Document Detail

Intake of nutritional supplements among people exercising in gyms and influencing factors.
MedLine Citation:
PMID:  20004078     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: 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. METHODS: 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. RESULTS: 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). CONCLUSION: 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).
Janaina Lavalli Goston; Maria Isabel Toulson Davisson Correia
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Publication Detail:
Type:  Journal Article     Date:  2009-12-08
Journal Detail:
Title:  Nutrition (Burbank, Los Angeles County, Calif.)     Volume:  26     ISSN:  1873-1244     ISO Abbreviation:  Nutrition     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-05-10     Completed Date:  2010-10-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8802712     Medline TA:  Nutrition     Country:  United States    
Other Details:
Languages:  eng     Pagination:  604-11     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier Inc. All rights reserved.
School of Pharmacy, Department of Food Science, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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MeSH Terms
Age Factors
Aged, 80 and over
Biological Products / administration & dosage*
Cross-Sectional Studies
Diet Surveys
Dietary Carbohydrates / administration & dosage
Dietary Proteins / administration & dosage
Dietary Supplements / utilization*
Health Behavior*
Micronutrients / administration & dosage
Middle Aged
Odds Ratio
Phytotherapy / utilization
Self Care*
Sex Factors
Young Adult
Reg. No./Substance:
0/Biological Products; 0/Dietary Carbohydrates; 0/Dietary Proteins; 0/Micronutrients

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