Navegando por Autor "PIN, Alessandro dos Santos"

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Acesso aberto (Open Access)
Changes in muscle strength in elderly women after proprioceptive neuromuscular facilitation based training
(Universidade Federal do Pará, 2015-06) SILVA, Edivã Bernardo da; PIN, Alessandro dos Santos; SILVA FILHO, Manoel da
Introduction: Proprioceptive neuromuscular facilitation (PNF) can be used to improve the quality of life of both healthy and diseased subjects, including the elderly, who suffer muscular weakness due to aging, leading to an impairment in functional capacity. Objective: Verify the effectiveness of PNF as a tool for functional conditioning. Materials and methods: We evaluated a total of ten elderly women aged 60–70 years, clinically healthy and physically active. They had the force of motion of hip flexion with knee extension analyzed by an analog dynamometer. They were then randomly and equally divided into experimental (EG) and control group (CG). The GC was instructed to continue with their normal activities while the GE held 15 training sessions in the lower limb (LL) based on the diagonal D1 and D2. Finally, a new collection wrench the two groups was performed and the data compared. Results: There was a significant increase in the average strength of GE, on the order of 31% (p < 0.01). The GC also had increased strength, but not significant (p > 0.05). Discussion: The results confirm that the FNP through initial work of readjustment and proprioceptive neuromuscular activation, and after that, conditioning of the muscle fibers (mainly resistive) is capable of amplifying the force developed by the muscle. Conclusion: The PNF was effective as training to gain muscle strength, should be better analyzed as a tool fitness, not to cause health risks, have low cost and easy application.
Acesso aberto (Open Access)
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.