Dependence of palmar sweating response and central nervous system activity on the frequency of whole-body vibration

Ando, Hideo; Noguchi, Ryo

doi:10.5271/sjweh.724

Cited by 18 publications

(13 citation statements)

References 19 publications

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“…Vasoconstriction is consistent with a previous report that 30 Hz vibration of the rat's tail reduces blood flow (Okada, 1986). In humans, low-frequency vibration at 31.5 Hz enhances autonomic nerve activity (Ando et al, 2002;Ando and Noguchi, 2003). In the present study, however, the lack of increased endothelial vacuoles after 30 Hz vibration argues against vasoconstriction because intense vasoconstriction generates vacuoles in both endothelial and smooth muscle cells (Joris and Majno, 1977, 1981a, 1981b.…”

Section: Discussionsupporting

confidence: 92%

Evidence for frequency-dependent arterial damage in vibrated rat tails

et al. 2005

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The effects of single 4-hr bouts of continuous 30, 60, 120, and 800 Hz tail vibration (49 m/sec 2 , root mean squared) were compared to assess frequencyamplitude-related structural damage of the ventral caudal artery. Amplitudes were 3.9, 0.98, 0.24, and 0.0055 mm, respectively. Vibrated, sham-vibrated, and normal arteries were processed for light and electron microscopy. The Curry rat tail model of hand-arm vibration (Curry et al. Muscle Nerve 2002; 25:527-534) proved well-suited for testing multiple frequencies. NFATc3 immunostaining, an early marker of cell damage, increased in smooth muscle and endothelial cells after 30, 60, and 120 Hz but not 800 Hz. Increased vacuolization, which is indicative of smooth muscle contraction, occurred for all frequencies except 800 Hz. Vacuoles increased in both endothelial and smooth muscle cells after 60 and 120 Hz. Only 30 Hz showed pronounced smooth muscle cell vacuolization along the internal and external elastic membranes, suggesting stretch-mediated contraction from the large amplitude shear stress. Discontinuities in toluidine blue staining of the internal elastic membrane (IEM) increased for all frequencies, indicating vibration-induced structural weakening of this structure. Patches of missing IEM and overlying endothelium occurred in ϳ 5% of arteries after 60, 120, and 800 Hz. The pattern of damage after 800 Hz suggests that the IEM is disrupted because it resonates at this frequency. Vibration acceleration stress and smooth muscle contraction appear to be the major contributors to arterial damage. The pattern of vibrationinduced arterial damage of smooth muscle and endothelial cells is frequencyamplitude-dependent.

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Section: Discussionsupporting

confidence: 92%

Evidence for frequency-dependent arterial damage in vibrated rat tails

et al. 2005

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“…However, only a small volume of blood (~20 μL) is obtained by pricking with a lancet, as performed in this study. Although we cannot measure the precise weight or volume of fingerprint secretions, the volume of sweat secreted from a fingertip (1 cm 2 ) over 30 s corresponds to approximately 50 nL if it is calculated using a palmar sweating volume at normal state (0.1 mg/cm 2 /min), as reported previously . Because the volume of fingerprint secretions obtained by a single sampling is very small, the entire fingerprint area is used for one drug test.…”

Section: Discussionmentioning

confidence: 67%

Effectiveness of saliva and fingerprints as alternative specimens to urine and blood in forensic drug testing

Kuwayama

Miyaguchi

Yamamuro

et al. 2015

Drug Testing and Analysis

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In forensic drug testing, it is important to immediately take biological specimens from suspects and victims to prove their drug intake. We evaluated the effectiveness of saliva and fingerprints as alternative specimens to urine and blood in terms of ease of sampling, drug detection sensitivity, and drug detection periods for each specimen type. After four commercially available pharmaceutical products were administered to healthy subjects, each in a single dose, their urine, blood, saliva, and fingerprints were taken at predetermined sampling times over approximately four weeks. Fourteen analytes (the administered drugs and their main metabolites) were extracted from each specimen using simple pretreatments, such as dilution and deproteinization, and were analyzed using liquid chromatography/mass spectrometry (LC/MS). Most of the analytes were detected in saliva and fingerprints, as well as in urine and blood. The time-courses of drug concentrations were similar between urine and fingerprints, and between blood and saliva. Compared to the other compounds, the acidic compounds, for example ibuprofen, acetylsalicylic acid, were more difficult to detect in all specimens. Acetaminophen, dihydrocodeine, and methylephedrine were detected in fingerprints at later sampling times than in urine. However, a relationship between the drug structures and their detection periods in each specimen was not found. Saliva and fingerprints could be easily sampled on site without using special techniques or facilities. In addition, fingerprints could be immediately analyzed after simple and rapid treatment. In cases where it would be difficult to immediately obtain urine and blood, saliva and fingerprints could be effective alternative specimens for drug testing. Copyright © 2015 John Wiley & Sons, Ltd.

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“…However, there are some possible contributing factors: 10 sets of 60 s WBV stimuli increase serum free fatty acid concentration during the recovery period [35]. Furthermore, acute exposure to WBV activates the central sympathetic nervous system (SNS) [36]. One key role of the SNS innervation of white adipose tissue is to trigger lipolysis.…”

Section: Disclosurementioning

confidence: 99%

Effect of Long-Term Whole Body Vibration Training on Visceral Adipose Tissue: A Preliminary Report

et al. 2010

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Aim: To determine the effect of whole body vibration (WBV), combined with caloric restriction, on weight, body composition and metabolic risk factors in overweight and obese adults. Methods: A randomized, controlled study with a 6-month intervention period and a 6-month ‘no intervention’ follow-up. 61 of the 79 participants completed the study. Data were collected at baseline and at 3, 6 and 12 months in the control group (CONTROL), the diet only group (DIET), the diet plus fitness group (FITNESS) and the diet plus WBV group (VIBRATION). Results: Weight decreased significantly in all three intervention groups. Only FITNESS and VIBRATION managed to maintain a weight loss of 5% or more in the long term. Visceral adipose tissue (VAT) changed most in VIBRATION: –47.8 ± 41.2 and –47.7 ± 45.7 cm2 after 6 and 12 months respectively compared to CONTROL (–3.6 ± 20.5 or +26.3 ± 30.6 cm²), DIET (–24.3 ± 29.8 or –7.5 ± 28.3 cm²) and FITNESS (–17.6 ± 36.6 or –1.6 ± 33.3 cm²) (p < 0.001). Conclusions: Combining aerobic exercise or WBV training with caloric restriction can help to achieve a sustained long-term weight loss of 5–10%. These preliminary data show that WBV training may have the potential to reduce VAT more than aerobic exercise in obese adults, possibly making it a meaningful addition to future weight loss programs.

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Dependence of palmar sweating response and central nervous system activity on the frequency of whole-body vibration

Cited by 18 publications

References 19 publications

Evidence for frequency-dependent arterial damage in vibrated rat tails

Evidence for frequency-dependent arterial damage in vibrated rat tails

Effectiveness of saliva and fingerprints as alternative specimens to urine and blood in forensic drug testing

Effect of Long-Term Whole Body Vibration Training on Visceral Adipose Tissue: A Preliminary Report

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