Shared Flashcard Set

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Wellness
Exam 2
17
Fitness
Undergraduate 1
11/05/2012

Additional Fitness Flashcards

 


 

Cards

Term
Excitibility
Definition
respond to chemicals released from nerve cells
Term
contractility
Definition
ability to shorten and generate force
Term
Extensibility
Definition
Ability to be stretched without damaging the tissue
Term
Muscular endurance
Definition
submaximal force (repeatedly),
Term
Agonists
Definition
prime movers; responsible for the movement
Term
Antagonists
Definition
oppose the agonists to prevent overstretching of them
Term
Synergists
Definition
assist the agonists and sometimes fine-tune the direction of movement
Term
Isometric (static)
Definition
tension development with no change in muscle length that results in no movement of body parts
Term
Isotonic (Dynamic)
Definition
): tension development with a change in muscle length that results in movement of a body part
Term
Isokinetic
Definition
Muscle contraction at a fixed velocity
Term
Cardiopulmonary System
Definition
Improvements in VO2max similar to adults
No risk of permanent cardiovascular damage as a result of training
Term
Heat exhaustion
Definition
the decreased cardiovascular function that accompanies dehydration and mild hyperthermia
-profuse sweating, cold skin, flu-like symptoms, dizziness, rapid pulse, shallow breathing, and headaches
Term
Heat Stroke
Definition
when heat stress continues, or is worsened beyond that of heat exhaustion, physiological symptoms progress to CNS dysfunction - disorientation, confusion, psychoses
-no sweating, dry skin, very hot, high temp., bright red skin, unresponsiveness
Term
Effects of altitude
Definition
Lower partial pressure of oxygen leads to shortness of breath
Cold, dry air promotes dehydration
Acute mountain sickness (AMS)
Term
Does living at high altitude improve exercise tolerance?
Definition
Yes, VO2max decrement is not as large
Maximal blood lactate is lower
AMS symptoms are less severe
Air pollution irritates lungs and decreases oxygen delivery to muscles
Term
Osteoperosis
Definition
can positively affect peak bone mass in children and adolescents, maintain or even modestly increase bone
Term
Microtrauma
Definition
An injury that results from chronic repetitive motions that violate the integrity of our joints
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