The contribution of diet, physical activity and sedentary behaviour to body mass index in women with and without polycystic ovary syndrome

被引:122
作者
Moran, L. J. [1 ,2 ]
Ranasinha, S. [1 ]
Zoungas, S. [1 ]
McNaughton, S. A. [3 ]
Brown, W. J. [4 ]
Teede, H. J. [1 ,5 ]
机构
[1] Monash Univ, Sch Publ Hlth & Prevent Med, Clayton, Vic 3168, Australia
[2] Univ Adelaide, Robinson Inst, Discipline Obstet & Gynaecol, Adelaide, SA 5006, Australia
[3] Deakin Univ, Sch Exercise & Nutr Sci, Ctr Phys Act & Nutr Res, Melbourne, Vic 3125, Australia
[4] Univ Queensland, Sch Human Movement Studies, Brisbane, Qld 4072, Australia
[5] Southern Hlth, Diabet Unit, Clayton, Vic 3168, Australia
基金
澳大利亚研究理事会; 澳大利亚国家健康与医学研究理事会;
关键词
polycystic ovary syndrome; dietary intake; physical activity; sedentary behaviour; body mass index; INSULIN-RESISTANCE; OBESITY; QUALITY; RISK; THERMOGENESIS; PREVALENCE; OVERWEIGHT; EXERCISE; YOUNG;
D O I
10.1093/humrep/det256
中图分类号
R71 [妇产科学];
学科分类号
100211 [妇产科学];
摘要
What is the contribution of diet, physical activity and sedentary behaviour to body mass index (BMI) in women with and without polycystic ovary syndrome (PCOS)? PCOS status, higher energy intake and glycaemic index and lower physical activity were independently associated with BMI. Obesity worsens the clinical features of PCOS and women with PCOS have an elevated prevalence of overweight and obesity. It is not known whether there is a contribution of lifestyle factors such as dietary intake, physical activity or sedentary behaviour to the elevated prevalence of obesity in PCOS. This study is a population-based observational study with data currently collected at 13 year follow-up. The study commenced in 1996. For this analysis, data are analysed at one time point corresponding to the Survey 5 of the cohort in 2009. At this time 8200 participants remained (58 retention of baseline participants) of which 7466 replied to the questionnaire; 409 self-reported a diagnosis of PCOS and 7057 no diagnosis of PCOS. Australian women born in 19731978 from the Australian Longitudinal Study on Womens Health. Mean BMI was higher in women with PCOS compared with non-PCOS (29.3 7.5 versus 25.6 5.8 kg/m(2), P 0.001). Women with PCOS reported a better dietary intake (elevated diet quality and micronutrient intake and lower saturated fat and glycaemic index intake) but increased energy intake, increased sitting time and no differences in total physical activity compared with non-PCOS. PCOS status, higher energy intake and glycaemic index and lower physical activity, as well as age, smoking, alcohol intake, occupation, education and country of birth, were independently associated with BMI. The weaknesses of this study include the self-reported diagnosis of PCOS, and the women not reporting PCOS not having their control status clinically verified which is likely to underrepresent the PCOS population. We are also unable to determine if lifestyle behaviours contributed to the PCOS diagnosis or were altered in response to diagnosis. The strengths of this study include the community-based nature of the sample which minimizes selection bias to include women with a variety of clinical presentations. These results are therefore generalizable to a broader population than the majority of research in PCOS examining this research question which are performed in clinic-based populations. This study is in agreement with the literature that PCOS is independently associated with elevated BMI. We provide new insights that diet quality is subtly improved but that sedentary behaviour is elevated in PCOS and that PCOS status, higher energy intake and glycaemic index and lower physical activity are independently associated with BMI. L.J.M. was supported by a South Australian Cardiovascular Research Development Program (SACVRDP) Fellowship (AC11S374); a program collaboratively funded by the National Heart Foundation of Australia, the South Australian Department of Health and the South Australian Health and Medical Research Institute, S.A.M. was funded by an Australian Research Council Future Fellowship (FT100100581), S.Z. was funded by a Heart Foundation Career Development Fellowship (ID CR10S5330) and H.J.T. was funded by an NHMRC fellowship (ID 545888). None of the authors has any conflict of interest to declare. Not applicable.
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收藏
页码:2276 / 2283
页数:8
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