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运动性月经不调(简称AMI)是否与体脂过低有关这个课题,人们的研究结果尚未取得一致。由于体脂(BF)过高或过低都会影响AMI发病率,故以往用体脂均数差异的显著性检验来确定BF对AMI发病率的影响,易导致判断失误。为此,作者对56名业余体校女长跑运动员(13～17岁,训练年限为1～7年)及普通初、高中女生293名(13～20岁)进行了调查。调查时间:运动员(A)组于省运动会前两天;对照(C)组于升学考试前两月。月经情况用询问方式调查。观察指标:身体密度(D),按日本体育学会测定评价专科分会的标准(女15～18岁)D=1.0931-0.00160×(上臂皮褶厚+肩胛下部皮褶厚),女19岁及以上D=1.0897-0.00133×(上臂皮褶厚+下肩胛部皮褶厚);PBF(体脂百分数,F％)
Whether exercise-induced irregular menstruation (referred to as AMI) and body fat is low on this issue, people’s findings have not yet been agreed. Because the body fat (BF) is too high or too low will affect the incidence of AMI, so the past, the body fat difference between the significant test to determine the impact of BF on the incidence of AMI, easily lead to misjudgment. To this end, the author investigated 56 amateur sports school female long distance runners (13 to 17 years of age, training period of 1 to 7 years) and the general junior high school girls 293 (13 to 20 years old) were investigated. Survey time: athletes (A) two days before the provincial games; control (C) two months before the entrance exam. Menstrual conditions survey by way of inquiry. D: 1.0931-0.00160 × (upper arm skin folds + skin thickness of the lower part of the scapular), female 19 years old and above (female 15-18 years old) according to the standards of the Japan Sports Institute Evaluation and Evaluation Branch D = 1.0897-0.00133 × (upper arm cuff thickness + lower scapular skinfold thickness); PBF (body fat percentage, F%)