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10 Cards in this Set
- Front
- Back
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Impact Forces in Running
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-Each foot hits ground 50-70 times per minute
-Impact force is 2-3 BW or up to 5X |
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Types of Runners
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80% heel strikers
20% strike with mid/forefoot |
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Types of Feet
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-Flat Foot or Pes Planus
-Normal -High Arch or Pes Cavus |
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Pes Planus
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-Leads to excessive pronation
-Increase risk of: *Anterior knee pain *Shin Splints *Achilles tendonitis *Metatarsel stress fracture |
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Pes Cavus
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-rigid foot
-underpronation -Increase risk of *Tibial stress fracture *Lateral hip, knee, ankle pain |
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Types of Running Shoe Design
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-Cushioning
-Motion Control -Stability |
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Anatomy of Running Shoe
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-Upper
-Midsole (made of EVA or PU, provides shock and motion control) -Outersole, 3types: blown rubber, solid rubber, carbon rubber. Protect midsole and traction |
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Anatomy of Running Shoe cont'd
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-Tongue-cusion to lacing
-Toebox-depth of toe region. necessary to prevent blisters on top of toes -Lacing System-support midfoot -Heel counter-stability to rear foot -Heel notch-decrease stress on achilles |
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3 Methods of Lasting (shoe templates)
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-Board: promote stability, no stiching down the middle
-Slip:promote flexibility -Combination: provides rearfoot stability and forefoot mobility. stitching on sides and down center towards toes |
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3 Types of Lasts:the straighter the shoe, the more inherent resistance to pronation
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-Straight
-Semi-Curved -Curved-encourage mobility and less stability. more curved towards inside |
