Effects of vibratory platform training on the histomorphometric parameters of the soleus muscle in obese Wistar rats
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ORIGINAL ARTICLE
Effects of vibratory platform training on the histomorphometric parameters of the soleus muscle in obese Wistar rats Mariana Laís Boaretto1 · Bárbara Zanardini de Andrade1 · Jhyslayne Ignácia Hoff Nunes Maciel1 · Iranilda Moha1 · Sara Cristina Sagae Schneider2 · Márcia Miranda Torrejais1 · Lucinéia de Fátima Chasko Ribeiro1 · Gladson Ricardo Flor Bertolini1 Received: 16 July 2019 / Accepted: 3 March 2020 © Springer-Verlag Italia S.r.l., part of Springer Nature 2020
Abstract Background The increasing of obesity is one of the main challenges of public health, with an incentive to the development of healthy life habits and practise of physical exercise. Among the physical exercises, the use of whole body vibration is highlighted, which can promote gain of muscle strength. Aims This study aimed atevaluating the effects that vibratory platform causes on the histomophometry and fiber types of the soleus muscle of Wistar rats with induced obesity by monosodium glutamate (MSG). Methods Thirty-two male Wistar rats were used, 16 of which were induced by obesity with intradermal injections of MSG, equally randomized into four groups: control (GC), control with intervention (GCP), obese (GO), and obese with intervention (GOP). At the 70 days, the training on vibratory platform was started adapted to a frequency of 60 Hz and amplitude of 2 mm, performed 3 times a week, with a duration of 10 min, during 8 consecutive weeks. At 130 days, the animals were weighed and the nasoanal length was measured; then they were euthanized and the soleus muscles were collected and processed for analysis. Data were statistically analyzed about the homogeneity of variances by the Bartlett’s test, about the normality by Shapiro–Wilk’s test, then ANOVA of two factors and Tukey-HSD follow-up tests, adopting the significance level of 5%. Results Morphometrically, the obese groups presented muscle hypotrophy (p
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