Studies related to Reaction Time and L-Tyrosine

Dietary Tyrosine Benefits Cognitive And Psychomotor Performance During Body Cooling

Effect None
Values Complex Reaction Time, % correct. Mean and SD. Control: 91 ± 11 Placebo: 89 ± 9.8 Tyrosine: 89 ± 13.5 Time (s). Control: 0.38 ± 0.06 Placebo: 0.40 ± 0.06 Tyrosine: 0.41 ± 0.07
Trial Design Non-randomized controlled trial
Trial Length 24 hours
Number of Subjects 15
Sex Both Genders
Notes for this study:
In a double-blind, controlled trial with unclear randomization, 15 participants took 300 mg/kg of tyrosine or placebo on separate days, before performing cognitive and military psychomotor tests in warm or cold conditions.

When taking tyrosine, participants say less of impairment than control for match-to-sample accuracy and less of a slowing of response time for addition/subtraction. There weren't notable differences for grip strength, pull-ups, steps, or cycling.

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