Transcript Selecting the Proper Footwear

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Feet sustain 2 or 3 times your body
weight
Each foot has more than 100
muscles, tendons, and ligaments
6 times force of gravity is exerted on
the foot during aerobic activity
67 million Americans walk to
exercise
When rebounding in basketball, 10
times the force of the jumpers body
weight during the landing phase
25,000 heel strikes during a
marathon
Body weight of tennis player is
magnified 3 to 4 times during
start/stops
Components of
Shoe
Outsole- Traction, durability,
various patterns
(e.g.: tire of car)
Midsole- shock absorption,
cushioning, stability
(e.g.: suspension)
Midsole
Upper
Upper- secures foot, stability
(e.g.: body of the car)
Outsole
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Carbon rubber- synthetic rubber with carbon,
used in running shoes
Duralon- soft, synthetic rubber, used in
running shoes
Gum rubber-traction for indoor surfaces, used
in basketball, cross-training, and volleyball
shoes
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Waffle-running shoes
Herringbone-court shoes
Hybrid- mix of waffle and herringbone, crosstraining
All-trac-mixture of waffle, herringbone, and
hybrid, outdoor
*Enhancements (Flex grooves, outriggers)
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Eva- cheapest material, compressed foam,
lightweight
Phylon-responsive, light, molded, contains Eva
PU-durable, stable, heaviest, firm
Phylite-composed of Phylon and rubber,
molded, acts as a midsole and outsole
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Footframe
Contoured footbed
Footbridge
Midfoot shank
Dual density Phylon
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Test run
Sport-specific
Individualized
Determine Foot-type
Workout Regime
What is most important about buying
a sport specific shoe?
Should we take into account gender when
Selecting a shoe?
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Prevention of injuries
Performance driven shoe
Gender-specifically designed (weight,
structure, cushioning etc)
Key: cushioning, stability, surface, distance
OVERPRONATION
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Roll of the foot too far
inward
Weight on the inside of
the foot
Unstable
Flat/low arches
*Pronation-normal
motion of foot
SUPINATION
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Opposite of pronation
Weight on the outside
of the foot
Higher arches
Overpronation
Supination
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*Activity
Curved Last- will
benefit individuals
with a high arch
(flexibility)
Straight Lastbeneficial for
individuals with overpronated feet
(stiffness)
Semi-curved Lastflexibility and stability
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Aerobics- shock absorption, forefoot
cushioning and stability, lateral movement,
cross-trainer
Biking/Cycling- really need a shoe engineered
for biking but you can pass with a cross-trainer,
stiff, rigid outsole, shank
Hiking-uneven ground, need good traction and
flexible shoe on forefoot, trail-running shoe
Running-rolling motion of the foot, slightly
elevated heel
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Basketball-lateral movement, pivoting, cutting,
start/stops, jumping, hard surface, ankle
support, shock absorption
Volleyball- midfoot cushion, responsive shoe,
flexible
Walking-cushioning and stability
Tennis-needs to be specifically designed for
tennis to allow some sliding, start/stops, lateral
movement, soft arch, padded forefoot
Life Expectancy of
Athletic Shoes
-Replacement of your shoes
with wear and tear is
imperative
-Signs of wear:
-worn out outsole
-cracks in midsole
-diminished elasticity
-Ramifications of wearing old
worn-out shoes:
-back pain
-knee pain
-foot/ankle pain
-Hip pain
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Run: 350-500 miles (4-6 months)
Walk: 500-600 miles ( once a year)
Cardio, weights: 70-90 hrs of exercise
Basketball: every 3 months
Determinants of Sneaker life span
-workout (type, frequency, duration,
intensity
-weight
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Nike Free (3.0, 5.0, 7.0)
Equalon
Pegasus
360/180
Walker
Shox
Impax
Basketball/volleyball
Vapor
Alvord
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Encapsulated Air- least expensive, absorbs
impact
Visible Air- pressure distributed around heel
Blow Molded-more complex, highest air
volume, sport specific
Zoom Air-thin, responsive
Tuned Air-highest air volume, sport specific,
specific to body weight, low air pressure
Tube Air-softer, consistent cushioning over a
broader base, stability
The fantastic foot. (2004). Foot Care Basics (2007).
Spiker, T. (2007, June). THE RUNNER’S BODY. Runner’s World, 42(6), 79-80.
The Art and Science of Athletic Shoes. (1991, October). Current Health 2, 18(2), 24.
Kirby, M. (2005, October). TEST-RUN. National Geographic Adventure, 7(8), 48-48.
Scott Frampton. Esquire. New York: Jul 2006. Vol. 146, Iss. 1; pg. 46, 1 pg
Switch out your sneakers. (2006, September). Shape.
Radovic, P. (2005). Running & your feet. California Foot & Ankle Associates, Inc (2005).
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