TY - JOUR
T1 - Beverage carbohydrate concentration influences the intermittent endurance capacity of adolescent team games players during prolonged intermittent running
AU - Phillips, Shaun M.
AU - Turner, Anthony P.
AU - Sanderson, Mark F.
AU - Sproule, John
PY - 2012/3
Y1 - 2012/3
N2 - 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.
AB - 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.
U2 - 10.1007/s00421-011-2065-2
DO - 10.1007/s00421-011-2065-2
M3 - Article
VL - 112
SP - 1107
EP - 1116
JO - Internationale Zeitschrift für Angewandte Physiologie Einschließlich Arbeitsphysiologie
JF - Internationale Zeitschrift für Angewandte Physiologie Einschließlich Arbeitsphysiologie
SN - 1439-6319
IS - 3
ER -