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Relationship between body mass index and early menarche of adolescent girls in Seoul.

Oh CM, Oh IH, Choi KS, Choe BK, Yoon TY, Choi JM - J Prev Med Public Health (2012)

Bottom Line: The BMI at the age of 8 and 9 was associated with the early menarche of girls and increase in BMI from 7 to 8 year was associated with the early menarche of girls.These results suggest that BMI and increase in BMI before menarche cause early menarche.Although this study does not represent all Korean adolescent girls, it is one of the few studies that have investigated the temporal relationship between BMI and early menarche.

View Article: PubMed Central - PubMed

Affiliation: Department of Preventive Medicine, Kyung Hee University School of Medicine, Seoul, Korea.

ABSTRACT

Objectives: The object of this study was to determine the relationship between body mass index (BMI) and early menarche in adolescent girls in Seoul.

Methods: A retrospective study was conducted with 144 middle school students in Seoul who provided informed consent. We measured their body composition, and used the questionnaire survey method for data collection from November to December 2008. Past elemental body composition data were collected from elementary school health records of first year of middle school.

Results: The early menarcheal group was taller and heavier than the late menarcheal group (p<0.05 from 8-12 years old). The body fat percentage (%), BMI were higher in the early menarcheal girls than the late-menarcheal girls (p<0.05, age at 13). In the result of multiple logistic regression, the BMI at the age of 8 and 9 was associated with early menarche after adjusting for birth weight, breast feeding and age at menarche of the mother (BMI at the age of 8: p for trend=0.01, BMI at the age of 9: p for trend=0.04). An increase in BMI from 7 to 8 year was associated with early menarche after adjusting for birth weight, breast feeding, age at menarche of the mother (p for trend=0.048).

Conclusions: The BMI at the age of 8 and 9 was associated with the early menarche of girls and increase in BMI from 7 to 8 year was associated with the early menarche of girls. These results suggest that BMI and increase in BMI before menarche cause early menarche. Although this study does not represent all Korean adolescent girls, it is one of the few studies that have investigated the temporal relationship between BMI and early menarche.

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Related in: MedlinePlus

Longitudinal change of body mass index (BMI) according to timing of menarche for 7 years. There was a significant difference of increase rate of BMI between early menarcheal group (age at menarche <12 year) and late menarcheal group (age at menarche ≥12 year or who had yet to experience it) (p for interaction=0.02). All data were expressed as mean±SD.
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Figure 1: Longitudinal change of body mass index (BMI) according to timing of menarche for 7 years. There was a significant difference of increase rate of BMI between early menarcheal group (age at menarche <12 year) and late menarcheal group (age at menarche ≥12 year or who had yet to experience it) (p for interaction=0.02). All data were expressed as mean±SD.

Mentions: There was a significant interaction between the menarcheal group and time indicating significant difference trends across the groups (p=0.02) (Figure 1). The regression coefficient for increased BMI of the late menarche group was 0.73. Meanwhile, the regression coefficient for increased BMI of the early menarche group was 0.90, indicating that BMI of the early menarcheal group increased faster than that of the late menarcheal group.


Relationship between body mass index and early menarche of adolescent girls in Seoul.

Oh CM, Oh IH, Choi KS, Choe BK, Yoon TY, Choi JM - J Prev Med Public Health (2012)

Longitudinal change of body mass index (BMI) according to timing of menarche for 7 years. There was a significant difference of increase rate of BMI between early menarcheal group (age at menarche <12 year) and late menarcheal group (age at menarche ≥12 year or who had yet to experience it) (p for interaction=0.02). All data were expressed as mean±SD.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC3412985&req=5

Figure 1: Longitudinal change of body mass index (BMI) according to timing of menarche for 7 years. There was a significant difference of increase rate of BMI between early menarcheal group (age at menarche <12 year) and late menarcheal group (age at menarche ≥12 year or who had yet to experience it) (p for interaction=0.02). All data were expressed as mean±SD.
Mentions: There was a significant interaction between the menarcheal group and time indicating significant difference trends across the groups (p=0.02) (Figure 1). The regression coefficient for increased BMI of the late menarche group was 0.73. Meanwhile, the regression coefficient for increased BMI of the early menarche group was 0.90, indicating that BMI of the early menarcheal group increased faster than that of the late menarcheal group.

Bottom Line: The BMI at the age of 8 and 9 was associated with the early menarche of girls and increase in BMI from 7 to 8 year was associated with the early menarche of girls.These results suggest that BMI and increase in BMI before menarche cause early menarche.Although this study does not represent all Korean adolescent girls, it is one of the few studies that have investigated the temporal relationship between BMI and early menarche.

View Article: PubMed Central - PubMed

Affiliation: Department of Preventive Medicine, Kyung Hee University School of Medicine, Seoul, Korea.

ABSTRACT

Objectives: The object of this study was to determine the relationship between body mass index (BMI) and early menarche in adolescent girls in Seoul.

Methods: A retrospective study was conducted with 144 middle school students in Seoul who provided informed consent. We measured their body composition, and used the questionnaire survey method for data collection from November to December 2008. Past elemental body composition data were collected from elementary school health records of first year of middle school.

Results: The early menarcheal group was taller and heavier than the late menarcheal group (p<0.05 from 8-12 years old). The body fat percentage (%), BMI were higher in the early menarcheal girls than the late-menarcheal girls (p<0.05, age at 13). In the result of multiple logistic regression, the BMI at the age of 8 and 9 was associated with early menarche after adjusting for birth weight, breast feeding and age at menarche of the mother (BMI at the age of 8: p for trend=0.01, BMI at the age of 9: p for trend=0.04). An increase in BMI from 7 to 8 year was associated with early menarche after adjusting for birth weight, breast feeding, age at menarche of the mother (p for trend=0.048).

Conclusions: The BMI at the age of 8 and 9 was associated with the early menarche of girls and increase in BMI from 7 to 8 year was associated with the early menarche of girls. These results suggest that BMI and increase in BMI before menarche cause early menarche. Although this study does not represent all Korean adolescent girls, it is one of the few studies that have investigated the temporal relationship between BMI and early menarche.

Show MeSH
Related in: MedlinePlus