Which peptides are studied in relation to lactate threshold?
A research-focused look at peptides and related compounds investigated for effects on lactate threshold, including NMN and other metabolic modulators, with study details and evidence levels.
Which peptides are studied in relation to lactate threshold?
In the research literature, the compound most directly studied in relation to lactate threshold is nicotinamide mononucleotide (NMN), a nucleotide rather than a peptide. NMN is the nicotinamide adenine dinucleotide (NAD⁺) precursor studied in a randomized, double-blind, placebo-controlled, two-arm crossover clinical trial in healthy older adults, where lactate threshold is listed as a secondary outcome alongside time to fatigue, peak oxygen consumption (VO₂peak), critical power, anaerobic work capacity, and NAD⁺ metabolite levels [1]. The trial evaluates a patented age-reversal therapy, EGA®, composed of three metabolomic compounds, compared to conventional NMN supplementation [1].
NMN is a naturally occurring nucleotide with the chemical formula C₁₁H₁₅N₂O₈P and a molecular weight of approximately 334.22 g/mol. It is not a peptide; it is a ribonucleotide. The work centres on the NAD⁺ salvage pathway, through which NMN is converted to NAD⁺, a coenzyme central to cellular energy metabolism. No peptide has been identified in the supplied evidence as being directly studied for lactate threshold effects. The broader supplement literature relevant to cycling performance focuses on ergogenic compounds that modulate skeletal muscle energy metabolism, particularly adenosine triphosphate (ATP) resynthesis during exercise [2].
Research Studies
NMN and lactate threshold in healthy older adults
A randomized, double-blind, placebo-controlled, two-arm crossover clinical trial is evaluating NMN supplementation for exercise tolerance improvement in healthy older adults [1]. The primary outcome is cycle ergometry constant work rate (CWR) exercise tolerance, measured as time to fatigue. Lactate threshold is a secondary outcome, along with changes in VO₂peak, critical power, anaerobic work capacity, and NAD⁺ metabolite levels [1]. The study compares a patented age-reversal therapy, EGA®, composed of three metabolomic compounds, to conventional NMN supplementation [1]. This is a registered clinical trial; results are not yet available in the evidence provided.
EGA® and exercise tolerance in healthy older adults
EGA® is described as a patented age-reversal therapy composed of three metabolomic compounds [1]. In the same trial, EGA® is compared to conventional NMN supplementation for effects on exercise tolerance and biomarkers of aging in healthy older adults [1]. Lactate threshold is among the secondary outcomes measured [1]. The trial is ongoing; no outcome data are reported in the evidence block.
Ergogenic supplements and skeletal muscle energy metabolism in cyclists
A comprehensive review of the physiology and evidence base for ergogenic and medical supplements in cycling performance reports that direct enhancement is primarily achieved via modulation of skeletal muscle energy metabolism [2]. During exercise, ATP resynthesis is a key process [2]. The review was informed by a structured literature search of PubMed, Scopus, and Web of Science for peer-reviewed studies published up to May 2025, including human participants and outcomes related to endurance performance, recovery, or physiological function [2]. Lactate threshold is not specifically named as an outcome in the excerpt provided, but the review covers physiological function relevant to endurance performance [2].
NAD⁺ metabolite levels and exercise outcomes
In the NMN trial, NAD⁺ metabolite levels are listed as a secondary outcome alongside lactate threshold and other exercise parameters [1]. This reflects research interest in the relationship between NAD⁺ metabolism and exercise tolerance. The evidence does not specify results for NAD⁺ metabolites or their correlation with lactate threshold [1].
VO₂peak, critical power, and anaerobic work capacity in NMN research
The NMN trial measures VO₂peak, critical power, and anaerobic work capacity as secondary outcomes [1]. These parameters are commonly assessed in endurance performance research. Lactate threshold is measured in the same trial [1]. No data are available in the evidence block to indicate effect sizes or statistical significance for any of these outcomes.
Comparison of NMN and EGA® in exercise tolerance research
The trial directly compares EGA® to conventional NMN supplementation [1]. Both arms are evaluated for safety and efficacy in improving exercise tolerance and modulating biomarkers of aging in healthy older adults [1]. Lactate threshold is a secondary outcome in both arms [1]. The evidence does not provide comparative results.
Human versus animal or in vitro evidence for lactate threshold compounds
The evidence block contains only human studies. The NMN trial is in healthy older adults [1]. The cycling supplement review includes only human participants [2]. No animal-only or in vitro studies are described in the supplied evidence. Therefore, no claims about animal or in vitro findings can be made here.
Table: Compounds and lactate threshold outcomes in the evidence
| Compound | Study type | Population | Lactate threshold as outcome? | Source |
|---|---|---|---|---|
| NMN | Randomized, double-blind, placebo-controlled, two-arm crossover clinical trial | Healthy older adults | Yes (secondary outcome) | [1] |
| EGA® | Randomized, double-blind, placebo-controlled, two-arm crossover clinical trial | Healthy older adults | Yes (secondary outcome) | [1] |
| Ergogenic supplements (general) | Comprehensive review | Human participants (cyclists) | Not specified in excerpt | [2] |
Peptides and lactate threshold: what the evidence does not show
The supplied evidence does not identify any peptide studied in relation to lactate threshold. NMN is a nucleotide, not a peptide [1]. The cycling supplement review discusses ergogenic supplements broadly but does not name peptides or lactate threshold specifically in the excerpt provided [2]. Researchers seeking peptide candidates for lactate threshold should note that the current evidence base, as represented here, centres on NAD⁺ precursors and other metabolic modulators rather than peptides.
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