The shock-absorbing capacity of shoes will diminish even before the shoe appears worn out. Running and jumping on roads concrete hard gym floors or dry, compacted, hard fields can increase the risk of stress fracture-particularly if the athlete isn't used to training on such surfaces. An overly rapid increase in activity-particularly high-impact activity-does not allow adequate time for the bones to adapt to the increased levels of stress. This is a risk because it may include a combination of many of the other risk factors. A high-arched foot is more rigid and transmits more stress to the bone a flat foot causes greater demands and fatigue of protective muscles resulting in less shock absorption by the muscles. Low estrogen levels in females menstrual dysfunction.Inadequate caloric intake inadequate calcium intake.However, there are additional risk factors related to the individual and to the training pattern that can further increase the risk of developing a stress fracture. With sufficient levels of stress to a bone, anyone can develop a stress fracture. Stress fractures are more common in endurance athletes or athletes who perform repetitive, high-impact activities. It is different from a fracture that occurs after a traumatic event, such as a fall. Stress fracture (also called a fatigue fracture) is a weakening or thin crack in a bone caused by repetitive stress on the bone.
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