Lab 1: Introduction Flashcards
what is work?
the transfer of energy
what kind of work is involved with ATP biosynthesis?
chemical work
what kind of work is involved with active transport?
cellular work
what kind of work is involved with muscular contrations?
mechanical work
what is the equation for mechanical work
work = force x distance
SI unit for work
J (Nm), kgm or kpm
what does a kgm represent?
force exhibited by 1 kg multiplied by one meter
what is energy?
the capacity to do work
SI unit for energy
J (or calories)
what is power?
rate of work done (power = work/time)
SI unit for power
watt (W), kgm/min or kpm/min
the rate of transforming metabolic energy to physical performance is also known as
power
absolute vs. relative physiological and performance data
absolute physiological and performance data: 80 kg, 10 m, 300 W, 1.0 L/min O2 consumption
relative physiological performance data: 20 mL/ kg*min relate rate of oxygen consumption
absolute vs. relative exercise intensity
absolute exercise intensity: 100 W, 10 mph, exercise at absolute rate of O2 consumption of 1.0 L/min
relative exercise intensity: % peak power output, % of peak running speed, 1 L/min expressed as percent of individual’s max O2 uptake
what is a graded exercise test?
the work rate changes during the test and is often the independent variable
