intro to physiology Flashcards
1
Q
what is an ergometer?
A
- instrument used to measure work output of a person exercising
- person can exercise at precise power outputs whilst physiological measurements are performed
2
Q
what is work?
A
- product of force and the distance through which that force acts
3
Q
what is power?
A
- amount of work performed per unit of time
4
Q
what is net efficiency?
A
- ratio of work output divided by energy expenditure above rest
5
Q
what is VO2 (oxygen consumption)
A
- amount of O2 used by body
6
Q
what is indirect calorimetry
A
- measure of metabolic rate via VO2
7
Q
what is direct calorimetry?
A
- measure of metabolic rate via heat production
8
Q
what is relative VO2
A
- O2 consumed per kg of body mass
9
Q
what is running economy?
A
O2 uptake at specific running speed
10
Q
what is 1 MET (metabolic equivalent)?
A
- a unit of resting metabolic rate
11
Q
how does the alimentary system contribute to exercise?
A
- water and nutrient intake
12
Q
how does the blood system contribute to exercise?
A
- carries gases, nutrients and waste products
13
Q
how does the cardiovascular system contribute to exercise?
A
- pumps bloods through the circulation
14
Q
how does the CNS contribute to exercise?
A
- controls musculoskeletal system, circulation and body temp
15
Q
how does the endocrine system contribute to exercise?
A
- supports circulation control and regulates metabolism