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this is mission control houston so it's

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a it's a very well-known fact that

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exercise down here on earth can uh go a

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long way in making you more healthy and

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just feeling better day to day today

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though we're going to learn a little bit

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more about how big of a difference that

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can mean for astronauts up in space so

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right now why don't we head out to the

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payload operations integration center at

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the marshall space flight center where

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laurie megs is there to tell us more

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lori

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astronauts exercise two hours daily to

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counter muscle and bone loss well a

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study that was on the international

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space station previously called

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treadmill kinematics has gleaned new

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information about exercising on the iss

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this is the first time that we've been

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able to actually do an in-depth

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evaluation of exercise running styles on

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on the treadmill up in space station

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primarily because the second generation

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treadmill allows us to capture ground

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reaction forces the astronauts have been

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exercising on treadmills since the

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beginning of iss but the earlier

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treadmill which was called tevus only

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went up to seven miles an hour and

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didn't capture any of these ground

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reaction forces so the new treadmill

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that's been in service now for a couple

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of years allows us to capture the ground

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reaction forces and this is really

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important because the ground reaction

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force is the basically the force between

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the foot and the treadmill belt when

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someone's running and and what this does

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is it quantifies the amount of

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mechanical load that the astronaut has

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during exercise which is bottom line is

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it tells how effective the exercise is

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for protecting bone and muscle

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in general you want higher ground

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reaction forces

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for on earth a lot of times we want to

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reduce the ground reaction force because

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they get too high we start to get stress

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fractures and those sort of things but

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up in space we want to maximize these

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because these are the only forces that

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the astronauts

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have applied to their body throughout

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the entire day is during their exercise

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so we wanted to look and see how the

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ground reaction forces were different

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during space flight than on the ground

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because during space flight you can't

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run on a treadmill like you would

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underground if you did you would just

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keep bumping your head up into the

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ceiling of the iss so the astronauts

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wear a harness and they wear a bungee

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system that pulls them back down

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and this bungee loading causes you to

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have to change the way you run

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we hadn't had any data that allowed us

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to show specifically how there were

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changes we just knew there probably were

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so this was the first activity that we

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did a formal evaluation of how people

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run and compared running styles in

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normal gravity to running styles up on

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the space station we learned a lot of

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really cool things

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first of all from an exercise

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perspective

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we found out that running fast is really

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really important the faster you run the

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greater the forces between the foot and

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the ground from a

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brain perspective and this is where

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people who study motor control and how

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the brain works and maybe people who are

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interested in studying how the brain

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might change due to injury or due to

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aging or these sort of things

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what this means is that

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gravity is not necessary for someone to

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run the same way that they would run

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on the ground so

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the data tell us that when it comes to

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running people can pretty much do this

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automatically even though that input is

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different from on the ground and

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there hasn't been any other studies that

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have been able to study a real

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large-scale multi-joint movement like

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running where you take away gravity to

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see what the effects are so this is one

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of the first that's i've been able to do

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that it was kind of a serendipitous

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finding our purpose was to understand

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exercise but we also found out a little

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bit about how the body controls running

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and speaking of exercise we know that it

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is good for the astronauts but it's also

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good for us here on earth we're getting

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ready for an event here at the marshall

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space flight center that has really

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close ties to the iss it's called race

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in the station and joining me now is the

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race director kent criswell and can't

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tell us it's a cool name so tell me what

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race in the station is we'll race the

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station's actually a duathlon and the

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goal is to finish the course before the

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space station orbits the earth which is

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91 minutes 12 seconds

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so

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your goal is to run bike run

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and that's the course run pi kilometers

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bike e to the pi power kilometers which

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is 23 kilometers and run pi kilometers

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again he totally lost me

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well e is the logarithmic constant 2.71

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and pi to the pi power so it's about

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1.95 miles

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uh 14.3 mile bike and 1.95 mile run

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again yeah we're seeing some of the

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video from last year it's been been very

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successful how many years have we done

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this now this is the third year so we

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started in 2012

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had about

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180 participants

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last year we added a youth event

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we call it an anti-duathlon because it's

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a bike run bike instead of a run bike

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run

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so the kids can bike a little more than

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run

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and so we had about 200 last year and

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this year we're on track to even beat

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last year's participation why do we do

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this

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so the goal of the race is actually to

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raise money for scholarships marshall

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association

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is a is a group of martial employees and

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redstone employees and other community

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people that have access to the arsenal

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and

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we raise money also

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turned it more into an outreach as well

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to show the amazing things we do here at

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redstone not just the nasa things with

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the space station eclipse

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sls

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mighty eagle but also the army

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ties we have with the patriot missile

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with uavs

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also decatur bringing in ula who do the

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atlas

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5 and the delta iv and they're bringing

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some of their models so really try to

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treat this as an outreach to the

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community because half the participants

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don't even have access to the arsenal

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right so i'll work their access they get

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in and they see amazing things we do and

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don't get to normally see it's all about

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getting healthy and raising money and

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wow

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looks like a beautiful day there you

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have this when late september so it'll

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be cooler then and a nice run and bike

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day right september 27th the last

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saturday of the fiscal year 8 30 start

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we race and you can register up till the

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23rd if you don't have access

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and the 25th if you do have access to

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the arsenal

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all right i better get right on that

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i'll give it a try there you go i may

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not get far i may not cross that finish

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line but good luck to you it's a great

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idea and we help other centers get

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involved too right nobody else does this

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no one does it johnson's talked about it

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so all right there's a challenge

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well that'll do it for us from the

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payload operations integration center

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here in huntsville now back to you at

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mission control in houston

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thank you to lori and all the folks out