Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls
Abstract Background Peak bone mass accrual occurs during adolescence, a time when dieting and related eating behaviors are common. Impaired bone mineral accrual is a known consequence of eating disorders in adolescents, but the effects of subclinical dieting behaviors on bone mineral content (BMC) h...
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| Format: | Article |
| Language: | English |
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BMC
2018-11-01
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| Series: | BMC Public Health |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12889-018-6206-y |
| _version_ | 1818858842325254144 |
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| author | Emily E. Hohman Katherine N. Balantekin Leann L. Birch Jennifer S. Savage |
| author_facet | Emily E. Hohman Katherine N. Balantekin Leann L. Birch Jennifer S. Savage |
| author_sort | Emily E. Hohman |
| collection | DOAJ |
| description | Abstract Background Peak bone mass accrual occurs during adolescence, a time when dieting and related eating behaviors are common. Impaired bone mineral accrual is a known consequence of eating disorders in adolescents, but the effects of subclinical dieting behaviors on bone mineral content (BMC) have not been described in this age group. The goal of this analysis was to determine whether dieting behavior in preadolescence and adolescence is associated with bone mineral accrual in adolescent girls. Methods Non-Hispanic white girls (n = 139) were followed in a longitudinal cohort study. BMC was assessed at ages 9 and 15y. Dieting to lose weight was reported every 2 years, and dietary restraint and disinhibition, eating attitudes, weight concerns, and body esteem were assessed at age 11y. Girls were classified as “early dieters” if they first dieted by age 11y (31.7%), “adolescent dieters” if they first dieted after 11y (46.8%), or non-dieters if they did not report dieting by 15 y (21.6%). The effect of dieting related variables on BMC at 15y and change in BMC from 9 to 15y was assessed using linear regression, controlling for height, weight, BMI, physical activity, and pubertal status. Results Girls who first reported dieting to lose weight by age 11y had a 4.2% lower bone mineral accrual across adolescence (p = 0.02) and 3.1% lower BMC at age 15y (p = 0.005) than girls who first reported dieting after 11y or not at all. Number of weight control behaviors used, dietary restraint, and weight concerns were also negatively associated with BMC (p < 0.05). Conclusions Dieting behavior in preadolescence is associated with reduced bone mineral accrual. Strategies to promote optimal bone development should include prevention of dieting. Trial registration Clinicaltrials.gov NCT03342430, November 17, 2017. Retrospectively registered. |
| first_indexed | 2024-12-19T09:02:43Z |
| format | Article |
| id | doaj.art-f8c7ef1f58994a8284b6788ca7b32952 |
| institution | Directory Open Access Journal |
| issn | 1471-2458 |
| language | English |
| last_indexed | 2024-12-19T09:02:43Z |
| publishDate | 2018-11-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Public Health |
| spelling | doaj.art-f8c7ef1f58994a8284b6788ca7b329522022-12-21T20:28:26ZengBMCBMC Public Health1471-24582018-11-0118111010.1186/s12889-018-6206-yDieting is associated with reduced bone mineral accrual in a longitudinal cohort of girlsEmily E. Hohman0Katherine N. Balantekin1Leann L. Birch2Jennifer S. Savage3Center for Childhood Obesity Research, The Pennsylvania State UniversityDepartment of Exercise and Nutrition Sciences, University at BuffaloDepartment of Foods and Nutrition, The University of GeorgiaCenter for Childhood Obesity Research and Department of Nutritional Sciences, The Pennsylvania State UniversityAbstract Background Peak bone mass accrual occurs during adolescence, a time when dieting and related eating behaviors are common. Impaired bone mineral accrual is a known consequence of eating disorders in adolescents, but the effects of subclinical dieting behaviors on bone mineral content (BMC) have not been described in this age group. The goal of this analysis was to determine whether dieting behavior in preadolescence and adolescence is associated with bone mineral accrual in adolescent girls. Methods Non-Hispanic white girls (n = 139) were followed in a longitudinal cohort study. BMC was assessed at ages 9 and 15y. Dieting to lose weight was reported every 2 years, and dietary restraint and disinhibition, eating attitudes, weight concerns, and body esteem were assessed at age 11y. Girls were classified as “early dieters” if they first dieted by age 11y (31.7%), “adolescent dieters” if they first dieted after 11y (46.8%), or non-dieters if they did not report dieting by 15 y (21.6%). The effect of dieting related variables on BMC at 15y and change in BMC from 9 to 15y was assessed using linear regression, controlling for height, weight, BMI, physical activity, and pubertal status. Results Girls who first reported dieting to lose weight by age 11y had a 4.2% lower bone mineral accrual across adolescence (p = 0.02) and 3.1% lower BMC at age 15y (p = 0.005) than girls who first reported dieting after 11y or not at all. Number of weight control behaviors used, dietary restraint, and weight concerns were also negatively associated with BMC (p < 0.05). Conclusions Dieting behavior in preadolescence is associated with reduced bone mineral accrual. Strategies to promote optimal bone development should include prevention of dieting. Trial registration Clinicaltrials.gov NCT03342430, November 17, 2017. Retrospectively registered.http://link.springer.com/article/10.1186/s12889-018-6206-yEating behaviorDietingChildrenAdolescenceBone |
| spellingShingle | Emily E. Hohman Katherine N. Balantekin Leann L. Birch Jennifer S. Savage Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls BMC Public Health Eating behavior Dieting Children Adolescence Bone |
| title | Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls |
| title_full | Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls |
| title_fullStr | Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls |
| title_full_unstemmed | Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls |
| title_short | Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls |
| title_sort | dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls |
| topic | Eating behavior Dieting Children Adolescence Bone |
| url | http://link.springer.com/article/10.1186/s12889-018-6206-y |
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