ABSTRACT
Objective To know the status of main physical development among the junior middle school students.Methods A total of 537 students from 4 middle schools of Jiangcun and Wenxin community were selected by cluster sampling method. Height,weight,vital capacity,systolic pressure,diastolic pressure and pulse were measured.The physical developmental status of students in the grade three was evaluated according to the Chinese Junior Middle School Student's Height -Weight Standard.The vital capacity and blood pressure were compared among the students with different physical fitness index. Results The height,weight,vital capacity and blood pressure of those students increased with age.Vital capacity and blood pressure were associated with height and weight (both P <0.05),while pulse was not statistically associated with height and weight (P >0.05 ).The results of emaciation (male:9.47%,female:0.73%),underweight (male:44.70%,female:27.47%),normal weight (male:23.1 1 %,female:47.99%),overweight (male:5.68%,female:6.59%)and obesity (male:1 7.05%,female:1 7.22%)were found by the physical fitness index evaluation.There were significant differences between males and females on vital capacity and blood pressure among students with different physical fitness index.Conclusion The major physical fitness index of junior middle school students in this study shows that they were well developed,while the proportion of emaciation and underweight among the male students is obviously higher than that of the female students.Health education and health promotion should be strengthened.