The study of the conection between dieting and low physical activity on bone mineral density in the young and the effect of proper diet and physical activity which lead to an increase in bone mineral density

预防骨质疏松症的策略不仅集中在预防成年期的骨质流失，而且还集中在生长发育期间高峰骨量的增加上。儿童和青少年时期的饮食习惯和日常体力活动对骨量有影响。日本人的食物种类繁多。另一方面，为了时尚而节食、不吃饭和/或不平衡的饮食已经成为一个严重的健康问题。其中一个问题是年轻人骨量低。除此之外，由于一个更加机械化和便利的社会，我们日常生活中的体力活动减少了。因此，研究骨密度与体质、骨密度与身体活动量的关系具有重要意义。此外，有必要让人们认识到年轻人骨密度低的危险。老年骨质疏松症患者的数量可能会减少，因为在年轻时预防骨质疏松。因此，本研究对健康女大学生的体质、饮食习惯、日常体力活动、运动和骨密度（DXA）进行了调查。注意节食的低体质指数（BMI）受试者的骨密度显著低于正常体质受试者。除此之外，他们的饮食不均衡，比如低能量摄入和过量的维生素A摄入。运动组受试者的骨密度显著高于非运动组。腰椎骨密度与跟骨骨密度呈显著正相关。此外，体质不仅影响腰椎骨密度，还会影响跟骨骨密度。这些结果表明，除了摄入足够的钙和能量外，均衡的饮食、正常的体质和高强度的体育活动对预防低骨密度很重要。此外，可能会说那些关心自己体重的人或不太活跃的人的骨密度较低。除此之外，不平衡的饮食会导致体重过低，这可能是一个严重的健康问题。测量跟骨骨密度也是有用的，而且没有风险。预防青年低骨密度是预防老年骨质疏松症的必要条件。因此，从年轻人开始进行健康筛查，包括测量骨密度和指导生活方式，对于预防未来骨质疏松症至关重要。少

Strategies for the prevention of osteoporosis have focussed not only on the prevention of bone loss during adult life but also on the increase of high peak bone mass during growth and development. The eating habits and the daily physical activity in childhood and adolescence influence the bone mass. Japanese have a large variety of food in abundance. On the other hand, dieting for fashion purposes, skipping meals, and/or unbalanced diets have become a serious health problem. One such problem is low bone mass in the young. In addition to this, the physical activity in our daily lives has lessened due to a more mechanized and convenient society. Therefore, it might be important to research about the relation between bone mineral density (BMD) and physique, and between BMD and physical activity level. Moreover, it could be essential to enlighten the people as to the dangers of low BMD in the young. The number of elderly patients with osteoporosis might decrease due to the prevention of lo … More w bone mass at a young age.Therefore in this study, the physique, the eating habits, the daily physical activity, the exercise and the BMD (by DXA) of healthy female university students were investigated. The BMD in the subjects with low body mass index (BMI) , who have conserned dieting, was significantly lower than that of the subject with a normal physique. In addition to this, they ate an unbalanced diet, such as low energy intake and excess vitamin A intake. The BMD of the subjects in the exercise group was significantly higher than that of the non-exercise group. There was a significant positive correlation between the lumbar spine BMD and the calcaneus BMD.Moreover, the physique influences not only the lumbar spine BMD but also the calcaneus BMD.These results suggest that not only a sufficient intake of calcium and energy but also a balanced diet, normal physique and high physical activity are important to prevent low BMD.Moreover, it is possible to say that the people who are concerned about their weight or people who are not very active have a lower BMD.In addition to this, an unbalanced diet causes low body weight, and it might be a serious health problem. Taking the measurement of the calcaneus BMD could be also useful and also without risk. The prevention of the low BMD in the young is necessary to prevent osteoporosis in elderly. Therefore, the health screening, including the measurement BMD,and instructions in life style are essential from the young for the prevention of osteoporosis in the future. Less