shepperd 发表于 2011-11-27 01:46
谁给点提示,说的啥意思,有啥好处?
你准备买鞋了？
shepperd 发表于 2011-11-27 01:46
谁给点提示,说的啥意思,有啥好处?
Rotary versus Lateral boot designs
If the inside rivet is either lower or farther back than the outside rivet, the tracking of the boot while it flexes will tend to be inward and pressure will be transferred to the ski with rotation. These boots are considered rotary in design. For most skiers this is a boot type to be avoided. It reduces edging and makes balance more difficult. Normal human anatomy, favors inward rotation of the legs. Further, today’s shaped skis produce their own rotational forces in the direction of the turn. Moreover, the most common foot/ankle issue is excessive pronation; and many skiers have leg and knee issues that also enhance knock kneed symptoms and excessive internal rotation of the legs. For all of these reasons, boots that support strong edging and balance are lateral in design. Lateral boots often have the outside rivet either lower or farther back than the inside rivet and “support the leg in balancing and directing tracking in a straight line or even to the outside” (Harb, 1997). Within limits, the more skilled and aggressive the skier, the more lateral of a boot is needed.
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