PMID- 3569242
OWN - NLM
STAT- MEDLINE
DCOM- 19870612
LR  - 20190828
IS  - 0301-5548 (Print)
IS  - 0301-5548 (Linking)
VI  - 56
IP  - 3
DP  - 1987
TI  - The effects of dietary manipulation on blood acid-base status and the performance 
      of high intensity exercise.
PG  - 331-7
AB  - The effect of a pattern of exercise and dietary modification, which is normally 
      used to alter muscle glycogen content, upon the acid-base status of the blood and 
      the ability to perform high intensity exercise was studied. Eleven healthy male 
      subjects cycled to exhaustion on an electrically braked cycle ergometer at a 
      workload equivalent to 100% of their maximal oxygen uptake (VO2max) on three 
      separate occasions. The first exercise test took place after a normal diet (46.2 
      +/- 6.7% carbohydrate (CHO)), and was followed by prolonged exercise to 
      exhaustion to deplete muscle glycogen stores. The second test was performed after 
      three days of a low carbohydrate diet (10.1 +/- 6.8% CHO) and subsequently after 
      three days of a high CHO diet (65.5 +/- 9.8% CHO) the final test took place. 
      Acid-base status and selected metabolites were measured on arterialised venous 
      blood at rest prior to exercise and during the post-exercise period. Exercise 
      time to exhaustion was longer after the normal (p less than 0.05) and high (p 
      less than 0.05). CHO dietary phases compared with the low CHO phase. Resting 
      pre-exercise pH was higher after the high CHO diet (p less than 0.05) compared 
      with the low CHO diet. Pre-exercise bicarbonate, PCO2 and base excess 
      measurements were higher after the high CHO treatment compared with both the 
      normal (p less than 0.01, p less than 0.05, p less than 0.01 respectively) and 
      low CHO phases (p less than 0.001, p less than 0.01, p less than 0.001 
      respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
FAU - Greenhaff, P L
AU  - Greenhaff PL
FAU - Gleeson, M
AU  - Gleeson M
FAU - Maughan, R J
AU  - Maughan RJ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Germany
TA  - Eur J Appl Physiol Occup Physiol
JT  - European journal of applied physiology and occupational physiology
JID - 0410266
RN  - 0 (Bicarbonates)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Lactates)
SB  - IM
MH  - *Acid-Base Equilibrium
MH  - Adult
MH  - Bicarbonates/blood
MH  - Blood Physiological Phenomena
MH  - *Diet
MH  - Dietary Carbohydrates/administration & dosage
MH  - Humans
MH  - Hydrogen-Ion Concentration
MH  - Lactates/blood
MH  - Male
MH  - Oxygen Consumption
MH  - *Physical Exertion
MH  - Time Factors
EDAT- 1987/01/01 00:00
MHDA- 1987/01/01 00:01
CRDT- 1987/01/01 00:00
PHST- 1987/01/01 00:00 [pubmed]
PHST- 1987/01/01 00:01 [medline]
PHST- 1987/01/01 00:00 [entrez]
AID - 10.1007/BF00690901 [doi]
PST - ppublish
SO  - Eur J Appl Physiol Occup Physiol. 1987;56(3):331-7. doi: 10.1007/BF00690901.