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AlBaiti S, Arumugam A, Nawayseh N. Acute neuromuscular responses to whole-body vibration in healthy individuals: A systematic review. J Electromyogr Kinesiol 2024; 77:102888. [PMID: 38833795 DOI: 10.1016/j.jelekin.2024.102888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/19/2024] [Accepted: 05/13/2024] [Indexed: 06/06/2024] Open
Abstract
Whole-body vibration (WBV) training has been employed alongside conventional exercise like resistance training to enhance skeletal muscle strength and performance. This systematic review examines the evidence regarding the effect of WBV on muscle activity, strength, and performance in healthy individuals. The Academic Search Ultimate, CINAHL, Cochrane CENTRAL, PubMed, ProQuest One Academic and SCOPUS databases were searched from 1990 to April 2023 to retrieve relevant studies. Methodological quality was assessed using the Modified Downs and Black checklist, while the level of evidence was evaluated through the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) tool. Even though the quality of the included studies was moderate to high, the level of evidence was very low owing to serious concerns with three or more GRADE domains (risk of bias, inconsistency, indirectness, imprecision, and publication bias) for each outcome of interest across studies. The review suggests that in WBV training, using moderate to high vibration frequencies (25-40 Hz) and high magnitudes (3-6 mm) can enhance muscle activation and strength in pelvis and lower limb muscles. However, findings regarding WBV effect on muscle performance measures were inconsistent. Future research with robust methodology is necessary in this area to validate and support these findings.
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Affiliation(s)
- Saleh AlBaiti
- Sustainable Engineering Asset Management Research Group, RISE - Research Institute of Sciences and Engineering, University of Sharjah, P.O. Box: 27272, Sharjah, United Arab Emirates
| | - Ashokan Arumugam
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, P.O. Box: 27272, Sharjah, United Arab Emirates; Neuromusculoskeletal Rehabilitation Research Group, RIMHS - Research Institute of Medical and Health Sciences, University of Sharjah, P.O. Box: 27272, Sharjah, United Arab Emirates; Adjunct Faculty, Department of Physiotherapy, Manipal College of Health Professions, Manipal, Academy of Higher Education, Manipal, Karnataka, India.
| | - Naser Nawayseh
- Department of Mechanical and Nuclear Engineering, College of Engineering, P.O. Box: 27272, University of Sharjah, Sharjah, United Arab Emirates
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Wang Z, Wei Z, Li X, Lai Z, Wang L. Effect of whole-body vibration on neuromuscular activation and explosive power of lower limb: A systematic review and meta-analysis. PLoS One 2022; 17:e0278637. [PMID: 36473014 PMCID: PMC9725163 DOI: 10.1371/journal.pone.0278637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE The review aimed to investigate the effects of whole-body vibration (WBV) on neuromuscular activation and explosive power. METHODS Keywords related to whole-body vibration, neuromuscular activation and explosive power were used to search four databases (PubMed, Web of Science, Google Scholar and EBSCO-MEDLINE) for relevant studies published between January 2000 and August 2021. The methodology of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses was used. The eligibility criteria for the meta-analysis were based on PICOST principles. Methodological assessment used the Cochrane scale. Heterogeneity and publication bias were assessed by I2 index and funnel plots, respectively. The WBV training cycle is a random effect model. Publication bias was also assessed based on funnel plots. This study was registered in PROSPERO (CRD42021279439). RESULTS A total of 156 participants data in 18 studies met the criteria and were included in the meta-analysis for quantitative synthesis. Results of the meta-analysis showed significant improvements in lower limb neuromuscular activation immediately after WBV compared with the baseline (SMD = 0.51; 95% CI: 0.26, 0.76; p<0.001), and no significant heterogeneity was observed (I2 = 38%, p = 0.07). In addition, the highest increase in lower limb explosive power was observed (SMD = 0.32; 95% CI: 0.11, 0.52; p = 0.002), and no significant heterogeneity (I2 = 0%, p = 0.80) was noted. CONCLUSIONS WBV training could improve neuromuscular activation and explosive power of the lower limb. However, due to different vibration conditions, further research should be conducted to determine standardized protocols targeting performance improvement in athletes and healthy personnel experienced in training.
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Affiliation(s)
- Zhen Wang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
- Guang Dong Youth Vocational College, Guangzhou, China
| | - Zhen Wei
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Xiangming Li
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Zhangqi Lai
- The Third School of Clinical Medicine (School of Rehabilitation Medicine), Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
- * E-mail: (ZL); (LW)
| | - Lin Wang
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
- * E-mail: (ZL); (LW)
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Viellehner J, Potthast W. The effect of vibration on kinematics and muscle activation during cycling. J Sports Sci 2022; 40:1760-1771. [PMID: 35984289 DOI: 10.1080/02640414.2022.2109841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Vibration has the potential to compromise performance in cycling. This study aimed to investigate the effects of vibration on full-body kinematics and muscle activation time series. Nineteen male amateur cyclists (mass 74.9 ± 5.9 kg, body height 1.82 ± 0.05 m, Vo2max 57 ± 9 ml/kg/min, age 27 ± 7 years) cycled (216 ± 16 W) with (Vib) and without (NoVib) vibration. Full-body kinematics and muscle activation time series were analysed. Vibration did not affect lower extremity joint kinematics significantly. The pelvic rotated with vibration towards the posterior direction (NoVib: 22.2 ± 4.8°, Vib: 23.1 ± 4.7°, p = 0.016, d = 0.20), upper body lean (NoVib: 157.8 ± 3.0°, Vib: 158.9 ± 3.4°, p = 0.001, d = 0.35) and elbow flexion (NoVib: 27.0 ± 8.2°, Vib: 29.4 ± 9.0°, p = 0.010, d = 0.28) increased significantly with vibration. The activation of lower extremity muscles (soleus, gastrocnemius lat., tibialis ant., vastus med., rectus fem., biceps fem.) increased significantly during varying phases of the crank cycle due to vibration. Vibration increased arm and shoulder muscle (triceps brachii, deltoideus pars scapularis) activation significantly over almost the entire crank cycle. The co-contraction of knee and ankle flexors and extensors (vastus med. - gastrocnemius lat., vastus med. - biceps fem., soleus - tibialis ant.) increased significantly with vibration. In conclusion vibrations influence main tasks such as propulsion and upper body stabilization on the bicycle to a different extent. The effect of vibration on the task of propulsion is limited due to unchanged lower body kinematics and only phase-specific increases of muscular activation during the crank cycle. Additional demands on upper body stabilization are indicated by adjusted upper body kinematics and increased muscle activation of the arm and shoulder muscles during major parts of the cranking cycle.
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Affiliation(s)
- Josef Viellehner
- German Sport University Cologne - Institute of Biomechanics and Orthopaedics.,German Sport University Cologne, Institute of Outdoor Sports and Environmental Science, Cologne, Germany
| | - Wolfgang Potthast
- German Sport University Cologne - Institute of Biomechanics and Orthopaedics
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Liu Y, Fan Y, Chen X. Effects of Whole-Body Vibration Training with Different Body Positions and Amplitudes on Lower Limb Muscle Activity in Middle-Aged and Older Women. Dose Response 2022; 20:15593258221112960. [PMID: 35859854 PMCID: PMC9289914 DOI: 10.1177/15593258221112960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 06/23/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose The present study was designed to investigate the electromyographic (EMG)
response in leg muscles to whole-body vibration while using different body
positions and vibration amplitudes. Methods: An experimental study with repeated measures design involved a group of
community-dwelling middle-aged and older women (n = 15; mean age=60.8 ±
4.18 years). Muscle activity of the gluteus maximus (GM), rectus femoris
(RF), vastus medialis (VM), vastus lateralis (VL), biceps femoris (BF), and
gastrocnemius (GS) was measured by surface electromyography, which
participants were performing three different body positions during three WBV
amplitudes. The body positions included static semi-squat, static semi-squat
with elastic band loading, and dynamic semi-squat. Vibration stimuli tested
were 0 mm, 2 mm, and 4 mm amplitude and 30 Hz frequencies. And the maximum
accelerations produced by vibration stimuli with amplitudes of 2 mm and 4 mm
are approximately 1.83 g and 3.17 g. Results: Significantly greater muscle activity was recorded in VL, BF, and GS. When
WBV was applied to training, compared with the same training without WBV
(P < .05). There were significant main effects of
body positions on EMGrms for the GM, RF, and VM (P <
.05). Compared to static semi-squat, static semi-squat with elastic band
significantly increased the EMGrms of GM, and dynamic semi-squat
significantly increased the EMGrms of GM, RF and VM (P < .05). And there
were significant main effects of amplitudes on EMGrms for the GM, RF, and VM
(P < .05). The EMGrms of the VL, BF, and GS at 4 mm
were significantly higher than 0 mm, and the EMGrms of the VL and BF at 4 mm
were significantly higher than 2 mm. There was no significant body
interaction between body positions and amplitudes (P > .05). Conclusions: The EMG amplitudes of most leg muscles tested were significantly greater
during WBV exposure than in the no-WBV condition. The dynamic semi-squat
4 mm whole-body vibration training is recommended for middle-aged and older
women to improve lower limb muscle strength and function.
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Affiliation(s)
- Yuxiu Liu
- Capital University of Physical Education and Sports, Beijing, China
| | - Yongzhao Fan
- Capital University of Physical Education and Sports, Beijing, China
| | - Xiaohong Chen
- Capital University of Physical Education and Sports, Beijing, China
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Characterisation of the transient mechanical response and the electromyographical activation of lower leg muscles in whole body vibration training. Sci Rep 2022; 12:6232. [PMID: 35422059 PMCID: PMC9010427 DOI: 10.1038/s41598-022-10137-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 03/24/2022] [Indexed: 12/17/2022] Open
Abstract
The aim of this study is to characterise the transient mechanical response and the neuromuscular activation of lower limb muscles in subjects undergoing Whole Body Vibration (WBV) at different frequencies while holding two static postures, with focus on muscles involved in shaping postural responses. Twenty-five participants underwent WBV at 15, 20, 25 and 30 Hz while in hack squat or on fore feet. Surface electromyography and soft tissue accelerations were collected from Gastrocnemius Lateralis (GL), Soleus (SOL) and Tibialis Anterior (TA) muscles. Estimated displacement at muscle bellies revealed a pattern never highlighted before that differed across frequencies and postures (p < 0.001). After stimulation starts, muscle oscillation peaks, drops and further stabilises, suggesting the occurrence of a neuromuscular activation to reduce the vibration-induced oscillation. The oscillation attenuation at the SOL muscle correlated with its increased activation (rho = 0.29, p < 0.001). Furthermore, only specific WBV settings led to a significant increase in muscle contraction: WBV-induced activation of SOL and GL was maximal in fore-feet (p < 0.05) and in response to higher frequencies (30 Hz vs 15 Hz, p < 0.001). The analysis of the mechanical dynamics of lower leg muscles highlights a resonant response to WBVs, that for the SOL correlates to the increased muscle activation. Despite differing across frequencies and postures, this resonant behaviour seems to discourage the use of dynamic exercises on vibrating platforms. As for the most efficient WBV combination, calf muscle response to WBVs is maximised if those muscles are already pre-contracted and the stimulation frequencies are in the 25–30 Hz range.
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Masud AA, Shen CL, Luk HY, Chyu MC. Impact of Local Vibration Training on Neuromuscular Activity, Muscle Cell, and Muscle Strength: A Review. Crit Rev Biomed Eng 2022; 50:1-17. [PMID: 35997107 DOI: 10.1615/critrevbiomedeng.2022041625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This paper presents a review of studies on the effects of local vibration training (LVT) on muscle strength along with the associated changes in neuromuscular and cell dynamic responses. Application of local/direct vibration can significantly change the structural properties of muscle cell and can improve muscle strength. The improvement is largely dependent on vibration parameters such as amplitude and frequency. The results of 20 clinical studies reveal that electromyography (EMG) and maximal voluntary contraction (MVC) vary depending on vibration frequency, and studies using frequencies of 28-30 Hz reported greater increases in muscle activity in terms of EMG (rms) value and MVC data than the studies using higher frequencies. A greater muscle activity can be related to the recruitment of large motor units due to the application of local vibration. A greater increase in EMG (rms) values for biceps and triceps during extension than flexion under LVT suggests that types of muscles and their functions play an important role. Although a number of clinical trials and animal studies have demonstrated positive effects of vibration on muscle, an optimum training protocol has not been established. An attempt is made in this study to investigate the optimal LVT conditions on different muscles through review and analysis of published results in the literature pertaining to the changes in the neuromuscular activity. Directions for future research are discussed with regard to identifying optimal conditions for LVT and better understanding of the mechanisms associated with effects of vibration on muscles.
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Affiliation(s)
- Abdullah Al Masud
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX, USA
| | - Chwan-Li Shen
- Department of Pathology, School of Medicine, Texas Tech University, Lubbock, TX, USA
| | - Hui-Ying Luk
- Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX, USA
| | - Ming-Chien Chyu
- Department of Pathology, School of Medicine, Texas Tech University, Lubbock, TX, USA
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Viellehner J, Potthast W. The Effect of Cycling-specific Vibration on Neuromuscular Performance. Med Sci Sports Exerc 2021; 53:936-944. [PMID: 33196607 DOI: 10.1249/mss.0000000000002565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE This study aimed to provide an understanding of how surface-induced vibrations in cycling interfere with short-term neuromuscular performance. METHODS The study was conducted as a cross-sectional single cohort trial. Thirty trained cyclists participated (mass = 75.9 ± 8.9 kg, body height = 1.82 ± 0.05 m, V˙O2max = 63 ± 6.8 mL·kg-1⋅min-1). The experimental intervention included a systematic variation of the two independent variables: vibration (Vib: front dropout, 44 Hz, 4.1 mm; rear dropout, 38Hz, 3.5 mm; NoVib) and cranking power (LOW, 137 ± 14 W; MED, 221 ± 18 W; HIGH, 331 ± 65 W) from individual low to submaximal intensity. Dependent variables were transmitted accelerations to the body, muscular activation (gastrocnemius medialis, gastrocnemius lateralis, soleus, vastus lateralis, vastus medialis, rectus femoris, triceps brachii, flexor carpi ulnaris, and lumbar erector spinae), heart rate, and oxygen consumption. RESULTS The main findings show that the root-mean-square of local accelerations increased with vibration at the lower extremities, the torso, and the arms-shoulder system. The activation of gastrocnemius medialis, gastrocnemius lateralis, soleus, triceps brachii, and flexor carpi ulnaris increased significantly with vibration. The activation of vastus lateralis increased significantly with vibration only at HIGH cranking power. Oxygen consumption (+2.7%) and heart rate (+5%-7%) increased significantly in the presence of vibration. CONCLUSIONS Vibration is a full-body phenomenon. However, the impact of vibration on propulsion is limited as the main propulsive muscles at the thigh are not majorly affected. The demands on the cardiopulmonary and respiratory system increased slightly in the presence of vibration.
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Affiliation(s)
- Josef Viellehner
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, GERMANY
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Effect of Whole-Body Vibration Training on Muscle Activation for Individuals with Knee Osteoarthritis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6671390. [PMID: 33855078 PMCID: PMC8019384 DOI: 10.1155/2021/6671390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 03/04/2021] [Accepted: 03/12/2021] [Indexed: 12/13/2022]
Abstract
Whole-body vibration (WBV) training may improve the strength of lower extremity muscles in patients with knee osteoarthritis (KOA), but the inconsistency in vibration parameters leads to differences in findings. This cross-sectional study is aimed at observing the effects of different vibration frequencies and knee flexion angles on the activation of lower extremity muscles in patients with KOA. Enrolled participants received WBV training at 0, 30, and 60° knee flexion angles with vibration frequencies of 0, 5, 10, and 20 Hz. Activation rates for vastus medialis, vastus lateralis, rectus femoris, biceps femoris, and semitendinosus in different combinations were collected through surface electromyography. The effects of frequency and angle on muscle activation rate were quantified by repeated measures ANOVA. Individual and synergistic effects of frequency and angle were also analysed. Twenty-six participants with KOA were included. Muscle activation increased with the vibration frequency in 0–20 Hz range and with knee flexion angle in 0–60° range. WBV training at 20 Hz was the most effective for knee muscle activation, and static squatting at 60° was the most suitable for WBV training. Therefore, WBV training can increase the activation rate of knee flexor and extensor muscles in patients with KOA, and the most efficient combination was 20 Hz vibration frequency and 60° knee flexion. When applying WBV to patients with KOA, individual differences and rehabilitation purposes should be considered in selecting vibration parameters and knee angle to effectively increase neuromuscular activity.
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Magoffin RD, Parcell AC, Hyldahl RD, Fellingham GW, Hopkins JT, Feland JB. Whole-Body Vibration as a Warm-up Before Exercise-Induced Muscle Damage on Symptoms of Delayed-Onset Muscle Soreness in Trained Subjects. J Strength Cond Res 2020; 34:1123-1132. [PMID: 30399118 DOI: 10.1519/jsc.0000000000002896] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Magoffin, RD, Parcell, AC, Hyldahl, RD, Fellingham, GW, Hopkins, JT, and Feland, JB. Whole-body vibration as a warm-up before exercise-induced muscle damage on symptoms of delayed-onset muscle soreness in trained subjects. J Strength Cond Res 34(4): 1123-1132, 2020-There is no clear scientific evidence that whole-body vibration (WBV) used as a warm-up before performing eccentric exercise mitigates delayed-onset muscle soreness (DOMS) and speeds strength loss recovery. These benefits were observed primarily in nonresistance-trained individuals. The aim of this study was to determine whether WBV could mitigate soreness and expedite strength recovery for resistance-trained individuals when used as a warm-up before eccentric exercise. Thirty resistance-trained males completed 300 maximal eccentric contractions of the quadriceps after warming up with (WBV) or without (CON) WBV. Both CON and WBV experienced significant isometric (26.3 and 30.2%, respectively) and dynamic (50.9 and 46.4%, respectively) strength loss immediately after exercise. Isometric strength was significantly depressed after 24 hours in the CON group (8.2% p < 0.02), but not in the WBV group (5.9% p = 0.7). Isometric strength was no longer significantly depressed after 48 hours in the CON group (6.1% p < 0.07) or the WBV group (4.1% p = 0.20). Dynamic strength was significantly decreased in both the CON and WBV groups at 24 hours (17.7% p < 0.001 and 15.5% p < 0.001, respectively) and 48 hours (17.1% p < 0.01 and 13.6% p < 0.002), but only significant for the CON at 1 week after exercise (8.6% p = 0.05). Pain as measured by a visual analog scale was significant in both groups at 24 and 48 hours after exercise, but WBV experienced significantly less soreness than the CON group after 24 hours (28 vs. 46 mm p < 0.01, respectively) and 48 hours (38 vs. 50 mm p < 0.01). Pain pressure threshold increased significantly in both groups, but there was no difference between groups. These results suggest the use of WBV before eccentric exercise mildly mitigates DOMS in trained individuals. Application of WBV can function as a quick mode of warm-up before resistance training and can decrease pain perception from DOMS. This may be beneficial to athletes undergoing a heavy strength training phase where DOMS is likely.
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Abstract
The aim of this study was to understand if and how surface-induced vibrations and road bike damping affect short-term neuromuscular performance in cycling. Thirty cyclists (mass 75.9 ± 8.9 kg, height 1.82 ± 0.05 m, Vo2max 63.0 ± 6.8 ml/min/kg) performed steady-state and maximum effort tests with and without vibration exposure (front dropout: 44 Hz, 4.1 mm; rear dropout: 38 Hz, 3.5 mm) on a damped and a nondamped bike. Transmitted accelerations to the musculoskeletal system, activation of lower extremity muscles (gast. med., soleus, vast. med., rec. fem.) and upper body muscles (erec. spinae, deltoideus, tric. brachii), oxygen uptake, heart rate and crank power output were measured. The main findings indicate a transmission of vibration to the whole body, but since no major propulsive muscles increase their activation with vibration, the systemic energy demand increases only marginally with vibration. Damping reduces vibrations at the upper body, which indicates an increase in comfort, but has no effect on the vibration transfer to the lower extremities. Therefore, road bike damping does not affect neuromuscular response of the propulsive muscle groups and energy demand. Consequently, short-term power output does not increase with damping.
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Affiliation(s)
- Josef Viellehner
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne , Cologne, Germany
| | - Wolfgang Potthast
- Institute of Biomechanics and Orthopaedics, German Sport University Cologne , Cologne, Germany
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Effect of Whole-Body Vibration Exercise on Power Profile and Bone Mineral Density in Postmenopausal Women With Osteoporosis: A Randomized Controlled Trial. J Manipulative Physiol Ther 2020; 43:384-393. [PMID: 32868028 DOI: 10.1016/j.jmpt.2019.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 10/29/2019] [Accepted: 12/05/2019] [Indexed: 02/08/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate the effect of whole-body vibration (WBV) on muscle work and bone mineral density (BMD) of the lumbar vertebrae and femur in postmenopausal women. METHODS Forty-three postmenopausal women with low BMD were randomly assigned to WBV and control groups. Both groups received calcium and vitamin D supplementations once daily, while the WBV group additionally received WBV exercise (twice/wk) for 24 successive weeks. Qualisys gait analysis system was used to measure hip power generation by hip extensors (H1S) and flexors (H3S), hip power absorption by hip flexors (H2S), knee power absorption by quadriceps during loading response (K1S) and preswing (K3S), knee power absorption by hamstring (K4S), knee power generation by quadriceps (K2S), ankle power absorption by dorsiflexors (A1S) and plantar flexors (A2S), and ankle power generation by plantar flexors (A3S). Also, dual-energy X-ray absorptiometry was used to measure BMD of the lumbar vertebrae and femur before and after the intervention. RESULTS There were significant increases (P < .05) in the hip muscle work (H1S, H2S, and H3S), knee muscle work (K1S, K2S, K3S, and K4S), ankle muscle work (A1S, A2S, and A3S) during gait, and BMD of the lumbar vertebrae and femur of the WBV group. However, there were no significant changes (P > .05) in the control group. The posttreatment values of the hip, knee, and ankle muscle work and BMD of the WBV group were significantly (P < .05) higher than the posttreatment values of the control group. CONCLUSION Whole-body vibration training improved the leg muscle work and lumbar and femoral BMD in postmenopausal women with low BMD.
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Manzi V, Iellamo F, Alashram AR, D'onofrio R, Padua E, Casasco M, Annino G. Effects of three different stretching protocols on hamstring muscle flexibility in professional soccer players: a randomized study. J Sports Med Phys Fitness 2020; 60:999-1004. [PMID: 32597617 DOI: 10.23736/s0022-4707.20.10562-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The current study aimed to investigate and compare the influences of global postural rieducation techniques (GPR), stretching exercises on a whole-body vibration platform (WBV), and static stretching exercises on hamstrings flexibility in elite soccer players. METHODS 24 professional soccer players were randomly assigned to either global postural re-education (N.=8), stretching on whole-body vibration group (N.=8) or static stretching (N.=8), during the first 4 weeks of the precompetitive season. Assessment of hamstring muscle flexibility was performed using a straight leg raise test. All participants were assessed three times: at baseline, at the end of the study protocol and 14 days after the end of the study protocol. RESULTS The short-term increase in hamstring muscle flexibility was observed in all 3 groups, without significant differences among groups. However, after 14 days from the end of the interventions only the WBV group maintained the flexibility level achieved just at the end of the protocol with no significant changes in both legs whereas a significant decrease in the SLRT in GPR and SS groups, in right and left legs (GPR, P=0.002; P=0.015; SS, P=0.0001; P=0.0001), was observed. CONCLUSIONS These results would suggest that GPR, static stretching on whole-body vibration and static stretching techniques all improve hamstring muscle flexibility, but only stretching on WBV maintains the effect over time in professional soccer players.
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Affiliation(s)
| | - Ferdinando Iellamo
- IRCCS San Raffaele Pisana, Rome, Italy.,Department of Clinical Sciences and Translational Medicine, School of Sports Medicine, Tor Vergata University, Rome, Italy
| | - Anas R Alashram
- Department of Medicine Systems, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy
| | - Rosario D'onofrio
- Scientific Society of Sport Rehabilitation and Posturology, Rome, Italy
| | - Elvira Padua
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele University, Rome, Italy
| | | | - Giuseppe Annino
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele University, Rome, Italy - .,Department of Medicine Systems, Faculty of Medicine and Surgery, Tor Vergata University, Rome, Italy
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Tantawy SA, Elgohary HM, Abdelbasset WK, Kamel DM. Effect of 4 weeks of whole-body vibration training in treating stress urinary incontinence after prostate cancer surgery: a randomised controlled trial. Physiotherapy 2019; 105:338-345. [DOI: 10.1016/j.physio.2018.07.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 07/25/2018] [Indexed: 01/09/2023]
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Hintzy F, Gregoire N, Samozino P, Chiementin X, Bertucci W, Rossi J. Effect of Thigh-Compression Shorts on Muscle Activity and Soft-Tissue Vibration During Cycling. J Strength Cond Res 2019; 33:2145-2152. [DOI: 10.1519/jsc.0000000000002402] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Grant MJ, Hawkes DH, McMahon J, Horsley I, Khaiyat OA. Vibration as an adjunct to exercise: its impact on shoulder muscle activation. Eur J Appl Physiol 2019; 119:1789-1798. [PMID: 31152231 DOI: 10.1007/s00421-019-04168-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 05/28/2019] [Indexed: 11/26/2022]
Abstract
PURPOSE There is an interest within elite sport in understanding the impact of a vibrating platform as an adjunct to exercise in the training and rehabilitation of throwing athletes. However, there has been no comprehensive evaluation of its impact on the rotator cuff muscles or its effect on the timing of shoulder muscle recruitment more globally. METHODS Twenty healthy participants were recruited with EMG recorded from 15 shoulder girdle muscles. Isometric shoulder flexion at 25% maximal voluntary contraction was performed in three testing scenarios [no vibration; whole body vibration (WBV); and arm vibration (AV)]. A press up and triceps dips with and without vibration were also performed. Muscular recruitment was assessed pre- and post-vibration exposure as participants initiated forward flexion. RESULTS Activation of the anterior deltoid (p = 0.002), serratus anterior (p = 0.004), and rotator cuff muscles (p = 0.004-0.022) occurred significantly earlier following exposure to vibration. Significantly greater activation was seen in the anterior, middle and posterior deltoid, upper, middle and lower trapezius, serratus anterior, teres major, latissimus dorsi, supraspinatus, and infraspinatus when the isometric contraction was performed with either WBV and/or AV (p = < 0.001-0.040). Similarly, increased activation was also demonstrated during the press up and triceps dips when performed with vibration. CONCLUSION The use of vibration as an adjunct to exercise provokes a near global increase in shoulder muscle activation level. Furthermore, exposure to vibration alters muscular recruitment improving readiness for movement. This has potential implications within elite sport for both training and game preparation; however, further longitudinal work is required.
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Affiliation(s)
- Michael J Grant
- Trauma and Orthopaedic Surgery, North West (Mersey) Deanery, Liverpool, UK
| | - David H Hawkes
- Trauma and Orthopaedic Surgery, North West (Mersey) Deanery, Liverpool, UK
- School of Health Sciences, Liverpool Hope University, Liverpool, UK
| | - Jessica McMahon
- School of Health Sciences, Liverpool Hope University, Liverpool, UK
| | - Ian Horsley
- England Institute for Sport, Sports City, Manchester, UK
| | - Omid A Khaiyat
- School of Health Sciences, Liverpool Hope University, Liverpool, UK.
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Huang M, Pang MYC. Muscle activity and vibration transmissibility during whole‐body vibration in chronic stroke. Scand J Med Sci Sports 2019; 29:816-825. [DOI: 10.1111/sms.13408] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/25/2019] [Accepted: 02/04/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Meizhen Huang
- Department of Rehabilitation Sciences The Hong Kong Polytechnic University Kowloon Hong Kong
| | - Marco Y. C. Pang
- Department of Rehabilitation Sciences The Hong Kong Polytechnic University Kowloon Hong Kong
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Munera M, Bertucci W, Duc S, Chiementin X. Analysis of muscular activity and dynamic response of the lower limb adding vibration to cycling. J Sports Sci 2017; 36:1465-1475. [DOI: 10.1080/02640414.2017.1398407] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Marcela Munera
- Biomedical Engineering Department, Colombian School on Engineering Julio Garavito, Bogotá, DC, Colombia
| | - William Bertucci
- GRESPI EA 4694, Université de Reims Champagne-Ardenne Moulin de la Housse, Reims Cedex, France
- PSMS Laboratory, Université de Reims Champagne-Ardenne Moulin de la Housse, Reims Cedex, France
| | - Sebastien Duc
- GRESPI EA 4694, Université de Reims Champagne-Ardenne Moulin de la Housse, Reims Cedex, France
- PSMS Laboratory, Université de Reims Champagne-Ardenne Moulin de la Housse, Reims Cedex, France
| | - Xavier Chiementin
- GRESPI EA 4694, Université de Reims Champagne-Ardenne Moulin de la Housse, Reims Cedex, France
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Lam FM, Chan PF, Liao LR, Woo J, Hui E, Lai CW, Kwok TC, Pang MY. Effects of whole-body vibration on balance and mobility in institutionalized older adults: a randomized controlled trial. Clin Rehabil 2017; 32:462-472. [PMID: 29019274 DOI: 10.1177/0269215517733525] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To investigate whether a comprehensive exercise program was effective in improving physical function among institutionalized older adults and whether adding whole-body vibration to the program conferred additional therapeutic benefits. DESIGN A single-blinded randomized controlled trial was conducted. SETTING This study was carried out in residential care units. PARTICIPANTS In total, 73 older adults (40 women, mean age: 82.3 ± 7.3 years) were enrolled into this study. INTERVENTIONS Participants were randomly allocated to one of the three groups: strength and balance program combined with whole-body vibration, strength and balance program without whole-body vibration, and social and recreational activities consisting of upper limb exercises only. All participants completed three training sessions per week for eight weeks. OUTCOME MEASURES Assessment of mobility, balance, lower limb strength, walking endurance, and self-perceived balance confidence were conducted at baseline and immediately after the eight-week intervention. Incidences of falls requiring medical attention were recorded for one year after the end of the training period. RESULTS A significant time × group interaction was found for lower limb strength (five-times-sit-to-stand test; P = 0.048), with the exercise-only group showing improvement (pretest: 35.8 ± 16.1 seconds; posttest: 29.0 ± 9.8 seconds), compared with a decline in strength among controls (pretest: 27.1 ± 10.4 seconds; posttest: 28.7 ± 12.3 seconds; P = 0.030). The exercise with whole-body vibration group had a significantly better outcome in balance confidence (pretest: 39.2 ± 29.0; posttest: 48.4 ± 30.6) than the exercise-only group (pretest: 35.9 ± 24.8; posttest: 38.2 ± 26.5; P = 0.033). CONCLUSION The exercise program was effective in improving lower limb strength among institutionalized older adults but adding whole-body vibration did not enhance its effect. Whole-body vibration may improve balance confidence without enhancing actual balance performance.
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Affiliation(s)
- Freddy Mh Lam
- 1 Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Philip Fl Chan
- 2 Physiotherapy Department, Shatin Hospital, Shatin, Hong Kong
| | - L R Liao
- 3 Department of Rehabilitation, Jiangsu Provincial Yixing Jiuru Rehabilitation Hospital, Yixing, China
| | - Jean Woo
- 4 Medical and Geriatric Unit, Shatin Hospital, Shatin, Hong Kong
| | - Elsie Hui
- 4 Medical and Geriatric Unit, Shatin Hospital, Shatin, Hong Kong
| | - Charles Wk Lai
- 2 Physiotherapy Department, Shatin Hospital, Shatin, Hong Kong
| | - Timothy Cy Kwok
- 5 Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Marco Yc Pang
- 1 Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong
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Rubio-Arias JÁ, Ramos-Campo DJ, Esteban P, Martínez F, Jiménez JF. Effect of 6-weeks WBVT on the behaviour of the lower limb muscle fibres during vertical jumping. J Sports Sci 2017; 36:398-406. [PMID: 28376674 DOI: 10.1080/02640414.2017.1309059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The purpose of the current study was to examine the effect of 6 weeks of whole body vibration training (WBVT) on body composition, muscle activity of the gastrocnemius and vastus lateralis, gastrocnemius muscle architecture (static and dynamic) and ground reaction forces (performance jump) during the take-off phase of a countermovement jump in young healthy adult males. A total of 33 men (23.31 ± 5.62 years) were randomly assigned to a whole body vibration group (experimental group, EGWBVT: n = 17; 22.11 ± 4.97 years) or a control group (CG: n = 16; 24.5 ± 6.27 years). The total duration of the intervention phase (WBVT) was 6 weeks with a frequency of 3 sessions per week. Statistically significant differences were observed (P ≤ 0.05) between pre- and post-test in the power peak (Δ 1.91 W · kg-1; P = 0.001), take-off velocity (0.1 cm · s-1; P = 0.002) and jump height (Δ 0.4 cm; P = 0.002) for EGWBVT. There were no statistically significant differences in any of the body composition and muscle architecture variables. Moreover, no significant differences were found between EGWBVT and CG nor changes in muscle activity during take-off phase of the gastrocnemius and vastus lateralis pre- versus post-training. This study suggests that a 6-week WBVT programme with increasing intensity improves jump performance but does not alter muscle activity nor muscle architecture in healthy young men.
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Affiliation(s)
- Jacobo Ángel Rubio-Arias
- a Department of Physical Activity and Sports Sciences, Faculty of Sports, UCAM , Catholic University San Antonio , Murcia , Spain.,b UCAM Research Center for High Performance Sport , Catholic University San Antonio , Murcia , Spain
| | - Domingo Jesús Ramos-Campo
- a Department of Physical Activity and Sports Sciences, Faculty of Sports, UCAM , Catholic University San Antonio , Murcia , Spain.,b UCAM Research Center for High Performance Sport , Catholic University San Antonio , Murcia , Spain
| | - Paula Esteban
- c Performance and Sport Rehabilitation Laboratory, Department of Sports Sciences and Physical Activity, Faculty of Physical Activity and Sports Sciences , University of Castilla-La Mancha , Toledo , Spain
| | - Fernando Martínez
- c Performance and Sport Rehabilitation Laboratory, Department of Sports Sciences and Physical Activity, Faculty of Physical Activity and Sports Sciences , University of Castilla-La Mancha , Toledo , Spain
| | - José Fernando Jiménez
- c Performance and Sport Rehabilitation Laboratory, Department of Sports Sciences and Physical Activity, Faculty of Physical Activity and Sports Sciences , University of Castilla-La Mancha , Toledo , Spain
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Da Silva U, Villagra HA, Oliva LL, Marconi NF. EMG activity of upper limb on spinal cord injury individuals during whole-body vibration. Physiol Int 2017; 103:361-367. [PMID: 28229644 DOI: 10.1556/2060.103.2016.3.10] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Whole-body vibration (WBV) has shown positive results increasing electromyographic (EMG) activity and strength in a healthy population when applied to upper and lower limbs. The aim of this study was to verify if WBV increases the EMG signal of the upper limb muscles in patients with spinal cord injury (SCI). For this study, 15 patients with SCI were selected and one single session of WBV was applied to the upper limb. Five sessions of 30 s at 30 Hz were applied and EMG of anterior deltoid and forearm muscles was measured. The results show that EMG activity had a significant increase during WBV session compared with baseline muscle activity. These results support WBV as an efficient tool to increase the upper body EMG in individuals with SCI.
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Affiliation(s)
- Uslg Da Silva
- 1 Department of Education, Physical Activity and Human Motor Control, Autonomous University of Madrid , Madrid, Spain
| | - H A Villagra
- 1 Department of Education, Physical Activity and Human Motor Control, Autonomous University of Madrid , Madrid, Spain
| | - L L Oliva
- 2 Department of Sciences, Physiotherapy and Rehabilitation, Universidad Rey Juan Carlos , Madrid, Spain
| | - N F Marconi
- 3 Physical Therapy Department, College of Health and Human Sciences, Western Carolina University , Cullowhee, NC, USA
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21
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Older adults show higher increases in lower-limb muscle activity during whole-body vibration exercise. J Biomech 2017; 52:55-60. [DOI: 10.1016/j.jbiomech.2016.12.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 08/03/2016] [Accepted: 12/09/2016] [Indexed: 11/24/2022]
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22
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Liao LR, Pang MYC. Effect of Whole-Body Vibration on Neuromuscular Activation of Leg Muscles During Dynamic Exercises in Individuals With Stroke. J Strength Cond Res 2016; 31:1954-1962. [PMID: 28002180 DOI: 10.1519/jsc.0000000000001761] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Liao, L-R, and Pang, MYC. Effect of whole-body vibration on neuromuscular activation of leg muscles during dynamic exercises in individuals with stroke. J Strength Cond Res 31(7): 1954-1962, 2017-This study examined the leg muscle activity during exposure to different whole-body vibration (WBV) intensities while performing various dynamic exercises in patients with chronic stroke. Thirty patients with chronic stroke performed a series of dynamic exercises under 3 conditions: (a) low-intensity WBV (peak acceleration: 0.96 units of gravity of Earth [g]), (b) high-intensity WBV (1.61 g), and (c) no WBV. Neuromuscular activation was recorded with surface electromyography (EMG) on bilateral biceps femoris (BF), vastus lateralis, tibialis anterior (TA), and gastrocnemius (GS) in both legs and was reported as EMGrms (root mean square) normalized to % maximal voluntary contraction. The EMG amplitude of all tested muscles was significantly increased by adding WBV during dynamic exercise (p ≤ 0.05). The EMG amplitude of BF, TA, and GS during exposure to high-intensity WBV was significantly greater than low-intensity WBV (p ≤ 0.05). The increase in EMG amplitude caused by WBV was exercise dependent in GS and TA (p ≤ 0.05). The EMG response to WBV in GS and BF in the affected leg was significantly greater than the corresponding muscles in the unaffected leg (p ≤ 0.05). The extent of WBV-induced muscle activity was dependent on the dynamic exercise, WBV intensity, and muscle trained among patients with chronic stroke.
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Affiliation(s)
- Lin-Rong Liao
- 1Department of Rehabilitation, Jiangsu Provincial Yixing Jiuru Rehabilitation Hospital, Yixing, China; and 2Department of Rehabilitation Sciences, Hong Kong Polytechnic University, Hong Kong, China
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Wei N, Pang MYC, Ng SSM, Ng GYF. Optimal frequency/time combination of whole-body vibration training for improving muscle size and strength of people with age-related muscle loss (sarcopenia): A randomized controlled trial. Geriatr Gerontol Int 2016; 17:1412-1420. [DOI: 10.1111/ggi.12878] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 06/10/2016] [Accepted: 06/22/2016] [Indexed: 01/11/2023]
Affiliation(s)
- Ning Wei
- Sports Training Laboratory, Department of Rehabilitation Sciences; The Hong Kong Polytechnic University; Hung Hom Hong Kong SAR
| | - Marco YC Pang
- Sports Training Laboratory, Department of Rehabilitation Sciences; The Hong Kong Polytechnic University; Hung Hom Hong Kong SAR
| | - Shamay SM Ng
- Sports Training Laboratory, Department of Rehabilitation Sciences; The Hong Kong Polytechnic University; Hung Hom Hong Kong SAR
| | - Gabriel YF Ng
- Sports Training Laboratory, Department of Rehabilitation Sciences; The Hong Kong Polytechnic University; Hung Hom Hong Kong SAR
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Marín PJ, García Rioja J, Bernardo-Filho M, Hazell TJ. Effects of Different Magnitudes of Whole-Body Vibration on Dynamic Squatting Performance. J Strength Cond Res 2016; 29:2881-7. [PMID: 25807029 DOI: 10.1519/jsc.0000000000000940] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The purpose of this study was to examine the effects (a) of different whole-body vibration (WBV) accelerations when applied simultaneously during a set of squats on performance and perceived exertion and (b) of different linear increases and decreases of vibrations during the squats. It is a randomized, crossover experimental design. Undergraduate students (3 female; 16 male) participated. Each participant completed 5 laboratory sessions in this study (4 familiarization and 1 test session). The test session then had each participant complete one 20-second set of dynamics quarter-squats for 5 separate conditions followed by 5 minutes of rest. Squatting was performed at maximum speed from full extension knee with plantar-flexion ankle to a knee angle of 70° (0° = anatomic position) with dorsiflexion ankle. All sets were performed on the WBV platform in random order, where the 5 different conditions were (a) no WBV-sham, (b) 30 Hz (30 Hz low amplitude), (c) 50 Hz (50 Hz high amplitude), (d) 30-50 Hz (increasing frequency from 30 to 50 Hz; 1 Hz per second with high amplitude), and (e) 50-30 Hz (decreasing frequency from 50 to 30 Hz; 1 Hz per second). There was a significant decrease in the mean velocity of squatting performed during the 30- to 50-Hz condition compared with all other conditions (p ≤ 0.05). There were a significantly lower amount of repetitions performed during the 30- to 50-Hz exposure compared with the no-WBV and 30-Hz conditions. There was a significantly lower Rating of Perceived Exertion (RPE) during the 30-Hz condition compared with the no-WBV, 50-Hz, 30-50-Hz, and 50-30-Hz conditions.
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Affiliation(s)
- Pedro J Marín
- 1Laboratory of Physiology, European University Miguel de Cervantes, Valladolid, Spain; 2CYMO Research Institute, Valladolid, Spain; 3Department of Biophysics and Biometry, Biology Institute Roberto Alcantara Gomes, Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil; and 4Department of Kinesiology & Physical Education, Wilfrid Laurier University, Waterloo, Ontario, Canada
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Energy Expenditure and Substrate Oxidation in Response to Side-Alternating Whole Body Vibration across Three Commonly-Used Vibration Frequencies. PLoS One 2016; 11:e0151552. [PMID: 26974147 PMCID: PMC4790855 DOI: 10.1371/journal.pone.0151552] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 03/01/2016] [Indexed: 12/03/2022] Open
Abstract
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. Conclusion No relationship could be demonstrated between EE and VF in the range of 30-50Hz, and substrate oxidation did not change in response to WBV. Furthermore, the thermogenic effect of intermittent WBV, whilst robust, was quantitatively small (<2 METS).
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The effect of vertical whole-body vibration on lower limb muscle activation in elderly adults: Influence of vibration frequency, amplitude and exercise. Maturitas 2016; 88:59-64. [PMID: 27105700 DOI: 10.1016/j.maturitas.2016.03.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 02/23/2016] [Accepted: 03/10/2016] [Indexed: 12/31/2022]
Abstract
OBJECTIVE This study aimed to investigate how whole-body vibration (WBV) and exercise and their interactions influenced leg muscle activity in elderly adults. STUDY DESIGN An experimental study with repeated measures design that involved a group of ambulatory, community-dwelling elderly adults (n=30; 23 women; mean age=61.4±5.3years). MAIN OUTCOME MEASURES Muscle activity of the vastus lateralis (VL), biceps femoris (BF), tibialis anterior (TA), and gastrocnemius (GS) was measured by surface electromyography (EMG), while participants were performing seven different exercises during 4 WBV conditions (condition 1: frequency=30Hz, amplitude=0.6mm, intensity=2.25 units of Earth's gravity (g); condition 2: 30Hz, 0.9mm, 3.40g; condition 3: 40Hz, 0.6mm, 3.65g; condition 4: 40Hz, 0.9mm, 5.50g) and a no-WBV condition in a single experimental session. RESULTS Significantly greater muscle activity was recorded in VL (3%-148%), BF (16%-202%), and GS (19% -164%) when WBV was added to the exercises, compared with the same exercises without WBV (p≤0.015). The effect of vibration intensity on EMG amplitude was exercise-dependent in VL (p=0.002), and this effect was marginally significant in GS (p=0.052). The EMG activity induced by the four WBV intensities was largely similar, and was the most pronounced during static erect standing and static single-leg standing. CONCLUSIONS The EMG amplitude of majority of leg muscles tested was significantly greater during WBV exposure compared with the no-WBV condition. Low-intensity WBV can induce muscle activity as effectively as higher-intensity protocols, and may be the preferred choice for frail elderly adults.
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Colson S, Roffino S, Mutin-Carnino M, Carnino A, Petit PD. The effect of dynamic whole-body vibration warm-up on lower extremity performance. Sci Sports 2016. [DOI: 10.1016/j.scispo.2015.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Effects of Vibration Intensity, Exercise, and Motor Impairment on Leg Muscle Activity Induced by Whole-Body Vibration in People With Stroke. Phys Ther 2015; 95:1617-27. [PMID: 26023219 DOI: 10.2522/ptj.20140507] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 05/20/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Whole-body vibration (WBV) has increasingly been used as an adjunct treatment in neurological rehabilitation. However, how muscle activation level changes during exposure to different WBV protocols in individuals after stroke remains understudied. OBJECTIVE The purpose of this study was to examine the influence of WBV intensity on the magnitude of biceps femoris (BF) and tibialis anterior (TA) muscle activity and its interaction with exercise and with severity of motor impairment and spasticity among individuals with chronic stroke. METHODS Each of the 36 individuals with chronic stroke (mean age=57.3 years, SD=10.7) performed 8 different static exercises under 3 WBV conditions: (1) no WBV, (2) low-intensity WBV (frequency=20 Hz, amplitude=0.60 mm, peak acceleration=0.96g), and (3) high-intensity WBV (30 Hz, 0.44 mm, 1.61g). The levels of bilateral TA and BF muscle activity were recorded using surface electromyography (EMG). RESULTS The main effect of intensity was significant. Exposure to the low-intensity and high-intensity protocols led to a significantly greater increase in normalized BF and TA muscle electromyographic magnitude in both legs compared with no WBV. The intensity × exercise interaction also was significant, suggesting that the WBV-induced increase in EMG activity was exercise dependent. The EMG responses to WBV were similar between the paretic and nonparetic legs and were not associated with level of lower extremity motor impairment and spasticity. LIMITATIONS Leg muscle activity was measured during static exercises only. CONCLUSIONS Adding WBV during exercise significantly increased EMG activity in the TA and BF muscles. The EMG responses to WBV in the paretic and nonparetic legs were similar and were not related to degree of motor impairment and spasticity. The findings are useful for guiding the design of WBV training protocols for people with stroke.
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Comparison of sEMG processing methods during whole-body vibration exercise. J Electromyogr Kinesiol 2015; 25:833-40. [PMID: 26565598 DOI: 10.1016/j.jelekin.2015.10.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 08/12/2015] [Accepted: 10/12/2015] [Indexed: 11/23/2022] Open
Abstract
The objective was to investigate the influence of surface electromyography (sEMG) processing methods on the quantification of muscle activity during whole-body vibration (WBV) exercises. sEMG activity was recorded while the participants performed squats on the platform with and without WBV. The spikes observed in the sEMG spectrum at the vibration frequency and its harmonics were deleted using state-of-the-art methods, i.e. (1) a band-stop filter, (2) a band-pass filter, and (3) spectral linear interpolation. The same filtering methods were applied on the sEMG during the no-vibration trial. The linear interpolation method showed the highest intraclass correlation coefficients (no vibration: 0.999, WBV: 0.757-0.979) with the comparison measure (unfiltered sEMG during the no-vibration trial), followed by the band-stop filter (no vibration: 0.929-0.975, WBV: 0.661-0.938). While both methods introduced a systematic bias (P < 0.001), the error increased with increasing mean values to a higher degree for the band-stop filter. After adjusting the sEMG(RMS) during WBV for the bias, the performance of the interpolation method and the band-stop filter was comparable. The band-pass filter was in poor agreement with the other methods (ICC: 0.207-0.697), unless the sEMG(RMS) was corrected for the bias (ICC ⩾ 0.931, %LOA ⩽ 32.3). In conclusion, spectral linear interpolation or a band-stop filter centered at the vibration frequency and its multiple harmonics should be applied to delete the artifacts in the sEMG signals during WBV. With the use of a band-stop filter it is recommended to correct the sEMG(RMS) for the bias as this procedure improved its performance.
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Lienhard K, Vienneau J, Nigg S, Meste O, Colson SS, Nigg BM. Relationship Between Lower Limb Muscle Activity and Platform Acceleration During Whole-Body Vibration Exercise. J Strength Cond Res 2015; 29:2844-53. [DOI: 10.1519/jsc.0000000000000927] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Di Giminiani R, Masedu F, Padulo J, Tihanyi J, Valenti M. The EMG activity-acceleration relationship to quantify the optimal vibration load when applying synchronous whole-body vibration. J Electromyogr Kinesiol 2015; 25:853-9. [PMID: 26443890 DOI: 10.1016/j.jelekin.2015.09.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 09/04/2015] [Accepted: 09/11/2015] [Indexed: 10/23/2022] Open
Abstract
PURPOSE To date are lacking methodological approaches to individualizing whole-body vibration (WBV) intensity. The aim of this study was: (1) to determine the surface-electromyography-root-mean-square (sEMG(RMS))-acceleration load relationship in the vastus lateralis (VL), vastus medialis (VM), rectus femoris (RF), lateral gastrocnemius (LG) muscles during synchronous WBV, and (2) to assess the reliability of the acceleration corresponding to the maximal sEMG(RMS). METHODS Twenty-five sportsman voluntarily took part in this study with a single-group, repeated-measures design. All subjects postured themselves in an isometric half-squat during nine trials in the following conditions: no vibrations and random vibrations of different acceleration loads (from 0.12 to 5.72 g). RESULTS The sEMG(RMS) were dependent on the acceleration loads in the VL (p = 0.0001), LG (p = 0.0001) and VM (p = 0.011) muscles; while RF was not affected by the acceleration loads (p = 0.508). The comparisons among the sEMG(RMS)-accelerations relationships revealed a significant difference between the LG and the others muscles (p = 0.001). No significant difference was found between the different thigh muscles (p > 0.05). The intra-class correlation coefficient ranged from 0.87 to 0.99 for the measurements performed on the LG, VL and VM. CONCLUSIONS The sEMG(RMS)-acceleration relationship in the VL, VM and LG is a reliable test to individualize the WBV intervention.
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Affiliation(s)
- Riccardo Di Giminiani
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy.
| | - Francesco Masedu
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
| | - Johnny Padulo
- University eCampus, Novedrate, COMO, Italy; Tunisian Research Laboratory "Sport Performance Optimization" National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
| | - Jozsef Tihanyi
- Department of Biomechanics, Faculty of Physical Education and Sport Sciences, Semmelweis University, Budapest, Hungary
| | - Marco Valenti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy
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