Whole body vibration is a safe exercise training method and induces no impaired alterations on rat plasma parameters

Background:Whole body vibration (WBV) exercise has been used in health sciences. Authors have reported that changes on the concentration of plasma biomarkers could be associated with the WBV effects. The aim of this investigation is to assess the consequences of exposition of 25 Hz mechanical vibration generated in oscillating/vibratory platform (OVP) on the concentration of some plasma biomarkers and on the weight of rats.Materials and Methods:Wistar rats were divided into two groups. The animals of the Experimental Group (EG) were submitted to vibration (25 Hz) generated in an OVP with four bouts of 30 seconds with rest time of 60 seconds between the bouts. This procedure was performed daily for 12 days. The animals of the control group (CG) were not exposed to vibration.Results:Our findings show that the WBV exercise at 25 Hz was not capable to alter significantly (p<0.05) the weight of the rats. A significant alteration in the concentrations of amylase was found.Conclusion:Our results indicate a modulation of the WBV exercise with vibration of 25 Hz of frequency (i) in the pathways related to the weight and (ii) in the concentration of some biomarkers, such as amylase.

Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 72%

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Effect of Mechanical Vibration Generated in Oscillating/Vibratory Platform on the Concentration of Plasma Biomarkers and on the Weight in Rats.

Frederico¹,

Sá-Caputo²,

Moreira-Marconi³

et al. 2017

“…In young rats, for example, an eight weeks protocol of WBV resulted in increased body weight in the vibration group as compared to the control group (Naghii et al, 2011). Twelve weeks of WBV in old rats resulted in a reduction of body fat mass as compared to controls (Maddalozzo et al, 2008).…”

Section: Introductionmentioning

confidence: 98%

Whole Body Vibration Improves Attention and Motor Performance in Mice Depending on the Duration of the Whole-Body Vibration Session

Keijser

Heuvelen

Nyakas³

et al. 2017

Background: Whole body vibration (WBV) is a form of physical stimulation via mechanical vibrations transmitted to a subject. It is assumed that WBV induces sensory stimulation in cortical brain regions through the activation of skin and muscle receptors responding to the vibration. The effects of WBV on muscle strength are well described. However, little is known about the impact of WBV on the brain. Recently, it was shown in humans that WBV improves attention in an acute WBV protocol. Preclinical research is needed to unravel the underlying brain mechanism. As a first step, we examined whether chronic WBV improves attention in mice. Material and Methods: A custom made vibrating platform for mice with low intensity vibrations was used. Male CD1 mice (3 months of age) received five weeks WBV (30 Hz; 1.9 G), five days a week with sessions of five (n=12) or 30 (n=10) minutes. Control mice (pseudo-WBV; n=12 and 10 for the five and 30 minute sessions, respectively) were treated in a similar way, but did not receive the actual vibration. Object recognition tasks were used as an attention test (novel and spatial object recognition -the primary outcome measure). A Balance beam was used for motor performance, serving as a secondary outcome measure. Results: WBV sessions of five (but not WBV sessions of 30 minutes) improved balance beam performance (mice gained 28% in time needed to cross the beam) and novel object recognition (mice paid significantly more attention to the novel object) as compared to pseudo WBV, but no change was found for spatial object performance (mice did not notice the relocation). Although 30 minutes WBV sessions were not beneficial, it did not impair either attention or motor performance. Conclusion: These results show that brief sessions of WBV improve, next to motor performance, attention for object recognition, but not spatial cues of the objects. The selective improvement of attention in mice opens the avenue to unravel the underlying brain mechanisms.

“…While the concentration of the LDL decreased significantly, triglycerides, total cholesterol, VLDL and HDL concentrations were not affected by the vibration exposure. Naghii et al (2011) have determined the plasma lipid concentrations (total cholesterol, LDL and HDL) in rats submitted to vibrations in the frequencies of 10-50 Hz and they did not found alteration in the concentrations of these biomarkers. However, Monteiro et al (2015) have observed a reduction in the VLDL cholesterol, while the other biomarkers of lipid metabolism were not altered in rats submitted to 20 Hz.…”

Section: Discussionmentioning

confidence: 97%

Effect of a Short Period Whole Body Vibration With 10 Hz on Blood Biomarkers in Wistar Rats

Monteiro¹,

Sá-Caputo²,

Moreira-Marconi³

et al. 2017

Background:Exposure to whole body vibration exercises (WBVE), besides some biological effects, causes alterations in the concentration of some blood biomarkers. The aim of this study is to evaluate the action of vibration (10 Hz) of WBVE on the concentration of blood biomarkers in Wistar rats.Materials and Methods:Wistar rats were divided in 2 groups. The experimental group (EG) was subjected to vibrations of 10Hz (one min per day, one week, total time of seven min), while the control group (CG) has not experienced vibration. Samples of whole blood were drawn for biochemical analysis of the concentration of total cholesterol, triglycerides, HDL, LDL, VLDL, glucose, CPK, albumin, alkaline phosphates, TGP, TGO, γGT, lipase, amylase, urea and creatinine.Results:White blood cell count and a platelet-hemogram were also performed. Significant (p<0.05) increase in TGP, TGO and white blood cells and decrease in LDL concentration was found after exposure of 10Hz mechanical vibration.Conclusion:Although these findings were obtained with rats, they might contribute to try to understand better these mechanisms that occur following exposure to a frequency of 10Hz.