内蒙古汉族、蒙古族与日本学生身高和体质量的最大发育年龄段差异

分析2014年7-18岁内蒙古汉族、蒙古族和日本学生身高及体质量最大发育年龄差异。汉族和蒙古族数据来自《2014年内蒙古自治区学生体质与健康调查研究》;日本数据来源于“平成26年（2014年）度体育与运动调查统计情报”。结果显示：7-18岁各年龄段汉族男女生身高分别比蒙古族高出1.98 cm和1.54 cm;高出日本2.59 cm和2.91 cm（P<0.05）。汉族男生体质量平均高出蒙古族1.97 kg、高出日本4.01 kg;汉族和蒙古族女生体质量分别比日本高出2.59 kg（P<0.05）和2.67 kg（P<0.05）。2014年内蒙古汉族和蒙古族学生身高和体质量发育水平优于日本学生。汉族男生身高最大发育年龄分别提前蒙古族和日本1.73岁和0.9岁;汉族和蒙古族男生体质量最大发育年龄分别比日本滞后1.17和1.07岁;日本女生身高最大发育年龄比汉族和蒙古族提前0.68岁和0.37岁。

Differences of maximum growth age in height,mass among Han,Mongolian and Japanese students

To analysis the development status of height and mass with Han, Mongolian students in Inner Mongolia and Japanese students aged 7-18 in 2014, and explore national difference of the maximum growth age in height and mass. The data of Han and Mongolian students were from “2014 survey on the physical fitness and health of students in Inner Mongolia autonomous region”; Data of Japanese students were obtained from “statistical information of the Heisei 26 annual sports survey” of Ministry of Education, Culture, Sports, Science and Technology-Japan. The national differences of the development status of height and mass, maximum growth age in height and mass(MIA-H, MIA-W) among Han, Mongolian and Japanese students were compared. The Results showed that height of both Han male and female were taller than Mongolian and Japanese at aged 7-18, 1.98 cm and 1.54 cm higher than Mongolian, and 2.59 cm and 2.91 cm higher than Japanese on average respectively(P<0.05). The height of Mongolian male and female were 0.61 cm and 1.37 cm taller than Japanese (P<0.05).The mass of Han male was 1.97 kg Heavier than that of Mongolian and 4.01 kg Heavier than that of Japanese on average(P<0.05). The mass of Han female was similar to Mongolian, and 2.59 kg and 2.67 kg heavier than Japanese on average respectively(P<0.05). Han boys has the earliest maximum growth age in height(HIA-H) at 10.66 years, which is followed by Japanese in 11.56 years and Mongolian in 12.39 years. The HIA-H of Japanese female was 9.73 years; Han and Mongolian female were 10.41 years and 10.10 years respectively. The maximum growth age of mass(MIA-W) among Han Mongolian and Japanese male were 12.52 years,12.62 years and 11.45 years; MIA-W in female was 10.59 years, 10.34 years and 10.14 years respectively. In 2014, the development levels of height and mass of Han and Mongolian students aged 7-18 in Inner Mongolia were higher than Japanese students of the same age. HIA-H of Han male was 1.73 years earlier than Mongolian and 0.9 years earlier than Japanese respectively, and HIA-W of Han and Mongolian male were 1.17 years and 1.07 years later than Japanese. HIA-H of Japanese female was 0.68 and 0.37 years earlier than Han and Mongolian.