Physical exercise is an accessible form of prevention and treatment of the loss of bone mass, has no side effects, its cost is low, and also provides additional benefits in this field on postural stability and the prevention of falls. Numerous Randomized Clinical Trials (RCTs) carried out in humans suggest that the exercise of force may improve Bone Mineral Density (BMD) in the critical sites of occurrence of fractures related to the OP. A study with athletes from 70 to 81 years showed that exercise with load, regardless of the type (power, endurance or speed), led to a higher bone mineral density (BMD) than observed in controls. Furthermore, exercises that produce dynamic muscular forces of short duration and high frequency over the bone originate greater density. This fact and the factor site also show to see how tennis players from 70 to 84 years have between 4 and 33 percent more than in the dominant arm bone mass compared to the contralateral. Scholarly peer review is the process of subjecting an author's scholarly work, research, or ideas to the scrutiny of others who are experts in the same field, before a paper describing this work is published in a journal. The work may be accepted, considered acceptable with revisions, or rejected. Peer review requires a community of experts in a given (narrowly defined) field, who are qualified and able to perform reasonably impartial review.