ABSTRACT
The rhythmical neuromuscular stimulation (RNS) by Nasarov is a new method for optimizing performance. By transferring mechanical vibration to the tendomuscular system better coordination of peripheral and central nervous system could be achieved. A study with twelve healthy students of physical education dealt with the question of the effects of RNS on drop jumps. After 12 minutes application of RNS the performance drastically decreased. Jumping height lowered and ground contact time increased. Recordings of EMG revealed corresponding alterations in muscle activity, such occurring in overload situations. Plastic deformation of tendon collagen and neuromuscular adaptation as stiffness-reduction of gamma-modulation is discussed.
Subject(s)
Electromyography , Muscle Spindles/physiology , Neuromuscular Junction/physiology , Physical Therapy Modalities/instrumentation , Adult , Female , Humans , Isometric Contraction/physiology , Male , Motor Neurons/physiology , Muscle, Skeletal/innervation , Physical Education and Training , Reflex, Stretch/physiology , VibrationABSTRACT
According to Nasarov an outstanding improvement of flexibility could be reached by using the rhythmical neuromuscular stimulation (RNS). For proving this statement a study with 112 healthy fitness sportsmen and women was performed for three weeks at chest muscles. Overall, there was no clear advantage of RNS versus static stretch shown. However, it exists a dependence of improving flexibility by static stretch at simultaneous strength training. Persons who perform strength training obtain a higher improvement in flexibility than others. Using RNS the results in reaching high range of motions are independent of strength training and comparable to static stretch at simultaneous strength training. The results were discussed by a higher rate of biosynthesis induced by strength training respectively by the eccentric load of RNS.
