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Mohamed AA. Development of air therapy as a novel therapeutic branch in the field of rehabilitation. PHYSIOTHERAPY RESEARCH INTERNATIONAL 2024; 29:e2122. [PMID: 39152768 DOI: 10.1002/pri.2122] [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: 03/29/2024] [Revised: 07/01/2024] [Accepted: 08/08/2024] [Indexed: 08/19/2024]
Abstract
BACKGROUND AND PURPOSE Developing technology in the field of rehabilitation is vital to accelerate recovery and decrease the side effects of current modalities. Rehabilitation is a challenging science in which the main challenge is not just treating the patient but also to shorten the rehabilitation time and avoid harmful effects. Thus, this review demonstrates the possible design and effects of air therapy as a novel treatment branch besides hydrotherapy, electrotherapy, and manual therapy in the field of rehabilitation. METHODS The search was conducted over clinical trials, literature reviews, and systematic reviews on the possible effects of treatments that may have similar effects to the newly developed air therapy. This search was conducted in the Web of Science, Scopus, EBSCO, and Medline databases. RESULTS Air therapy could be used to improve the function of mechanoreceptors, improve circulation and microcirculation, decrease pain, the release of trigger points, regain the elasticity of soft tissues, treat acute and chronic inflammations, decrease muscle cramps and spasticity, strengthen muscle, and decrease muscle fatigue and Decreasing muscle fatigue and delayed muscle soreness. CONCLUSION Air therapy is a novel treatment modality that can be used effectively in the field of rehabilitation. Air therapy could be a valuable and safe treatment in rehabilitation.
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Affiliation(s)
- Ayman A Mohamed
- Basic Sciences Department, Faculty of Physical Therapy, Beni-suef University, Beni-Suef, Egypt
- Basic Sciences Department, Faculty of Physical Therapy, Nahda University, Beni-Suef, Egypt
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Amiez N, Martin A, Gaveau J, Julliand S, Papaxanthis C, Paizis C. Local vibration induces changes in spinal and corticospinal excitability in vibrated and antagonist muscles. J Neurophysiol 2024; 131:379-393. [PMID: 38198664 DOI: 10.1152/jn.00258.2023] [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: 06/30/2023] [Revised: 12/21/2023] [Accepted: 01/09/2024] [Indexed: 01/12/2024] Open
Abstract
Local vibration (LV) applied over the muscle tendon constitutes a powerful stimulus to activate the muscle spindle primary (Ia) afferents that project to the spinal level and are conveyed to the cortical level. This study aimed to identify the neuromuscular changes induced by a 30-min LV-inducing illusions of hand extension on the vibrated flexor carpi radialis (FCR) and the antagonist extensor carpi radialis (ECR) muscles. We studied the change of the maximal voluntary isometric contraction (MVIC, experiment 1) for carpal flexion and extension, motor-evoked potentials (MEPs, experiment 2), cervicomedullary motor-evoked potentials (CMEPs, experiment 2), and Hoffmann's reflex (H-reflex, experiment 3) for both muscles at rest. Measurements were performed before (PRE) and at 0, 30, and 60 min after LV protocol. A lasting decrease in strength was only observed for the vibrated muscle. The reduction in CMEPs observed for both muscles seems to support a decrease in alpha motoneurons excitability. In contrast, a slight decrease in MEPs responses was observed only for the vibrated muscle. The MEP/CMEP ratio increase suggested greater cortical excitability after LV for both muscles. In addition, the H-reflex largely decreased for the vibrated and the antagonist muscles. The decrease in the H/CMEP ratio for the vibrated muscle supported both pre- and postsynaptic causes of the decrease in the H-reflex. Finally, LV-inducing illusions of movement reduced alpha motoneurons excitability for both muscles with a concomitant increase in cortical excitability.NEW & NOTEWORTHY Spinal disturbances confound the interpretation of excitability changes in motor areas and compromise the conclusions reached by previous studies using only a corticospinal marker for both vibrated and antagonist muscles. The time course recovery suggests that the H-reflex perturbations for the vibrated muscle do not only depend on changes in alpha motoneurons excitability. Local vibration induces neuromuscular changes in both vibrated and antagonist muscles at the spinal and cortical levels.
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Affiliation(s)
- Nicolas Amiez
- Inserm UMR 1093-CAPS, UFR des Sciences du Sport, Institut National de la Santé et de la Recherche Médicale: UMR 1093, Université de Bourgogne, Dijon, France
| | - Alain Martin
- Inserm UMR 1093-CAPS, UFR des Sciences du Sport, Institut National de la Santé et de la Recherche Médicale: UMR 1093, Université de Bourgogne, Dijon, France
| | - Jérémie Gaveau
- Inserm UMR 1093-CAPS, UFR des Sciences du Sport, Institut National de la Santé et de la Recherche Médicale: UMR 1093, Université de Bourgogne, Dijon, France
| | - Sophie Julliand
- Inserm UMR 1093-CAPS, UFR des Sciences du Sport, Institut National de la Santé et de la Recherche Médicale: UMR 1093, Université de Bourgogne, Dijon, France
| | - Charalambos Papaxanthis
- Inserm UMR 1093-CAPS, UFR des Sciences du Sport, Institut National de la Santé et de la Recherche Médicale: UMR 1093, Université de Bourgogne, Dijon, France
| | - Christos Paizis
- Inserm UMR 1093-CAPS, UFR des Sciences du Sport, Institut National de la Santé et de la Recherche Médicale: UMR 1093, Université de Bourgogne, Dijon, France
- Centre d'Expertise de la Performance, UFR des Sciences du Sport, Université de Bourgogne, Dijon, France
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Blazevich AJ, Fletcher JR. More than energy cost: multiple benefits of the long Achilles tendon in human walking and running. Biol Rev Camb Philos Soc 2023; 98:2210-2225. [PMID: 37525526 DOI: 10.1111/brv.13002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 08/02/2023]
Abstract
Elastic strain energy that is stored and released from long, distal tendons such as the Achilles during locomotion allows for muscle power amplification as well as for reduction of the locomotor energy cost: as distal tendons perform mechanical work during recoil, plantar flexor muscle fibres can work over smaller length ranges, at slower shortening speeds, and at lower activation levels. Scant evidence exists that long distal tendons evolved in humans (or were retained from our more distant Hominoidea ancestors) primarily to allow high muscle-tendon power outputs, and indeed we remain relatively powerless compared to many other species. Instead, the majority of evidence suggests that such tendons evolved to reduce total locomotor energy cost. However, numerous additional, often unrecognised, advantages of long tendons may speculatively be of greater evolutionary advantage, including the reduced limb inertia afforded by shorter and lighter muscles (reducing proximal muscle force requirement), reduced energy dissipation during the foot-ground collisions, capacity to store and reuse the muscle work done to dampen the vibrations triggered by foot-ground collisions, reduced muscle heat production (and thus core temperature), and attenuation of work-induced muscle damage. Cumulatively, these effects should reduce both neuromotor fatigue and sense of locomotor effort, allowing humans to choose to move at faster speeds for longer. As these benefits are greater at faster locomotor speeds, they are consistent with the hypothesis that running gaits used by our ancestors may have exerted substantial evolutionary pressure on Achilles tendon length. The long Achilles tendon may therefore be a singular adaptation that provided numerous physiological, biomechanical, and psychological benefits and thus influenced behaviour across multiple tasks, both including and additional to locomotion. While energy cost may be a variable of interest in locomotor studies, future research should consider the broader range of factors influencing our movement capacity, including our decision to move over given distances at specific speeds, in order to understand more fully the effects of Achilles tendon function as well as changes in this function in response to physical activity, inactivity, disuse and disease, on movement performance.
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Affiliation(s)
- Anthony J Blazevich
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, 270 Joondalup Drive, Joondalup, Western Australia, Australia
| | - Jared R Fletcher
- Department of Health and Physical Education, Mount Royal University, 4825 Mount Royal Gate SW, Calgary, Alberta, Canada
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Lapole T, Mesquita RNO, Baudry S, Souron R, Brownstein CG, Rozand V. Can local vibration alter the contribution of persistent inward currents to human motoneuron firing? J Physiol 2023; 601:1467-1482. [PMID: 36852473 DOI: 10.1113/jp284210] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/23/2023] [Indexed: 03/01/2023] Open
Abstract
The response of spinal motoneurons to synaptic input greatly depends on the activation of persistent inward currents (PICs), which in turn are enhanced by the neuromodulators serotonin and noradrenaline. Local vibration (LV) induces excitatory Ia input onto motoneurons and may alter neuromodulatory inputs. Therefore, we investigated whether LV influences the contribution of PICs to motoneuron firing. This was assessed in voluntary contractions with concurrent, ongoing LV, as well as after a bout of prolonged LV. High-density surface electromyograms (HD-EMG) of the tibialis anterior were recorded with a 64-electrode matrix. Twenty males performed isometric, triangular, dorsiflexion contractions to 20% and 50% of maximal torque at baseline, during LV of the tibialis anterior muscle, and after 30-min of LV. HD-EMG signals were decomposed, and motor units tracked across time points to estimate PICs through a paired motor unit analysis, which quantifies motor unit recruitment-derecruitment hysteresis (ΔF). During ongoing LV, ΔF was lower for both 20% and 50% ramps. Although significant changes in ΔF were not observed after prolonged LV, a differential effect across the motoneuron pool was observed. This study demonstrates that PICs can be non-pharmacologically modulated by LV. Given that LV leads to reflexive motor unit activation, it is postulated that lower PIC contribution to motoneuron firing during ongoing LV results from decreased neuromodulatory inputs associated with lower descending corticospinal drive. A differential effect in motoneurons of different recruitment thresholds after prolonged LV is provocative, challenging the interpretation of previous observations and motivating future investigations. KEY POINTS: Neuromodulatory inputs from the brainstem influence motoneuron intrinsic excitability through activation of persistent inward currents (PICs). PICs make motoneurons more responsive to excitatory input. We demonstrate that vibration applied on the muscle modulates the contribution of PICs to motoneuron firing, as observed through analysis of the firing of single motor units. The effects of PICs on motoneuron firing were lower when vibration was concurrently applied during voluntary ramp contractions, likely due to lower levels of neuromodulation. Additionally, prolonged exposure to vibration led to differential effects of lower- vs. higher-threshold motor units on PICs, with lower-threshold motor units tending to present an increased and higher-threshold motor units a decreased contribution of PICs to motoneuron firing. These results demonstrate that muscle vibration has the potential to influence the effects of neuromodulation on motoneuron firing. The potential of using vibration as a non-pharmacological neuromodulatory intervention should be further investigated.
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Affiliation(s)
- T Lapole
- Université Jean Monnet Saint-Etienne, Lyon 1, Université Savoie Mont-Blanc, Laboratoire Interuniversitaire de Biologie de la Motricité, Saint-Etienne, France
| | - R N O Mesquita
- Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
- School of Medical and Health Sciences, Edith Cowan University, Perth, Australia
- Neuroscience Research Australia, Sydney, Australia
| | - S Baudry
- Laboratory of Applied Biology, Research Unit in Applied Neurophysiology (LABNeuro), Faculty of Motor Sciences, Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - R Souron
- Movement-Interactions-Performance, MIP, UR 4334, Nantes Université, 44000 Nantes, France
| | - C G Brownstein
- Université Jean Monnet Saint-Etienne, Lyon 1, Université Savoie Mont-Blanc, Laboratoire Interuniversitaire de Biologie de la Motricité, Saint-Etienne, France
| | - V Rozand
- Université Jean Monnet Saint-Etienne, Lyon 1, Université Savoie Mont-Blanc, Laboratoire Interuniversitaire de Biologie de la Motricité, Saint-Etienne, France
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Kennouche D, Varesco G, Espeit L, Féasson L, Souron R, Rozand V, Millet GY, Lapole T. Acute effects of quadriceps muscle versus tendon prolonged local vibration on force production capacities and central nervous system excitability. Eur J Appl Physiol 2022; 122:2451-2461. [PMID: 36001143 DOI: 10.1007/s00421-022-05028-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 08/17/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE The present study aimed to directly compare the effects of 30 min muscle (VIBmuscle) vs. tendon (VIBtendon) local vibration (LV) to the quadriceps on maximal voluntary isometric contraction (MVIC) and rate of torque development (RTD) as well as on central nervous system excitability (i.e. motoneuron and cortical excitability). METHODS Before (PRE) and immediately after (POST) LV applied to the quadriceps muscle or its tendon, we investigated MVIC and RTD (STUDY #1; n = 20) or vastus lateralis (VL), vastus medialis (VM) and rectus femoris (RF) electromyography responses to thoracic electrical stimulation (TMEPs; motoneuron excitability) and transcranial magnetic stimulation (MEPs; corticospinal excitability) (STUDY #2; n = 17). MEP/TMEP ratios were further calculated to quantify changes in cortical excitability. RESULTS MVIC decreased at POST (P = 0.017) without any difference between VIBtendon and VIBmuscle, while RTD decreased for VIBtendon (P = 0.013) but not VIBmuscle. TMEP amplitudes were significantly decreased for all muscles (P = 0.014, P < 0.001 and P = 0.004 for VL, VM and RF, respectively) for both LV sites. While no changes were observed for MEP amplitude, MEP/TMEP ratios increased at POST for VM and RF muscles (P = 0.009 and P = 0.013, respectively) for both VIBtendon and VIBmuscle. CONCLUSION The present results suggest that prolonged muscle and tendon LV are similarly effective in modulating central nervous system excitability and decreasing maximal force. Yet, altered explosive performance after tendon but not muscle LV suggests greater neural alterations when tendons are vibrated.
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Affiliation(s)
- Djahid Kennouche
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France
| | - Giorgio Varesco
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France
| | - Loïc Espeit
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France
| | - Léonard Féasson
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France.,Unité de Myologie, Centre Référent Maladies Neuromusculaires - Euro-NMD, Centre Hospitalier Universitaire de Saint-Etienne, 42055, Saint Etienne, France
| | - Robin Souron
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France.,UFR STAPS de Toulon, Unité de Recherche IAPS (N°201723207F), UFR STAPS de Toulon, Toulon, France
| | - Vianney Rozand
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France
| | - Guillaume Y Millet
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France.,Institut Universitaire de France (IUF), Paris, France
| | - Thomas Lapole
- Univ Lyon, UJM-Saint-Etienne, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-42023, Saint-Etienne, France.
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Zhang Y, Xu P, Deng Y, Duan W, Cui J, Ni C, Wu M. Effects of vibration training on motor and non-motor symptoms for patients with multiple sclerosis: A systematic review and meta-analysis. Front Aging Neurosci 2022; 14:960328. [PMID: 36034149 PMCID: PMC9415382 DOI: 10.3389/fnagi.2022.960328] [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: 06/02/2022] [Accepted: 07/01/2022] [Indexed: 11/15/2022] Open
Abstract
Background Vibration therapy is one of the rehabilitation programs that may be effective in treating both motor and non-motor symptoms in Multiple Sclerosis patients. We conducted a comprehensive systematic review and meta-analysis to assess the effects of vibration therapy on motor and non-motor symptoms (functional mobility, balance, walking endurance, gait speed, fatigue, and quality of life) of this population. Methods A systematic search of PubMed, Embase, the Cochrane Library, Web of Science, Physiotherapy Evidence Database, Scopus, Google Search Engine, and the China National Knowledge Infrastructure (CNKI). Two reviewers independently assessed the study quality. Results Fourteen studies with 393 participants were finally included in the meta-analysis. The pooled results showed that vibration therapy had a significant advantage over the control intervention in improving balance function [mean difference (MD) = 2.04, 95% confidence interval (CI): 0.24-3.84, P = 0.03], and walking endurance (SMD = 0.34, 95% CI: 0.07-0.61, P = 0.01). Meanwhile, the degree of disability subgroup analysis revealed that the Expanded Disability Status Scale (EDSS) score (3.5-6) significantly improved functional mobility (MD: -1.18, 95% CI: -2.09 to 0.28, P = 0.01) and balance function (MD: 3.04, 95% CI: 0.49-5.59, P = 0.02) compared with the control group, and the EDSS (0-3.5) were more beneficial in walking endurance. The duration subgroup analysis indicated a significant difference in the effect of the duration (<4 weeks) on enhancing walking endurance (SMD: 0.46, 95% CI: 0.04-0.87, P = 0.03). However, no significant improvement was found in functional mobility, gait speed, fatigue, and quality of life. Conclusion Vibration therapy may improve balance function and walking endurance, and the degree of disability and duration of intervention may affect outcomes. The evidence for the effects of vibration therapy on functional mobility, gait speed, fatigue, and quality of life remains unclear. More trials with rigorous study designs and a larger sample size are necessary to provide this evidence. Systematic Review Registration PROSPERO, https://www.crd.york.ac.uk/prospero/#recordDetails, identifier: CRD42022326852.
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Affiliation(s)
| | | | | | | | | | | | - Ming Wu
- Department of Rehabilitation Medicine, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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Lupowitz L. Vibration Therapy - A Clinical Commentary. Int J Sports Phys Ther 2022; 17:984-987. [PMID: 36237646 PMCID: PMC9528696 DOI: 10.26603/001c.36964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/01/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Lewis Lupowitz
- Orlin Cohen Orthopedic Group an affiliate of Northwell Health
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Reece TM, Arnold CE, Herda TJ. An examination of motor unit firing rates during steady torque of maximal efforts with either an explosive or slower rate of torque development. Exp Physiol 2021; 106:2517-2530. [PMID: 34676609 DOI: 10.1113/ep089808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 10/11/2021] [Indexed: 12/29/2022]
Abstract
NEW FINDINGS What is the central question of this study? The aim was to explore agonist and antagonist motor unit firing rates during maximal efforts performed with either an explosive or a slower rate of torque development. What is the main finding and its importance? The antagonist muscle presented a motor unit firing rate relationship similar to the agonist muscle. Additionally, the motor units of both muscles exhibited higher firing rates during explosive maximal contractions than during maximal contractions performed at a slower rate of torque development. These results could prove useful to future research analysing the effects of age, disease, resistance training and/or fatigue-related alterations to motor unit firing rates. ABSTRACT The primary purpose of the present study was to examine motor unit (MU) firing rates in agonist and antagonist muscles during periods of steady, maximal efforts using explosive and slower rates of torque development. A secondary purpose was to analyse the MU firing rate versus action potential amplitude relationships of the agonist and antagonist muscles during maximal efforts. Thirteen subjects (mean ± SD; age, 21.2 ± 3.6 years; mass 81.1 ± 21.3 kg; and stature, 177.1±9.9 cm) performed two maximal isometric trapezoid muscle actions of the elbow flexors that included either an explosive or a slower, linearly increasing rate (ramp) of torque development. Surface EMG signals of the biceps brachii (BB) and triceps brachii (TB) muscles were collected and decomposed into their constituent MU action potential trains. The MU firing rate versus action potential amplitude relationships of the BB (agonist) and TB (antagonist) muscles were analysed. Moderate to strong relationships (|r| ≥ 0.65) were present for the explosive and ramp contractions in the agonist and antagonist muscles. Firing rates of smaller and larger MUs were higher during the explosive [mean ± SD; agonist = 18.1 ± 6.9 pulses per second (pps), antagonist = 22.0±3.9 pps] than the ramp (agonist = 14.0 ± 5.1 pps, antagonist = 18.3 ± 4.4 pps) contractions for the agonist (P = 0.013) and antagonist muscles (P = 0.007). The antagonist muscle exhibits a similar MU firing rate versus action potential amplitude relationship to the agonist muscle at maximal efforts. Future research should investigate the effects of short-term resistance training on antagonist firing rates and the involvement of peripheral feedback on firing rates during maximal efforts performed at various rates of torque development.
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Affiliation(s)
- Tanner M Reece
- Neuromechanics Laboratory, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, Kansas, USA
| | - Catherine E Arnold
- Neuromechanics Laboratory, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, Kansas, USA
| | - Trent J Herda
- Neuromechanics Laboratory, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, Kansas, USA
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Blazevich AJ, Collins DF, Millet GY, Vaz MA, Maffiuletti NA. Enhancing Adaptations to Neuromuscular Electrical Stimulation Training Interventions. Exerc Sport Sci Rev 2021; 49:244-252. [PMID: 34107505 PMCID: PMC8460078 DOI: 10.1249/jes.0000000000000264] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Neuromuscular electrical stimulation (NMES) applied to skeletal muscles is an effective rehabilitation and exercise training modality. However, the relatively low muscle force and rapid muscle fatigue induced by NMES limit the stimulus provided to the neuromuscular system and subsequent adaptations. We hypothesize that adaptations to NMES will be enhanced by the use of specific stimulation protocols and adjuvant interventions.
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Affiliation(s)
- Anthony J. Blazevich
- Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - David F. Collins
- Human Neurophysiology Laboratory, Faculty of Kinesiology, Sport, and Recreation, University of Alberta, Edmonton, Alberta, Canada
| | - Guillaume Y. Millet
- Université de Lyon, UJM, Inter-university Laboratory of Human Movement Biology, EA 7424, Saint-Etienne
- Institut Universitaire de France (IUF), Paris, France
| | - Marco A. Vaz
- Laboratório de Pesquisa do Exercício (LAPEX), Escola de Educação Física, Fisioterapia e Dança, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brasil
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Shafer RL, Wang Z, Bartolotti J, Mosconi MW. Visual and somatosensory feedback mechanisms of precision manual motor control in autism spectrum disorder. J Neurodev Disord 2021; 13:32. [PMID: 34496766 PMCID: PMC8427856 DOI: 10.1186/s11689-021-09381-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 08/11/2021] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Individuals with autism spectrum disorder (ASD) show deficits processing sensory feedback to reactively adjust ongoing motor behaviors. Atypical reliance on visual and somatosensory feedback each have been reported during motor behaviors in ASD suggesting that impairments are not specific to one sensory domain but may instead reflect a deficit in multisensory processing, resulting in reliance on unimodal feedback. The present study tested this hypothesis by examining motor behavior across different visual and somatosensory feedback conditions during a visually guided precision grip force test. METHODS Participants with ASD (N = 43) and age-matched typically developing (TD) controls (N = 23), ages 10-20 years, completed a test of precision gripping. They pressed on force transducers with their index finger and thumb while receiving visual feedback on a computer screen in the form of a horizontal bar that moved upwards with increased force. They were instructed to press so that the bar reached the level of a static target bar and then to hold their grip force as steadily as possible. Visual feedback was manipulated by changing the gain of the force bar. Somatosensory feedback was manipulated by applying 80 Hz tendon vibration at the wrist to disrupt the somatosensory percept. Force variability (standard deviation) and irregularity (sample entropy) were examined using multilevel linear models. RESULTS While TD controls showed increased force variability with the tendon vibration on compared to off, individuals with ASD showed similar levels of force variability across tendon vibration conditions. Individuals with ASD showed stronger age-associated reductions in force variability relative to controls across conditions. The ASD group also showed greater age-associated increases in force irregularity relative to controls, especially at higher gain levels and when the tendon vibrator was turned on. CONCLUSIONS Our findings that disrupting somatosensory feedback did not contribute to changes in force variability or regularity among individuals with ASD suggests a reduced ability to integrate somatosensory feedback information to guide ongoing precision manual motor behavior. We also document stronger age-associated gains in force control in ASD relative to TD suggesting delayed development of multisensory feedback control of motor behavior.
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Affiliation(s)
- Robin L Shafer
- Life Span Institute, University of Kansas, Lawrence, KS, USA
- Kansas Center for Autism Research and Training (K-CART), University of Kansas, Lawrence, KS, USA
| | - Zheng Wang
- Department of Occupational Therapy, University of Florida, Gainesville, FL, USA
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - James Bartolotti
- Life Span Institute, University of Kansas, Lawrence, KS, USA
- Kansas Center for Autism Research and Training (K-CART), University of Kansas, Lawrence, KS, USA
| | - Matthew W Mosconi
- Life Span Institute, University of Kansas, Lawrence, KS, USA.
- Kansas Center for Autism Research and Training (K-CART), University of Kansas, Lawrence, KS, USA.
- Clinical Child Psychology Program, University of Kansas, Lawrence, KS, USA.
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Koumantakis GA, Roussou E, Angoules GA, Angoules NA, Alexandropoulos T, Mavrokosta G, Nikolaou P, Karathanassi F, Papadopoulou M. The immediate effect of IASTM vs. Vibration vs. Light Hand Massage on knee angle repositioning accuracy and hamstrings flexibility: A pilot study. J Bodyw Mov Ther 2020; 24:96-104. [PMID: 32826015 DOI: 10.1016/j.jbmt.2020.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 02/03/2020] [Accepted: 02/17/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The effectiveness of novel soft-tissue interventions relative to traditional ones requires further exploration. The purpose of this pilot study was to evaluate the immediate effect of Instrument Assisted Soft Tissue Mobilization (IASTM) compared to Vibration Massage or Light Hand Massage on hamstrings' flexibility and knee proprioception. METHODS 16 healthy non-injured male participants (mean age 23.7 years, height 1.80 cms and body mass 77.7 kg) were randomly assigned to the following interventions: (a) 5min IASTM, (b) 5min Vibration Massage and (c) 8min Light Hand-Massage, sequentially delivered to all participants with an in-between 1-week time interval. A single application of each intervention was given over the hamstrings of their dominant leg (repeated measures under 3 different experimental conditions). An active knee angle reproduction proprioception test and the back-saver sit and reach flexibility test were performed before and immediately after each intervention. Reliability of outcomes was also assessed. RESULTS Reliability for flexibility (ICC3,1 = 0.97-0.99/SEM = 0.83-1.52 cm) and proprioception (ICC3,1 = 0.83-0.88/SEM = 1.63-2.02°) was very good. For flexibility, statistically significant immediate improvement (p < 0.001) was noted in all 3 groups (1.61-3.23 cm), with no between-group differences. For proprioception, improvement in the IASTM (2.12°), Vibration Massage (0.32°) and Light Hand-Massage (1.17°) conditions was not statistically significant; no between-group differences were also evident. CONCLUSIONS Our findings indicate that muscle flexibility was positively influenced immediately after a single intervention of IASTM, Vibration Massage or Light Hand Massage. Proprioception changes were not statistically significant either within or between groups. Further evaluation of those interventions in a larger population with hamstrings pathology is required.
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Affiliation(s)
- George A Koumantakis
- 401 General Army Hospital of Athens, Physiotherapy Department, Pan. Kanellopoulou 1, Athens, Greece; Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK.
| | - Eleonora Roussou
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
| | - Georgios A Angoules
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
| | - Nikolaos A Angoules
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
| | - Theodoros Alexandropoulos
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
| | - Georgia Mavrokosta
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
| | - Prokopios Nikolaou
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
| | - Filippi Karathanassi
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
| | - Maria Papadopoulou
- Metropolitan College, Health Sciences Faculty, School of Physiotherapy, Athens, Greece - Affiliated Institution with Queen Margaret University, Edinburgh, UK
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Germer CM, Del Vecchio A, Negro F, Farina D, Elias LA. Neurophysiological correlates of force control improvement induced by sinusoidal vibrotactile stimulation. J Neural Eng 2020; 17:016043. [PMID: 31791034 DOI: 10.1088/1741-2552/ab5e08] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE An optimal level of vibrotactile stimulation has been shown to improve sensorimotor control in healthy and diseased individuals. However, the underlying neurophysiological mechanisms behind the enhanced motor performance caused by vibrotactile stimulation are yet to be fully understood. Therefore, here we aim to evaluate the effect of a cutaneous vibration on the firing behavior of motor units in a condition of improved force steadiness. APPROACH Participants performed a visuomotor task, which consisted of low-intensity isometric contractions of the first dorsal interosseous (FDI) muscle, while sinusoidal (175 Hz) vibrotactile stimuli with different intensities were applied to the index finger. High-density surface electromyogram was recorded from the FDI muscle, and a decomposition algorithm was used to extract the motor unit spike trains. Additionally, computer simulations were performed using a multiscale neuromuscular model to provide a potential explanation for the experimental findings. MAIN RESULTS Experimental outcomes showed that an optimal level of vibration significantly improved force steadiness (estimated as the coefficient of variation of force). The decreased force variability was accompanied by a reduction in the variability of the smoothed cumulative spike train (as an estimation of the neural drive to the muscle), and the proportion of common inputs to the FDI motor nucleus. However, the interspike interval variability did not change significantly with the vibration. A mathematical approach, together with computer simulation results suggested that vibrotactile stimulation would reduce the variance of the common synaptic input to the motor neuron pool, thereby decreasing the low frequency fluctuations of the neural drive to the muscle and force steadiness. SIGNIFICANCE Our results demonstrate that the decreased variability in common input accounts for the enhancement in force control induced by vibrotactile stimulation.
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Affiliation(s)
- Carina Marconi Germer
- Neural Engineering Research Laboratory, Department of Biomedical Engineering, School of Electrical and Computer Engineering, University of Campinas, Campinas, Brazil
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Souron R, Baudry S, Millet GY, Lapole T. Vibration‐induced depression in spinal loop excitability revisited. J Physiol 2019; 597:5179-5193. [DOI: 10.1113/jp278469] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/14/2019] [Indexed: 01/24/2023] Open
Affiliation(s)
- Robin Souron
- Univ LyonUJM Saint‐EtienneInter‐university Laboratory of Human Movement Biology EA 7424 F‐42023 Saint‐Etienne France
| | - Stéphane Baudry
- Laboratory of Applied BiologyResearch Unit in Applied NeurophysiologyULB Neuroscience InstituteUniversité Libre de Bruxelles Brussels Belgium
| | - Guillaume Y. Millet
- Univ LyonUJM Saint‐EtienneInter‐university Laboratory of Human Movement Biology EA 7424 F‐42023 Saint‐Etienne France
| | - Thomas Lapole
- Univ LyonUJM Saint‐EtienneInter‐university Laboratory of Human Movement Biology EA 7424 F‐42023 Saint‐Etienne France
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