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Nutrition and physical quality development
Nutrition and physical quality development
Physical fitness refers to the basic activity ability achieved by the functions of human organs and systems through muscle activity. It mainly includes strength, speed, endurance, agility and flexibility. Although the quality of physical fitness is closely related to heredity, it also has an important relationship with acquired nutrition and physical exercise.
In order to find out the current situation of students' physique, explore the characteristics and some changing laws of students' physique, the research group of students' physique health in China conducts a sample survey of students' physique every five years or 10 years. At present, physical fitness is basically measured by 50m running, standing long jump, oblique pull-ups (male), pull-ups (male), sit-ups (female), running back and forth in front of the station, 50m× 8 running, 800m running (female) and1000m running (male). These test items basically reflect the qualities of speed, bounce, strength, flexibility and durability. Judging from the test results, the speed quality is basically improved year by year with the growth of age.
Due to the differences between men and women, urban and rural areas, especially the differences in physical exercise and labor level, as well as the differences in nutrition supply, the test results of their quality are obviously different. For example, the improvement of boys is greater than that of girls. Especially when 14 ~ 18 years old, urban and rural girls ...