Does NMN Have Potential as an Exercise Supplement?
As public enthusiasm for physical exercise surges, sports nutrition supplements have garnered growing attention, and nicotinamide mononucleotide (NMN) has come into sight among fitness enthusiasts.
As the direct precursor to NAD⁺, a vital coenzyme in the human body, NMN has long drawn heated discussion for its anti-aging and metabolic-regulating effects.
Can it qualify as a reliable auxiliary supplement for exercise?
Mechanism of Action of NMN
NAD⁺ participates extensively in thousands of physiological processes including mitochondrial metabolism and oxidation reactions within the human body.
Endurance exercise itself activates NAD⁺-related metabolic pathways and boosts skeletal muscle performance.
Mechanistically, NMN replenishes bodily NAD⁺ reserves, which theoretically creates a synergistic effect with exercise to optimize athletic performance.
Practical Effects of NMN
A randomized, double-blind, controlled clinical trial focusing on amateur runners specifically verified the real-world outcomes of aerobic training paired with different NMN dosages.
The study divided 48 habitual runners into three NMN supplementation groups and one placebo group, implementing a standardized six-week aerobic training regimen.
Results revealed that participants taking 600 mg and 1200 mg of NMN daily achieved a marked elevation in ventilatory threshold during exercise.
As a core metric for assessing aerobic endurance, a higher ventilatory threshold indicates the body sustains aerobic metabolism under greater exercise intensity, effectively delaying the onset of fatigue.
NMN Targets Primarily Skeletal Muscle
The study also confirmed that NMN exerts its primary impact on skeletal muscle by improving muscular oxygen utilization efficiency.
It does not alter key benchmarks such as maximal oxygen uptake or cardiac function, nor does it modify body composition metrics including body weight and body fat percentage for exercisers.
In terms of safety, daily doses ranging from 300 mg to 1200 mg produced no adverse reactions throughout the trial period, with all exercise-related physiological markers remaining within normal ranges, demonstrating favorable short-term safety for supplementation.
Nevertheless, the research carries certain limitations:
the trial lasted only six weeks, with no available data on long-term intake;
the subject pool consisted predominantly of male participants, so gender-based disparities in efficacy require further investigation.
Additionally, low-dose NMN (300 mg per day) yielded negligible performance improvements.
In summary, NMN holds promise as an exercise auxiliary supplement, especially for individuals undertaking endurance training.
It aids in boosting aerobic exercise capacity and postponing workout fatigue.
That said, it is by no means a “miracle fitness product”—it cannot surpass human athletic limits, nor can it replace structured, scientific training.
Reference
Liao B, Zhao Y L, Wang D, et al. Nicotinamide mononucleotide supplementation enhances aerobic capacity in amateur runners: a randomized, double-blind study[J]. Journal of the International Society of Sports Nutrition, 2021, 18(1): 54.
*Special note - This article is for informational purposes only and cannot replace a doctor's treatment diagnosis and advice. It should not be regarded as a recommendation or proof of efficacy of the medical products involved. If it involves disease diagnosis, treatment, and rehabilitation, please be sure to go to a professional medical institution to seek professional advice.
by GSHWORLD
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