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Sugimoto T, Yoshikura R, Maezawa T, Mekata K, Ueda Y, Kawaguchi H, Izumi S. Effects of the walking independence on lower extremity and trunk muscle activity during straight-leg raising following incomplete cervical cord injury. Sci Rep 2024; 14:4363. [PMID: 38388829 PMCID: PMC10883988 DOI: 10.1038/s41598-024-55039-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 02/20/2024] [Indexed: 02/24/2024] Open
Abstract
The purpose of this study was to compare the acceleration and surface electromyography (EMG) of the lower extremity and trunk muscles during straight-leg raising (SLR) in patients with incomplete cervical cord injury according to their levels of walking independence. Twenty-four patients were measured acceleration and EMG during SLR held for 10 s. Data were analyzed separately for the dominant and nondominant sides and compared between the nonindependent (NI) and independent (ID) groups based on their levels of walking independence. Frequency analysis of the EMG showed that the high-frequency (HF) band of the contralateral biceps femoris (BF) in the ID group and bands below the medium-frequency (MF) of the BF and the HF and MF bands of the rectus abdominis in the NI group were significantly higher during dominant and nondominant SLR. During the nondominant SLR, the low-frequency band of the internal oblique and the MF band of the external oblique were significantly higher in the NI group. The ID group mobilized muscle fiber type 2 of the BF, whereas the NI group mobilized type 1 of the BF and types 2 and 1 of the trunk muscles to stabilize the pelvis. This result was more pronounced during the nondominant SLR.
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Affiliation(s)
- Tatsuya Sugimoto
- Department of Rehabilitation, Japanese Red Cross Kobe Hospital, Kobe, Japan.
- Graduate School of System Informatics, Kobe University, Kobe, Japan.
| | - Ryoto Yoshikura
- Graduate School of Science Technology and Innovation, Kobe University, Kobe, Japan
| | - Toshiyuki Maezawa
- Department of Rehabilitation, Japanese Red Cross Kobe Hospital, Kobe, Japan
| | - Kojiro Mekata
- Shijonawate Gakuen University Faculty of Rehabilitation, Osaka, Japan
| | - Yuya Ueda
- Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - Hiroshi Kawaguchi
- Graduate School of Science Technology and Innovation, Kobe University, Kobe, Japan
| | - Shintaro Izumi
- Graduate School of Science Technology and Innovation, Kobe University, Kobe, Japan
- Osaka Heat Cool Inc., Osaka, Japan
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Cruz-Montecinos C, García-Massó X, Maas H, Cerda M, Ruiz-Del-Solar J, Tapia C. Detection of intermuscular coordination based on the causality of empirical mode decomposition. Med Biol Eng Comput 2023; 61:497-509. [PMID: 36527531 DOI: 10.1007/s11517-022-02736-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
Considering the stochastic nature of electromyographic (EMG) signals, nonlinear methods may be a more accurate approach to study intermuscular coordination than the linear approach. The aims of this study were to assess the coordination between two ankle plantar flexors using EMG by applying the causal decomposition approach and assessing whether the intermuscular coordination is affected by the slope of the treadmill. The medial gastrocnemius (MG) and soleus muscles (SOL) were analyzed during the treadmill walking at inclinations of 0°, 5°, and 10°. The coordination was evaluated using ensemble empirical mode decomposition, and the causal interaction was encoded by the instantaneous phase dependence of time series bi-directional causality. To estimate the mutual predictability between MG and SOL, the cross-approximate entropy (XApEn) was assessed. The maximal causal interaction was observed between 40 and 75 Hz independent of inclination. XApEn showed a significant decrease between 0° and 5° (p = 0.028), between 5° and 10° (p = 0.038), and between 0° and 10° (p = 0.014), indicating an increase in coordination. Thus, causal decomposition is an appropriate methodology to study intermuscular coordination. These results indicate that the variation of loading through the change in treadmill inclination increases the interaction of the shared input between MG and SOL, suggesting increased intermuscular coordination.
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Affiliation(s)
- Carlos Cruz-Montecinos
- Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.,Laboratory of Clinical Biomechanics, Department of Kinesiology, Faculty of Medicine, University of Chile, Av. Independencia 1027, Independencia, Santiago, Chile
| | - Xavier García-Massó
- Department of Teaching of Musical, Visual and Corporal Expression, University of Valencia, Valencia, Spain.,Human Movement Analysis Group, University of Valencia, Valencia, Spain
| | - Huub Maas
- Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - Mauricio Cerda
- Integrative Biology Program, Institute of Biomedical Sciences (ICBM), Center for Medical Informatics and Telemedicine (CIMT), Facultad de Medicina, Universidad de Chile, Santiago, Chile.,Biomedical Neuroscience Institute (BNI), Santiago, Chile
| | | | - Claudio Tapia
- Laboratory of Clinical Biomechanics, Department of Kinesiology, Faculty of Medicine, University of Chile, Av. Independencia 1027, Independencia, Santiago, Chile. .,Departamento de Kinesiología, Facultad de Artes Y Educación Física, Universidad Metropolitana de Ciencias de La Educación, Santiago, Chile.
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Krauskopf T, Lauck T, Meyer B, Klein L, Mueller M, Kubosch J, Herget G, von Tscharner V, Ernst J, Stieglitz T, Pasluosta C. Neuromuscular adaptations after osseointegration of a bone-anchored prosthesis in a unilateral transfemoral amputee - a case study. Ann Med 2023; 55:2255206. [PMID: 37677026 PMCID: PMC10486294 DOI: 10.1080/07853890.2023.2255206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/09/2023] Open
Abstract
PURPOSE Many individuals with a lower limb amputation experience problems with the fitting of the socket of their prosthesis, leading to dissatisfaction or device rejection. Osseointegration (OI)- the implantation of a shaft directly interfacing with the remaining bone- is an alternative for these patients. In this observational study, we investigated how bone anchoring influences neuromuscular parameters during balance control in a patient with a unilateral transfemoral amputation. MATERIAL AND METHODS Center of pressure (CoP) and electromyography (EMG) signals from muscles controlling the hip and the ankle of the intact leg were recorded during quiet standing six months before and one and a half years after this patient underwent an OI surgery. Results were compared to a control group of nine able-bodied individuals. RESULTS Muscle co-activation and EMG intensity decreased after bone anchoring, approaching the levels of able-bodied individuals. Muscle co-activation controlling the ankle decreased in the high-frequency range, and the EMG intensity spectrum decreased in the lower-frequency range for all muscles when vision was allowed. With eyes closed, the ankle extensor muscle showed an increased EMG intensity in the high-frequency range post-surgery. CoP length increased in the mediolateral direction of the amputated leg. CONCLUSIONS These findings point to shifts in the patient's neuromuscular profile towards the one of able-bodied individuals.
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Affiliation(s)
- Thomas Krauskopf
- Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Freiburg, Germany
| | - Torben Lauck
- Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany
| | - Britta Meyer
- Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany
| | - Lukas Klein
- Department of Orthopaedics and Trauma Surgery, Medical Center, University of Freiburg, Freiburg, Germany
| | | | - Johanna Kubosch
- Department of Orthopaedics and Trauma Surgery, Medical Center, University of Freiburg, Freiburg, Germany
| | - Georg Herget
- Department of Orthopaedics and Trauma Surgery, Medical Center, University of Freiburg, Freiburg, Germany
| | | | - Jennifer Ernst
- Department of Trauma Surgery, Hannover Medical School, Hannover, Germany
- Department of Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Goettingen, Göttingen, Germany
| | - Thomas Stieglitz
- Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Freiburg, Germany
- Bernstein Center Freiburg, University of Freiburg, Freiburg, Germany
| | - Cristian Pasluosta
- Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Freiburg, Germany
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Maudrich T, Tapper P, Clauß M, Falz R, Lässing J, Kenville R. Motor control strategies differ between monoarticular and biarticular quadriceps muscles during bipedal squats. Scand J Med Sci Sports 2022; 32:1569-1580. [PMID: 36086908 DOI: 10.1111/sms.14230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/19/2022] [Accepted: 09/05/2022] [Indexed: 11/28/2022]
Abstract
The interplay between biarticular and monoarticular muscles of the knee and hip joints during bipedal squats (SQBP ) requires adequate central-nervous control mechanisms to enable smooth and dynamic movements. Here, we investigated motor control between M. vastus medialis (VM), M. vastus lateralis (VL), and M. rectus femoris (RF) in 12 healthy male recreational athletes during SQBP with three load levels (50%, 62.5% & 75% of 3-repetition maximum) following a standardized strength training protocol (3 sets of 10 repetitions). To quantify differences in motor control mechanisms in both time and frequency domains, we analyzed (1) muscle covariation via correlation analyses, as well as (2) common neural input via intermuscular coherence (IMC) between RF, VM, and VL. Our results revealed significantly higher gamma IMC between VM-VL compared to RF-VL and RF-VM for both legs. Correlation analyses demonstrated significantly higher correlation coefficients during ascent periods compared to descent periods across all analyzed muscle pairs. However, no load-dependent modulation of motor control could be observed. Our study provides novel evidence that motor control during SQBP is characterized by differences in common input between biarticular and monoarticular muscles. Additionally, muscle activation patterns show higher similarity during ascent compared to descent periods. Future research should aim to validate and extend our observations as insights into the underlying control mechanisms offer the possibility for practical implications to optimize training concepts in elite sports and rehabilitation.
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Affiliation(s)
- Tom Maudrich
- Department of Movement Neuroscience, Faculty of Sports Science, Leipzig University, Leipzig, Germany.,Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Pascal Tapper
- Department of Movement Neuroscience, Faculty of Sports Science, Leipzig University, Leipzig, Germany
| | - Martina Clauß
- Department of Movement Neuroscience, Faculty of Sports Science, Leipzig University, Leipzig, Germany
| | - Roberto Falz
- Department of Sport Medicine and Prevention, Faculty of Sports Science, Leipzig University, Leipzig, Germany
| | - Johannes Lässing
- Department of Sport Medicine and Prevention, Faculty of Sports Science, Leipzig University, Leipzig, Germany
| | - Rouven Kenville
- Department of Movement Neuroscience, Faculty of Sports Science, Leipzig University, Leipzig, Germany.,Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
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Krauskopf T, Lauck TB, Klein L, Beusterien ML, Mueller M, Von Tscharner V, Mehring C, Herget GW, Stieglitz T, Pasluosta C. Unilateral transfemoral amputees exhibit altered strength and dynamics of muscular co-activation modulated by visual feedback. J Neural Eng 2022; 19. [PMID: 35100571 DOI: 10.1088/1741-2552/ac5091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 01/31/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Somatosensory perception is disrupted in patients with a lower limb amputation. This increases the difficulty to maintain balance and leads to the development of neuromuscular adjustments. We investigated how these adjustments are reflected in the co-activation of lower body muscles and are modulated by visual feedback. APPROACH We measured electromyography (EMG) signals of muscles from the trunk (erector spinae and obliquus external), and the lower intact/dominant leg (tibialis anterior and medial gastrocnemius) in eleven unilateral transfemoral amputees and eleven age-matched able-bodied controls during 30 seconds of upright standing with and without visual feedback. Muscle synergies involved in balance control were investigated using wavelet coherence analysis. We focused on 7 frequencies grouped in three frequency bands, a low-frequency band (7.56 and 19.86 Hz) representing more sub-cortical and spinal inputs to the muscles, a mid-frequency band (38.26 and 62.63 Hz) representing more cortical inputs, and a high-frequency band (92.90, 129 and 170.90 Hz) associated with synchronizing motor unit action potentials. Further, the dynamics of changes in intermuscular coupling over time were quantified using the Entropic Half-Life. MAIN RESULTS Amputees exhibited lower coherency values when vision was removed at 7.56 Hz for the muscle pair of the lower leg. At this frequency, the coherency values of the amputee group also differed from controls for the eyes closed condition. Controls and amputees exhibited opposite coherent behaviors with visual feedback at 7.56 Hz. For the eyes open condition at 129 Hz, the coherency values of amputees and controls differed for the muscle pair of the trunk, and at 170.90 Hz for the muscle pair of the lower leg. Amputees exhibited different dynamics of muscle co-activation at the low frequency band when vision was available. SIGNIFICANCE Altogether, these findings point to the development of neuromuscular adaptations reflected in the strength and dynamics of muscular co-activation.
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Affiliation(s)
- Thomas Krauskopf
- Laboratory for Biomedical Micro-technology, Department of Microsystem Engineering (IMTEK), University of Freiburg, Georges-Koehler-Allee 201, Freiburg im Breisgau, Baden-Württemberg, 79110, GERMANY
| | - Torben B Lauck
- Laboratory for Biomedical Microtechnology, Department of Microsystem Engineering (IMTEK) , University of Freiburg, Georges-Koehler-Allee 201, Freiburg im Breisgau, Baden-Württemberg, 79110, GERMANY
| | - Lukas Klein
- Department of Orthopaedics and Trauma Surgery, Medical Center-University of Freiburg, Hugstetter Straße 55, Freiburg, Baden-Württemberg, 79106, GERMANY
| | - Marvin L Beusterien
- Laboratory for Biomedical Micro-technology, Department of Microsystem Engineering (IMTEK), University of Freiburg, Georges-Koehler-Allee 201, Freiburg im Breisgau, Baden-Württemberg, 79110, GERMANY
| | - Marc Mueller
- Sanitaetshaus Pfaender, Munzinger Straße 5c, Freiburg, 79111, GERMANY
| | | | - Carsten Mehring
- Institute of Biology III & Bernstein Centre , University of Freiburg, Hansastr. 9a, Freiburg im Breisgau, Baden-Württemberg, 79098, GERMANY
| | - Georg W Herget
- Department of Orthopaedics and Trauma Surgery, Medical Center-University of Freiburg, Hugstetter Straße 55, Freiburg, Baden-Württemberg, 79106, GERMANY
| | - Thomas Stieglitz
- Laboratory for Biomedical Micro-technology, Department of Microsystem Engineering (IMTEK), University of Freiburg, Georges-Köhler-Allee 201, Freiburg im Breisgau, Baden-Württemberg, 79110, GERMANY
| | - Cristian Pasluosta
- Laboratory for Biomedical Micro-technology, Department of Microsystem Engineering (IMTEK), University of Freiburg, Georges-Koehler-Allee 201, Freiburg im Breisgau, Baden-Württemberg, 79110, GERMANY
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Liu W, Fleming A, Lee IC, Huang HH. Direct Myoelectric Control Modifies Lower Limb Functional Connectivity: A Case Study. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2021; 2021:6573-6576. [PMID: 34892615 DOI: 10.1109/embc46164.2021.9630844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Prostheses with direct EMG control could restore amputee's biomechanics structure and residual muscle functions by using efferent signals to drive prosthetic ankle joint movements. Because only feedforward control is restored, it is unclear 1) what neuromuscular control mechanisms are used in coordinating residual and intact muscle activities and 2) how this mechanism changes over guided training with the prosthetic ankle. To address these questions, we applied functional connectivity analysis to an individual with unilateral lower-limb amputation during postural sway task. We built functional connectivity networks of surface EMGs from eleven lower-limb muscles during three sessions to investigate the coupling among different function modules. We observed that functional network was reshaped by training and we identified a stronger connection between residual and intact below knee modules with improved bilateral symmetry after amputee acquired skills to better control the powered prosthetic ankle. The evaluation session showed that functional connectivity was largely preserved even after nine months interval. This preliminary study might inform a unique way to unveil the potential neuromechanic changes that occur after extended training with direct EMG control of a powered prosthetic ankle.
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Fidalgo-Herrera A, Miangolarra-Page JC, Carratalá-Tejada M. Electromyographic traces of motor unit synchronization of fatigued lower limb muscles during gait. Hum Mov Sci 2020; 75:102750. [PMID: 33373857 DOI: 10.1016/j.humov.2020.102750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 12/14/2020] [Accepted: 12/17/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND The study of the signal in the frequency domain has shown to be a good tool to identify muscular fatigue. Previous research has shown that the low frequency band and 40 Hz frequency band increase their relative intensity with the onset of fatigue. These findings were obtained in rectus femoris, but the behaviours of other muscles of the lower limb are unknown. In this article we explored the changes in the low frequency and 40 Hz frequency band of lower limb muscles with respect to fatigue. METHODS Thirty healthy subjects were recruited to analyse the electromyography (EMG) of biceps femoris, tibialis anterior and gastrocnemius medialis and lateralis of both legs during gait. Four two-minutes walks at a self-selected speed were recorded, the first two walks with a normal muscular function and the last two walks after a fatigue protocol. All the signals were decomposed using wavelet transformations. The signals were normalized in time and spectral intensities normalized to the sum of intensities in the frequency domain. Two frequency bands were studied in each walk: the 40-Hz (34-53 Hz) and the low frequency (< 25 Hz) bands. A ratio of the spectral intensities of those frequency bands at each walk was obtained by dividing the 40-Hz frequency band spectral intensity by the low frequency band spectral intensity. Statistical parametric mapping techniques were used to compare the ratios of the prefatigue walks against the postfatigue walks. RESULTS The results of the Statistical Non-Parametric Mapping (SnPM) analysis of all muscles depict a higher relative spectral intensity in the low frequency band in the comparison of fatigue versus prefatigue recordings except for the right gastrocnemius lateralis. The critical thresholds F* were exceeded by multiple suprathreshold clusters with p values <0.05, showing that the low frequency band increased its relative spectral intensity in the case of fatigue. CONCLUSION The obtained results suggest that the low frequency band increases its relative spectral intensity in all the studied muscles when fatigue onsets. This increase in relative spectral intensity may be linked to an increase in motor unit synchronization promoted by the central nervous system to ensure good motor control.
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Affiliation(s)
- A Fidalgo-Herrera
- LAMBECOM, Universidad Rey Juan Carlos, Alcorcón, calle Atenas S/N, Madrid, Spain.
| | - J C Miangolarra-Page
- LAMBECOM, Universidad Rey Juan Carlos, Alcorcón, calle Atenas S/N, Madrid, Spain; Fuenlabrada's Clinical University Hospital, Fuenalbrada, Camino del Molino, 2, Madrid, Spain.
| | - M Carratalá-Tejada
- LAMBECOM, Universidad Rey Juan Carlos, Alcorcón, calle Atenas S/N, Madrid, Spain.
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VAN Criekinge T, Saeys W, Hallemans A, Herssens N, Lafosse C, VAN Laere K, Dereymaeker L, VAN Tichelt E, DE Hertogh W, Truijen S. SWEAT2 study: effectiveness of trunk training on muscle activity after stroke. A randomized controlled trial. Eur J Phys Rehabil Med 2020; 57:485-494. [PMID: 33165310 DOI: 10.23736/s1973-9087.20.06409-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Trunk training after stroke is an effective method for improving trunk control, standing balance and mobility. The SWEAT2 study attempts to discover the underlying mechanisms leading to the observed mobility carry-over effects after trunk training. AIM A secondary analysis investigating the effect of trunk training on muscle activation patterns, muscle synergies and motor unit recruitment of trunk and lower limbs muscles, aimed to provide new insights in gait recovery after stroke. DESIGN Randomized controlled trial. SETTING Monocentric study performed in the RevArte Rehabilitation Hospital (Antwerp, Belgium). POPULATION Forty-five adults diagnosed with first stroke within five months, of which 39 completed treatment and were included in the analysis. METHODS Participants received 16 hours of additional trunk training (N.=19) or cognitive training (N.=20) over the course of four weeks (1 hour, 4 times a week). They were assessed by an instrumented gait analysis with electromyography of trunk and lower limb muscles. Outcome measures were linear integrated normalized envelopes of the electromyography signal, the amount and composition of muscle synergies calculated by nonnegative matrix factorization and motor unit recruitment calculated, by mean center wavelet frequencies. Multivariate analysis with post-hoc analysis and statistical parametric mapping of the continuous curves were performed. RESULTS No significant differences were found in muscle activation patterns and the amount of muscle synergies. In 42% of the subjects, trunk training resulted in an additional muscle synergy activating trunk muscles in isolation, as compared to 5% in the control group. Motor unit recruitment of the of trunk musculature showed decreased fast-twitch motor recruitment in the erector spinae muscle after trunk training: for the hemiplegic (t[37]=2.44, P=0.021) and non-hemiplegic erector spinae muscle (t[37]=2.36, P=0.024). CONCLUSIONS Trunk training improves selective control and endurance of trunk musculature after sub-acute stroke. CLINICAL REHABILITATION IMPACT What is new to the actual clinical rehabilitation knowledge is that: trunk training does not alter muscle activation patterns or the amount of muscle synergies over time; a decrease in fast-twitch motor recruitment in the erector spinae muscle was found during walking after trunk training; trunk training seems to increase the fatigue-resistance of the back muscles and enables more isolated activation.
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Affiliation(s)
- Tamaya VAN Criekinge
- Department of Rehabilitation Sciences and Physiotherapy (REVAKI/MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium - .,Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium -
| | - Wim Saeys
- Department of Rehabilitation Sciences and Physiotherapy (REVAKI/MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium.,RevArte Rehabilitation Hospital, Edegem, Belgium
| | - Ann Hallemans
- Department of Rehabilitation Sciences and Physiotherapy (REVAKI/MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium
| | - Nolan Herssens
- Department of Rehabilitation Sciences and Physiotherapy (REVAKI/MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium
| | - Christophe Lafosse
- RevArte Rehabilitation Hospital, Edegem, Belgium.,KU Leuven Department of Psychology, University of Leuven, Leuven, Belgium
| | - Katia VAN Laere
- Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium
| | - Lutgart Dereymaeker
- Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium
| | - Els VAN Tichelt
- Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium
| | - Willem DE Hertogh
- Department of Rehabilitation Sciences and Physiotherapy (REVAKI/MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium
| | - Steven Truijen
- Department of Rehabilitation Sciences and Physiotherapy (REVAKI/MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Multidisciplinary Motor Centre Antwerp (M2 OCEAN), University of Antwerp, Antwerp, Belgium
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Kenville R, Maudrich T, Vidaurre C, Maudrich D, Villringer A, Ragert P, Nikulin VV. Intermuscular coherence between homologous muscles during dynamic and static movement periods of bipedal squatting. J Neurophysiol 2020; 124:1045-1055. [PMID: 32816612 PMCID: PMC7742219 DOI: 10.1152/jn.00231.2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Coordination of functionally coupled muscles is a key aspect of movement execution. Demands on coordinative control increase with the number of involved muscles and joints, as well as with differing movement periods within a given motor sequence. While previous research has provided evidence concerning inter- and intramuscular synchrony in isolated movements, compound movements remain largely unexplored. With this study, we aimed to uncover neural mechanisms of bilateral coordination through intermuscular coherence (IMC) analyses between principal homologous muscles during bipedal squatting (BpS) at multiple frequency bands (alpha, beta, and gamma). For this purpose, participants performed bipedal squats without additional load, which were divided into three distinct movement periods (eccentric, isometric, and concentric). Surface electromyography (EMG) was recorded from four homologous muscle pairs representing prime movers during bipedal squatting. We provide novel evidence that IMC magnitudes differ between movement periods in beta and gamma bands, as well as between homologous muscle pairs across all frequency bands. IMC was greater in the muscle pairs involved in postural and bipedal stability compared with those involved in muscular force during BpS. Furthermore, beta and gamma IMC magnitudes were highest during eccentric movement periods, whereas we did not find movement-related modulations for alpha IMC magnitudes. This finding thus indicates increased integration of afferent information during eccentric movement periods. Collectively, our results shed light on intermuscular synchronization during bipedal squatting, as we provide evidence that central nervous processing of bilateral intermuscular functioning is achieved through task-dependent modulations of common neural input to homologous muscles. NEW & NOTEWORTHY It is largely unexplored how the central nervous system achieves coordination of homologous muscles of the upper and lower body within a compound whole body movement, and to what extent this neural drive is modulated between different movement periods and muscles. Using intermuscular coherence analysis, we show that homologous muscle functions are mediated through common oscillatory input that extends over alpha, beta, and gamma frequencies with different synchronization patterns at different movement periods.
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Affiliation(s)
- Rouven Kenville
- Institute for General Kinesiology and Exercise Science, Faculty of Sports Science, University of Leipzig, Leipzig, Germany.,Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Leipzig, Germany
| | - Tom Maudrich
- Institute for General Kinesiology and Exercise Science, Faculty of Sports Science, University of Leipzig, Leipzig, Germany.,Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Leipzig, Germany
| | - Carmen Vidaurre
- Department of Statistics, Informatics and Mathematics, Public University of Navarre, Pamplona, Spain.,Machine Learning Group, Faculty of EE and Computer Science, TU Berlin, Berlin, Germany
| | - Dennis Maudrich
- Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Leipzig, Germany
| | - Arno Villringer
- Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Leipzig, Germany.,MindBrainBody Institute at Berlin School of Mind and Brain, Charité-Universitätsmedizin Berlin and Humboldt-Universität zu Berlin, Germany.,Clinic for Cognitive Neurology, University Hospital Leipzig, Leipzig, Germany
| | - Patrick Ragert
- Institute for General Kinesiology and Exercise Science, Faculty of Sports Science, University of Leipzig, Leipzig, Germany.,Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Leipzig, Germany
| | - Vadim V Nikulin
- Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neurology, Leipzig, Germany.,Centre for Cognition and Decision Making, Institute for Cognitive Neuroscience, National Research University Higher School of Economics, Moscow, Russian Federation.,Neurophysics Group, Department of Neurology, Charité-University Medicine Berlin, Campus Benjamin Franklin, Berlin, Germany
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Fidalgo-Herrera A, Miangolarra-Page J, Carratalá-Tejada M. Traces of muscular fatigue in the rectus femoris identified with surface electromyography and wavelets on normal gait. Physiother Theory Pract 2020; 38:211-225. [DOI: 10.1080/09593985.2020.1725945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Alberto Fidalgo-Herrera
- Laboratorio de Análisis del Movimiento, Biomecánica, Ergonomía y Control Motor (LAMBECOM), Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Juan Miangolarra-Page
- Laboratorio de Análisis del Movimiento, Biomecánica, Ergonomía y Control Motor (LAMBECOM), Universidad Rey Juan Carlos, Alcorcón, Spain
- Departamento de Medicina Física y Rehabilitación, Hospital Universitario de Fuenlabrada, Fuenlabrada, Spain
| | - Maria Carratalá-Tejada
- Laboratorio de Análisis del Movimiento, Biomecánica, Ergonomía y Control Motor (LAMBECOM), Universidad Rey Juan Carlos, Alcorcón, Spain
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11
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Mohr M, von Tscharner V, Emery CA, Nigg BM. Classification of gait muscle activation patterns according to knee injury history using a support vector machine approach. Hum Mov Sci 2019; 66:335-346. [PMID: 31146192 DOI: 10.1016/j.humov.2019.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 11/26/2022]
Abstract
Abnormal muscle activation patterns during gait following knee injury that persist past the acute injury and rehabilitation phase (>three years) are not well characterized but may be related to post-traumatic knee osteoarthritis. The aim was to characterize the abnormal muscle activity from electromyograms of five leg muscles that were recorded during treadmill walking for young adults with and without a previous knee injury 3-12 years prior. The wavelet transformed and amplitude normalized electromyograms yielded intensity patterns that reflect the muscle activity of these muscles resolved in time and frequency. Patterns belonging to the affected or unaffected leg in previously injured participants and patterns belonging to a previously injured vs. uninjured participant were grouped and then classified using a principal component analysis followed by a support vector machine. A leave-one-out cross-validation was used to test the model significance and generalization. The results showed that trained classifiers could successfully recognize whether muscle activation patterns belonged to the affected or unaffected leg of previously injured individuals. Classification rates of 83% were obtained for all subjects, 100% for females only, indicating sex-specific knee injury effects. In contrast, it was not possible to discriminate between patterns belonging to the previously injured legs or dominant legs of control subjects. For females, the injured leg showed a stronger muscle activity for hamstring muscles and a lower activity for the vastus lateralis. In conclusion, systematic knee injury effects on the neuromuscular control of the knee during gait were present 3-12 years later.
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Affiliation(s)
- Maurice Mohr
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Alberta, Canada.
| | - Vinzenz von Tscharner
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada
| | - Carolyn A Emery
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Alberta, Canada; The Alberta Children's Hospital Research Institute and McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Benno M Nigg
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada
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Mohr M, von Tscharner V, Whittaker JL, Emery CA, Nigg BM. Quadriceps-hamstrings intermuscular coherence during single-leg squatting 3-12 years following a youth sport-related knee injury. Hum Mov Sci 2019; 66:273-284. [PMID: 31078946 DOI: 10.1016/j.humov.2019.04.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 03/18/2019] [Accepted: 04/26/2019] [Indexed: 11/27/2022]
Abstract
The purpose of this study was to determine the degree of co-contraction as per electromyographic gamma-band intermuscular coherence of the quadricep (Q) and hamstring (H) muscles during single-leg squatting (SLS), and to assess the influence of sex and self-reported knee complaints on the association between knee injury history and medial and lateral Q-H intermuscular coherence. Participants included 34 individuals who suffered a youth sport-related intra-articular knee injury 3-12 years previously, and 37 individuals with no knee injury history. Surface electromyographic signals were recorded from medial and lateral thigh muscles bilaterally to determine the gamma-band (30-60 Hz) intermuscular coherence between medial and lateral Q-H muscle pairs during SLS. Multivariable linear regression (α = 0.05) was performed to investigate the relationship between knee injury history (main exposure) and medial and lateral Q-H coherence (outcome) while accounting for the influence of sex and self-reported knee pain and symptoms (covariates). The median age of participants was 25 (range 18-30) and 67% were female. Q-H gamma-band coherence was present for 60-90% of legs. Medial and lateral Q-H coherence was higher in females compared to males. There was no evidence for an association between medial Q-H coherence, knee injury history, knee pain, or symptoms. There was evidence for an association between knee injury history and lateral Q-H coherence, which was modified by sex such that previously injured males demonstrated reduced Q-H coherence compared to uninjured males. These finding suggest that females demonstrate a more pronounced Q-H co-contraction strategy during a SLS than males regardless of knee injury history. Further, that male who suffered a youth sport-related knee injury 3-12 years previously demonstrate less Q-H co-contraction during a SLS than uninjured males. The mechanisms behind differences in neuromuscular control between males and females as well as previously injured and uninjured males require further investigation.
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Affiliation(s)
- Maurice Mohr
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Alberta, Canada.
| | - Vinzenz von Tscharner
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada
| | - Jackie L Whittaker
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Alberta, Canada; The Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada
| | - Carolyn A Emery
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada; Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Alberta, Canada; The Alberta Children's Hospital Research Institute and McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Benno M Nigg
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada
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13
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Brueckner D, Göpfert B, Kiss R, Muehlbauer T. Effects of motor practice on learning a dynamic balance task in healthy young adults: A wavelet-based time-frequency analysis. Gait Posture 2019; 70:264-269. [PMID: 30909006 DOI: 10.1016/j.gaitpost.2019.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/06/2019] [Accepted: 03/20/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND Previous research showed changes in amplitude- or time-derived measures of electromyographic (EMG) activity with motor learning. However, an analysis of the EMG spectral content (e.g., via wavelet technique) has not been included in these investigations yet. OBJECTIVE The aim of this study was to use conventional, amplitude-derived EMG parameters along with modern, wavelet-based time-frequency EMG measures to assess the effects of motor practice on learning a dynamic balance task. METHODS Nineteen young male adults (mean age: 26 ± 6 years) practiced a dynamic balance task for two days. Delayed retention test was performed on the third day. On a behavioral level, the root-mean-square error (RMSE) of the stability platform angle was calculated and used as outcome measure. On a neuromuscular level, EMG data from the tibialis anterior (TA) and the gastrocnemius medialis (GM) muscle were unilaterally recorded and analysed by calculating the integrated EMG (iEMG) and the EMG intensity (via continuous wavelet transforms). RESULTS Two days of practice resulted in significantly improved balance performance (i.e., lower RMSE) and TA/GM activation (i.e., reduced iEMG and EMG intensity) that was still present during the retention test on day 3. There was also evidence of practice-related changes in the EMG intensity pattern as indicated by an intensity shift from higher to lower frequency components. CONCLUSIONS We conclude that motor practice leads to improvements in movement effectiveness as indicated by reduced RMSE and in movement efficiency (i.e., decreased iEMG and EMG intensity, intensity shift). In addition to conventional amplitude-derived EMG parameters, modern, wavelet-based time-frequency EMG measures are appropriate to detect practice-related changes in muscle activation.
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Affiliation(s)
- Dennis Brueckner
- Division of Movement and Training Sciences/Biomechanics of Sport, University of Duisburg-Essen, Essen, Germany
| | - Beat Göpfert
- Center of Biomechanics and Biocalorimetry, Department of Biomedical Engineering, University of Basel, Basel, Switzerland
| | - Rainer Kiss
- Department of Health and Social Affairs, FHM Bielefeld - University of Applied Sciences, Bielefeld, Germany
| | - Thomas Muehlbauer
- Division of Movement and Training Sciences/Biomechanics of Sport, University of Duisburg-Essen, Essen, Germany.
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Filli L, Meyer C, Killeen T, Lörincz L, Göpfert B, Linnebank M, von Tscharner V, Curt A, Bolliger M, Zörner B. Probing Corticospinal Control During Different Locomotor Tasks Using Detailed Time-Frequency Analysis of Electromyograms. Front Neurol 2019; 10:17. [PMID: 30761064 PMCID: PMC6361808 DOI: 10.3389/fneur.2019.00017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 01/07/2019] [Indexed: 12/11/2022] Open
Abstract
Locomotion relies on the fine-tuned coordination of different muscles which are controlled by particular neural circuits. Depending on the attendant conditions, walking patterns must be modified to optimally meet the demands of the task. Assessing neuromuscular control during dynamic conditions is methodologically highly challenging and prone to artifacts. Here we aim at assessing corticospinal involvement during different locomotor tasks using non-invasive surface electromyography. Activity in tibialis anterior (TA) and gastrocnemius medialis (GM) muscles was monitored by electromyograms (EMGs) in 27 healthy volunteers (11 female) during regular walking, walking while engaged in simultaneous cognitive dual tasks, walking with partial visual restriction, and skilled, targeted locomotion. Whereas EMG intensity of the TA and GM was considerably altered while walking with partial visual restriction and during targeted locomotion, dual-task walking induced only minor changes in total EMG intensity compared to regular walking. Targeted walking resulted in enhanced EMG intensity of GM in the frequency range associated with Piper rhythm synchronies. Likewise, targeted walking induced enhanced EMG intensity of TA at the Piper rhythm frequency around heelstrike, but not during the swing phase. Our findings indicate task- and phase-dependent modulations of neuromuscular control in distal leg muscles during various locomotor conditions in healthy subjects. Enhanced EMG intensity in the Piper rhythm frequency during targeted walking points toward enforced corticospinal drive during challenging locomotor tasks. These findings indicate that comprehensive time-frequency EMG analysis is able to gauge cortical involvement during different movement programs in a non-invasive manner and might be used as complementary diagnostic tool to assess baseline integrity of the corticospinal tract and to monitor changes in corticospinal drive as induced by neurorehabilitation interventions or during disease progression.
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Affiliation(s)
- Linard Filli
- Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland.,Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Christian Meyer
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Tim Killeen
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Lilla Lörincz
- Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Beat Göpfert
- Department of Biomedical Engineering, Center for Biomechanics and Biocalorimetry, University of Basel, Basel, Switzerland
| | - Michael Linnebank
- Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland.,Department of Neurology, Helios-Klinik Hagen-Ambrock, Hagen, Germany
| | | | - Armin Curt
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Marc Bolliger
- Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
| | - Björn Zörner
- Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland.,Spinal Cord Injury Center, Balgrist University Hospital, Zurich, Switzerland
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