Unit 1 Quizes Flashcards
(51 cards)
What is exercise?
Structured physical activitty
What is Physiology?
The study of the body organ systems to maintain homiostasis
“The study of the function of cells, tissues, organs, and systems’
Exercise Physiology
Study of how acute and chronic exercise influences the function of cells, tissues, organs, and systems.
Environmental Factors
specific populations
Reductionism
Study of a Singular molecule (like a protein) to better understand
Which of the following is used to measure work output?
Ergometer
Indirect calorimetry is a means of determining energy expenditure and involves the measurement of:
oxygen consumption.
The SI units for work and power are _______ and _______, respectively.
Joules; watts
Power is defined as:
work divided by the amount of time required to perform the work (i.e., work rate).
Work is defined as:
the product of force times distance.
One. MET is defined as a metobolic equivliant to:
Resting VO2
Exercise efficency is greater in subjects who Posses a higher percentage of ___ muscle fiber
Posses a higher percentage of slowe-twitch muscle fiber
NET efficiency ___ as work rate increases
decreases
(Inverse relationship)
The harder you work out, the less energy effeicent you become (Burn more calories)
Compared to a high a highly economical runner, runners that exhbit poor running economy would require:
A higher VO2 at any given runnning speed
(They have to work harder, they burn more calories and intake more oxygen)
A train person has the same VO2 at any given running speed
Higher VO2 =
Higher caloric expediture
The measurement of oxygen consumption during exercise can provide an estimate of metabolic rate. The rationale behind the use of oxygen consumption to estimate metabolic rate thtat
a direct relationship exists between oxygen consumed, energy expenditure, and teh amoiint of heat produced by the body
The term homeostasis is defined as:
the maintenance of a constant internal environment
Exercises physiologists use teh term steady state to denote:
A steady and relativley unchanging level of a physiological varible
(Maintaining)
A series of interconnected componets that serve to maintain a physical or chemical parameter of the body near a constant value uis called:
A biological control system
The gerneral components of a biological control system include the:
Receptor, (Strech reflex)
Control center, (Nervous System)
Effector, (Cause change/movement)
Most control systems of teh body operate via:
Negative feedback
The gain of a biological control system is thought of as
Gain=capablility = percision
Larger gain = more percision in maintaining hoomeostsis
Exercise training can improve homeostsis control via
cellular adiptation
Cellular adiptation to environmental stress (like heat)
acclimation
Hormesis refers to a biologiacl procedure
adapt to low-moderate does of stress to adaptive reponse
