Szukana fraza: [Abstract = "Nitric oxide \(NO\), as a signaling molecule, plays a key role in the reconstruction of muscle fibers, especially in the early phase after injury, initiating the proliferation of muscle stem cells \(satellite cells\), angiogenesis and synaptogenesis in motor neuron axons, and, as a result, an increase in the strength of muscle contraction. The study was designed to explain whether a single exercise trial increases NO generation and whether changes in NO level are related with skeletal muscle damage and body composition in non\-athletes."]