Chapter 1. Flashcards
the study of function of tissues organs and systems
Physiology
The x axis is the _________ variable
Independent (controlled)
the Y axis is the _________ Variable
Dependent variable (response) or (outcome)
___________ Variable muddies up interpretation
Examples include:
- humidity
- Temprature
- time
Confounding
Formula for WORK
W= Force xDistance
Formula for POWER:
Power= Work/Time
UNIT: J/S
___________ Any device that is used to measure work:
Ex:
- Bench step
- cycle
- arm
- Treadmill
Ergometer
Bench: given 70kg person on 30 cm step @ 30steps/min for 15 min
Find work in KPM?
Bench: given 70kg person on 30 cm step @ 30steps/min for 15 min:
Work= 70kp X 0.3 m/step X 30steps/min X 15 min
70 kp
0.3M
30 steps
15min
=9450 kpm
Treadmill: Given 70kg person on a 10% grade @ 100m/min for 15min
Find work in KPM:
Treadmill: Given 70kg person on a 10% grade @ 100m/min for 15min
70kp
0.1
100m/min
15m
10500 KPM
Cycle: given 2 kp resistance against flywheel @ 50 rpm (rev/min) for 15 min, flywheel travels 6 m/rev
Find work in KPM
Work = 2 kp X 6 m/rev X 50 rev/min X 15 min = 9000 kpm
How do you convert kpm to J or convert force to N before multiplying.
Once you have work in J, divide by time in seconds to get power (work rate) in Watts. Or, you can calculate work rate initially without calculating work first by doing above but not multiplying by time. This will give you work rate in kpm/min. Then, can convert kpm/min to Watts
Bench: given 70 kg person on 30 cm step @ 30 steps/min for 15 min
Find in KPM/Min
Bench: given 70 kg person on 30 cm step @ 30 steps/min for 15 min
Work rate= 70 kp X 0.3 m/step X 30 steps/min = 630 kpm/min
GIVEN just be understand what they mean
1Kg=1Kp=9.81J
1w=6.12KPM/min
1 j= 1 N.M
1kpm/min= 0.263 W
GIVEN just be understand what they mean
1Kg=1Kp=9.81J
1w=6.12KPM/min
1 j= 1 N.M
1kpm/min= 0.263 W
What does % Grade Mean?
Amount of vertical rise per 100 units of belt travel.
ex. 10% grade means 10m vertal rise for 100m of belt travel.
*So for every 1unit of vertical rise 10 units of horizontal movement.
What is a Kcal?
1 kcal= Amount of heat required to raise the temperature of 1 kg of water by 1 Degree Celsius
1kcal=4186j
What are the differences between
kcal, Calorie, calorie
1kcal=1000calories
________ caloriemtry is the measurement of heath production as an indirect metabolic rate.
Direct Calorimetry
________ Calorimetry is the measurement of oxygen consumptionas an estimate of resting metabolic rate.
Indirect calorimetry
_____=volume of o2 inspired (-) volume of o2 inspired.
VO2
When converting ablsolute Vo2 (L/min) to Relative Vo2 (ml/kg/min) you would do what?
Take the Absolute Vo2 and multiply by 1000 then ÷ by the body weight/mass.
just know that average Kcal consumption for 1L/o<span>2 </span>
is ______
5kcals/ L.o2-1
1 met =_______
In relative VO2
3.5 ml/kg/min
