Abstract

This study addressed the effect of a carbohydrate (CHO) beverage on anaerobic exercise performance (Wingate Anaerobic Test) among 11 healthy, well-trained male students using a double-blind randomized, cross-over placebo-controlled trial. Following a two-day loading period with CarboActive, (5 doses of 30 g / 200 ml water) the experimental CHO group outperformed the placebo group in total work (22670.9 ± 2503.9) vs 22123.6 ± 2390.2 Joule (p < 0.01); peak power (930.6 ± 139.3) vs 911.1 ± 137.8 Watt (p < 0.01); mean power (758.0 ± 83.2) vs 741.6 ± 86.2 Watt (p < 0.01); relative peak power (10.7 ± 0.9) vs 10.4 ± 0.9 Watt / kg (p < 0.01); relative mean power (8.8 ± 0.7) vs 8.6 ±0.6 Watt/kg (p < 0.05); the fatigue index (59.8 ± 8.1) vs 57.6 ± 8.9 % (p < 0.05); and 40 m sprint time (5.33 ± 0.33) vs 5.6 ± 0.50 seconds (p < 0.01). Similarly after a once-off CHO beverage ingestion (± 20 ml), the experimental group outperformed the placebo group on a subsequent test in total work (20360.5 ± 2736.1) vs 19050.9 ± 2013.4 Joule (p < 0.05); peak power (878.6 ± 140.8) vs 827.1 ± 84.5 Watt; mean power (658.2 ± 89.6) vs 654.4 ± 76.2 Watt; relative peak power (10.1 ± 0.8) vs 9.6 ± 1.0 Watt / kg; and the fatigue index (56.7 ± 11.4) vs 44.2 ± 7.9 % (p < 0.05). In conclusion, die CHO beverage was effective in enhancing performance and delaying fatigue during high-intensity anaerobic exercise when compared to a placebo. Verf.-Referat