Central and peripheral fatigue after electrostimulation-induced resistance exercise

摘要: Purpose: To investigate central and peripheral fatigue induced by a typical session of electromyostimulation (EMS) the triceps surae muscle. Methods: A series neuromuscular tests including voluntary electrically evoked contractions were performed before immediately after 13 min EMS (75 Hz) in 10 healthy individuals. Results: Maximal contraction torque plantar flexor muscles significantly decreased (-9.4%; P < 0.001) EMS, this was accompanied an impairment activation, as attested twitch interpolation results (P 0.05), whereas soleus maximal Hoffmann reflex tibialis anterior coactivation did not change significantly. Contractile properties associated with paired stimuli M-wave amplitude for both medial gastrocnemius (-9.4 -38.7%, respectively) affected postactivation potentiation change. Conclusion: single bout resulted attributable to factors. The most obvious alteration function nervous system is decrease quantity neural drive muscle from supraspinal centers. On other hand, propagation failure more evident higher percentage Type II fibers.