Use of dietary supplements among gym trainees in Tanta city, Egypt.
BACKGROUND
The use of dietary supplements has greatly increased in the past few years. Few studies described the prevalence of supplement use among gym trainees. The practices of most of the athletes and gym trainees in Egypt remain undocumented. This study aimed to assess the prevalence of dietary supplement use among gyms trainees in Tanta city, Egypt.


METHODS
A cross-sectional comparative study was carried out on 450 gym trainees aged more than or equal to 20 years in Tanta city, Egypt. Nine representative gyms (50 participants from each) were recruited in the study. Data on sociodemographic characteristics, health and lifestyle characteristics, type, underlying motive(s), and source(s) of information about dietary supplements were collected from each participant.


RESULTS
Of the 450 participants, 38.2% reported using dietary supplements. Male participants and those with higher family incomes used dietary supplements more than female participants and those with lower family incomes (P<0.05). Female participants used vitamins/minerals, weight loss, and natural groups of dietary supplements more than male participants (P<0.05), whereas male participants used body-building group of supplements more than female participants (P<0.05). Participants of older ages (≥30) tended to use the natural group of dietary supplements more than younger ones (P<0.05). Female participants were more motivated to use dietary supplements for the prevention of nutritional and/or medical problems and for weight loss, whereas male participants used dietary supplements for muscle building/repair (P<0.05). Female participants mostly got their information about dietary supplements from health professionals and from the media more than male participants, whereas male participants got this information mainly from gym personnel.


CONCLUSIONS
A considerable proportion of gym trainees use dietary supplements, mostly without professional consultation and frequently without any indication. It is very important to disseminate accurate information on these products in the sports environment.
aDepartment of Public Health and Community Medicine, Faculty of Medicine bDepartment of Exercise and Sports Show, Faculty of Physical Education, Tanta University, Tanta, Egypt.
Ehab A
EA
Abo Ali
Hanan H
HH
Elgamal
D000328:Adult; D017677:Age Distribution; D056352:Athletes / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D019587:Dietary Supplements / Q000706:statistics & numerical data*; D004534:Egypt; D015444:Exercise; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D010809:Physical Fitness; D017678:Sex Distribution; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D055815:Young Adult