جستجوی مقالات مرتبط با کلیدواژه « Age at menarche » در نشریات گروه « پزشکی »

Obesity affects various aspects of puberty development, including the hormonal parameters and onset of puberty during puberty. Therefore, the purpose of this study was to investigate the relationship between android obesity and menstrual disorders in different ages of menarche.

The present cross-sectional study adopted a cluster-sampling method to evaluate 2000 girls (aged 9-18) who were selected from all regions of Shiraz. Then, questionnaires were completed, including data on demographic characteristics, menstrual disorders, and the like. Then, their weight, height, waist, and the circumference of the hip were measured by the standard method, and finally, the data were analyzed by SPSS using statistical tests.

A number of 1945 (97.3%) out of 2000 girls had android obesity <0.85 and 55 (2.8%) of them suffered from android obesity >0.85. Based on the results, no significant relationship was observed between android obesity and bleeding duration (P=0.09), menstrual cycle length (P=0.76), amenorrhea (P=0.98), dysmenorrhea (P=0.31), spotting (P=0.24), passing clots (P=0.35), menstrual regularity (P=0.89), and menstrual bleeding (P=0.08). However, a meaningful relationship was found between android obesity (P=0.001) and body mass index (BMI).

In general, most subjects did not have android obesity. Based on the results, there was a meaningful relationship between BMI and android obesity. However, no meaningful relationship was found between bleeding duration, passing clots, menstrual regularity, menstrual cycle length, amenorrhea, dysmenorrhea, spotting, and menstrual bleeding. Therefore, the necessity of paying more attention to adolescents in intervention programs and education is felt more than before in order to improve their nutritional status and health.

Age at menarche is the key indicator of puberty in females and the reflector of populations’ health that different hereditary and environmental factors can affect it. This study was conducted to determine the age at menarche and its relationship with body mass index (BMI) and demographic factors among students of Qaen, Eastern Iran. This cross-sectional study was conducted on 400, 10 - 16-year-old students of Qaen located at the East of Iran, in 2016. The participants were selected by the random multistage sampling of students in elementary and secondary schools that were eligible to participate in the study. Data collection was carried out through interviews and a checklist including demographic and menarche information as well as height and weight measurements in schools. The data were analyzed using SPSS V. 18 by Pearson’s correlation, t-test, and multiple linear regression. The mean age of students was 13.86 ± 1.10 years, mean BMI was 20.38 ± 2.72 kg/m2 and the mean age at menarche was 12.78 ± 1.23 (95% CI: 12.66 - 12.90) years. There was an inverse correlation between the age at menarche and BMI (r = -0.123, P = 0.014) while the height (r = 0.195, P = 0.0001), maternal age (r = 0.223, P = 0.0001), and sleep duration (r = 0.156, P = 0.002) were directly related to age at menarche. No significant relationship existed between age at menarche and weight of students (P = 0.86). The mean age at menarche of students was as average as Iranian studies. Lower age at menarche was significantly correlated with higher BMI.

Menarche, a milestone in the reproductive life span of a woman, is influenced by several genetics and environmental factors. There is no consensus regarding the impact of body mass index (BMI) and lipid profiles on the age of menarche, as the results of various studies demonstrate. To investigate the correlation between age of menarche and BMI/lipoprotein profile in a community sample of Iranian girls. In the study, 370 girls, aged 10-16 years, who began their menarche within six months prior to the study, were recruited from the Tehran Lipid and Glucose Study (TLGS) population. Information was documented regarding their body composition, including height, weight, BMI, waist and hip circumference were collected and their lipid profiles were assessed after a 12-hour fast. In this study, the mean±SD of age of menarche and BMI were 12.6±1.1 years and 21.7±3.9 kg/m2, respectively. There were statistically significant relationships between age of menarche and height, BMI, waist circumference, and the maternal educational level. The relationship between age of menarche and the weight and lipid profiles of subjects was not statistically significant. Age at menarche is not influenced by lipid profiles but it is influenced by BMI.

The present study was initiated to derive an indirect method for estimating body fat mass (BFM) and to evaluate the correlation between indirect anthropometric techniques for this estimation and to examine the relation of these parameters and of IQ to age of menarche. A total of 578 adolescent girls of ten junior high schools in five educational districts of Mashhad, participated in a cross sectional study during autumn 2000. The data were gathered through questionnaires, interview, measurement of anthropometric parameters including: weight, height, BMI (Body Mass Index), TSF (Triceps Skin Fold) thickness, SSSF (Sub-Scapular Skin Fold) thickness, MUAC (Middle Upper Arm Circumference), and measurement of IQ by Raven test. We demonstrated that anthropometric parameters for estimating BFM correlated well with each other. Age at menarche did not correlate with BFM measured by anthropometric parameters when studied at the onset of menarche, but it did well correlate negatively with these indices if studied any time postmenarche, regardless of the interval between the onset of menarche and the present age (p<0.001). IQ correlated negatively to the age at menarche (p< 0.001). These findings implicate that BFM does not trigger puberty onset in healthy girls, but it does accumulate with a faster rate in the postmenarcheal period so that girls who have an earlier menarche have a higher weight and BMI and greater skinfold thickness than those who enter the menarcheal stage at a later time, and that mental development and physical growth are parallel processes, so that a slower mental development would be expected when physical growth is delayed.