在美国有5000多万人的体重超过理想体重的10%或更多,因而可认为是肥胖者。其中有1500万人的肥胖达到严重威胁其健康的程度。由于肥胖所带来的问题包括糖尿病、变性性关节病和高血压,以及呼吸的并发症。后者不太为大家所熟悉但却是很重要的问题。必须了解肥胖所特有的呼吸生理,才能更好的对这些并发症进行评价。【肥胖的机械因素】肥胖也可描写为脂肪的过度聚积而致整个身体块头增加。因为肌肉必须为移动肥胖的身体而作功,故肥胖具有更高的代谢需要,其O_2耗量((?)O_2)及CO_2产生量((?)CO_2)无论在静息或活动时均比正常人高,并且在运动时,每分钟通气量((?)_E)因呼吸快速而增加,使动 More than 50 million people in the United States weigh more than 10% or more of their ideal body weight and are considered obese. Of these, 15 million obese people reach a serious threat to their health. Problems due to obesity include diabetes, degenerative joint disease and hypertension, and respiratory complications. The latter is not so familiar to everyone but it is a very important issue. To understand the obesity unique respiratory physiology, in order to better evaluate these complications. [Mechanical factors of obesity] Obesity can also be described as excessive accumulation of fat and lead to an increase in the bulk of the body. Because muscle must work to move obese body, so obesity has a higher metabolic needs, its O 2 consumption ((?) O 2) and CO 2 production (CO 2) both at rest or activity than Normal high, and in sports, minute ventilation ((?) _ E) due to rapid increase in breathing, so that the move