Ji Tong, Zhang Li, Tang Zhe, Sun Fei, Li Yun, Ma Lina
Department of Geriatrics, Xuanwu Hospital, Capital Medical University, China National Clinical Research Center for Geriatric Medicine, Beijing 100053, People's Republic of China.
Beijing Geriatric Healthcare Center, Xuanwu Hospital, Capital Medical University, Beijing Institute of Geriatrics, Beijing 100053, People's Republic of China.
Diabetes Metab Syndr Obes. 2020 May 12;13:1611-1617. doi: 10.2147/DMSO.S246884. eCollection 2020.
Normal-weight obesity (NWO) is characterized by high body fat percentage (BFP) in individuals with normal body mass index (BMI). This condition may increase the risk of serious health problems, such as cardiovascular diseases, diabetes, insulin resistance, hypertension, and metabolic syndrome. However, the prevalence of NWO in older adults in Beijing remains unclear. This study aimed to investigate the prevalence of overweight and obesity among older adults in Beijing, using three obesity assessment indicators: BMI, waist circumference, and BFP.
Cross-sectional study.
Data were obtained from the 2012 Beijing Longitudinal Study of Aging, which used a stratified, sectional, random, and cluster sampling method.
Questionnaires, physical examinations, and laboratory tests were completed. Obesity was divided into four categories based on combinations of BMI and BFP: non-obese, muscle-type obesity, NWO and fatty obesity.
A total of 2393 community-dwelling older adults with an average age of 72.98±8.09 years old were recruited. Of them, 1051 were male (43.92%) and 1245 were living in rural areas (52.03%). The prevalence of overweight and obesity among older people in Beijing was 35.5% and 16.1%, respectively. When the sample was divided according to obesity classification, the proportion of muscular obesity, NWO and adipose obesity was 14.7%, 10.7%, and 41.8%, respectively. The prevalence of central obesity was 62.3%. The prevalence of obesity decreased with age, but it was higher in females than in males as well as among individuals living in urban areas than in individuals living in rural areas.
The prevalence of NWO was 10.7% among older adults in Beijing and increased with age. Older adults who are female or living in urban areas should be instructed to take measures aimed at reducing body fat and increasing muscle strength.
正常体重肥胖（NWO）的特征是身体质量指数（BMI）正常的个体具有较高的体脂百分比（BFP）。这种情况可能会增加患严重健康问题的风险，如心血管疾病、糖尿病、胰岛素抵抗、高血压和代谢综合征。然而，北京老年人中NWO的患病率仍不清楚。本研究旨在使用BMI、腰围和BFP这三个肥胖评估指标，调查北京老年人中超重和肥胖的患病率。
横断面研究。
数据来自2012年北京老龄化纵向研究，该研究采用分层、分段、随机和整群抽样方法。
完成问卷调查、体格检查和实验室检测。根据BMI和BFP的组合，肥胖分为四类：非肥胖、肌肉型肥胖、NWO和脂肪型肥胖。
共招募了2393名社区居住的老年人，平均年龄为72.98±8.09岁。其中，男性1051名（43.92%），1245名居住在农村地区（52.03%）。北京老年人中超重和肥胖的患病率分别为35.5%和16.1%。当根据肥胖分类对样本进行划分时，肌肉型肥胖、NWO和脂肪型肥胖的比例分别为14.7%、10.7%和41.8%。中心性肥胖的患病率为62.3%。肥胖患病率随年龄增长而降低，但女性高于男性，城市地区居民高于农村地区居民。
北京老年人中NWO的患病率为10.7%，且随年龄增长而增加。应指导女性或居住在城市地区的老年人采取措施减少体脂并增加肌肉力量。
