Sports Medicine Research: In the Lab & In the Field: Muscle-enhancing Behaviors among Adolescent Girls and Boys (Sports Med Res)


Friday, January 25, 2013

Muscle-enhancing Behaviors among Adolescent Girls and Boys

Muscle-enhancing Behaviors Among Adolescent Girls and Boys

Eisenberg ME, Wall M, Neumark-Sztainer D. Pediatrics. 2012 Dec;130(6):1019-26. doi: 10.1542/peds.2012-0095. Epub 2012 Nov 19.

With the emphasis that is placed on sport and performance in today's society, there is no doubt that adolescents are engaging in muscle building behaviors. With the potential to earn a collegiate scholarship, it's also not out of the question that some of these adolescents might be looking to gain muscle and strength by pursuing less healthy means.  In addition, socio-cultural factors may be impacting adolescents’ body image, forcing many young females to engage in muscle enhancing activities to promote leanness and muscle tone.  However, it remains unknown which demographics are engaging in either the healthy or unhealthy tactics, and to what degree.  Therefore, the purpose of this study was to examine the prevalence of five muscle building behaviors in male and female adolescents across various races, weight status, socio-economic status (measured by parents education level) and sport team involvement.  For this study 2793 adolescents (mean age 14.4 y/o) from 20 different urban middle (grades 6-8) and high (grades 9-12) schools were surveyed using the 2010 Eating and Activity in Teens survey, and their height and weight were measured by the research staff.  The Eating and Activity in Teens 2010 survey is a 235-item self-report assessing factors possibly related to weight status and weight related behaviors in adolescents.  For this study questions from previous surveys were adapted to address muscle building behaviors.  The participants were asked how often they performed the following muscle enhancing behaviors over the past year (never, rarely, sometimes, or often).  The questions included (a) “Changed my eating”, (b) “Exercised more”, (c) “Used protein powder or shakes”, (d) “Used anabolic steroids”, (e) ”Used another muscle building substance” (creatine, amino acids, DHEA, growth hormone).  Based on those questions, behavioral changes (a) and (b) were deemed to be the healthy options while (c), (d), and (e) were deemed the unhealthy options.  These behaviors were common in both boys and girls but especially prevalent in boys.  More than 2/3 of boys reported changing their eating habits (12% performed often) to help promote muscle growth while more than 90% reported exercising more (41% performed often).  Within the unhealthy activities protein usage was reported by 35% of respondents, 6% reported using anabolic steroids and 11% reported using other substances.  Responses showed that nearly 65% of girls surveyed reported changing their eating habits and over 80% have exercised more.  Girls also utilized protein supplementation (21%), anabolic steroid usage (5%) and “other substances” (6%). Boys (12%) and girls (6%) both admitted to using 3 or more of the muscle-enhancing behaviors.  Furthermore, 61% of boys and 41% of girls from a low socio-economic status admitted to using 3 or more of the techniques while 37% and 30% of these male and female respondents admitted to using anabolic steroids.  Also of note, participants with average body mass index were more prone to use anabolic steroids (24% and 37% male to female) and utilizing 3 or more of the muscle enhancing techniques (64% to 46% male to female).

This study does a nice job of illustrating that there is anabolic steroid use in an adolescent female population.  With so much pressure to compete for scholarships and to meet the socio-cultural beauty standards, it stands to reason that anabolic steroid use in females would be prevalent.  Furthermore the results show that the bulk of respondents came from lower socio-economic statuses.  This was done intentionally by the authors because it is an area that has often been looked over.  The utilization of these muscle-enhancing techniques, by both boys and girls, may possibly be seen as a means to earning a college scholarship, as way to offset college tuition or as the only possible way to attend college.  With this information available, the authors believe that targeted interventions by pediatricians and school physicals may be a way to properly educate adolescents and their families about proper muscle enhancement.  What are your thoughts on this study?  Are you surprised by the results? Is it alarming to you that children as young as 11 or 12 years old are consuming protein supplements, injecting anabolic steroids or utilizing creatine in order to add muscle mass? What are you seeing in your athletes and what form of steps have you taken to help educate the students, their families and administrators?

Written by:  Mark Rice
Reviewed by:  Stephen Thomas

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Eisenberg ME, Wall M, & Neumark-Sztainer D (2012). Muscle-enhancing Behaviors Among Adolescent Girls and Boys. Pediatrics, 130 (6), 1019-26 PMID: 23166333


Anonymous said...

I think in our culture in the U.S as well as China,Russia, and other sports driven nations these numbers don't surprise me. After all we happen to be in a race to be the bigger,faster,stronger nation in the world so every little bit of help is welcome. But I wonder how much of a difference the numbers would be if they had done a separate cross cultural study in a 3rd world country that had more things to worry in life than just sports.

Anonymous said...

The results of this study didn't surprise me much because of how our society promotes that you have to be fit and strong to be good at sports and be seen to be the star of the game. Which we all know is not totally true because practice and yes strength training will make you the best. Now, the surprising part was just how young. I work at a school as an extend care teacher and I work with kids from the age of 3 to 14 years old. I can't imagine my children that are in 5th and 6th grade using protein supplement to help enhance their muscles. They are still children that have high metabolisms. That have lots of energy to do all the activates without help.

Jess Schlesman said...

I found this article to be very surprising. I knew that supplement use was becoming more and more popular however I didn't realize the large number of athletes that are using. The demand for athletes to bulk up has been increasing because competition is growing harder and with education costs, parents push for athletic scholarships. I think coaches, parents, and the fitness world in general is the reason athletes feel pressured to bulk up and maintain a certain body image.

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