Podcast
Questions and Answers
What is muscular strength defined as?
What is muscular strength defined as?
- The maximal force a muscle or muscle group can exert during a contraction (correct)
- The maximal capacity of the heart to deliver oxygen
- The range of motion available at a joint
- The ability to exert a force repeatedly over time
Which of the following is NOT a major component of physical fitness?
Which of the following is NOT a major component of physical fitness?
- Cardiovascular Endurance
- Dietary Balance (correct)
- Flexibility
- Muscular Fitness
What percentage of total resistance during joint movement is contributed by ligaments?
What percentage of total resistance during joint movement is contributed by ligaments?
- 41%
- 2%
- 47% (correct)
- 10%
Which factor does NOT influence flexibility?
Which factor does NOT influence flexibility?
What describes cardiovascular endurance?
What describes cardiovascular endurance?
What external factor is essential for lengthening a muscle fiber?
What external factor is essential for lengthening a muscle fiber?
How does muscular endurance differ from muscular strength?
How does muscular endurance differ from muscular strength?
Which of the following factors can affect flexibility due to past injury?
Which of the following factors can affect flexibility due to past injury?
What happens to a very fit person regarding further improvements in performance?
What happens to a very fit person regarding further improvements in performance?
What does the introduction of a new exercise primarily affect?
What does the introduction of a new exercise primarily affect?
Which stage in the General Adaptation Syndrome model is characterized by an initial burst of energy in response to stress?
Which stage in the General Adaptation Syndrome model is characterized by an initial burst of energy in response to stress?
During the alarm stage of General Adaptation Syndrome, which hormones are released?
During the alarm stage of General Adaptation Syndrome, which hormones are released?
What is one effect of stress on an individual according to the General Adaptation Syndrome model?
What is one effect of stress on an individual according to the General Adaptation Syndrome model?
How long does the 'remarkable gains' phase in the alarm stage typically last?
How long does the 'remarkable gains' phase in the alarm stage typically last?
What is one typical consequence of the resistance stage in General Adaptation Syndrome?
What is one typical consequence of the resistance stage in General Adaptation Syndrome?
What does excessive chronic stress during the exhaustion stage typically lead to?
What does excessive chronic stress during the exhaustion stage typically lead to?
What is the primary function of the Phosphagen System?
What is the primary function of the Phosphagen System?
What is the maximum duration for which anaerobic glycolysis can efficiently produce ATP?
What is the maximum duration for which anaerobic glycolysis can efficiently produce ATP?
Which statement best describes aerobic glycolysis?
Which statement best describes aerobic glycolysis?
Which component is NOT part of the Phosphagen System?
Which component is NOT part of the Phosphagen System?
What is the primary source of energy for anaerobic glycolysis?
What is the primary source of energy for anaerobic glycolysis?
What restricts the anaerobic glycolysis system during sustained activity?
What restricts the anaerobic glycolysis system during sustained activity?
How long does the Phosphagen System typically provide energy?
How long does the Phosphagen System typically provide energy?
Which factor does NOT influence the contribution of energy systems?
Which factor does NOT influence the contribution of energy systems?
What is a key source of energy for aerobic glycolysis?
What is a key source of energy for aerobic glycolysis?
Which statement about ATP production in aerobic glycolysis is true?
Which statement about ATP production in aerobic glycolysis is true?
What is the first step in the Hold-Relax with Agonist contraction PNF stretching method?
What is the first step in the Hold-Relax with Agonist contraction PNF stretching method?
What is the primary characteristic of PNF stretching that makes it effective?
What is the primary characteristic of PNF stretching that makes it effective?
According to the principle of Specificity, what is essential for a training program?
According to the principle of Specificity, what is essential for a training program?
During the Contract-Relax PNF stretching method, what is the immediate action after the individual pushes against the trainer's force?
During the Contract-Relax PNF stretching method, what is the immediate action after the individual pushes against the trainer's force?
What does the principle of Diminishing Returns state?
What does the principle of Diminishing Returns state?
What occurs when training ceases, according to the principle of Reversibility?
What occurs when training ceases, according to the principle of Reversibility?
In PNF stretching, what is performed after the individual relaxes in the Hold-Relax method?
In PNF stretching, what is performed after the individual relaxes in the Hold-Relax method?
Which of the following is a major goal of applying the Overload principle?
Which of the following is a major goal of applying the Overload principle?
What is involved in the first step of the Contract-Relax PNF technique?
What is involved in the first step of the Contract-Relax PNF technique?
In the context of PNF stretching, what best describes the term 'agonist'?
In the context of PNF stretching, what best describes the term 'agonist'?
What is the outcome of systematically applying the principle of Progression in training?
What is the outcome of systematically applying the principle of Progression in training?
How long should each hold occur during the Hold-Relax phase of PNF stretching?
How long should each hold occur during the Hold-Relax phase of PNF stretching?
What does the term 'autogenic inhibition' refer to in PNF stretching?
What does the term 'autogenic inhibition' refer to in PNF stretching?
What effect does applying the Overload principle have on an individual’s training approach?
What effect does applying the Overload principle have on an individual’s training approach?
What role does the agonist muscle play during a bicep curl?
What role does the agonist muscle play during a bicep curl?
Which muscle group would be considered the antagonist during the upward phase of a bicep curl?
Which muscle group would be considered the antagonist during the upward phase of a bicep curl?
What characterizes an eccentric contraction?
What characterizes an eccentric contraction?
What is the primary function of synergist muscles during a joint action?
What is the primary function of synergist muscles during a joint action?
During which phase of a bicep curl does the biceps brachii exhibit concentric contraction?
During which phase of a bicep curl does the biceps brachii exhibit concentric contraction?
Which of the following best defines the antagonist muscle's role?
Which of the following best defines the antagonist muscle's role?
Which type of muscular contraction involves the muscle overcoming a resistive force while shortening?
Which type of muscular contraction involves the muscle overcoming a resistive force while shortening?
In terms of muscle function during movement, what is a key characteristic of synergist muscles?
In terms of muscle function during movement, what is a key characteristic of synergist muscles?
What is the correct definition of the anatomical position?
What is the correct definition of the anatomical position?
Which plane of motion divides the body into top and bottom halves?
Which plane of motion divides the body into top and bottom halves?
In anatomical terminology, what does 'proximal' refer to?
In anatomical terminology, what does 'proximal' refer to?
According to Newton’s 1st Law, what will happen to a body at rest?
According to Newton’s 1st Law, what will happen to a body at rest?
Which category does the Law of Reaction fall under in Newton's laws?
Which category does the Law of Reaction fall under in Newton's laws?
What does 'medial' refer to in anatomical terms?
What does 'medial' refer to in anatomical terms?
What is the relationship between the force and mass as described in Newton’s 2nd Law?
What is the relationship between the force and mass as described in Newton’s 2nd Law?
Which of the following describes the action of muscles during a bicep curl at the sticking point?
Which of the following describes the action of muscles during a bicep curl at the sticking point?
Which of the following terms refers to being closer to the body surface?
Which of the following terms refers to being closer to the body surface?
What is kinesiology primarily the study of?
What is kinesiology primarily the study of?
Which muscle action is best characterized by an eccentric contraction?
Which muscle action is best characterized by an eccentric contraction?
What are the three planes of motion in kinesiology?
What are the three planes of motion in kinesiology?
How does understanding kinesiology benefit personal trainers?
How does understanding kinesiology benefit personal trainers?
Which term describes movement toward the back of the body?
Which term describes movement toward the back of the body?
Flashcards
PNF Stretching
PNF Stretching
Proprioceptive neuromuscular facilitation (PNF) stretching is a type of stretching that uses contractions to increase flexibility and range of motion.
Contract-Relax PNF
Contract-Relax PNF
A type of PNF stretching that involves a pre-stretch followed by a concentric contraction of the targeted muscle group. The muscle is then relaxed, allowing passive stretch.
Hold-Relax PNF
Hold-Relax PNF
PNF stretching involving a passive pre-stretch, a 6-second isometric contraction, followed by a passive stretch.
Specificity (Training)
Specificity (Training)
Only the parts of the body used in the training program will improve.
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Progression (Training)
Progression (Training)
Gradually increasing the intensity or duration of training.
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Overload (Training)
Overload (Training)
Increasing the physical demands on the body beyond its normal load.
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Reversibility (Training)
Reversibility (Training)
Stopping training leads to decreased fitness levels.
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Diminishing Returns (Training)
Diminishing Returns (Training)
Fitness improvements slow down as fitness gets better and approaches a natural limit.
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General Adaptation Syndrome (GAS)
General Adaptation Syndrome (GAS)
A three-stage model describing how the body responds to stress, including exercise.
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Alarm stage (GAS)
Alarm stage (GAS)
Initial response to stress; body releases energy, increasing heart rate, blood pressure, and strength.
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Resistance stage (GAS)
Resistance stage (GAS)
The body adapts to the stressor and tries to maintain homeostasis.
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Exhaustion stage (GAS)
Exhaustion stage (GAS)
The body's resources become depleted if stressor persists and the body cannot adapt further.
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Alarm stage (exercise)
Alarm stage (exercise)
The body's initial response to exercise; increased energy, heart rate, blood pressure, and strength; lasting approximately 2-3 weeks
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Cortisol and Epinephrine
Cortisol and Epinephrine
Hormones released in the alarm stage, facilitating the body's response to stress
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Progressive strength gains
Progressive strength gains
Strength improvements that occur over time, with a new exercise introducing fresh muscular/neural activation and motor-unit response facilitating gains.
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Phosphagen System
Phosphagen System
The energy system that uses ATP and creatine phosphate for very short bursts of high-intensity exercise.
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ATP
ATP
Adenosine triphosphate; the primary source of cellular energy.
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Creatine Phosphate (CP)
Creatine Phosphate (CP)
A molecule that quickly replenishes ATP during high-intensity exercise.
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Anaerobic Glycolysis
Anaerobic Glycolysis
Energy system using glucose/glycogen for ATP production without oxygen. Provides energy for activities lasting 1-3 minutes.
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Aerobic Glycolysis
Aerobic Glycolysis
Energy system using fatty acids for ATP production with oxygen, suitable for sustained activity.
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Energy System Interaction
Energy System Interaction
The contribution of each energy system varies based on the intensity and duration of exercise.
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Intensity
Intensity
The level of effort during an activity.
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Duration
Duration
The length of time an activity is performed.
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Agonist Muscle
Agonist Muscle
The muscle primarily responsible for producing a movement.
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Antagonist Muscle
Antagonist Muscle
The muscle working opposite to the agonist, controlling the movement.
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Synergist Muscle
Synergist Muscle
Muscle assisting the agonist in a movement.
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Concentric Contraction
Concentric Contraction
Muscle shortens to produce force.
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Eccentric Contraction
Eccentric Contraction
Muscle lengthens while resisting force.
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General Adaptation Syndrome (GAS)
General Adaptation Syndrome (GAS)
A three-stage model describing how the body responds to stress, including exercise.
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Alarm Phase (GAS)
Alarm Phase (GAS)
Initial response to stress; body releases energy, increasing heart rate, blood pressure, and strength.
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Resistance Phase (GAS)
Resistance Phase (GAS)
Body adapts to stressor; tries to maintain homeostasis.
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Exhaustion Phase (GAS)
Exhaustion Phase (GAS)
Resources depleted if stressor continues; body cannot adapt further.
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Overtraining
Overtraining
Signs and symptoms that arise from excessive training.
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Physical activity
Physical activity
Bodily movements that come from skeletal muscle contraction and increases energy expenditure.
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Physical Fitness Components
Physical Fitness Components
Muscular Fitness, Cardiovascular Endurance, Flexibility, and Body Composition
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Muscular Strength
Muscular Strength
The maximal force a muscle or muscle group can generate.
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Anatomical Position
Anatomical Position
A person standing with head, eyes, and palms facing forward, feet together, toes forward, and arms hanging by the sides.
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Anterior
Anterior
Toward the front of the body.
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Posterior
Posterior
Toward the back of the body.
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Superior
Superior
Toward the head or upper part of the body.
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Inferior
Inferior
Away from the head or toward the lower part of the body.
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Medial
Medial
Toward the midline of the body.
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Lateral
Lateral
Away from the midline of the body.
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Proximal
Proximal
Toward the attached end of a limb.
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Distal
Distal
Away from the attached end of a limb.
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Superficial
Superficial
Closer to the body surface.
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Deep
Deep
Further beneath the body surface.
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Frontal Plane
Frontal Plane
Divides the body into front and back portions.
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Sagittal Plane
Sagittal Plane
Divides the body into left and right portions.
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Transverse Plane
Transverse Plane
Divides the body into top and bottom portions.
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Kinesiology
Kinesiology
The study of human and nonhuman body movements.
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Newton's 1st Law (Inertia)
Newton's 1st Law (Inertia)
A body at rest stays at rest and a body in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
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Newton's 2nd Law (Acceleration)
Newton's 2nd Law (Acceleration)
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
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Newton's 3rd Law (Reaction)
Newton's 3rd Law (Reaction)
For every action, there is an equal and opposite reaction.
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Essentials of Exercise Science
- This is a lesson outline for exercise science.
- Lesson 3 and 4 are covered in the provided documents.
Lesson 3: Flexibility Training
- Factors contributing to flexibility:
- Muscle and connective tissue properties
- Ligaments (47%), Muscles (41%), Tendons (10%), Skin (2%)
- Age, Gender, Joint structure/past injury, Tissue temperature, Circadian variations
- Neurological properties of stretching:
- Stretch response (muscle spindle) & stress-relaxation
- Golgi tendon organ (GTO) response
- Creep and stress relaxation
- Types of stretches:
- Static stretching (active/passive)
- Dynamic stretching
- Ballistic stretching
- Myofascial release
- Proprioceptive neuromuscular facilitation (PNF)
Lesson 3: General Training Principles
- Specificity: Training must be tailored to the desired outcome/goal
- Progression: Systematically increase resistance/duration
- Overload: Exceeding normal loads in order to improve
- Reversibility: Lack of training leads to loss of improvement (regression)
- Diminishing returns: Improvement rate slows as fitness approaches peak performance
Lesson 3: General Adaptation Syndrome (GAS)
- Alarm stage: Initial response to stress/exercise; increased energy, HR, BP.
- Resistance stage: Body adapts to prolonged stress; elevated HR, BP, and muscular adaptation.
- Exhaustion stage: Body's resources are depleted; fatigue, injury, illness
Lesson 3: Overtraining Syndrome
- Symptoms: Decline in performance, change in appetite, weight loss, sleep disturbances, multiple colds.
- Prevention: Periodization training (alternating easy, moderate, hard training days)
Lesson 3: Bioenergetics
- ATP: Adenosine triphosphate (energy currency)
- Energy systems:
- Phosphagen system (0-10 seconds)
- Anaerobic glycolysis (1-3 minutes)
- Aerobic glycolysis (>3 minutes)
Lesson 4: Human Anatomy
- Anatomical Position: Standing erect, forward-facing.
- Anatomical terms: Anterior/posterior, superior/inferior, medial/lateral, proximal/distal, superficial/deep.
- Planes of motion: Frontal, sagittal, transverse
Lesson 4: Kinesiology
- Kinesiology: Study of human & nonhuman movements and mechanical aspects of the body.
- Newton's Laws: Inertia, Acceleration, Reaction.
- Force production (muscle types): Agonist (prime mover), antagonist (opposite action), synergist (assists prime mover)
Lesson 4: Types of Muscular Contractions
- Concentric: Muscle shortens, overcoming resistance
- Eccentric: Muscle lengthens while under tension
- Isometric: Muscle contracts but doesn't change length
Lesson 4: "Joints, Movements, Planes, and Muscles"
- Overview of joints, movements, planes, and muscles
- Discusses various types of joints and their associated movements in each plane of motion (frontal, sagittal, transverse)
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