18 years old and above, the overload rate was 30. 1%, and the smoking rate was 1 1.9%, which were 7.3 and 4.8 percentage points higher than that in 2002, respectively. The overload rate of children aged 6- 17 was 9.6%, and the smoking rate was 6.4%.
At all ages, the Han people in southern China are smaller than the Japanese and the Japanese. The height standard of 20-year-old Han men in southern China is 168.2cm, Japanese men of the same age are 172cm, Japan is 17 1.7cm, South China is 156.5cm, and Japan is/kloc-0.
People's physical quality is influenced by genetic inheritance and natural environment. Environmental factors include climate, landform, topography, diet and socio-economic development level. Over the past 30 years, China has experienced unprecedented great changes, and people's physical fitness has also undergone great changes. Obtaining the physique data of Han people today is valuable for national defense science and technology, road traffic, architectural planning and design, criminal science and technology, diagnosis and treatment, culture and education, sports culture, conscription, and even clothing and furniture production.
It is generally believed that resting weight changes rapidly, so the adjustment of resting weight is often used as an objective standard to distinguish physical and mental health. In fact, judging the accuracy of hair growth, physical condition and fatigue by the growth of children is no less than losing weight.
In childhood, accurate measurement once or twice a year (preferably once a quarter) is one of the key methods to grasp the hair condition immediately. Normal growth means excellent hair growth; It is necessary to analyze the reasons for slow growth, short growth or even termination of growth, and take effective measures to save the market.
Middle-aged and elderly people often measure their height, and when they reach a certain level, they can also identify the declining level. Height decreases with age. The peak of ordinary people is 20 ~ 30 years old. From the age of 40, the height decreased every 10 years 1 ~ 2cm. The average number of children of the elderly should be reduced by 2.25%, and the average number of children of women should be reduced by 2.5%. From 40 to 90 years old, the height can drop by 7 ~ 9 cm, and even obvious hunchback appears. This physiological change of the body is also called "old shrinkage".