School of Pharmacy, Department of Food Science, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
Nutrition. 2010 Jun;26(6):604-11. doi: 10.1016/j.nut.2009.06.021. Epub 2009 Dec 8.
To assess supplement intake in people who exercise regularly in gyms in the city of Belo Horizonte, Brazil, and discuss the influencing factors on its ingestion.
A total of 1102 enrolled subjects who exercised in 50 gyms throughout the city were part of this cross-sectional study. Men and women were recruited and all subjects were at least 18 y old. Participants were asked to complete written questionnaires about their use of supplements. Data were collected over a period of 4 mo. Descriptive statistics and chi-square tests were performed.
The intake of nutritional supplements was reported by 36.8% of participants. The highest intake was in men (44.6%). Five products were consumed almost daily: those rich in proteins and amino acids (58%), isotonic drinks (32%), those rich in carbohydrates (23%), natural/phytotherapeutic (20%), and multivitamin/mineral supplements (19%). Most people (55%) reported using nutritional supplements without any specialized professional guidance and based primarily on self-prescription. Individuals younger than 30 y, mainly men (odds ratio 3.28, 95% confidence interval 2.06-5.20, P < 0.01), took supplements rich in proteins (odds ratio 2.73, 95% confidence interval 1.26-5.94, P < 0.05). In contrast, older participants reported taking supplements rich in multivitamin/minerals and natural/phytotherapeutic agents (odds ratio 5.52, 95% confidence interval 2.76-11.06, P < 0.01).
Our results show that supplement intake in people exercising in gyms is high and is usually self-prescribed. We emphasize that the use of dietary supplements must be always done under the supervision of a specialist (physician or nutritionist).
评估巴西贝洛奥里藏特市健身房中经常锻炼人群的补充剂摄入情况，并探讨影响其摄入的因素。
共有 1102 名在全市 50 家健身房锻炼的受试者参与了这项横断面研究。招募了男性和女性，所有受试者年龄均至少为 18 岁。要求参与者填写关于补充剂使用情况的书面问卷。数据收集时间为 4 个月。进行描述性统计和卡方检验。
36.8%的参与者报告摄入了营养补充剂。男性的摄入量最高（44.6%）。有 5 种产品几乎每天都被食用：富含蛋白质和氨基酸的产品（58%）、等渗饮料（32%）、富含碳水化合物的产品（23%）、天然/植物疗法产品（20%）和多种维生素/矿物质补充剂（19%）。大多数人（55%）在没有任何专业指导的情况下，主要根据自我处方使用营养补充剂。年龄小于 30 岁的人，主要是男性（优势比 3.28，95%置信区间 2.06-5.20，P < 0.01），服用富含蛋白质的补充剂（优势比 2.73，95%置信区间 1.26-5.94，P < 0.05）。相比之下，年龄较大的参与者报告服用富含多种维生素/矿物质和天然/植物疗法的补充剂（优势比 5.52，95%置信区间 2.76-11.06，P < 0.01）。
我们的结果表明，在健身房锻炼的人群中，补充剂的摄入量较高，通常是自我处方。我们强调，必须在专家（医生或营养师）的监督下使用膳食补充剂。
