Cited by 50Muscle metabolism and nutritionSports Performance and TrainingThermoregulation and physiological responses

Ingestion of tyrosine: effects on endurance, muscle strength, and anaerobic performance

Sutton, Erin E., Coll, M. Regina, Deuster, Patricia A.·2005·International Journal of Sport Nutrition and Exercise Metabolism

Abstract

Acute tyrosine ingestion is thought to improve aerobic endurance, muscle strength and endurance, and anaerobic power of men undergoing severe physiologic stress. In a double-blind, crossover study, 20 men (32 +/- 1 y old) underwent 2 loadcarriage treadmill sessions, 1 after taking tyrosine (150 mg/ kg L-crystalline tyrosine) and 1 after taking placebo. Tyrosine dosage was based on subject weight and ingested 30 min before load carriage. A physical performance battery was administered after the load carriage: maximal and submaximal handgrip, pull-ups, and stair stepping with weight. Total time on treadmill was not significantly lengthened with ingestion of tyrosine (118.9 +/- 1.4 min) as compared with placebo (119.2 +/- 1.2 min). Total power for stair stepping (tyrosine 223 +/- 8 watts, placebo 216 +/- 9 watts) and muscle strength and endurance (handgrip) was not significantly improved by tyrosine ingestion. The results indicate that acute ingestion of tyrosine by healthy men has no measurable effect on endurance, muscle strength, or anaerobic power.

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Crossref · 10.1123/ijsnem.15.2.173

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29 of 29 references verified0 citation errors · 0 not checkable

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  • All seven studies that measured plasma tyrosine levels found significantly elevated levels after tyrosine intake compared to placebo.

    “All seven studies in which plasma tyrosine levels were measured (Strüder et al., 1998;Sutton et al., 2005;Shurtleff et al., 1994;Chinevere et al., 2002;Tumilty et al., 2011Tumilty et al., , 2014;;Watson et al., 2012) found these levels to be significantly elevated after tyrosine intake compared to placebo.”

    From Behavioral and cognitive effects of tyrosine intake in healthy human adults (2015) · cites this paper as Sutton et al., 2005

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Authors
Sutton, E. E., Coll, M. R., & Deuster, P. A.
Affiliations
Uniformed Services University of the Health Sciences (US)
Venue
International Journal of Sport Nutrition and Exercise Metabolism
Published
2005-04
Volume
15
Issue
2
Pages
173-185
ISSN
  • 1526-484X (ISSN-L)
  • 1543-2742
OpenAlex
W2151780364
Cited by
50
References
30
Citations by year
2025: 1 · 2024: 5 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 5 · 2019: 3 · 2018: 1 · 2017: 3 · 2016: 1 · 2015: 4 · 2014: 4 · 2013: 2 · 2012: 1
FWCI
1.21
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Sport Nutrition and Exercise Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
Office of Naval Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
Keywords
tyrosine supplementation, acute ingestion, endurance, muscle strength, anaerobic power, load carriage, treadmill running, grip strength, stair stepping, pull-ups, exercise performance, amino acid supplementation
MeSH terms
Adult, Double-Blind Method, Exercise Test, Humans, Male, Physical Endurance, Tyrosine, Weight Lifting, Anaerobic Threshold, Muscle, Skeletal, Cross-Over Studies, Hand Strength

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