| In the past 20 years or so, the studies on students' physique have mainly focused on the description and comparison of students' physique in various areas, and less studies on the development law or dynamic variations of students' physique such as body shapes. This study, on the basis of the survey of the students' physique nationwide in 1985, selected the middle and elementary school students of 7 - 18 years old in 1985, 1995 and 2005 as the subjects and the body shape indices as the research content. Having compared the variations of the development level and speed of the students' body shapes in the 20 years, the article reveals the development law of the body shapes of the Chinese students so as to provide theoretical reference to the improvement of Chinese students' physique and school physical education and health work. The result of the study shows the following : (1)The height, weight and chest circumference of the students increased to some extent in 1985 - 2005. The level of the development shows a distinct long tendency. But compared with those in the former 10 years (1985 - 1995), the increase value and increase speed of the height, weight and chest circumference in the latter years (1995 - 2005) show the different characteristics. The height appears to be fast at first and slow later. The weight appears to be slow at first and fast later. The increase of the chest circumference remains the same. That is to say, the height development of the Chinese students may slow down in the years to come, but the peak periods of weight and chest circumference development will continue. (2)In the years of 1985 - 2005, the development speed of the Chinese students' body shapes is characterized by acceleration as a whole, earlier fast growth period and the extension of the continuous growth period. (3)There is no significant changes of the fast growth period of the height, weight and chest circumference in the 20 years. But attention must be paid to the delay of the fast growth period of the chest circumference of the male students in the urban and rural areas. |
