masterThesis
Efeitos do alongamento e do aquecimento no desempenho isocinético e na atividade eletromiográfica do músculo bíceps femoral ensaio clínico randomizado
Fecha
2010-12-01Registro en:
AMARO, Ivy Marques. Efeitos do alongamento e do aquecimento no desempenho isocinético e na atividade eletromiográfica do músculo bíceps
femoral ensaio clínico randomizado. 2010. 78 f. Dissertação (Mestrado em Movimento e Saúde) - Universidade Federal do Rio Grande do Norte, Natal, 2010.
Autor
Amaro, Ivy Marques
Resumen
To evaluate the effects of warm-up and stretching, singly or combined, on
isokinetic performance and electromyographic activity of the biceps femoris.
Materials and methods: Sixty-four volunteers of both sexes, with mean age of 23,1
± 3,5 years and mean body mass index of 23,5 ± 2,5 Kg/m2 were randomly assigned
into 4 groups: control, warm-up (stationary bicycle for 10 minutes), stretching (4 sets
of 30 seconds of hamstring muscles static stretching) and warm-up + stretching. All
the volunteers were submitted to evaluation pre and post-intervention of the muscle
latency time and biceps femoris RMS and the passive torque, peak torque and power
of the hamstring muscles. Results: The warm-up + stretching group had reduction of
muscle latency time. There was a reduction of RMS during passive torque evaluation
in stretching group. The RMS during isometric evaluation was reduced in all
experimental groups. The RMS during eccentric evaluation showed reduction in
control and warm-up + stretching groups. The passive torque and the eccentric peak
torque had no significant differences pre to post-intervention in any group. There was
reduction in isometric peak torque in all groups. Conclusion: The warm-up and
stretching, when applied in combination can reduce the muscle latency time;
stretching protocol promoted neural changes; the protocols used did not alter the
muscle viscoelastic properties