Ginet J
Laboratoire de Physiologie, Faculté de Médecine, Nantes.
Bull Acad Natl Med. 1995 Oct;179(7):1493-502; discussion 1502-3.
The ageing is a daily physical activity's reduction and after 80 years can led to dependence. The physiological factors of this evolution are: reduction of striated muscular mass, reduction of cardiac output, reduction of VO2 max from 50 ml.min-1.kg-1 at 30 years to 20 ml.min-1.kg-1 at 80 years. On average the reduction of moving functional capacity in 10% by decade. The studies show in fact that the half of reduction is due to ageing, and the other half to sedentary life. The lower limit is 15 ml.min-1.kg-1, threshold of dependence; it is an expensive and irreversible stage. To slow down the dependent people's number, it is one alone way: physical and sports activity in endurance from 55 years. With these exercise and method, the dependence is put back 10 or 20 years for anyone. We prevent the fact that we do not know cure.
衰老表现为日常身体活动减少，80岁以后可能导致生活不能自理。这种演变的生理因素包括：横纹肌质量减少、心输出量减少、最大摄氧量从30岁时的50毫升·分钟⁻¹·千克⁻¹降至80岁时的20毫升·分钟⁻¹·千克⁻¹。平均而言，运动功能能力每十年下降10%。事实上，研究表明，这种下降的一半归因于衰老，另一半归因于久坐不动的生活方式。下限是15毫升·分钟⁻¹·千克⁻¹，即生活不能自理的阈值；这是一个代价高昂且不可逆转的阶段。为了减缓生活不能自理者的数量增长，只有一种办法：从55岁起进行耐力体育活动。通过这些锻炼和方法，任何人都可以将生活不能自理的时间推迟10年或20年。我们要预防这种我们尚无治愈方法的情况发生。
