Quick Answer
Ornithine Exercise Performance Randomized Trial has evidence relevant to strength of evidence and what the studies can or cannot prove, 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 strength of evidence and what the studies can or cannot prove.
- 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.