Studies related to Oxygen Uptake and L-Tyrosine

Effects Of Tyrosine On Parkinson's Disease: A Randomized, Double-Blind, Placebo-Controlled Trial

Effect None
Values Exercise stress test change from rest to peak. VO2 mL/kg/min. Mean and SD Placebo: before 11.9 ± 5.0, after 11.7 ± 3.5. Tyrosine: before 13.0 ± 5.3, after 12.1 ± 4.6.
Trial Design Randomized trial
Trial Length 1-7 Days
Number of Subjects 40
Sex Both Genders
Notes for this study:
In a randomized, double-blind, placebo-controlled trial, 40 participants with Parkinson's Disease who were taking l-dopa took 1 g of tyrosine daily or placebo for 7 days.

Orthostatic hypertension wasn't statistically significantly different between groups. During an exercise test, there weren't any statistically significant differences in heart rate, blood pressure, VO2, or norepinephrine.