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目的 :探讨青少年矮身材的影响因素。方法 :调查郑州市 3 2 4 0名学生中矮身材所占比率 ,把低于当地同年龄、同性别平均身高 2个标准差者确定为矮身材。选取 96例矮身材作为病例组 ,再选取同学校、同民族、同性别、同年龄身高位于 x～ x +2s内的学生作为对照组 ,进行 1∶1配对。对所有选入学生进行问卷调查、体格检查、头发微量元素及血清睾酮 (T)、生长激素 (GH)测定。结果 :矮身材检出率为 3 .2 1 % (1 0 4 / 3 2 4 0 ) ;病例组出生时有难产史例数高于对照组 (P <0 .0 5) ,出生体重低于对照组 (P <0 .0 1 ) ;病例组中偏食和不常参加体育活动的人数明显高于对照组 (P <0 .0 5和P <0 .0 1 ) ;病例组男生血清激素T水平 ( x =869.7ng/L)明显低于对照组 ( x =2 70 0 .4ng/L) (P <0 .0 1 )。结论 :矮身材的发生与出生时难产、低出生体重、偏食、体育运动少有关 ;睾酮水平低下可能是导致男生身材矮小的直接内分泌因素
Objective: To investigate the influencing factors of short stature of adolescents. Methods: To investigate the ratio of short stature of 3 240 students in Zhengzhou City, and to determine the short stature as the standard deviation of height below the same age and same sex of the same sex in the same city. 96 cases of short stature were selected as the case group, and then the students with the same nationality, same nationality, same sex and the same age in the range of x ~ x + 2s were selected as the control group. All students were surveyed, physical examination, hair trace elements and serum testosterone (T), growth hormone (GH) determination. Results: The detection rate of short stature was 3.2% (104 cases). The incidence of dystocia in case group was higher than that in control group (P <0.05), the birth weight was lower than (P <0.01). The number of partial ejaculation and infrequently participating in physical activity in case group was significantly higher than that in control group (P0.05 and P0.01). The serum level of serum hormone T (X = 869.7 ng / L) was significantly lower than that of the control group (x = 2 70 0 .4 ng / L) (P <0.01). Conclusion: Short stature is associated with low birth weight, low birth weight, partial eclipse, and low physical activity. Low testosterone may be the direct endocrine factor causing short stature in boys