Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

KINS 1100 > chapter 1 > Flashcards

chapter 1 Flashcards

1
Q

what are SI units?

A

system international units

- the system used for all journal publications in exercise and sports medicine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the unit used to measure force?

A

newton (N)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is the unit used to measure work and energy?

A

joule (J)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the unit used to measure power?

A

watts (W)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is the unit used to measure velocity?

A

meters per second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the unit used to measure torque?

A

newton per meter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how do you calculate work?

A

work = force x distance

calculated in kilojoules (kJ)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how much force does 1kg produce?

A

9.81 newtons (N)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is power and how do you calculate it?

A

the amount of work accomplished per unit of time, aka speed

power = work/time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is ergometry?

A

measurement of work output

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is an ergometer?

A

an apparatus to measure specific work (ergometry)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how does a cycle ergometer work?

A
  • a belt is wrapped around the wheel, can be tightened/loosened
  • distance is measured by calculating the revolution of pedals
  • standard distance per revolution: 6m/revolution
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is a percentage grade and how do you measure it?

A

the amount of verticle rise per 100 units of belt travel

% grade = sine of angle x 100

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is an inclinometer?

A

a device that measures the angle sine of the treadmill

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

how do you calculate vertical travel?

A

vertical travel = distance belt travels x % grade

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is direct calorimetry?

A

measuring metabolic rate via heat production

17
Q

how do you measure direct calorimetry?

A
  1. subject is in an enclosed chamber, isolated from the outside environment
  2. the subject’s body temperature raises the overall temperature
  3. estimate energy expenditure: total heat picked up + heat loss
18
Q

what is indirect calorimetry?

A

measuring metabolic rate through oxygen consumption

19
Q

what is open-circuit spirometry?

A
  1. subject wears a nose clip
  2. uses a respiratory valve mask to breathe in air from the room
  3. exhaled gas is collected in a Douglas bag
  4. oxygen and carbon dioxide are chemically analyzed
20
Q

what are METs?

A

metabolic equivalent

- represents resting metabolism to compare activity intenstity

21
Q

what is relative VO2?

A

a measurement of VO2 as a function of body weight

22
Q

what is exercise efficiency?

A

the capacity to convert energy expenditure into work

  • work done : energy put in
23
Q

how do you calculate net efficiency?

A

% net efficiency = (work output/energy expenditure) x 100

24
Q

what are 3 factors that influence energy efficiency?

A
  1. work rate
  2. speed of movement
  3. fiber type
25
Q

how does work rate effect energy efficiency?

A

as work rate increases, efficiency decreases

26
Q

how does speed of movement effect energy efficiency?

A

as we near optimum speed, efficiency increases

27
Q

how does fiber type effect energy efficiency?

A

a high % of slow muscle fibers have a higher efficiency because slow muscle fibers require less ATP

28
Q

what is strength?

A

the max force that a muscle can produce in 1 contraction

29
Q

what is a calorie?

A

a unit of energy

  • the amount of heat required to increase the heat of 1 gram of water by 1 degree
30
Q

how many kcals is 1 pound of fat?

A

3.5kcal

31
Q

1 MET is equivalent to how many ml of oxygen per minute?

A

1 MET = 3.5ml oxygen/minute

oxygen decreases in higher altitude

32
Q

what is the average heart rate at rest?

A

70-90 bpm

33
Q

how does our body react to overheating?

A
  • thermoreceptors (sensory receptors) pick up this stimulus
  • information is sent to the hypothalamus
  • the hypothalamus sends a response to the effectors
  • effectors release sweat to move the hot water to the skin where it is cooler
34
Q

how does our body react to a large amount of glucose in the blood?

A
  • pancreas measures blood levels
  • receptors detect high sugar levels
  • information is sent to the hypothalamus
  • effectors release insulin to absorb excess sugar
35
Q

what is innervation?

A

determines what nerve delivers an impulse to a specific muscle

KINS 1100 (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions