Influence of Body Mass Index, Waist Circumference, and Physical Activity on Age of Menarche in Female Adolescent

[摘要] Background: The age of menarche which was referred to first time of teenagers had menstruation can be affected by anthropometric index, including body mass index, and waist circumference.Differences in measurement of body mass index, waist circumference, and intensity of physicalactivity will make some differences in age of menarche. This research aimed to determine theinfluence of body mass index, waist circumference and physical activity with age of menarche inlate adolescent girls in Surakarta.Subjects and Method: The data collected by observed 359 adolescent girls aged 15 until 18 yearsold in Surakarta during September to October 2016 using observational analytic with crosssectional methods. The independent variables were body mass index, waist circumference, andphysical activity. The dependent variable is age of menarche. Body mass index is measured usingBW (kg)/BH² (m²) formula, in which: BW is Body Weight (measured using digital standardizedscales) and BH is Body Height (measured using standardized microtoise). Students asked to fill inthe questionnaire that contain questions regarding reproductive health especially menarche andphysical activity questionnaire (IPAQ). The data is processed using SPSS for Windows 23.0 and areanalyzed using multiple regression analysis.Results: From the 359 respondents, the mean of age of menarche is 12.6 years (Mean= 12.6; SD=1). Mean of body mass index is 21.42 kg/m² (Mean= 21.42; SD= 4.44). Mean of waist circumference is 70.41 cm (Mean= 70.41; SD= 7.47). There are 87 respondents (24.2%) with low physicalactivity, 100 respondents (29.5%) with moderate physical activity, and 166 respondents (46.2%)with high physical activity. Physical activity has significant influence positively (OR= 1.98; 95% CI=0.39 to 4.72; p= 0.017) on the age of menarche.Conclusion: Physical activity has significant influence on the age of menarche in adolescent girlsin Kota Surakarta, Indonesia.

[学科分类] 食品科学和技术

[关键词] endocrinology;body mass index;waist circumference;physical activity;menarche;female student