WEBVTT

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MANY STROKE VICTIMS HAVE
DIFFICULTY WALKING DUE TO AN

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UNEVEN GAIT.
PHYSICAL THERAPISTS EMPLOY

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VARIOUS TECHNIQUES THAT REQUIRE
EXPENSIVE AND CUMBERSOME

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EQUIPMENT.
A MECHANICAL ENGINEER WITH A

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PASSION FOR HELPING PEOPLE AND A
DEDICATED PHYSICAL THERAPIST

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HAVE TEAMED UP TO DEVELOP A
DEVICE THAT IS MUCH EASIER TO

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USE.
IT IS THE GAIT-ENHANCING MOBILE

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SHOE, OR GEMS.
>> THIS IS THE COMPUTER-ASSISTED

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REHABILITATION ENVIRONMENT, OR
CAREN.

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IT'S HOUSED AT THE UNIVERSITY OF
SOUTH FLORIDA WITH A PRICE TAG

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OF OVER A MILLION DOLLARS.
ONLY A HANDFUL OF UNIVERSITIES

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UTILIZE THEM FOR RESEARCH.
>> IT'S BASICALLY A SPLIT-BELT

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TREADMILL SO THE TWO TREADS CAN
MOVE AT DIFFERENT SPEEDS,

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MOUNTED ON A SIX DEGREE OF
FREEDOM BASE, SO WE CAN ROTATE

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IT, TWIST IT, MOVE IT UP AND
DOWN AND ALL AROUND.

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IT HAS GOT A 180 DEGREE SCREEN
SO YOU CAN PUT VIRTUAL REALITY

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ENVIRONMENTS IN FRONT OF YOU.
IT HAS TEN CAMERAS THAT TRACK

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MARKERS THAT WE CAN PLACE IN
VARIOUS PLACES ON THE BODY.

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WE USE IT TO UNDERSTAND HOW
PEOPLE CAN WALK AND HOW WE CAN

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CHANGE THEIR GAIT PATTERNS.
>> DR. KYLE REED IS A MECHANICAL

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ENGINEER WITH A PASSION TO HELP
PEOPLE WHO NEED PHYSICAL

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THERAPY.
HE DECIDED TO CREATE A NEW

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DEVICE THAT WOULD BE LESS
EXPENSIVE AND MORE ACCESSIBLE TO

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PATIENTS WHO HAVE DIFFICULTY
WALKING.

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>> I HAD SEEN A SPLIT-BELT
TREADMILL, AND THAT WAS THE

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INSPIRATION FOR THE SHOE.
THE POINT OF THE SHOE IS THAT IT

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LETS PEOPLE TRAIN IN THE REAL
WORLD WHERE THEY ARE ACTUALLY

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GOING TO BE ACTIVE IN DOING THE
MOTIONS THAT THEY ARE GOING TO

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BE WALKING.
>> THE SHOE HE'S REFERRING TO IS

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THE GAIT ENHANCING MOBILE SHOE,
OR GEMS.

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DR. KYLE TEAMED UP WITH PHYSICAL
THERAPIST RESEARCHER HUN KIM AT

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USF SCHOOL OF PHYSICAL THERAPY
AND REHABILITATION SCIENCES.

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THE GOAL -- TO DEVELOP THIS NEW
DEVICE FOR STROKE SURVIVORS.

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>> INDIVIDUAL WITH STROKE, THEY
TEND TO PUT MORE WEIGHT ON THEIR

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GOOD SIDE.
THEN IF YOU DON'T USE THEIR

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AFFECTED SIDE, THEN YOU'RE GOING
TO LOSE IT.

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>> THIS GEM SHOE IS SEVEN YEARS
IN DEVELOPMENT.

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AFTER GOING THROUGH SEVERAL
ITERATIONS, THEY CAME UP WITH A

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DEVICE READY FOR STUDY.
THEY ARE NOW IN THE MIDDLE OF

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TESTING THE DEVICE ON STROKE
SURVIVORS.

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DIANE IS THE FOURTH PATIENT TO
BE TESTED.

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ALTHOUGH HER STROKE OCCURRED
SEVEN YEARS AGO AND CAUSED

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EXTENSIVE DAMAGE, SHE WAS
DETERMINED TO JOIN THE STUDY.

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>> IN THE BEGINNING, I WAS KIND
OF SCARED, BUT I GOT USED TO THE

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SHOE, SO -- AND I THINK I DID
PRETTY GOOD.

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AS I'VE BEEN USING IT, I NOTICED
THERE WERE SOME CHANGES AT HOME.

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I'M ABLE TO WALK FASTER.
AND MY KNEE MOVES AND MY TOES,

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I'VE NOTICED THEY ARE STARTING
TO MOVE.

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AND THOSE ARE A COUPLE OF THE
THINGS THAT DIDN'T HAPPEN

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BEFORE.
>> DR. KIM HAS DIANE TAKE STEPS

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ALONG A GAIT-MEASURING WALKWAY
THAT HAS SENSORS TO MEASURE HER

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WALKING PATTERN.
>> WE ARE COMPARING THEIR

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SPATIAL-TEMPORAL VARIABLE.
SPATIAL MEANS TRIED LENGTH AND

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HOW EACH TOE DEVIATED FROM THE
LINEAR LINE.

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AND TEMPORAL VARIABLE MEANS HOW
LONG THEY TAKE A STEP.

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WE PUT THE SHOE ON THE HEALTHY
SIDE, WHICH SEEMS A LITTLE

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COUNTERINTUITIVE, BUT IT'S
ACTUALLY WORKING ON THE

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IMPAIRED SIDE.
IN SOME SENSE, IT MAKES THE

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HEALTHY LEG LESS STABLE.
AND SO IT IS CAUSING THEM TO

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HAVE TO SPEND MORE TIME AND TRY
HARDER TO WALK WITH THEIR

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IMPAIRED LEG.
>> DR. REED'S DESIGN IS BASED ON

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THE SPIRAL.
>> STANDING ON THE SHOE THERE'S

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BASICALLY THESE ASYMMETRIC
WHEELS THAT AS YOU PUT DOWN

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WEIGHT, THERE IS AN ASYMMETRY OF
WHERE THE AXLE FORCE IS AND

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WHERE THE GROUND REACTION FORCE
IS.

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SO AS YOU PUSH DOWN ON IT, IT
CAUSES THE WHEEL TO ROTATE.

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THAT ROTATION CAUSES THE SHOE TO
GO BACKWARDS.

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SO IT'S MIMICKING A SPLIT-BELT
TREADMILL IN THE SENSE THAT WHEN

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YOU STEP DOWN, IT'S CAUSING YOUR
FOOT TO GO BACKWARDS.

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>> HE'S USUALLY PRESENT DURING
EACH EVALUATION AND TRAINING.

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>> SOMETIMES DURING THE TRAINING
SESSION, THERE IS A PIECE THAT

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BREAKS OR SOMETHING IS NOT QUITE
WORKING RIGHT.

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SO I HAVE TO GO AND GRAB IT, FIX
IT UP, AND KIND OF WORK ON IT.

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PUTTING IT ON THEM AND SEEING
AND GETTING THEIR FEEDBACK IS

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IMMENSELY VALUABLE TO FIND OUT
WHAT PARTS ARE NOT WORKING AS

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WELL SO WE CAN REDESIGN THOSE
AND TO KEEP THE ONES THAT ARE

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WORKING VERY WELL.
>> THESE CLINICAL TRIALS ARE

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BEING RUN WITH VERY STRICT
PROTOCOLS.

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>> WE'RE LOOKING AT HER WALKING
PATTERN, PROVIDE VERY MINIMAL

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GUIDANCE.
AND ALSO, WE HAVE TO CHECK

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BLOOD PRESSURE AND RESPIRATORY
RATE AS WELL AS HEART RATE.

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[ MUSIC ]
>> SOMETIMES RESEARCH ENGINEERS,

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LIKE DR. REED, EXPERIMENT WITH
THEIR DESIGNS.

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>> THERE IS A DEVICE WE CAME UP
WITH CALLED THE KINETIC BOARD.

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IN SOME SENSE, IT'S A VERY LARGE
VERSION OF THE GEMS.

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YOU ACTUALLY KIND OF LEAN BACK
AND FORTH.

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AND THAT ROCKING BACK AND FORTH
MOTION ENGAGES THE BACK WHEELS

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AND THEN THE FRONT WHEELS AND
THAT ALLOWS YOU TO PROPEL

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YOURSELF FORWARD.
WE'VE ACTUALLY FOUND THAT IT

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DEMONSTRATES THE PRINCIPLE OF
THE GEMS.

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BECAUSE IT'S MUCH BIGGER,
YOU CAN SEE IT MOVING.

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YOU CAN UNDERSTAND HOW THE
PIECES ARE WORKING.

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ANOTHER SPINOFF WE HAD FROM IT
WAS TAKING THAT SAME WHEEL SHAPE

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BUT PUTTING IT ON THE END OF A
CRUTCH.

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SO IT'S NOT ENTIRE WHEEL SHAPE,
BUT IT'S MORE OF A CURVE THAT IS

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ASYMMETRIC FROM FRONT TO BACK.
THE SAME PRINCIPLE AS THE GEMS,

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WHEN YOU PUSH DOWN, BECAUSE IT'S
ASYMMETRIC, IT CAUSES A FORWARD

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MOTION THAT IS GOING TO ASSIST
YOU WHILE YOU'RE WALKING ON THE

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CRUTCH.
WITH THE KINETICRUTITCH TIP,

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IT ALLOWS YOU TO PLANT DOWN.
THEN ONCE YOU GET INTO THE

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MOTION, IT WILL PROPEL YOU
FORWARD.

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>> WHATEVER THE CHALLENGE,
DR. REED IS FOCUSED ON HELPING

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PEOPLE.
>> I STARTED LEARNING MORE AND

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MORE ABOUT THE PHYSICAL THERAPY
REALM AND JUST GOT A PASSION FOR

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IT THAT I WANTED TO MAKE THESE
DEVICES MORE EFFECTIVE SO IT CAN

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HELP PEOPLE RESTORE THEIR
MOTIONS THAT THEY HAVE.

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>> FOR TEST SUBJECT DIANE, SHE'S
WELL ON HER WAY TO RESTORING

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SOME FUNCTIONALITY TO HER GAIT.
>> NORMAL WALKING SHE IMPROVED

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ABOUT 20% IN THE WALKING SPEED.
AND STEP LENGTH, ABOUT 10 TO 20

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PERCENT SO FAR.
ALSO, WE CAN SEE MORE

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SYMMETRICAL GAIT PATTERN.
WE EXPECTED TO A CERTAIN EXTENT,

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BUT THE OUTCOME WE ARE LOOKING
AT IS BEYOND WHAT WE EXPECTED.

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THIS IS VERY PROMISING.
>> WELL, I KNOW I'M NEVER GOING

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TO BE A HUNDRED PERCENT, BUT,
YOU KNOW, I WANT TO GET AS CLOSE

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TO THAT HUNDRED PERCENT AS
POSSIBLE.

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AND I THINK THE SHOE IS REALLY
HELPING OUT.

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>> THE GOAL IS TO BE ABLE TO
MASS-PRODUCE THE GEM SHOE AND

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MAKE IT AVAILABLE TO ALL
PATIENTS IN THE NEAR FUTURE.

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>> I WOULD LOVE TO SEE THE GEMS
BE AVAILABLE AT EITHER A RENTAL

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MODEL OR LOW COST FOR PURCHASE
WHERE PEOPLE CAN GO INTO A

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CLINIC, LEARN HOW IT WORKS AND
THEN COME BACK AND TAKE IT WITH

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THEM TO HOME.
AND THEY COULD TRAIN EVERY

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SINGLE DAY FOR A MONTH, TWO
MONTHS, HOWEVER LONG THEY NEED

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IT TO BE ABLE TO GET TO THE
WALKING ABILITY THAT THEY WANT.

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>> QUEST FOR INNOVATION AT: