Flashcards in November 7th Deck (12)
mechanical efficiency can be affected by ...
drag (air or water drag)
the walking efficiency up to certain speeds is linear but once you start to go to fast..
it begins to curve up, so you are better off to start to take bigger strides and start to run
you become more affective if you break out into a run
why is running and walking different from an efficiency stand point
resting component + a horizontal component + a vertical component to find =vo2
if the speeds are low is the energy required to cover a distance similar between walking and running?
what is one thing that changes energy expenditure
weight- to actually lift your body mass it requires energy, it takes more energy to lift a heavy body because they require more work
weight-bearing exercise can help to burn more then non weight bearing exercises
if you want to run faster how would you do this
increase the number of steps each minute
increase the distance between the steps
increase both the length and frequency of strides
why does it require more energy to take very large large large strides
because it requires you to use more energy in the vertical component ie you would have to kind of jump
children are less/more economic runners then adults?
at swimming in cold temperatures you
burn more energy then in the hot temperatures
when you get up to faster speeds swimming then you are heating up your own body by producing energy so
you don't notice the cold water as much; you don't shiver
what helps with buoyancy