PMID- 25902552 OWN - NLM STAT- MEDLINE DCOM- 20160603 LR - 20150903 IS - 1543-2920 (Electronic) IS - 0899-8493 (Linking) VI - 27 IP - 3 DP - 2015 Aug TI - High Carbohydrate Diet Induces Faster Final Sprint and Overall 10,000-m Times of Young Runners. PG - 355-63 LID - 10.1123/pes.2014-0211 [doi] AB - This study analyzed the pacing employed by young runners in 10,000 m time-trials under 3 dietary regimens of different carbohydrate (CHO) intakes. Nineteen boys (13-18 years) ate either their normal CHO diet (56% CHO), high (70% CHO), or low (25% CHO) CHO diets for 48 hr; the boys then performed a 10,000 m run (crossover design). The high CHO diet led to faster final sprint (14.4 +/- 2.2 km.h(-)(1)) and a better performance (50.0 +/- 7.0 min) compared with the low CHO diet (13.3 +/- 2.4 km.h(-)(1) and 51.9 +/- 8.3 min, respectively, p < .05). However, the final sprint and performance time in the high CHO or low CHO diets were statistically not significantly different from the normal CHO diet (13.8 +/- 2.2 km.h(-)(1) and 50.9 +/- 7.4 min; p > .05). CHO oxidation rate during the constant load exercise at 65% of VO2max was elevated in high CHO diet (1.05 +/- 0.38 g.min(-)(1)) compared with low CHO diet (0.63 +/- 0.36 g.min(-)(1)). The rating of perceived exertion increased linearly throughout the trial, independently of the dietary regimen. In conclusion, the high CHO diet induced higher CHO oxidation rates, increased running speed in the final 400 m and enhanced overall running performance, compared with low CHO. FAU - Couto, Patricia Guimaraes AU - Couto PG AD - School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil. FAU - Bertuzzi, Romulo AU - Bertuzzi R FAU - de Souza, Carla Caroline AU - de Souza CC FAU - Lima, Hessel Marani AU - Lima HM FAU - Kiss, Maria Augusta Peduti Dal Molin AU - Kiss MA FAU - de-Oliveira, Fernando Roberto AU - de-Oliveira FR FAU - Lima-Silva, Adriano Eduardo AU - Lima-Silva AE LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20150422 PL - United States TA - Pediatr Exerc Sci JT - Pediatric exercise science JID - 8909729 RN - 0 (Dietary Carbohydrates) SB - IM MH - Adolescent MH - Athletic Performance/*physiology MH - Cross-Over Studies MH - Dietary Carbohydrates/*administration & dosage MH - Energy Intake MH - Exercise Test MH - Heart Rate MH - Humans MH - Male MH - Oxygen Consumption MH - Physical Exertion MH - Pulmonary Gas Exchange MH - Running/*physiology EDAT- 2015/04/23 06:00 MHDA- 2016/06/04 06:00 CRDT- 2015/04/23 06:00 PHST- 2015/04/23 06:00 [entrez] PHST- 2015/04/23 06:00 [pubmed] PHST- 2016/06/04 06:00 [medline] AID - 2014-0211 [pii] AID - 10.1123/pes.2014-0211 [doi] PST - ppublish SO - Pediatr Exerc Sci. 2015 Aug;27(3):355-63. doi: 10.1123/pes.2014-0211. Epub 2015 Apr 22.