PMID- 8889116
OWN - NLM
STAT- MEDLINE
DCOM- 19970130
LR  - 20190503
IS  - 0306-3674 (Print)
IS  - 1473-0480 (Electronic)
IS  - 0306-3674 (Linking)
VI  - 30
IP  - 3
DP  - 1996 Sep
TI  - Effects of alterations in dietary carbohydrate intake on running performance 
      during a 10 km treadmill time trial.
PG  - 226-31
AB  - OBJECTIVE: To examine the influence of a seven day diet manipulation on 
      performance during a 10 km treadmill time trial in trained runners. METHODS: Six 
      trained runners ran two 10 km time trials on a treadmill set at a constant 4% 
      gradient, each after a 7 d period of dietary manipulation. The two experimental 
      diets were a low carbohydrate (CHO) diet (40% CHO by total energy) to be consumed 
      for 7 d, and a high CHO diet containing 55% CHO for the first 4 d followed by 70% 
      CHO for the remaining 3 d. Blood samples were obtained before and immediately 
      after each run. Expired gases were collected and heart rate monitored. RESULTS: 
      Performance time following the high CHO [48.6(SD 2.7) min] and low CHO [48.6(2.3) 
      min] diets was not different (P = 0.72), nor were there any differences in 
      running speed between conditions. No significant differences were found between 
      conditions in any of the metabolites measured (blood lactate, glucose, glycerol, 
      and plasma free fatty acids). The rate of CHO oxidation was greater on the high 
      CHO diet compared to the low CHO diet (P < 0.05). Heart rate was not different 
      between conditions. CONCLUSIONS: The results of this study indicate that moderate 
      changes in the composition of the diet do not affect 10 km running performance in 
      trained subjects.
FAU - Pitsiladis, Y P
AU  - Pitsiladis YP
AD  - Department of Environmental and Occupational Medicine, University Medical School, 
      Aberdeen, United Kingdom.
FAU - Duignan, C
AU  - Duignan C
FAU - Maughan, R J
AU  - Maughan RJ
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Br J Sports Med
JT  - British journal of sports medicine
JID - 0432520
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Fatty Acids, Nonesterified)
RN  - 0 (Hemoglobins)
RN  - 0 (Lactates)
RN  - 142M471B3J (Carbon Dioxide)
RN  - PDC6A3C0OX (Glycerol)
SB  - IM
MH  - Adult
MH  - Blood Glucose/analysis
MH  - Carbon Dioxide/analysis
MH  - Dietary Carbohydrates/*administration & dosage/pharmacology
MH  - Energy Intake
MH  - Exercise Test
MH  - Fatty Acids, Nonesterified/blood
MH  - Glycerol/blood
MH  - Heart Rate
MH  - Hemoglobins/analysis
MH  - Humans
MH  - Lactates/blood
MH  - Male
MH  - Oxidation-Reduction
MH  - Oxygen Consumption
MH  - Psychomotor Performance/drug effects
MH  - Running/education/*physiology
MH  - Spirometry
PMC - PMC1332336
EDAT- 1996/09/01 00:00
MHDA- 1996/09/01 00:01
PMCR- 1996/09/01
CRDT- 1996/09/01 00:00
PHST- 1996/09/01 00:00 [pubmed]
PHST- 1996/09/01 00:01 [medline]
PHST- 1996/09/01 00:00 [entrez]
PHST- 1996/09/01 00:00 [pmc-release]
AID - 10.1136/bjsm.30.3.226 [doi]
PST - ppublish
SO  - Br J Sports Med. 1996 Sep;30(3):226-31. doi: 10.1136/bjsm.30.3.226.