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Jeong JE, Park HK, Hwang HS, Park KY, Lee MH, Shin SH, Choi N. Body mass index and prevalence of metabolic syndrome among Korean adults before and after the COVID-19 outbreak: a retrospective longitudinal study. Epidemiol Health 2023; 45:e2023081. [PMID: 37654163 PMCID: PMC10728615 DOI: 10.4178/epih.e2023081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/18/2023] [Indexed: 09/02/2023] Open
Abstract
OBJECTIVES Studies evaluating weight changes during the coronavirus disease 2019 (COVID-19) pandemic have yielded inconsistent results, and most of those studies were based on self-reported anthropometric measures. We investigated changes in body mass index (BMI), professionally measured waist circumference (WC), and metabolic syndrome components from before to during the pandemic in a sample of the adult population in Korea. METHODS This retrospective study included 1,118 male and female (age≥18 years) who underwent health checkups at a university medical center between January 1, 2016 and March 31, 2022. Changes in BMI, lifestyles, and metabolic syndrome components during the pandemic were analyzed using the paired t-test, McNemar test, generalized estimating equations, and repeated-measures analysis of variance. RESULTS Changes in body weight, BMI, and body fat percentage during the pandemic were not clinically significant. However, statistically significant results were found for decreased physical activity (p<0.001) and WC (p<0.001), and exacerbation of all metabolic syndrome components (except serum triglyceride levels). Moreover, the metabolic syndrome prevalence increased significantly from 20.2% to 31.2% during the pandemic (p<0.001). The prevalence of abdominal obesity and high fasting blood glucose levels also significantly increased from 2019 to 2021. CONCLUSIONS Metabolic syndrome, its components, and fat distribution worsened significantly after the implementation of social distancing and lockdowns, despite no clinically significant changes in body weight and BMI. Further studies on the post- pandemic period should investigate the long-term impact of social lockdowns on BMI and the prevalence of metabolic syndrome.
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Affiliation(s)
- Joo-Eun Jeong
- Department of Family Medicine, Hanyang University College of Medicine, Seoul, Korea, Seongdong-gu, Korea
| | - Hoon-Ki Park
- Department of Family Medicine, Hanyang University College of Medicine, Seoul, Korea, Seongdong-gu, Korea
| | - Hwan-Sik Hwang
- Department of Family Medicine, Hanyang University College of Medicine, Seoul, Korea, Seongdong-gu, Korea
| | - Kye-Yeung Park
- Department of Family Medicine, Hanyang University College of Medicine, Seoul, Korea, Seongdong-gu, Korea
| | - Myoung-Hye Lee
- Department of Family Medicine, Hanyang University College of Medicine, Seoul, Korea, Seongdong-gu, Korea
| | - Seon-Hi Shin
- Biostatistical Consulting and Research Lab, Medical Research Collaborating Center, Hanyang University, Seoul, Korea
| | - Nayeon Choi
- Biostatistical Consulting and Research Lab, Medical Research Collaborating Center, Hanyang University, Seoul, Korea
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Yang N, Zhuo J, Xie S, Qu Z, Li W, Li Z, Guo P, Gao M, Qin H, Han T. A Body Shape Index and Its Changes in Relation to All-Cause Mortality among the Chinese Elderly: A Retrospective Cohort Study. Nutrients 2023; 15:2943. [PMID: 37447269 DOI: 10.3390/nu15132943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/17/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Although recent evidence has revealed that a body shape index (ABSI) is correlated with the incidence of death among different ethnicities, there remains a paucity of studies investigating the impact of ABSI on mortality within the Chinese elderly. Our objective was to ascertain the link between ABSI, as well as its alterations over time, and all-cause mortality among Chinese aged 65 y and above. A total of 3789 participants were enrolled from the Chinese Longitudinal Healthy Longevity Survey (CLHLS). Cox regressions and restricted cubic splines were employed to assess the association of ABSI and relative changes with all-cause mortality. When nonlinearity was detected, a restricted cubic spline regression was subsequently conducted to compute hazard ratios and 95% confidence intervals. The median survival time was 46 months, and 1342 individuals (35.4%) were reported to have died. ABSI contributed independently to rising death rates among Chinese old populations according to univariate and multivariate Cox regressions. Statistically significant associations were also found stratified by age, sex, and lifestyle. A U-shaped association of ABSI changes with all-cause mortality (p = 0.027) was observed, indicating that old adults with stable ABSI during the follow-up period experienced the lowest risk of mortality. After multivariable adjustment, participants with a 10% reduction in ABSI changes had an increased 9.4% risk of death, while participants with a 10% rise in ABSI changes had an increased 1.9% risk. ABSI and its changes are predictors for all-cause mortality among the elderly Chinese population, which emphasizes the clinical importance of monitoring ABSI and keeping it stable over time.
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Affiliation(s)
- Ning Yang
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Jialu Zhuo
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Suyi Xie
- Department of Medicine and Therapeutics, the Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
- Laboratory for Heart Failure + Circulation Research, Li Ka Shing Institute of Health Sciences, Gerald Choa Cardiac Research Centre, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong, China
| | - Zhihua Qu
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Wei Li
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Zixiang Li
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Panpan Guo
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Mingbo Gao
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Huanlong Qin
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
| | - Ting Han
- Department of Clinical Nutrition, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
- Shanghai Clinical Nutrition Quality Control Center, Shanghai Tenth People's Hospital, Tongji University of Medicine, 301 Yanchang Road, Shanghai 200072, China
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