PMID- 1452948
OWN - NLM
STAT- MEDLINE
DCOM- 19930107
LR  - 20190907
IS  - 0731-5724 (Print)
IS  - 0731-5724 (Linking)
VI  - 11
IP  - 5
DP  - 1992 Oct
TI  - Plasma amino acid responses of trained athletes to two successive exhaustion 
      trials with and without interim carbohydrate feeding.
PG  - 501-11
AB  - The purpose of this research was to measure changes in selected plasma amino 
      acids (AA) during two successive exercise trials to exhaustion. Eleven trained 
      male athletes completed these trials at weeks 4, 6, 8 and 12. Blood samples for 
      each test were collected after a 12-hour fast at times (in minutes) 0 (Resting), 
      45, 90, 135, 180, at exhaustion (EI), after a 20-minute recovery period, and at 
      the second exhaustion (EII). At the end of EI, subjects consumed an artificially 
      sweetened water replacement (placebo) treatment or a carbohydrate (CHO) 
      replacement (1.1 g CHO/kg BW) in order to determine any effect of CHO replacement 
      on changes in energy substrates or AA, adjusted for plasma volume changes. From 
      baseline to EI, alpha-aminobutyric acid, alanine, glycine, isoleucine, serine, 
      valine threonine, and tyrosine decreased significantly (p less than or equal to 
      0.05), while taurine increased significantly. During the recovery period 
      following EI, isoleucine, leucine, ornithine, phenylalanine, tyrosine, urea and 
      valine increased significantly. From the end of recovery until EII, alanine, 
      aspartic acid, glycine, isoleucine, leucine, ornithine, phenylalanine, serine, 
      threonine, tyrosine and valine decreased significantly. CHO replacement had no 
      effect on the mean change scores for any AA from EI to the end of the recovery 
      period and affected only serine, citrulline, glycine and threonine from the end 
      of the recovery period to EII.
FAU - Bazzarre, T L
AU  - Bazzarre TL
AD  - Department of Nutrition, University of North Carolina-Greensboro.
FAU - Murdoch, S D
AU  - Murdoch SD
FAU - Wu, S M
AU  - Wu SM
FAU - Herr, D G
AU  - Herr DG
FAU - Snider, I P
AU  - Snider IP
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Am Coll Nutr
JT  - Journal of the American College of Nutrition
JID - 8215879
RN  - 0 (Amino Acids)
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Fatty Acids)
RN  - 0 (Lactates)
RN  - 33X04XA5AT (Lactic Acid)
SB  - IM
MH  - Adolescent
MH  - Adult
MH  - Amino Acids/*blood
MH  - Blood Glucose/analysis
MH  - Dietary Carbohydrates/*pharmacology
MH  - Fatty Acids/blood
MH  - Humans
MH  - Lactates/blood
MH  - Lactic Acid
MH  - Male
MH  - Physical Exertion/*physiology
MH  - Rest/physiology
EDAT- 1992/10/01 00:00
MHDA- 1992/10/01 00:01
CRDT- 1992/10/01 00:00
PHST- 1992/10/01 00:00 [pubmed]
PHST- 1992/10/01 00:01 [medline]
PHST- 1992/10/01 00:00 [entrez]
AID - 10.1080/07315724.1992.10718254 [doi]
PST - ppublish
SO  - J Am Coll Nutr. 1992 Oct;11(5):501-11. doi: 10.1080/07315724.1992.10718254.