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

Outsole- Traction, durability, various patterns(e.g.: tire of car)

Midsole- shock absorption, cushioning, stability(e.g.: suspension)

Upper- secures foot, stability(e.g.: body of the car)

Midsole

Upper

Outsole

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

Waffle-running shoes Herringbone-court shoes Hybrid- mix of waffle and herringbone,

cross-training All-trac-mixture of waffle, herringbone,

and hybrid, outdoor

*Enhancements (Flex grooves, outriggers)

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

Footframe Contoured footbed Footbridge Midfoot shank Dual density Phylon

Test run Sport-specific Individualized Determine Foot-type Workout Regime

What is most important about buyinga sport specific shoe? Should we take into account gender when Selecting a shoe?

Prevention of injuries Performance driven shoe Gender-specifically designed (weight,

structure, cushioning etc)

Key: cushioning, stability, surface, distance

OVERPRONATION SUPINATION

Roll of the foot too far inward

Weight on the inside of the foot

Unstable Flat/low arches

*Pronation-normal motion of foot

Opposite of pronation

Weight on the outside of the foot

Higher arches

Overpronation Supination

Curved Last- will benefit individuals with a high arch (flexibility)

Straight Last- beneficial for individuals with over-pronated feet (stiffness)

Semi-curved Last- flexibility and stability

*Activity

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

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

-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

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

Nike Free (3.0, 5.0, 7.0) Equalon Pegasus 360/180 Walker Shox Impax Basketball/volleyball Vapor Alvord

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 pgSwitch out your sneakers. (2006, September). Shape.Radovic, P. (2005). Running & your feet. California Foot & Ankle Associates,

Inc (2005).Nike On-Boarding