Teses em Neurociências e Biologia Celular (Doutorado) - PPGNBC/ICB

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/2390

O Doutorado Acadêmico pertence ao Programa de Pós-Graduação em Neurociências e Biologia Celular (PPGNBC) do Instituto de Ciências Biológicas (ICB) da Universidade Federal do Pará (UFPA).

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    Influência da facilitação neuromuscular proprioceptiva na alteração da fibra do músculo rectus femoris vista através da eletromiografia de superfície e dinamometria analógica
    (Universidade Federal do Pará, 2013-09-23) PIN, Alessandro dos Santos; SILVA FILHO, Manoel da; http://lattes.cnpq.br/2032152778116209
    The PNF - Proprioceptive Neuromuscular Facilitation - is a technique that is increasingly being used in muscle training of healthy people and athletes. Studies have shown that resistance exercise, including PNF, are able to convert the trained muscle fiber type. This research aimed to verify the effectiveness of PNF in increased muscle strength and check for non-invasive methods would be indicative of conversion of muscle fiber type after training. A sample group of 22 young, female university students aged between 18 and 25 years, physically active, was divided into a control group (CG n = 10) and experimental group (EG n = 12). It was collected first the Maximum Volunteer Contraction MVC of Quadriceps muscle for analogic dynamometry and root mean square - RMS by surface electromyography (EMG) of all subjects. After the first data collecting GE conducted FNP based training in the dominant lower limb to 15 sessions in 5 weeks. Before the training sessions, new MVC and RMS data were collected of all samples. Regarding muscular strength, there was an increase in both groups, significant in CG (p< 0.01) and GE (p <0.05) for RMS and MVC time, there wasn´t significant increase in GE, but the interaction Vxt was significantly increased for this group. The results corroborate the literature by showing that muscles with a predominance of resistant fibers (fiber I / IIA) have greater contraction time with more electrical activation and that the FNP is able to type IIB fibers II A. In conclusion the training sample was efficient to increase muscle strength and EMG data presented show strong evidence of the conversion of muscle fibers trained.
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