SciELO - Scientific Electronic Library Online

vol.15 issue2Influence of the time interval between stretching sessions on increased hamstring flexibilityProtein supplementation does not increase nitric oxide plasmatic concentration in healthy men author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista Brasileira de Medicina do Esporte

Print version ISSN 1517-8692On-line version ISSN 1806-9940


BERTOLINI, Gladson Ricardo Flor; BARBIERI, Cláudio Henrique  and  MAZZER, Nilton. Longitudinal analysis of soleus muscles of rats submitted to passive stretching with previous use of therapeutic ultrasound. Rev Bras Med Esporte [online]. 2009, vol.15, n.2, pp.115-118. ISSN 1517-8692.

Muscular stretching is much diffused among athletes and people involved in physical activities, besides being a routine procedure in physiotherapy clinics, mainly aiming at flexibility increase. The therapeutic ultrasound possesses thermal and non-thermal effects, which generate possibilities of tissue extensibility and cellular metabolism increase and can aid in static stretching anabolic effects. The aim of this study was to analyze the static passive stretching effects in left soleus muscle (LSM) of rats, associated to the therapeutic ultrasound use on muscular tissue longitudinal alterations. Forty-two Wistar rats, divided in therapeutic ultrasound treated groups, with thermal and non-thermal doses, and subsequent static stretching in 3 sets of 30 s, besides groups just treated with ultrasound or stretched, for 15 days were used. The variations found between LSM and RSM of each group were compared. The variables were: muscular length, serial sarcomere estimation in the fiber and along the muscle, and sarcomere length. The analyzed variables results showed alterations in rest muscular length in the groups with therapeutic ultrasound in thermal dose associated to static stretching. However, there were not significant differences for the other analyzed variables. It is concluded that static passive stretching associated to therapeutic ultrasound in thermal dose just produced increase in rest muscular length.

Keywords : ultrasound; skeletal muscle; sarcomere.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License