Determining the Optimal Whole-Body Vibration Dose–response Relationship for Muscle Performance (original) (raw)
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Rauch et al Recommendations.pdf
During the past decade there has been increasing interest in the use of whole-body vibration (WBV) as a therapeutic modality. Many WBV treatment studies aim at improving some aspect of neuromuscular performance or at increasing bone mass or density (for recent reviews see 1-7 ).
Bosco Clinical Physiology 1999.pdf
The aim of this study was to investigate the effects of whole-body vibrations (WBV) on the mechanical behaviour of human skeletal muscle. For this purpose, six female volleyball players at national level were recruited voluntarily. They were tested with maximal dynamic leg press exercise on a slide machine with extra loads of 70, 90, 110 and 130 kg. After the testing, one leg was randomly assigned to the control treatment (C) and the other to the experimental treatment (E) consisting of vibrations. The subjects were then retested at the end of the treatment using the leg press. Results showed remarkable and statistically signi®cant enhancement of the experimental treatment in average velocity (AV), average force (AF) and average power (AP) (P<0á05±0á005). Consequently, the velocity±force and power±force relationship shifted to the right after the treatment. In conclusion, it was af®rmed that the enhancement could be caused by neural factors, as athletes were well accustomed to the leg press exercise and the learning effect was minimized.
CARDINALE, M., M. FERRARI, and V. QUARESIMA. Gastrocnemius Medialis and Vastus Lateralis Oxygenation during Whole-Body Vibration Exercise. Med. Sci. Sports Exerc., Vol. 39, No. 4, pp. 694-700, 2007. Purpose: The aim of this study was to investigate the effects of different whole-body vibration (WBV) frequencies on oxygenation of vastus lateralis (VL) and gastrocnemius medialis (GM) muscles during static squatting in sedentary and physically active healthy males. Methods: Twenty volunteers (age: 24.6 T 2.9 yr; body mass: 80.6 T 11.8 kg; height: 178.1 T 7.6 cm) participated in this study. Ten subjects were sedentary individuals and 10 were athletes practicing different sports. All subjects completed four trials (control, and 30-, 40-, and 50-Hz WBV) in a randomized controlled crossover design. The trials consisted of static squatting on a vibrating platform for a total duration of 110 s. Muscle-oxygenation status was recorded with near-infrared spectroscopy. Results: The data analysis revealed no significant treatment-by-time interactions in tissue-oxygenation index (TOI) or $ total hemoglobin volume (tHb) in VL and GM muscles. A significant main effect of time in TOI of both VL and GM muscles was identified (P G 0.001). VL TOI significantly decreased by 2.8% at 90 s in the control condition and by 3.3% at 110 s in the 30-Hz condition; VL TOI significantly increased by 2.1 and 3.0% at 30 s in the 40-and 50-Hz conditions, respectively. GM TOI significantly decreased by 3.2% at 60 s, by 4.1% at 90 s, and by 4.3% at 110 s in the control condition, and by 5.5% at 110 s in the 30-Hz condition. Conclusion: This study showed that WBV exercise with frequencies of 30, 40, and 50 Hz and small amplitudes does not affect muscle oxygenation of VL and GM muscles to a higher degree than a nonvibration condition. FIGURE 1-Typical time course of vastus lateralis (left panels) and gastrocnemius medialis (right panels) muscle TOI (%) (thick black line) and tHb concentration (gray thick line) changes measured on an athlete during the control condition (A, B), 30-Hz WBV (C, D), 40-Hz WBV (E, F), and 50-Hz WBV (G, H). The vertical bars indicate the beginning and the end of the treatment.
During the past decade there has been increasing interest in the use of whole-body vibration (WBV) as a therapeutic modality. Many WBV treatment studies aim at improving some aspect of neuromuscular performance or at increasing bone mass or density (for recent reviews see 1-7 ).
Cardinale e Lim 2003 Medicina dello Sport.pdf
Aim. Vibration exercise is a novel exercise intervention, which is applied in athletes and general populations with the aim of improving strength and power performance. The present study was aimed to analyse the adaptive responses to different whole body vibration frequencies.
Rauch et al recommendations Vibration.pdf
During the past decade there has been increasing interest in the use of whole-body vibration (WBV) as a therapeutic modality. Many WBV treatment studies aim at improving some aspect of neuromuscular performance or at increasing bone mass or density (for recent reviews see 1-7 ).
Sports Medicine, 2019
Knee extensor strength was reduced post-immobilisation using a brace (n = 14: range − 1.1 to − 4.0% day −1 ; median − 2.0% day −1) and ULLS (n = 7: range − 0.5 to − 1.3% day −1 ; median − 1.0% day −1). Plantar flexor strength declined following the use of casts (n = 3: range − 1.6 to − 2.0% day −1 ; median − 1.8% day −1) and using ULLS (n = 6: range − 0.3 to − 0.9% day −1 ; median − 0.7% day −1). In the studies that specifically cast the ankle, both observed plantar flexor strength declined (n = 2: − 1.1% day −1 and − 1.2% day −1). Dorsiflexor strength was only measured in one study, which showed an overall decline (− 1.6% day −1). 3.5.1.2 Upper Limb Upper limb immobilisation caused a loss in strength of the elbow flexors (n = 3: − 0.9 to − 1.3% day −1 ; median − 1.2% day −1). By contrast, the loss of elbow flexor strength when immobilisation was achieved using a sling was variable across studies (n = 2: + 0.1% day −1 increase and − 0.3% day −1 decrease). Elbow extensor strength declined across all studies using both brace (n = 3, − 0.6 to − 1.3% day −1 ; median − 1.1% day −1) and sling (n = 1, − 0.2% day −1) immobilisation methods. Wrist flexor strength decreased across all studies (n = 6: range − 0.5 to − 3.9% day −1 ; median − 1.8% day −1), while a single study measured a decrease in wrist extensor strength (− 3.5% day −1) following use of casts. Immobilisation of the finger and thumb muscles via brace or cast resulted in both increases and decreases (n = 11: range + 0.6% day −1 increase to − 26.5% day −1 decrease; median − 1.6% day −1). 3.5.2 Muscle Size 3.5.2.1 Lower Limb Studies using a fixed-angle brace model observed a decline in muscle size in the muscles above the knee (n = 5:
PLOS ONE
Background and Aim There is increasing recognition about the importance of enhancing energy expenditure (EE) for weight control through increases in low-intensity physical activities comparable with daily life (1.5-4 METS). Whole-body vibration (WBV) increases EE modestly and could present both a useful adjuvant for obesity management and tool for metabolic phenotyping. However, it is unclear whether a "dose-response" exists between commonly-used vibration frequencies (VF) and EE, nor if WBV influences respiratory quotient (RQ), and hence substrate oxidation. We aimed to investigate the EE-VF and RQ-VF relationships across three different frequencies (30, 40, and 50Hz). Methods EE and RQ were measured in 8 healthy young adults by indirect calorimetry at rest, and subsequently during side-alternating WBV at one of 3 VFs (30, 40, and 50 Hz). Each frequency was assessed over 5 cycles of intermittent WBV (30s vibration/30s rest), separated by 5 min seated rest. During the WBV participants stood on the platform with knees flexed sufficiently to maintain comfort, prevent transmission of vibration to the upper body, and minimise voluntary physical exertion. Repeatability was assessed across 3 separate days in a subset of 4 individuals. In order to assess any sequence/habituation effect, an additional group of 6 men underwent 5 cycles of intermittent WBV (30s vibration/30s rest) at 40 Hz, separated by 5 min seated rest. Results Side-alternating WBV increased EE relative to standing, non-vibration levels (+36%, p<0.001). However, no differences in EE were observed across VFs. Similarly, no effect of VF on RQ was found, nor did WBV alter RQ relative to standing without vibration.
Erskine and Cardinale Clin Physiol.pdf
Whole body vibration (WBV) has been proposed as an alternative exercise stimulus to produce adaptive responses similar to resistance exercise. Few studies have analysed acute hormonal responses to WBV. Purpose To evaluate neuromuscular and hormonal responses to an acute bout of isometric half-squat exercise with and without superimposition of WBV. Methods Seven healthy males (22AE3 ± 2AE7 years) performed 10 sets of half squat isometric exercise for 1 min with 1-min rest between sets. Two separate trials were conducted either with WBV [30 Hz; 3AE5 g (1 g = 9AE81 mAEs 2 )] or without vibration (Control). Salivary concentration of testosterone and cortisol was collected and maximal isometric unilateral knee extensions (MVC) were completed before, immediately after, 1, 2 and 24 h after treatment. Results Significant decreases in MVC were observed immediately after (229AE4 ± 53AE2 Nm), 1 h (231AE6 ± 59AE9 Nm), and 2 h (233AE0 ± 59AE1 Nm) after WBV compared with baseline (252AE7 ± 56AE4 Nm; P<0AE05). No significant change in MVC was recorded in Control. Rate of torque development in the first 200 ms (RTD 200 ms ), and salivary testosterone and cortisol concentrations were unaffected in both conditions. However, there was a trend for change over time in cortisol (P = 0AE052), with an increase after WBV and decrease after Control. Conclusion A 10 min session of intermittent WBV was shown to produce an acute reduction in MVC in healthy individuals, which recovered after 24 h. No significant changes were identified in salivary concentration of testosterone and cortisol suggesting that WBV with low acceleration does not represent a stressful stimulus for the neuroendocrine system. responses of human skeletal muscle to vibration exposure. Clin Physiol (1999); 19: 183-187.
Cardinale clin physiol 2006.pdf
Whole body vibration (WBV) has been suggested as an alternative form of exercise producing adaptive responses similar to that of resistance training. Very limited information is available on the effects of different vibration parameters on anabolic hormones. In this study, we compared the acute effects of different WBV amplitudes on serum testosterone (T) and insulin growth factor-1 (IGF-1). Nine healthy young recreationally active adult males (age 22 ± 2 years, height 181 ± 6.3 cm, weight 77AE4 ± 9AE5 kg) voluntarily participated in this randomized controlled (cross-over design) study. The subjects performed 20 sets of 1 min each of WBV exercise in the following conditions: Non-vibration condition (control), low amplitude vibration [low (30 Hz, 1AE5 mm peak-to-peak amplitude)] and high amplitude vibration [high (30 Hz, 3 mm peak-to-peak amplitude)]. Blood samples were collected before, after 10 sets, at the end (20th set) and after 24 h of the exercise bout. WBV exercise did not produce significant changes in serum T and IGF-1 either with low or high amplitude when compared with the control condition. The results of this study demonstrate that a single session of WBV exposure with a frequency of 30 Hz and amplitudes of 1AE5 and 3 mm does not noticeably alter serum T and IGF-1 levels.