Sports shoes & surfaces

Question 1

Shoe stability (motion control definition)

Answer 1

The ability of the shoe to resist excessive or unwanted motion of the ankle

quantified by measuring rearfoot motion

Question 2

Shoe design characteristics - shoe shape

Answer 2

medial or lateral heel flare

Question 3

Shoe design characteristics - Supportive features

Answer 3

medical posting, dual density

Question 4

Shoe design characteristics - orthotic devices

Answer 4

Wedging, posting

Question 5

Previous studies findings about biomechanical influence of orthotic devices

Answer 5

Conflicting results

• some sig reductions in peak eversion & E velocity
• some no sig effect

Question 6

Why are there discrepancies in the studies results?

Answer 6

different prescriptions

difference construction & materials of devices

Question 7

Shoe/surface cushioning definition

Answer 7

Reduce peak impact forces

Provide cushioning during ground contact phase

Question 8

What is high impact force data at foot strike linked with

Answer 8

increased injury risk

Question 9

What does cushioning in shoes do?

Answer 9

Reduces impact forces and reduces loading rate (slower speed of Collison)

Question 10

Shoe - surface friction relationship

Answer 10

Too much grip when slide is expect can lead to sudden stop and ankle injuries

The grip/friction of the surfaces produces a much larger difference compared with the grip/friction of the shoe