Caffeinated Chewing Gum Improves Bicycle Motocross Time-Trial Performance

in International Journal of Sport Nutrition and Exercise Metabolism
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  • 1 University of Canterbury
  • 2 Jacksonville State University
  • 3 Charles Darwin University
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This study aimed to identify the acute effects of caffeinated chewing gum (CAF) on bicycle motocross (BMX) time-trial (TT) performance. In a randomized, placebo-controlled, double-blind cross-over design, 14 male BMX riders (age = 20.0 ± 3.3 years; height = 1.78 ± 0.04 m; body mass = 72 ± 4 kg), consumed either (300 mg; 4.2 ± 0.2 mg/kg) caffeinated (300 mg caffeine, 6 g sugars) or a placebo (0 mg caffeine, 0 g sugars) gum, and undertook three BMX TTs. Repeated-measure analysis revealed that CAF has a large ergogenic effect on TT time, F(1, 14) = 33.570, p = .001, ηp2=.71; −1.5% ± 0.4 compared with the placebo. Peak power and maximal power to weight ratio also increased significantly compared with the placebo condition, F(1, 14) = 54.666, p = .001, ηp2=.79; +3.5% ± 0.6, and F(1, 14) = 57.399, p = .001, ηp2=.80; +3% ± 0.3, respectively. Rating of perceived exertion was significantly lower F(1, 14) = 25.020, p = .001, ηp2=.64 in CAF (6.6 ± 1.3) compared with the placebo (7.2 ± 1.7). Administering a moderate dose (300 mg) of CAF could improve TT time by enhancing power and reducing the perception of exertion. BMX coaches and riders may consider consuming CAF before a BMX race to improve performance and reduce rating of perceived exertion.

Daneshfar and Petersen are with the School of Health Sciences, University of Canterbury, Christchurch, New Zealand. Koozehchian is with the Department of Kinesiology, Jacksonville State University, Jacksonville, AL, USA. Gahreman is with the College of Health & Human Sciences, Charles Darwin University, Darwin, NT, Australia.

Daneshfar (amindaneshfar11@gmail.com) is corresponding author.
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