Jayawardena Ranil, Punchihewa Pavani, Ranathunga Ishara, Lokunarangoda Niroshan, Pathirana Anidu Keerthi, Santharaj Wijeyasingam Samuel
Department of Physiology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka ; Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland Australia.
Institute of Cardiology, National Hospital of Sri Lanka, Colombo, Sri Lanka.
BMC Obes. 2016 Jul 4;3:32. doi: 10.1186/s40608-016-0113-5. eCollection 2016.
Misperception of body weight by individuals is a known occurrence. However, it is a potential target for implementing obesity reduction interventions in patients with cardiovascular and metabolic diseases. The aim of this study was to describe the association between self-perception of body weight and objectively measured body mass index (BMI) among cardiac patients in a specialist cardiology institution in Sri Lanka.
During the study period, 322 (61 %) males and 204 (39 %) females were recruited from consecutive admissions to the Institute of Cardiology, National Hospital, Colombo, Sri Lanka. An interviewer-administered questionnaire was used to assess demographic characteristics, medical records and body weight perception. Weight, height and waist circumference (WC) were measured and Asian anthropometric cut-off points for BMI and WC were applied.
The mean BMI of the study population was 23.61 kg/m(2). Body size misperception was seen in a significant proportion of the cohort. 85.2 % of overweight patients reported themselves to be of 'normal weight' or even 'underweight'. Moreover, 36 % of obese patients misperceived body weight as being of 'normal weight' while 10.9 % considered themselves to be 'underweight'. 61.9 % of males and 68.8 % of females with central obesity reported themselves to be 'underweight' or 'normal weight'. Among a subgroup with co-morbid metabolic diseases, significant under-perception of body size was seen.
Significant body size misperceptions were noted in this group of cardiac patients. The disparity of perception was seen increasingly with increasing BMI. More than two thirds of overweight and more than half of obese patients believed themselves to have normal or less than normal weight.
个体对体重的错误认知是一种常见现象。然而，这是对心血管和代谢疾病患者实施减肥干预措施的一个潜在目标。本研究的目的是描述在斯里兰卡一家专业心脏病学机构中，心脏病患者对体重的自我认知与客观测量的体重指数（BMI）之间的关联。
在研究期间，从斯里兰卡科伦坡国立医院心脏病研究所连续入院的患者中招募了322名（61%）男性和204名（39%）女性。采用由访谈员管理的问卷来评估人口统计学特征、病历和体重认知。测量体重、身高和腰围（WC），并应用亚洲人BMI和WC的人体测量切点。
研究人群的平均BMI为23.61kg/m²。该队列中有相当一部分人存在体型认知错误。85.2%的超重患者报告自己体重“正常”甚至“体重过轻”。此外，36%的肥胖患者将体重错误认知为“正常体重”，而10.9%的患者认为自己“体重过轻”。61.9%的中心性肥胖男性和68.8%的中心性肥胖女性报告自己“体重过轻”或“正常体重”。在患有合并代谢疾病的亚组中，存在明显的体型认知不足。
在这组心脏病患者中发现了明显的体型认知错误。随着BMI的增加，认知差异越来越明显。超过三分之二的超重患者和超过一半的肥胖患者认为自己体重正常或低于正常。
