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Applying an eMASS Customization Program as a Research Tool to Evaluate Consumer Benefits
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Performance enhancement with supplements: incongruence between rationale and practice.

Andrea Petróczi1, Declan P Naughton, Jason Mazanov

  • 1School of Life Sciences, Faculty of Science, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey, KT1 2EE, UK. a.petroczi@kingston.ac.uk.

Journal of the International Society of Sports Nutrition
|November 14, 2007
PubMed
Summary

Athletes often lack understanding regarding nutritional supplement use, with weak evidence linking their reasons for use to actual choices. Accurate information is crucial for informed decision-making in sports nutrition.

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Area of Science:

  • Sports Science
  • Nutritional Biochemistry
  • Exercise Physiology

Background:

  • Athletes must consider supplement efficacy, rules, and health risks for informed decisions.
  • Performance enhancement is a primary concern for athletes using nutritional supplements.
  • Investigating the link between supplement use motives and actual intake is vital.

Purpose of the Study:

  • To examine the relationship between performance-related reasons for supplement use and reported supplement intake in athletes.
  • To assess the congruence between athletes' stated motivations and their actual nutritional supplement choices.
  • To identify potential gaps in athletes' understanding of supplement efficacy.

Main Methods:

  • Re-analysis of the 'UK Sport 2005 Drug Free Survey' data (n = 874).
  • Utilized chi-squared andvarphi tests to evaluate associations between supplement use and reasons.
  • Assessed the proportion of informed choices and incongruencies in supplement use motives.

Main Results:

  • Commonly reported supplements include vitamin C, creatine, whey protein, iron, caffeine, and ginseng.
  • Primary reported reasons for use were strength maintenance, doctor's advice, and enhancing endurance.
  • Weak associations were found between most supplement use reasons and actual intake, with notable exceptions for creatine and whey protein linked to strength and training duration.

Conclusions:

  • A significant lack of understanding exists regarding the efficacy and appropriate use of nutritional supplements among athletes.
  • The congruence between athletes' reasons for supplement use and their actual choices is often weak.
  • There is an urgent need for educational interventions to provide athletes with accurate information for informed supplement decisions.