The Impact of Short-Term Nitric Oxide Supplementation on Muscular Power and Neuromuscular Adaptation in Strength Athletes

Abstract

Nitric oxide (NO) plays a crucial role in various physiological processes, particularly in enhancing blood flow and modulating neuromuscular function. This study investigates the impact of short-term NO supplementation on muscular power and neuromuscular adaptation in strength athletes, with a focus on biomechanical and neurological regulation. Thirty experienced strength athletes were randomly assigned to either a NO supplementation group or a placebo group for 14 days. The primary outcomes measured were peak power output across three key resistance exercises (back squat, bench press, and deadlift) and neuromuscular adaptation, assessed through electromyography (EMG) and motor unit recruitment patterns. The results demonstrated a significant increase in peak power output in the NO group compared to the placebo group, with average improvements of 8.5%, 7.2%, and 9.1% in the back squat, bench press, and deadlift, respectively. Additionally, the NO group showed enhanced neuromuscular efficiency, evidenced by increased EMG amplitude and improved motor unit recruitment patterns. A positive correlation was observed between corticospinal excitability and peak power output, suggesting that NO supplementation enhances neural drive, contributing to better performance outcomes. These findings indicate that short-term NO supplementation can effectively improve muscular power and neuromuscular adaptation, making it a valuable strategy for strength athletes aiming to optimize their training and performance.