Quick Answer
Ornithine Exercise Performance Randomized Trial has evidence relevant to safety, limits, and clinician-discussion contexts, but conclusions should stay close to the cited sources. One representative finding is: Moreover, tea catechin supplementation has been associated with improvements in aerobic capacity and exercise performance in humans (Ota et al.; Yamagami et al.,), although its relationship with ammonia metabolism remains unclear.
Key Takeaways
- 01Moreover, tea catechin supplementation has been associated with improvements in aerobic capacity and exercise performance in humans (Ota et al.; Yamagami et al.,), although its relationship with ammonia metabolism remains unclear. [Nagayama Chihiro (2025)]
- 02Where significant trial or trial-by-time interaction effects were found, the data were subsequently analyzed using post-hoc analysis and were adjusted for multiple comparisons using the Bonferroni method. [Nagayama Chihiro (2025)]
- 03Significant differences were found among trials in plasma total catechins, ornithine, citrulline, arginine, glutamic acid (all for < 0.0001) and glutamine ( = 0.009) concentrations measured during the whole experimental period. [Nagayama Chihiro (2025)]
- 042010 1983 1990 Ammonia is typically regarded as a toxic byproduct of amino acid metabolism and other nitrogenous compounds, and its efficient removal is crucial for maintaining physiological function (Wilkinson et al.). [Nagayama Chihiro (2025)]
The current Migaku evidence database contains 2 reusable source documents for Ornithine Exercise Performance Randomized Trial. This answer focuses on safety, limits, and clinician-discussion contexts.
- Moreover, tea catechin supplementation has been associated with improvements in aerobic capacity and exercise performance in humans (Ota et al.; Yamagami et al.,), although its relationship with ammonia metabolism remains unclear. [Nagayama Chihiro (2025); evidence level 2]
- Where significant trial or trial-by-time interaction effects were found, the data were subsequently analyzed using post-hoc analysis and were adjusted for multiple comparisons using the Bonferroni method. [Nagayama Chihiro (2025); evidence level 2]
- Significant differences were found among trials in plasma total catechins, ornithine, citrulline, arginine, glutamic acid (all for < 0.0001) and glutamine ( = 0.009) concentrations measured during the whole experimental period. [Nagayama Chihiro (2025); evidence level 2]
- 2010 1983 1990 Ammonia is typically regarded as a toxic byproduct of amino acid metabolism and other nitrogenous compounds, and its efficient removal is crucial for maintaining physiological function (Wilkinson et al.). [Nagayama Chihiro (2025); evidence level 2]
- Compared with traditional data-dependent acquisition (DDA) approaches, Zeno SWATH-DIA provided enhanced metabolite coverage, improved reproducibility, and reduced precursor selection bias (a statement of quantitation of how much more). [Hashmi MA (2026); evidence level 4]
Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording.
This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.
Sources
- The effects of acute and chronic oral tea catechins and ornithine supplementation on exercise-induced ammonia accumulation and cycling performance in healthy young men: a randomized, double-blind, cross-over, placebo-controlled trial
- Comprehensive Metabolomic Analysis of Saliva Using SWATH-DIA Reveals Systemic Metabolic Adaptations to Exercise.