Anaerobic power responses to amino acid nutritional supplementation.
To examine the effect of a nutritional supplement (ATP-E) on high intensity exercise performance, 23 physically active males volunteered to perform six Wingate Anaerobic Power tests. Tests were performed prior to and at 14 and 21 days during ATP-E or placebo ingestion. The experiment followed a double-blind and random-order design. Twelve subjects (responders, R) showed an increase in preexercise blood ATP on Day 14 of ATP-E ingestion compared to control measures. The remaining 11 subjects (nonresponders, NR) had no change in preexercise blood ATP. Peak power and mean power were unchanged for both R and NR subjects across the exercise tests, but R experienced a decrease (p < 0.05) in immediate post-exercise plasma lactate on Day 14 of ATP-E testing compared to their control measures. NR had no change in peak plasma lactate at any time during the study. The results suggest that short-term high intensity exercise performance was maintained in R with less reliance on anaerobic metabolism, and that response was evident following 14 days of ATP-E ingestion.
Maresh
C M
CM
Dept. of Sport, Leisure, and Exercise Sciences, University of Connecticut, Storrs 06269-1110.
Gabaree
C L
CL
Hoffman
J R
JR
Hannon
D R
DR
Deschenes
M R
MR
Armstrong
L E
LE
Abraham
A
A
Bailey
F E
FE
Kraemer
W J
WJ
D000255:Adenosine Triphosphate / Q000097:blood; D000328:Adult; D000596:Amino Acids / Q000008:administration & dosage*; D000693:Anaerobiosis; D004044:Dietary Proteins / Q000008:administration & dosage; D004311:Double-Blind Method; D004906:Erythrocyte Count; D015444:Exercise / Q000502:physiology*; D006801:Humans; D007773:Lactates / Q000097:blood; D019344:Lactic Acid; D008297:Male; D009747:Nutritional Physiological Phenomena; D010953:Plasma Volume; D010976:Platelet Count
D000596:Amino Acids; D004044:Dietary Proteins; D007773:Lactates; D019344:Lactic Acid; D000255:Adenosine Triphosphate