Beverage carbohydrate concentration influences the intermittent endurance capacity of adolescent team games players during prolonged intermittent running
Item TypeJournal Article
MetadataShow full item record
This study investigated the influence of consuming a 2, 6, and 10% carbohydrate-electrolyte (CHO-E) solution on the intermittent endurance capacity and sprint performance of adolescent team games players. Seven participants (five males and two females; mean age 13.3 ± 0.5 years, height 1.71 ± 0.05 m, body mass (BM) 62.0 ± 6.3 kg) performed three trials separated by 3 to 7 days. In each trial, they completed four 15 min periods of part A of the Loughborough Intermittent Shuttle Test (LIST) followed by an intermittent run to exhaustion (part B). Participants consumed 5 ml.kg-1 BM of the solution during the 5 min pre-exercise period, and a further 2 ml.kg-1 BM every 15 min during part A of the LIST. Intermittent endurance capacity increased by 34% with ingestion of the 6% CHO-E solution compared with the 10% solution (5.5 ± 0.8 vs. 4.1 ± 1.5 min, P < 0.05), equating to a distance of 931 ± 172 vs. 706 ± 272 m (P < 0.05). There was no significant difference between the 2% (4.8 ± 1.2 min) and 6% (P = 0.10) or the 2% and 10% solutions (P = 0.09). Carbohydrate concentration did not significantly influence mean 15 m sprint time (P = 0.38). These results suggest that the carbohydrate concentration of an ingested solution influences the intermittent endurance capacity of adolescent team games players with a 6% solution significantly more effective than a 10% solution.
RightsThis is the author's final version of this article. Published version (c)Springer Verlag, available from http://dx.doi.org/10.1007/s00421-011-2065-2. The original publication is available at www.springerlink.com
The following license files are associated with this item: