Percentile normal values and curves of velocity for school-age children and adolescents in Shanghai

Objective To establish the normal values and curves of the velocity of children and adolescents in Shanghai,and to provide a scientific basis for the evaluation of the physical development of children and adolescents.Methods A total of 15 422 students aged 7-18 selected from Huangpu,Xuhui,Zhabei,Minghang,Fengxian,Pudong district in Shanghai in 2014 were investigated about their physical quality and health.And LMS method (Tim Cole) was applied to establish the percentile value of 50 meters.Results Sex age specific percentiles of P3,P5,P10,P15,P25,P50,P75,Ps5,Pg0,P95,P97 and curve of velocity were recorded.The students in primary and middle schools in Shanghai in 2014 have got increasingly great results with the increase of their age,and the boys were better than girls,and the students in Shanghai achieved higher than the national level.Conclusion The percentile narmal and curves provide a visual assessment for school-age children's velocity.