Caffeine Consumption Amongst British Athletes Following Changes to the 2004 WADA Prohibited List

Abstract

This study was undertaken to examine self-reported caffeine consumption and reasons for its use, amongst UK athletes, following its removal from the 2004 World Anti-Doping Agency (WADA) Prohibited List. A convenience sample of track and field athletes (n = 193) and cyclists (n = 287) completed a postal or Web-based questionnaire. Messages were posted on athletics and cycling club Web sites and mailing lists to direct athletes to the Web-based questionnaire. Postal questionnaires were distributed at domestic sporting events. A higher proportion of cyclists (59.9 %) compared with track and field athletes (32.6 %) consumed caffeine to enhance performance (p < 0.001). A higher proportion of elite as opposed to sub-elite athletes representing cycling (p = 0.031) and athletics (p = 0.010) used caffeine to enhance performance. Of all caffeine containing products used, coffee, energy drinks, pharmaceutical preparations and caffeinated sports supplements were most prevalent. Results revealed that amongst UK athletes, the intention to use caffeine as an ergogenic aid was high, and that use was more widespread and accepted in competitive sport, especially at elite level, when compared to recreational sport.

Key words

anti‐doping - ergogenic aids - monitoring program - questionnaires - web‐based surveys

References

• 1 Bell D G, Jacobs I, Ellerington K. Effect of caffeine and ephedrine ingestion on anaerobic exercise performance.  Med Sci Sports Sci. 2001;  33 1399-1403
• 2 Bruce C R, Anderson M E, Fraser S F, Stepto N K, Klein R, Hopkins W G, Hawley J A. Enhancement of 2000-m rowing performance after caffeine ingestion.  Med Sci Sports Exerc. 2000;  32 1958-1963
• 3 Buchanan T, Smith J L. Using the Internet for psychological research: personality testing on the World Wide Web.  Br J Psychol. 1999;  90 125-144
• 4 Collomp K, Ahmaidi S, Chatard J C, Audran M, Prefaut C. Benefits of caffeine ingestion on sprint performance in trained and untrained swimmers.  Eur J Appl Physiol. 1992;  64 377-380
• 5 Delbeke F T, Debackere M. Caffeine: use and abuse in sports.  Int J Sports Med. 1984;  5 179-182
• 6 Desbrow B, Leveritt M. Awareness and use of caffeine by athletes competing at the 2005 Ironman Triathlon World Championships.  Int J Sports Nutr Exerc Metab. 2006;  16 545-558
• 7 Doherty M, Smith P M, Hughes M G, Davison R. Caffeine lowers perceptual response and increases power output during high-intensity cycling.  J Sports Sci. 2004;  22 637-643
• 8 Dunagen N, Greenleaf J E, Cisar C J. Thermoregulatory effects of caffeine ingestion during submaximal exercise in men.  Aviat Space Environ Med. 1998;  69 1178-1181
• 9 Field A. Discovering Statistics Using SPSS. London; SAGE Publications 2005
• 10 Graham T E. Caffeine and exercise: metabolism, endurance and performance.  Sports Med. 2001;  31 785-807
• 11 Graham T E, Spriet L L. Metabolic, catecholamine and exercise performance responses to varying doses of caffeine.  J Appl Physiol. 1995;  78 867-874
• 12 Greer F, Friars D, Graham T E. Comparison of caffeine and theophylline ingestion: exercise metabolism and endurance.  J Appl Physiol. 2000;  89 1837-1844
• 13 Greer F, McLean C, Graham T E. Caffeine, performance, and metabolism during repeated Wingate exercise tests.  J Appl Physiol. 1998;  85 1502-1508
• 14 Institute of Grocery Distribution .The UK café market. (accessed 09/01/07) http://www.igd.com/CIR.asp?menuid=67 . 
• 15 Jackman M, Wendling P, Friars D, Graham T E. Metabolic, catecholamine and endurance responses to caffeine during intense exercise.  J Appl Physiol. 1996;  81 1658-1663
• 16 Juhn M S. Popular sports supplements and ergogenic aids.  Sports Med. 2003;  33 921-939
• 17 MacIntosh B R, Wright B M. Caffeine ingestion and performance of a 1,500-metre swim.  Can J Appl Physiol. 1995;  20 168-177
• 18 Maughan R J, King D S, Lea T. Dietary supplements.  J Sports Sci. 2004;  22 95-113
• 19 Pasman W J, van Baak M A, Jeukendrup A E, de Haan A. The effect of different dosages of caffeine on endurance performance time.  Int J Sports Med. 1995;  16 225-230
• 20 Paton C D, Hopkins W G, Vollebregt L. Little effect of caffeine ingestion on repeated sprints in team-sport athletes.  Med Sci Sports Exerc. 2001;  33 822-825
• 21 Perry P J, Lund B C, Deninger M J, Kutscher E C, Schneider J. Anabolic steroid use in weightlifters and bodybuilders: an Internet survey of drug utilization.  Clin J Sports Med. 2005;  15 326-330
• 22 Ritter P, Lorig K, Laurent D, Matthews K. Internet versus mailed questionnaires: a randomized comparison.  J Med Internet Res. 2004;  6 e29
• 23 Van Thuyne W, Delbeke F T. Distribution of caffeine levels in urine in different sports in relation to doping control before and after the removal of caffeine from the WADA doping list.  Int J Sports Med. 2006;  27 745-750
• 24 Wemple R D, Lamb D R, McKeever K H. Caffeine vs. caffeine-free sports drinks: effect on urine production at rest and during prolonged exercise.  Int J Sports Med. 1997;  18 40-46
• 25 World Anti-Doping Agency . Policy into Practice.  Play True. 2003;  3 3-6
• 26 Zenith International .West Europe energy drinks 2006 (accessed 09/01/07) http://www.nutraingredients.com/marketreport/results.asp?catName= .