Bio-mechanicsFor reasons having to do with pregnancy, women are proportionately
wider in the pelvis than men. The angle formed by the line extending from the
hip to the center of the knee (patella) and the line that goes from the center
of the knee to the tibia, is called the quadriceps angle or Q angle. In
literature, the Cheap Oakley
average referenced value of this angle is 11 degrees for males and 14 degrees
for females.The relationship between the pelvis and knee in women, causes
differences in sport bio-mechanics, as women tend to attack the ground with the
foot more rotated to the outside, resulting in a more intense internal rotation.
This increased unstable Cheap christian
louboutin pronation could increase the risk of injuries. Some
manufacturers have Cheap Oakley
Sunglasses this bio-mechanic differences into account. The main
implications for the design of the footwear include dual-density unit, a more
rounded heel and absorbing viscous-elastic material placed in order to delay the
initial rotation of female feet after the initial contact with the soil.The
cycle of ovulationIn addition to structural and anatomical differences between
Cheap Oakley
Sunglass the two sexes, there are also hormonal differences.
Intuitively, many women athletes have some sports injuries associated with their
periods of fertility.In late 2000, researchers showed that during the peak
presence of estrogen in the body (which functions as a muscle relaxant), the
plantar fascia is affected, becoming more elastic, thus influencing the
bio-mechanical behavior called "Windlass mechanism". The arch of the foot
flattens and the rate of medium-lateral knee acceleration increases, a factor
that some researchers suspect to be associated with the appearance of certain
lesions.Given these cyclical bio-mechanical changes, some manufacturers of
athletic footwear launched models with deformable materials used on the medial
side, which allow accommodating the anatomical differences of the plantar arch
caused by these cycles. Additionally, some female role models have a ratio
between the heel and forefoot higher (greater wedge), reducing the likelihood of
developing certain lesions that are suspected to be associated with the rotation
of the knees.
Article Source:http://www.christianlouboutincheapc.com
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