that involve lengthening the muscle while resisting a force, such as lowering a weight during a bicep curl. This type of contraction is often linked to DOMS.

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Metabolic Waste Accumulation

The build-up of metabolic byproducts, such as lactic acid and potassium, in the working muscles when blood flow is reduced. This can contribute to acute muscle soreness.

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Pain Receptors in Muscles

Pain receptors located in muscles that are stimulated by various factors, including metabolic waste buildup, leading to the sensation of muscle soreness.

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DOMS: Impact on Performance

The decrease in muscle force-generating capacity caused by physical disruption, excitation-contraction failure and loss of contractile protein.

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Reducing DOMS

Reducing the amount of eccentric activity early in training and following gradual overload principles.

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Exercise Associated Muscle Cramps (EAMCs)

Muscle cramps occurring during or after exercise, often at night, due to fluid/electrolyte imbalances, sustained muscle activity, changes in muscle receptors, and fatigue.

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EAMCs: Effective Treatment

Rest, passive stretching, and holding the muscle in a stretched position.

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EAMCs: Prevention Strategies

Proper conditioning, regular stretching, and a balanced diet rich in electrolytes.

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Causes of Muscle Soreness: DOMS and EAMCs

Accumulation of metabolic byproducts, tissue edema, eccentric muscle action emphasized during training, structural muscle cell damage, inflammation reactions, sustained muscle activity, muscle fatigue, increased spindle activity, and decreased tendon organ activity.

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Acute Muscle Soreness: When It Occurs

Occurs during the later stages of exercise and the immediate recovery period.

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DOMS: When It Occurs

Occurs a day or two after a strenuous workout.

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EAMCs: When It Occurs

Occurs at night while sleeping or during the peak of competition or immediately after.

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Strength Training Improves Knee Extensor Strength in Elderly

A 4-8 week strength training program that increases knee extensor strength in individuals aged 87-96, with significant gains in functional mobility.

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Endurance Training: Adaptations

Changes in muscle fiber type from fast to slow, increased capillary density, increased mitochondrial density for ATP production, increased free fatty acid oxidation, and increased FFA transportation into the muscle.

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Endurance Training: Considerations

Interval training, continuous training, and circuit training.

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Strength Training: Adaptations

Increased muscle size (hypertrophy), increased muscle strength, change in muscle fiber type from slow to fast twitch, increased capillary density with high frequency, repetitions, and volume, may decrease mitochondrial density, improves muscle antioxidant capacity, and protects against free radical damage.

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Resistance Training: Benefits

A well- designed resistance training program can benefit almost everyone, regardless of gender, age, athletic involvement, or sport.

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Study Notes

Exercise Physiology: Week 3 - Adaptations and Principles of Resistance Training

  • Specificity (SAIDs): Training adaptations are highly specific to the type of activity and its volume/intensity. SAIDs = Specific Adaptations to Imposed Demands. Improving muscular power requires activities like jumping, not distance running.

  • Individuality: Every person responds differently to training stimuli, so programs must be tailored to individual needs.

  • Progressive Overload: For continued adaptation, the stress level must gradually increase. This is crucial for strength training.

  • Recovery: The body needs time to recover and adapt between training sessions. Insufficient recovery can lead to injury or overtraining.

Muscle Adaptations: Strength

  • Neural Learning Component: Early increases in strength are primarily influenced by neural adaptations (first 6-8 weeks).

  • Muscle Fiber Hypertrophy: Increases in strength beyond the initial neural adaptations are mainly due to muscle fiber hypertrophy (increase in size) and cellular adaptations.

  • Plateau: Eventually, a plateau is reached, and significant increases in strength may come from ergogenic aids (performance enhancing substances).

Muscle Adaptations: Size

  • Transient "Pump": A temporary increase in muscle size during a single training session due to fluid accumulation.

  • Chronic Increase: Long-term increases in muscle size are due to fiber size (hypertrophy) and the number of fibers (hyperplasia).

Muscle Adaptations: Hypertrophy

  • Increased Myofibrils: Hypertrophy leads to an increased number and size of myofibrils per muscle fiber.

  • Increased Contractile Protein: There's a greater amount of contractile protein (actin and myosin).

  • Increased Sarcoplasm: Sarcoplasm increases (glycogen, myoglobin, etc.) increasing oxygen availability.

Muscle Adaptations: Atrophy

  • Decrease in Size: Atrophy is a decrease in muscle size and strength loss.

  • Causes of Atrophy: Reasons for this include immobilization, disuse (cessation or reduction of training), and insufficient energy (food) intake

Muscle Soreness: Acute

  • Blood Flow Impairment: Soreness during and immediately after exercise is often attributed to reduced blood flow (ischemia) to working muscles.

  • Metabolic Waste Buildup: Metabolic waste products like lactic acid and potassium build up, stimulating pain receptors.

Muscle Soreness: Delayed Onset (DOMS)

  • Eccentric Exercise: DOMS is primarily caused by eccentric exercise, where the muscle lengthens while contracting.

  • Structural Damage: This leads to structural damage in muscle cells, triggering inflammation (edema) and pain.

Training Effects: Endurance Training

  • Capillary Density: Endurance training increases capillary density in muscles.

  • Muscle Fiber Type: This also leads to changes in muscle fiber type, shifting from fast to slower-twitch fibers.

  • Mitochondrial Density: Mitochondrial density increases, allowing for greater ATP production.

  • FFA Oxidation: Increased oxidation of free fatty acids is also noticeable

Training Effects: Strength Training

  • Hypertrophy: Strength training primarily leads to muscle hypertrophy, increasing the size of existing muscle fibers.

  • Increased Contractile Protein: Muscle strength is enhanced because of increases in contractile protein levels.

  • Muscle Fiber Type Transition: There is a possible change towards a greater number of fast twitch fibers.

  • Improved Antioxidant Capacity: Oxidative stress is reduced due to the increase in antioxidant capacity.

Program Design

  • Dynamic Programs: Using a variety of types of training programs
  • Needs Analysis: Analyzing individual needs and goals is crucial.
  • Training Methods: Various training methods (e.g., single sets, multi-sets) and periodization models are used
  • Injury Prevention: Analyzing potential injury sites is an important part.

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Delve into the principles of resistance training in this Week 3 quiz on Exercise Physiology. Explore key concepts such as specificity, individuality, progressive overload, and recovery. Understand how muscle adaptations and neural learning play crucial roles in strength development.

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