Shared Flashcard Set

Details

TherEx
Dr. Peck's class
202
Physiology
Graduate
06/21/2012

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Cards

Term
There are relatively few therapeutic intervention options for patients T/F?
Definition
False
Term
How do you promote patient independence?
Definition
Through home treatment, self-management exercise programs, and patient-related instructions
Term
When in doubt about choosing an intervention, what is the best option?
Definition
Therapeutic exercise
Term
What is the most important factor in choosing an exercise intervention?
Definition
Function
Term
How many exercises are appropriate to give to a patient in order to maintain adherence to the HEP?
Definition
1-5, any more than that the patient will likely be unable to do all of them and if they cannot do all of them there is a good chance they will not do any of them
Term
If an impairment is not linked to a functional limitation should it be considered in the HEP?
Definition
No, this is part of the clinical decision making process. Prioritization of the impairments that correlate to the identified functional limitations is very important
Term
The focus of any therapeutic exercise plan should be to restore the patient's strength through strength building exercises
Definition
No, restoring strength is important but the focus should be on functional activities that have meaning to the patient such as doing bridging for bed mobility or other activities that include multiple systems including strength
Term
Who are patients?
Definition
Persons with diagnosed impairments or activity limitations
Term
Who are clients?
Definition
Persons who are not necessarily diagnosed with impairments or activity limitations, but seek services for prevention or promotion of health, wellness, and fitness
Term
What is the biopsychosocial model?
Definition
Theoretical framework for understanding PT practice and the classification scheme by which PTs make diagnoses and decisions for intervention
Term
What models led to the ICF model?
Definition
The NAGI model and the International Classification of Impairments, Disabilities, and Handicaps (ICIDH
Term
The steps of the ICIDH model
Definition
Disease > Impairment > Disability > Handicap
Term
The steps of the NAGI scheme
Definition
Active Pathology > Impairment > Functional Limitation > Disability
Term
Why are terms like disability not used?
Definition
Represents the negative aspects of the interaction between the individual with a health condition and that person's environmental and personal factors
Term
Define impairment
Definition
Loss or abnormality at the tissue, organ, or body system level; e.g. muscle weakness or joint swelling
Term
Define secondary impairment
Definition
An impairment that comes about from another preexisting impairment; e.g. joint pain/swelling that causes weakness or loss of ROM
Term
Define activity limitation
Definition
Difficulties an individual may have in executing activities. These limitations are measured from mild to severe; the question you want to ask yourself is what can the patient functionally not do
Term
What are the two parts to the ICF?
Definition
Functioning and Disability: focusing on the body functions and structures followed by the activities and participation. Then there is a focus on the positive and negative aspects of the individuals ability (functioning is the positive aspect and disability is the negative aspect)

Contextual factors is the second part which includes the environmental factors and the personal factors
Term
In the ICF model functioning refers to what?
Definition
What the patient can do
Term
In the ICF model disability refers to what?
Definition
What the patient cannot do (activity limitation and participation restriction)
Term
Name two environmental factors (many possible)
Definition
Any external stimulus that influences the functioning and disability

Facilitators

Barriers that keep patient from
Term
What are personal factors in the ICF model?
Definition
Internal influences on functioning and disability
Term
What are some benefits to therapeutic exercise for the patient?
Definition
Can reduce health care costs by promoting patient independence and self-responsibility
Term
What are the 5 steps of the patient management model?
Definition
1. Examination
2. Evaluation
3. Diagnosis
4. Prognosis
5. Intervention (leading to outcomes)
Term
What is the Examination?
Definition
Process of obtaining a history, performing a relevant systems review, and selecting and administering specific tests and measurements to obtain data - used to generate a diagnosis
Term
What is included in the Examination?
Definition
Occupation, history of present condition and medications, functional status and level of activity, medications, and family history
Term
What is the Evaluation?
Definition
The dynamic process in which the physical therapist makes judgements based on data gathered during the examination - interpretation of the data
Term
What is the Evaluation used for?
Definition
To determine the stability of the condition, presence of preexisting conditions, progression and stage of the S/S, and relationships among involved systems and sites
Term
What is the Diagnosis?
Definition
The process and end result of information obtained in the examination and evaluation
Term
Cluster definition (diagnosis)
Definition
A set of observations or data that frequently occur as a group or single patient - LBP is an example
Term
Syndrome definition (diagnosis)
Definition
An aggregate of signs and symptoms that characterize a given disease or condition
Term
Diagnosis definition (diagnosis)
Definition
A label encompassing a cluster of signs and symptoms commonly associated with a disorder, syndrome, or category of impairment, functional limitation, or disability
Term
What is the Prognosis?
Definition
The process of determining the level of optimal improvement that may be obtained from intervention, and the amount of time required to reach that level
Term
Plan of Care definition
Definition
Specific interventions to be used and the proposed duration and frequency of the interventions that are required to reach the anticipated goals and outcomes
Term
Prognosis and Plan of Care are based on what?
Definition
Patient's safety, needs, and goals
The results of the examination, evaluation, and diagnostic processes

This gets easier the more patients you see because you see similar problems repeatedly
Term
What is the Intervention?
Definition
The purposeful and skilled interaction of the PT with the pt using various methods and techniques to produce changes in the patient's condition consistent with the evaluation, diagnosis, and prognosis
Term
When is the outcome successful?
Definition
The activity and participation are improved or at least maintained, the activity limitation or participation restriction are minimized or alleviated completely, or when the patient is satisfied

Most importantly if the patient feels their goals are accomplished then they are done. It's their goals, not yours that are the most important
Term
What are the three axes of the Therapeutic Exercise Intervention Model?
Definition
1. Elements of the movement system as they relate to the purpose of each activity or technique
2. The specific activity or technique chosen
3. The specific dosage
Term
What are the elements of the Movement System?
Definition
Support, Base, Modulator, Biomechanical, Cognitive or Affective
Term
What does Support refer to?
Definition
Functional status of the cardiac, pulmonary and metabolic systems
Term
What does Base refer to?
Definition
Functional status of the neuromusculoskeletal systems
Term
What does Modulator refer to?
Definition
Physiologic status of the neuromuscular system
Term
What does Biomechanical refer to?
Definition
Functional status of static and dynamic kinetics and kinematics
Term
What does Cognitive or Affective refer to?
Definition
Functional status of psychological systems as it relates to movement
Term
What are the Stages of Movement Control?
Definition
Mobility, Stability, Controlled Mobility, and Skill
Term
What is Mobility?
Definition
Functional range through which to move and the ability to sustain active movement through the range
Term
What is Stability?
Definition
Ability to provide stable foundation from which to move
Term
What is Controlled Mobility?
Definition
Ability to move within joints and between limbs following the optimal path of instant center of rotation
Term
What is Skill?
Definition
Ability to maintain consistency in performing functional tasks with economy of effort - movement with efficient use of energy
Term
What is Posture?
Definition
Body position referring to base of support
Term
What is Mode?
Definition
Method of performing activity - think modality
Term
What is Movement?
Definition
Quality of performance?
Term
Examples of Physical Agents
Definition
Ice, heat, sound
Term
Examples of Mechanical Modalities
Definition
Traction, compression devices, and tilt tables
Term
Examples of Electrotherapy
Definition
NMES and TENS
Term
What does patient education include?
Definition
Information on current condition, diagnosis, prognosis, and plan of care

Health and wellness issues as appropriate

Risk factors for pathology, impairments, activity limitations, and participation restrictions
Term
Patient learning is categorized as cognitive, affective, and psychomotor. T/F?
Definition
True
Term
What is included in the cognitive domain?
Definition
Information and facts about the patient's condition and the rehabilitation program
Term
What is included in the affective domain?
Definition
This domain addresses the patient's attitude and motivation
Term
What is included in the psychomotor domain?
Definition
Learning proper motor programs and exercise performance
Term
The PT does not need to help the patient understand which signs and symptoms predict an exacerbation
Definition
False, this is a vital part of patient safety
Term
Personalities, values, teaching, and learning styles do not affect adherence and outcomes. T/F?
Definition
False
Term
Clarification on how progress is defined and reasonable expectations regarding progress can improve patient adherence and satisfaction
Definition
True
Term
Ther Ex requires initiative, motivation, and _______ in order to achieve success
Definition
Self-adherence
Term
What are the 5 stages of the Transtheoretical Model of Behavioral Change?
Definition
1. Pre-contemplation
2. Contemplation
3. Preparation
4. Action
5. Maintenance
Term
What is going on during the stage of Pre-contemplation?
Definition
A lack of interest in exercising
Term
What is going on during the stage of Contemplation?
Definition
The client is thinking about exercising but has not necessarily started yet
Term
What is going on during the stage of Preparation?
Definition
The client is doing some exercise but not meeting the recommended levels
Term
What is going on during the stage of Action?
Definition
The client is meeting recommendations, but not for 6 months yet
Term
What is going on during the stage of Maintenance?
Definition
The client has kept up the action for 6 months
Term
If you tell a patient what to do, then the HEP will work out just fine. T/F?
Definition
False, you have to do more than just tell the patient what to do, you must educate them on how to change otherwise it is unlikely that their behavior will change
Term
Rapport is important for adherence. T/F?
Definition
True, it is very important
Term
The first thing a PT should do when trying to improve adherence is listen to the patient and identify the state of readiness for change. T/F?
Definition
True
Term
A patient's treatment should be separate from their functional goals. T/F?
Definition
False, the two should be linked in order to give the patient a reason for doing the exercises
Term
A radical change in a patient's lifestyle is the best way to get them to adhere to the HEP. T/F?
Definition
False, the fewest lifestyle changes the better. The HEP should blend into the patient's daily routine.
Term
What must a clinician be conscious of when giving instructions?
Definition
Cultural barriers
Clarity of instruction
A logical sequence of exercises so it is easier to understand and perform them
Term
After giving instructions to a patient on their HEP what should the PT do?
Definition
Have the patient perform the exercises under supervision and encourage the patient to take notes
Term
What are the factors to consider when coming up with a Home Exercise Prescription?
Definition
1. Stage of tissue healing
2. Tissue irritability and symptom stability
3. Pt's daily activities (what do they do?)
4. Pt's time and willingness to participate
5. Frequency between PT visits
Term
At the early stages of rehab, the patient does not visit the PT very often because of their surgery. T/F?
Definition
False, the pt sees the PT more frequently in order to modify the exercise program
Term
As a PT you are constantly assessing pt responses. T/F?
Definition
True
Term
Determining frequency of PT visits is a clinical decision skill made by the PT. T/F?
Definition
True, more frequent visits allows for greater supervision and less frequent visits means the HEP is less likely to overwork the patient
Term
What does the FITT principle stand for?
Definition
F=Frequency of exercise
I=Intensity
T=Type (mode of exercise)
T=Time (duration)
Term
Intensity can be set high or low, both will benefit the patient. T/F?
Definition
False, if the intensity is too low, there will be no or little adaptive growth, and a possible loss of training effect
Term
What is the range of the RPE (Rate of Perceived Exertion) scale and also the ideal level on that scale?
Definition
Range is from 6 (very, very light) to 20 (Very, very hard), ideally the patient is between 12 and 16 so the perceived level of intensity is somewhat hard to hard
Term
Describe the MET system
Definition
1 MET = resting metabolic rate (quiet sitting)

Values range from .9-18

Light activity is <3 METs
Moderate is 3-6 METs
Vigorous is >6 METs
Term
What is the "talk test"?
Definition
While walking, if the patient cannot talk because they are so winded then they are working too hard and the intensity needs to be brought down
Term
What is retrogression?
Definition
over-training that prevents "growth"

*Adequate rest and recovery are critical for positive adaptations*
Term
What affects the healing of soft tissues?
Definition
Age, lifestyle, and systemic factors
Term
What are the treatment goals during the Inflammation Phase of Tissue Healing?
Definition
Decrease pain and inflammation while also maintaining mobility and strength of adjacent joints and soft tissue if possible
Term
How long does the inflammation phase last?
Definition
3-5 days
Term
When does Chronic Inflammation occur?
Definition
When the acute response does not eliminate injuring agent

Overuse or overload with cumulative repetitive microtrauma
Term
How long does the proliferative phase occur?
Definition
Up to 8 weeks for the new collagen forming (primarily type III)
Term
What are the treatment goals during proliferative phase of tissue healing?
Definition
Light loading; sub-max isometrics

AAROM and AROM exercises and joint/scar mobilization
Term
An increase in tensile strength and a decrease in the number of fibroblasts signals the beginning of what?
Definition
The maturation-remodeling phase
Term
Persistent inflammation response causes extended fibroplasia and fibrogenesis. T/F?
Definition
True, this is an abnormal response
Term
What occurs during the maturation phase?
Definition
Realignment of collagen fibers along lines of tensile force

Increase in tensile strength of scar matrix

Deposition of type I collagen

This may take months to complete
Term
What is Wolff's law?
Definition
Bone and soft tissue respond to the physical demands placed on them causing them to remodel along lines of tensile force
Term
Normal loading is a treatment goal during the remodeling phase. T/F?
Definition
True
Term
Name 5 factors that impede healing
Definition
Co-morbidities
Smoking history
Corticosteroids
Poor vascular supply
Infection
Term
By limiting the amount of swelling, the rehabilitation time will go unchanged. T/F?
Definition
False, there will be a significant decrease in rehabilitation time when swelling is limited
Term
What does PRICE stand for?
Definition
Protection
Restricted Activity
Ice
Compression
Elevation
Term
What is considered optimal loading?
Definition
Loads that aid the healing process and do not under or overload the tissues
Term
What are the signs of overload?
Definition
Pain that does not resolve
Increased swelling, warmth, or redness
Pain that is increased over the previous session or comes on earlier in the exercise session
Term
What is SAID stand for?
Definition
Specific Adaptations to Imposed Demands (SAID) - includes quantity and type of activity
Term
What is a sprain?
Definition
Acute injury to a ligament or joint capsule without dislocation
Term
Describe a Grade I sprain
Definition
Mild, ligament is stretched, no discontinuity
Term
Describe a Grade II sprain
Definition
Moderate, some fibers stretched/torn (25-75%) some joint laxity, swelling, bruising
Term
Describe a Grade III sprain
Definition
Severe, complete ligament disruption with resultant laxity, swelling and bruising - pain is often less than what is experienced with a grade II sprain because of the damage to the nerves in a Grade III sprain
Term
What are the therapeutic exercise goals for a sprain?
Definition
Decrease pain/swelling with proper exercise

Exercise tissues around the joint

Joint protection to allow the ligament or capsule to heal

Maintain cardiovascular system
Term
What is a strain?
Definition
An acute injury to the muscle or tendon from an abrupt or excessive muscle contraction
Term
What are the strain classifications?
Definition
Mild, moderate, severe
Term
What is the difference between Tendonitis and Tendonosis?
Definition
Tendonitis: inflammatory
Tendonosis: noninflammatory
Term
What are the two types of articular cartilage injuries?
Definition
Mechanical - from years of abuse to joints

Nonmechanical - infection, inflammatory conditions, prolonged joint immobilization - articular cartilage has a poor healing response so early mobilization is necessary in order to get nourishment to the joint
Term
What is a Contusion?
Definition
Results from a blow and can occur in any area of the body

Blood vessels below skin become damaged

If untreated, may progress to myositis ossifications
Term
What is the treatment for a contusion?
Definition
Simple contusions resolve in a timely manner

Use ice to control swelling and local inflammation

ROM must be restored as quickly as possible
Term
What is an open fracture?
Definition
The fracture breaks the skins surface
Term
What is a closed fracture?
Definition
The fracture does not break the skins surface
Term
What is a nondisplaced fracture?
Definition
All sides of fracture remain in anatomic alignment
Term
What is a displaced fracture?
Definition
The ends of the bones are not in anatomic alignment
Term
How long does it take for bone to heal?
Definition
6-8 weeks minimum for stability
Term
What therapeutic exercise can be done for fractures?
Definition
Gentle joint mobs/stretching, sub-max isometrics, restore ROM, strength, balance
Term
What is/Where do stress fractures occur?
Definition
Overuse injury/Common sites are at the metatarsal bones, tibia, and spine (all weight bearing bones; seen in athletes and the elderly
Term
What is the treatment for stress fractures?
Definition
Must decrease load to allow healing
May require immobilization if severe
Term
When are clinical protocols used?
Definition
Post-operation
Term
Why were protocols developed?
Definition
so all medical professionals working with a patient would be on the same page
Term
Clinical protocols eliminate the need for clinical reasoning. T/F?
Definition
False
Term
What are the vital signs for children?
Definition
HR: 80-120 bbp
BP: 100-120/40-60
RR: Faster than 30-50
Term
How can a child with lower cardiac output than an adult have such high VO2 with less blood being pumped into the periphery?
Definition
higher amount of oxidative enzymes than adults
Term
How many steps a day should girls, boys, and adults take a day as part of an aerobic prescription?
Definition
Girls 6-17: at least 11,000 steps a day
Boys 6-17: at least 13,000 steps a day
Adults 18 or older: at least 8,500 steps a day
Term
Training 2x/week is sufficient for strength gains in children. T/F?
Definition
True, average strength gains are between 13-30%
Term
Resistance training for children results in little change in muscle size but the strength gains come from what?
Definition
It is a result of neural adaptation
Term
There are more strength gains for children when they do few reps and high resistance exercises. T/F?
Definition
False, the opposite is true
Term
What are internal factors that contribute to low fitness in children?
Definition
Self-esteem/depression
Perceived competence
Beliefs about benefits of exercise
Enjoyment/activity preferences
Term
What are some external factors that act as barriers to fitness in children?
Definition
Ability to access community resources
Safety in and around home
Family's belief about benefits of exercise
Nutrition amount and type
Amount of tv time
Family's exercise frequency
Term
Hydrostatic pressure can be used to decrease edema of the affected limb. T/F?
Definition
True, helps with venous return the deeper the water
Term
What is specific gravity?
Definition
the ratio of the density of a substance compared to the density of water
Term
The density of the average body with lungs inflated is what?
Definition
.96g/cm3; therefore since the density is <1, the object floats
Term
Archimedes' principle is what?
Definition
The upward thrust placed on an object is equal to the amount of volume of liquid displaced

-umbilicus: 50%
-xiphoid: 75%
-C7: 90%
Term
Buoyancy allows for therapeutic intervention when weight bearing is indicated. T/F?
Definition
False, contraindicated
Term
What is a buoyancy assisted movement in water?
Definition
Gleno-humeral flexion
Term
What is a buoyancy resisted movement in water?
Definition
Gleno-humeral extension
Term
What is a buoyancy supported movement in water?
Definition
Gleno-humeral horizontal ab/adduction
Term
Bernoulli's principle is what?
Definition
the idea that Eddy currents are created as an object creates turbulence in water absorbing energy of an object, creating resistance by actually pulling the object backwards - drag
Term
Increasing speed and viscosity of fluid also increases Eddy currents. T/F?
Definition
True
Term
Explain why patients look shorter underwater
Definition
When light passes from a lesser to a greater density medium, it bends away from the normal
Term
Where is the center of buoyancy?
Definition
mid-chest
Term
What are some relative precautions to water exercise?
Definition
fear of water, chemical allergy, pregnancy, high blood pressure, diabetes
Term
What are some absolute contraindications?
Definition
Fever, infections of an open wound, incontinence, neurological disorders
Term
What is the purpose of Bad Ragaz?
Definition
to facilitate and strengthen movement patterns in a number of planes of movement which mimic normal movement patterns - known as the ring method and patient is in supine position when this is done
Term
What is the purpose of Halliwick method?
Definition
To teach balance and control in the pool. Originally used to teach people with disabilities how to swim (pushes wheelchairs into pool)

Uses this position sequence: standing-kneeling-sitting-rolling-crawling
Term
What is the purpose of Watsu?
Definition
To promote relaxation and decrease mm tone, used to treat chronic pain and neurological dysfunction
Term
What is buoyant equipment used for?
Definition
to support a limb or the body, decrease compression or impact
Term
What is resistive equipment used for?
Definition
to increase body or limb's surface area while moving through water
Term
The most frequent diagnosis seen in the pool is what?
Definition
Low back pain
Term
Warm water helps with what?
Definition
helps decrease spasticity and general muscular relaxation
Term
Cold water helps with what?
Definition
helps to increase muscular tension with most patient populations
Term
What is the "Gold Standard" of Body Comp Assessment?
Definition
Hydrostatic weighing or underwater weighing
Term
Where does the +/- 1.5% error come from in the underwater weighing?
Definition
Not blowing all air out of lungs; swim suit malfunction (air trapped in swim suit)
Term
What does the Bod Pod do?
Definition
Measures the air displacement compared to the water displacement (+/- 3% error)
Term
What are the advantages/disadvantages of the Bod Pod?
Definition
Advantages: Do not have to get wet, not difficult to operate, measurement time is short

Disadvantage: Expensive ($30,000-$40,000)
Term
What does the skinfold-thickness test measure?
Definition
Subcutaneous fat
Term
Advantages/Disadvantages of skinfold-thickness testing
Definition
Advantages: Easy to use with practice, requires little time, noninvasive, inexpensive

Disadvantages: User error, focuses on subcutaneous fat only, not the most ideal for those very obese or very lean
Term
Bioelectric Impedance testing relies on the fact that fat-free mass or fat mass is more hydrated?
Definition
Fat-free mass and thus electrical current passes through easier
Term
What is the Body Mass Index?
Definition
The ratio between weight and height
(wt in lbs x 703)/(height in inches)^2
Term
Waist to Hip Ratio is measured where?
Definition
ACSM=narrowest point above umbilicus and below last rib

Hip = widest area around the buttocks and hips
Term
What are some effects of immobility?
Definition
Adhesions/stiffness
Pressure ulcers
Deep vein thrombi
Pulmonary emboli
Pneumonia
Osteoporosis
Muscle wasting
Depression
Term
What is hypomobility?
Definition
Decreased mobility or lack of normal mobility
Term
What is a contracture?
Definition
Condition of fixed high resistance to passive stretch of tissue resulting from fibrosis or shortening of the soft tissues around a joint or of the muscles
Term
Compare Instability and Hypermobility
Definition
Instability is the excessive range of osteokinematic or arthrokinematic movement for which there is little protective muscular control

Hypermobility is the excessive joint mobility, laxity, or length of a tissue (can lead to instability but is not equal to it)
Term
How does immobilization affect articular cartilage differently than other tissues?
Definition
There is increased water content
Term
When is stretching contraindicated?
Definition
in acute inflammation and tissue infection cases

Caution when patients have had a recent fractures, osteoporosis, or the elderly
Term
How long are stretches held?
Definition
30-60 seconds

Patient compliance of 10-15 seconds
Term
A muscle that is stretched quickly will stimulate what kind of fibers?
Definition
Ia (spindle) fibers - this will contract the muscle being stretched (counterproductive)
Term
If a Ib (GTO) is stimulated then what happens?
Definition
The agonist will relax
Term
What are the 4 types of stretches?
Definition
1. Static - muscles held at a certain length
2. Ballistic - quick movements (oscillations)
3. PNF
4. Dynamic - actively moving a limb through ROM to impose a stretch
Term
What are some adjunctive agents that help with stretching?
Definition
Superficial heat - hot packs, paraffin, fluidotherapy, hot bath/whirlpool)

Deep heat modalities - 39 degrees C or 103 degrees F

Need to stretch within 5 min
Term
What can cause hypermobility?
Definition
Traumatic injury, genetic predisposition, excessive tissue length
Term
What causes muscle weakness?
Definition
Muscle strain, post surgical, neurologic pathology, orthopedic injury of any kind, de-conditioning, lack of training
Term
Sedentary men and women and young children possess 45%-55% of what type of fiber?
Definition
slow-twitch
Term
Describe type I fibers
Definition
Slow oxidative, red, increased endurance, and decreased force

Rely on aerobic respiration for ATP production, high capillary density, loaded with mitochondria, Dominant in postural muscles
Term
Describe type IIa fibers
Definition
intermediate, fast oxidative glycolytic, fast fatigue resistant
Term
Describe type IIb fibers
Definition
fast glycolytic, increased force, decreased endurance

Rely on glycolysis for ATP production, high glycogen content and low capillary density, few mitochondria, Dominate in muscles used for rapid movement (eye muscles)
Term
Fast motor units have the highest activation threshold, therefore they atrophy last from disuse or denervation. T/F?
Definition
False
Term
With chronic resistance exercise what do IIa fibers turn into?
Definition
IIb (fast twitch)
Term
With chronic aerobic exercise what do IIa fibers turn into?
Definition
I (slow twitch
Term
Compare Parallel (fusiform) and Pennate muscle types
Definition
Parallel - longer muscles with more sarcomeres in series - greater potential for fast contraction (hamstrings)

Pennate - large cross-sectional area so greater tension/force production - more sarcomeres in parallel (quads, gastrocs)
Term
A single neuron is connected to a specific number of myofibers and is called what?
Definition
motor unit - also contains either Type I or Type II fibers, never both
Term
Motor Recruitment "Size Principle" states what?
Definition
Slow-twitch fibers are activated first because of their small diameter, fast-twitch are activated last because of their last diameter
Term
The "Size Principle" is reversed when...
Definition
Painful stimulus is encountered, necessitating rapid movement, during powerful movements such as sprinting, or during NMES
Term
What is a twitch?
Definition
a single motor unit contraction/relaxation event
Term
What is twitch summation?
Definition
Frequency of action potentials overlapping resulting in a stronger net contraction
Term
Define tetany
Definition
Frequency of motor unit discharge increases until contractions fuse

Incomplete tetany - series of partially fused skeletal muscle twitches

Complete tetany - completely fused skeletal muscle twitches - normal skeletal muscle contraction
Term
What are the 3 types of contractions?
Definition
Isometric "constant length"

Isotonic "constant tension"

Isokinetic "constant speed"
Term
What is hypertrophy?
Definition
Increase in fiber size
Term
What is hyperplasia?
Definition
Increase in fiber number (animal studies only)
Term
Describe the DAPRE Protocol
Definition
Based on 6 RM
1st Set=10 reps at 50% 6RM
2nd Set=6 reps at 75% 6RM
3rd Set=6 RM to fatigue
Term
At what intensity is there the most rapid strength gains?
Definition
80%-100% - increased risk of injury though

Minimum intensity needed is 60%-70% of 1RM
Term
What is volume?
Definition
Total number of repetitions x intensity performed over a specified period of time
3 sets of 10 reps x 30lbs = 900lbs
Term
How much rest is needed for a healthy adult between sets (all types of workouts)?
Definition
Power and strength 2-5 minutes
Muscle hypertrophy 30-90 seconds
Muscle endurance <30 seconds
Term
Definition of Periodization and purpose of it
Definition
Def: altering the variables of exercise including mode, order, frequency, intensity, and volume

Purpose: prevent adaptation, stimulate new growth or performance, prevent physical and mental burnout, P90x
Term
Thera-band fatigues at what rate?
Definition
Thera-band has 5%-12% decrease in force after 500 cycles of elongating 100% of length
Term
There is a 20%-30% increase in force production between colors of thera-band. T/F?
Definition
True
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