Moreover, the CCV between bilateral H-waves exhibited a significant increase in athletes but not in sedentary individuals. After training, the FD was significantly increased in sedentary individuals but significantly reduced in athletes, although there were no changes in spinal excitability in either group of subjects. athletes, the running time between sedentary and athletes was different. Given the different physical condition of sedentary vs. The training modality in all subjects consisted of running three times per week (for 13 weeks) in a concrete road of 5 km. The aim of this study was to compare the H-wave FD as well as the CCV before and after track training in sedentary individuals and athletes. Such changes are evaluated with the fractal dimension (FD) analysis of the H-wave amplitude-fluctuations (H-wave FD) and the cross-covariance (CCV) between the bilateral H-wave amplitudes. ![]() We herein explore the hypothesis that physical training induces plastic changes in the motor system. ![]() A feature of this electromyography response is that it exhibits fluctuations in amplitude even during repetitive stimulation with the same intensity of current. The Hoffmann reflex (H-wave) is produced by alpha-motoneuron activation in the spinal cord.
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