PMID- 24806836
OWN - NLM
STAT- MEDLINE
DCOM- 20151016
LR  - 20140821
IS  - 1536-4801 (Electronic)
IS  - 0277-2116 (Linking)
VI  - 59
IP  - 3
DP  - 2014 Sep
TI  - Effect of fat- and carbohydrate-rich diets on metabolism and running performance 
      in trained adolescent boys.
PG  - 380-5
LID - 10.1097/MPG.0000000000000427 [doi]
AB  - OBJECTIVES: A randomized crossover trial was designed to analyze the impact of a 
      short-term, isoenergetic fat-rich or carbohydrate (CHO)-rich diet on substrate 
      oxidation rates during submaximal exercise and on performance in a 10,000-m 
      running time trial in trained, mid- to late-pubertal boys. METHODS: An 
      incremental test was performed to determine the peak oxygen uptake (VO2peak). 
      After 2 days on a fat-rich (24.2% +/- 0.8% CHO, 60.4% +/- 0.3% fat, and 15.5% +/- 1.0% 
      protein), CHO-rich (69.3% +/- 1.2% CHO, 15.9% +/- 2.1% fat, and 15.1% +/- 1.1% 
      protein), or habitual (56.1% +/- 7.0% CHO, 27.5% +/- 4.9% fat, and 16.5% +/- 4.0% 
      protein) diet, 19 trained adolescent boys (15.2 +/- 1.5 years) performed a 
      10-minute constant run at 65% VO2peak to determine the respiratory exchange ratio 
      (RER) during exercise and 10,000-m running on an outdoor track. RESULTS: During 
      the constant run, the RER and CHO contribution to energy expenditure were lower, 
      and fat contribution higher, in the fat-rich diet than in the CHO-rich diet 
      (P < 0.05), but the results were not different from those of the habitual diet. 
      Performance in the 10,000-m run after consuming CHO- and fat-rich diets was 
      similar to performance after a habitual diet (50.0 +/- 7.0, 51.9 +/- 8.3, and 
      50.9 +/- 7.4 minutes, respectively), but consuming a CHO-rich diet enhanced 
      performance compared with that after a fat-rich diet (P = 0.03). CONCLUSIONS: 
      These findings indicate that a CHO-rich diet provides additional benefits to 
      10,000-m running performance in trained adolescent boys compared with a fat-rich 
      diet.
FAU - Guimaraes Couto, Patricia
AU  - Guimaraes Couto P
AD  - *Endurance Performance Research Group, School of Physical Education and Sport, 
      University of Sao Paulo, Sao Paulo daggerSport Science Research Group, Department of 
      Physical Education and Sports Science (CAV), Federal University of Pernambuco and 
      Federal University of Alagoas, Alagoas double daggerHuman Movement Studies Group, Physical 
      Education Department, Federal University of Lavras, Lavras, Brazil.
FAU - Marani Lima, Hessel
AU  - Marani Lima H
FAU - Pinheiro Soares, Ruda
AU  - Pinheiro Soares R
FAU - Bertuzzi, Romulo
AU  - Bertuzzi R
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
PL  - United States
TA  - J Pediatr Gastroenterol Nutr
JT  - Journal of pediatric gastroenterology and nutrition
JID - 8211545
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Dietary Fats)
SB  - IM
MH  - Adolescent
MH  - Athletic Performance/*physiology
MH  - Cross-Over Studies
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Dietary Fats/*administration & dosage
MH  - Energy Metabolism/*physiology
MH  - Exercise Test
MH  - Humans
MH  - Male
MH  - Oxygen Consumption
MH  - Pulmonary Gas Exchange/physiology
MH  - Running/*physiology
EDAT- 2014/05/09 06:00
MHDA- 2015/10/17 06:00
CRDT- 2014/05/09 06:00
PHST- 2014/05/09 06:00 [entrez]
PHST- 2014/05/09 06:00 [pubmed]
PHST- 2015/10/17 06:00 [medline]
AID - 10.1097/MPG.0000000000000427 [doi]
PST - ppublish
SO  - J Pediatr Gastroenterol Nutr. 2014 Sep;59(3):380-5. doi: 
      10.1097/MPG.0000000000000427.