Efeitos agudos do alongamento estático antes e após exercício e as características neuromusculares do membro inferior: estudo controlado, randomizado e cego
Objective: To evaluate the acute effects of static stretching before and after isokinetic exercise, neuromuscular and biomechanical properties of muscles Biceps Femoris (BF) and semitendinosus (ST). Methods: Eighty-nine volunteers of both genders, healthy and physically active, with a mean age of 22...
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| Formato: | Dissertação |
| Idioma: | por |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/16733 |
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| Resumo: | Objective: To evaluate the acute effects of static stretching before and after
isokinetic exercise, neuromuscular and biomechanical properties of muscles Biceps
Femoris (BF) and semitendinosus (ST). Methods: Eighty-nine volunteers of both
genders, healthy and physically active, with a mean age of 22.52 ± 2.6 years and
mean BMI 23.86 ± 3.2 kg/m² were randomized into 4 groups: Control Group (CG)
made only one Protocol Exercise (PE) without performing the stretching, the
Experimental Group 1 (EG1) did stretching before PE; EG2 did the stretching after
PE and EG3 did stretching before and after PE. The volunteers were evaluated on
the following variables: Range of motion (ROM), soreness, dynamometric variables
concentric and eccentric, Neuromuscular Latency Time (NLT) and
electromyographic. In the data analysis was assigned a significance level of 5%.
Results: ADM and TLNM reported significant reduction in CG, but remained
unchanged in GE with p<0,05 and p<0,01, respectively. As for the soreness, no
differences between the groups. The electromyographic activity of the BF and ST, in
the concentric phase, showed a significant decrease in all groups (p<0,01). However,
in the eccentric phase, ST revealed reduction in all groups (p <0.01), except for the
CG, while the BF remained unchanged in all groups. The PT showed significant
reduction in both conditions (concentric and eccentric) for all groups, with no
difference between them (p<0,01). Conclusion: The results of this study do not favor
the use of static stretching, even of short duration, before physical activity. However,
after exercise or at times unrelated to the sport, he should be given with the aim of
avoiding muscle shortening |
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