New Functional Beverage Influences Power during a 30s Wingate Test

Abstract

A new product (JustBIO Inc, CA) has been shown to allow ATP resynthesis that may be promising to sustain exercise endurance. PURPOSE: Measure the effect of three different beverage formulations (JustBIO, Inc.) on power deployed during a 30s Wingate test. METHODS: Participants were randomly assigned to 3 groups: group A (n = 9; 4F 5H; 27±4 years), group B (n = 9; 4F 5H; 28±7 years) and group C (n = 9; 4F 5H, 27±5 years). The participants were asked to consume 5 beverages assigned to their group 1 per day beginning four days preceding the event and one hour before the 30s Wingate test. Beverages A, B and C contained, respectively: a blueberry concentrate; a blueberry concentrate with a biological extract; and a beverage (without blueberry) containing a biological extract that accelerated ATP release. The study was conducted as double blind. All participants performed a Wingate test without consuming the beverages. After one week and after consuming their respective beverages all participants performed two other Wingate tests with a one week interval between tests. One way ANOVA analysis was performed for the various measured parameters. RESULTS: The peak power (W/kg) obtained for the C group for three sessions (7.91±1.5, 7.45±1.86, 7.65±1.54) were significantly higher (p <0.05) than in group B (7.20±1.44, 7.1±1.32, 7.22±1.00), but no significant difference was observed for those in group A (7.22±1.2; 7.72±1.33, 7.3±0.73). The average power (W/kg) for group C (5.53±1.11, 5.64±1.44, 5.90±1.27) was significantly higher (p <0.05) than group A (5.24 ±0.97, 5.43±0.81, 5.24±0.65), but not for group B (5.38±0.96, 5.55±1.06, 5.51±0.84). In addition, a relative improvement (%) of the maximum power as a function of sessions 2 and 3 (consumption of juice) from the session 1 (without juice consumption) showed a significant difference (p <0.05 and p <0.01 respectively) with group C (93.3±11.77, 96.06±11.38), group A (102.63±9.77; 101.97±7.84) and B (104.21±21.21, 106.29±36.64). CONCLUSIONS: The blueberry Juice (A and B) seems to improve the average power (significantly different from C, group without blueberry) when the groups are normalised to their initial performance in the absence of a juice consumption. It seems that blueberry extract helps to maintain power.