PMID- 12218744
OWN - NLM
STAT- MEDLINE
DCOM- 20021209
LR  - 20190901
IS  - 0195-9131 (Print)
IS  - 0195-9131 (Linking)
VI  - 34
IP  - 9
DP  - 2002 Sep
TI  - Effects of short-term fat adaptation on metabolism and performance of prolonged 
      exercise.
PG  - 1492-8
AB  - The concept of manipulating an individuals habitual diet before an exercise bout 
      in an attempt to modify patterns of fuel substrate utilization and enhance 
      subsequent exercise capacity is not new. Modern studies have focused on 
      nutritional and training strategies aimed to optimize endogenous carbohydrate 
      (CHO) stores while simultaneously maximizing the capacity for fat oxidation 
      during continuous, submaximal (60-70% of maximal O(2) uptake [(.)VO(2max)] 
      exercise. Such "nutritional periodization" typically encompasses 5-6 d of a 
      high-fat diet (60-70% E) followed by 1-2 d of high-CHO intake (70-80% E; CHO 
      restoration). Despite the brevity of the adaptation period, ingestion of a 
      high-fat diet by endurance-trained athletes results in substantially higher rates 
      of fat oxidation and concomitant muscle glycogen sparing during submaximal 
      exercise compared with an isoenergetic high-CHO diet. Higher rates of fat 
      oxidation during exercise persist even under conditions in which CHO availability 
      is increased, either by having athletes consume a high-CHO meal before exercise 
      and/or ingest glucose solutions during exercise. Yet, despite marked changes in 
      the patterns of fuel utilization that favor fat oxidation, fat-adaptation/CHO 
      restoration strategies do not provide clear benefits to the performance of 
      prolonged endurance exercise.
FAU - Burke, Louise M
AU  - Burke LM
AD  - Department of Sports Nutrition, Australian Institute of Sport, PO Box 176, 
      Belconnen, A.C.T. 2616, Australia. louise.burke@ausport.gov.au
FAU - Hawley, John A
AU  - Hawley JA
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PT  - Review
PL  - United States
TA  - Med Sci Sports Exerc
JT  - Medicine and science in sports and exercise
JID - 8005433
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Dietary Fats)
RN  - 9005-79-2 (Glycogen)
SB  - IM
MH  - *Adaptation, Physiological
MH  - Dietary Carbohydrates/administration & dosage/metabolism/*pharmacology
MH  - Dietary Fats/administration & dosage/metabolism/*pharmacology
MH  - Exercise/physiology
MH  - Glycogen/metabolism
MH  - Humans
MH  - Oxidation-Reduction
MH  - Oxygen Consumption
MH  - Physical Endurance/*physiology
MH  - Time Factors
RF  - 35
EDAT- 2002/09/10 10:00
MHDA- 2002/12/10 04:00
CRDT- 2002/09/10 10:00
PHST- 2002/09/10 10:00 [pubmed]
PHST- 2002/12/10 04:00 [medline]
PHST- 2002/09/10 10:00 [entrez]
AID - 10.1097/00005768-200209000-00015 [doi]
PST - ppublish
SO  - Med Sci Sports Exerc. 2002 Sep;34(9):1492-8. doi: 
      10.1097/00005768-200209000-00015.