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Zhang F, Sun M, Qu F, Lewis K, Choi JH, Song Q, Li L. The effect of loss of foot sole sensitivity on H-reflex of triceps surae muscles and functional gait. Front Physiol 2023; 13:1036122. [PMID: 36685170 PMCID: PMC9849679 DOI: 10.3389/fphys.2022.1036122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 12/19/2022] [Indexed: 01/06/2023] Open
Abstract
Objective: To investigate the effects of foot sole insensitivity on the outcomes of the triceps surae muscle H-reflex and functional gait. Material and Methods: People with peripheral neuropathy were recruited and divided into two groups: people with more (n = 13, 73.3 ± 4.3 years old) or less (n = 10, 73.5 ± 5.3) sensitive tactile sensation. Their monofilament testing scores were 9.0 ± 1.5 (range: 7-10) and 2.3 ± 2.4 (range: 0-6) out of 10, respectively. H-reflex of the triceps surae muscles during quiet standing and their relationship with functional gait, 6 min walking distance (6MWD), and timed-up-and-go duration (TUG), were compared between groups. Results: No significant difference was detected for H-reflex parameters between the groups. The less sensitive group showed reduced (p < .05) functional gait capacity compared to the other group, 38.4 ± 52.7 vs. 463.5 ± 47.6 m for 6MWD, and 9.0 ± 1.5 vs. 7.2 ± 1.1s for TUG, respectively. A significant correlation (p < .05), worse functional gait related to greater H/M ratio, was observed in the less sensitive group, not the other group. Conclusion: Although there was no significant H-reflex difference between the groups, more pronounced tactile sensation degeneration affected functional gaits and their relationship with H-reflex.
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Affiliation(s)
- Fangtong Zhang
- Biomechanics Laboratory, Beijing Sport University, Beijing, China
| | - Mengzi Sun
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, United States,School of Sports Science and Physical Education, Nanjing Normal University, Nanjing, China
| | - Feng Qu
- Biomechanics Laboratory, Beijing Sport University, Beijing, China
| | - Kelsey Lewis
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, United States
| | - Jung Hun Choi
- Department of Mechanical Engineering, Georgia Southern University, Statesboro, GA, United States
| | - Qipeng Song
- College of Sports and Health, Shandong Sport University, Jinan, Shandong, China
| | - Li Li
- Department of Health Sciences and Kinesiology, Georgia Southern University, Statesboro, GA, United States,*Correspondence: Li Li,
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Delcamp C, Cormier C, Chalard A, Amarantini D, Gasq D. Changes in intermuscular connectivity during active elbow extension reveal a functional simplification of motor control after stroke. Front Neurosci 2022; 16:940907. [PMID: 36278013 PMCID: PMC9583396 DOI: 10.3389/fnins.2022.940907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 09/09/2022] [Indexed: 11/30/2022] Open
Abstract
Background Stroke alters muscle co-activation and notably leads to exaggerated antagonist co-contraction responsible for impaired motor function. However, the mechanisms underlying this exaggerated antagonist co-contraction remain unclear. To fill this gap, the analysis of oscillatory synchronicity in electromyographic signals from synergistic muscles, also called intermuscular coherence, was a relevant tool. Objective This study compares functional intermuscular connectivity between muscle pairs of the paretic and non-paretic upper limbs of stroke subjects and the dominant limb of control subjects, concomitantly between two muscle pairs with a different functional role, through an intermuscular coherence analysis. Methods Twenty-four chronic stroke subjects and twenty-four healthy control subjects were included. Subjects performed twenty elbow extensions while kinematic data and electromyographic activity of both flexor and extensor elbow muscles were recorded. Intermuscular coherence was analyzed in the beta frequency band compared to the assessment of antagonist co-contraction. Results Intermuscular coherence was higher in the stroke subjects’ paretic limbs compared to control subjects. For stroke subjects, the intermuscular coherence of the antagonist-antagonist muscle pair (biceps brachii—brachioradialis) was higher than that of the agonist-antagonist muscle pair (triceps brachii—brachioradialis). For the paretic limb, intermuscular coherence of the antagonist-antagonist muscle pair presented a negative relationship with antagonist co-contraction. Conclusion Differences in intermuscular coherence between the paretic limbs of stroke subjects and control subjects suggest a higher common central drive during movement. Furthermore, results highlight the association between stroke-related alteration of intermuscular functional connectivity and the alteration of motor function.
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Affiliation(s)
- Célia Delcamp
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
| | - Camille Cormier
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
- Department of Functional Physiological Explorations, University Hospital of Toulouse, Hôpital de Rangueil, Toulouse, France
| | - Alexandre Chalard
- Department of Neurology, University of California, Los Angeles, Los Angeles, CA, United States
- California Rehabilitation Institute, Los Angeles, CA, United States
| | - David Amarantini
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
- *Correspondence: David Amarantini,
| | - David Gasq
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France
- Department of Functional Physiological Explorations, University Hospital of Toulouse, Hôpital de Rangueil, Toulouse, France
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Opplert J, Paizis C, Papitsa A, Blazevich AJ, Cometti C, Babault N. Static stretch and dynamic muscle activity induce acute similar increase in corticospinal excitability. PLoS One 2020; 15:e0230388. [PMID: 32191755 PMCID: PMC7082006 DOI: 10.1371/journal.pone.0230388] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 02/28/2020] [Indexed: 01/31/2023] Open
Abstract
Even though the acute effects of pre-exercise static stretching and dynamic muscle activity on muscular and functional performance have been largely investigated, their effects on the corticospinal pathway are still unclear. For that reason, this study examined the acute effects of 5×20 s of static stretching, dynamic muscle activity and a control condition on spinal excitability, corticospinal excitability and plantar flexor neuromuscular properties. Fifteen volunteers were randomly tested on separate days. Transcranial magnetic stimulation was applied to investigate corticospinal excitability by recording the amplitude of the motor-evoked potential (MEP) and the duration of the cortical silent period (cSP). Peripheral nerve stimulation was applied to investigate (i) spinal excitability using the Hoffmann reflex (Hmax), and (ii) neuromuscular properties using the amplitude of the maximal M-wave (Mmax) and corresponding peak twitch torque. These measurements were performed with a background 30% of maximal voluntary isometric contraction. Finally, the maximal voluntary isometric contraction torque and the corresponding electromyography (EMG) from soleus, gastrocnemius medialis and gastrocnemius lateralis were recorded. These parameters were measured immediately before and 10 s after each conditioning activity of plantar flexors. Corticospinal excitability (MEP/Mmax) was significantly enhanced after static stretching in soleus (P = 0.001; ES = 0.54) and gastrocnemius lateralis (P<0.001; ES = 0.64), and after dynamic muscle activity in gastrocnemius lateralis (P = 0.003; ES = 0.53) only. On the other hand, spinal excitability (Hmax/Mmax), cSP duration, muscle activation (EMG/Mmax) as well as maximal voluntary and evoked torque remained unaltered after all pre-exercise interventions. These findings indicate the presence of facilitation of the corticospinal pathway without change in muscle function after both static stretching (particularly) and dynamic muscle activity.
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Affiliation(s)
- Jules Opplert
- INSERM UMR1093-CAPS, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
- Performance Expertise Center, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
- * E-mail:
| | - Christos Paizis
- INSERM UMR1093-CAPS, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
- Performance Expertise Center, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
| | - Athina Papitsa
- INSERM UMR1093-CAPS, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
- Performance Expertise Center, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
| | - Anthony J. Blazevich
- School of Medical and Health Sciences and Centre for Exercise and Sports Science Research, Edith Cowan University, Perth, Australia
| | - Carole Cometti
- INSERM UMR1093-CAPS, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
- Performance Expertise Center, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
| | - Nicolas Babault
- INSERM UMR1093-CAPS, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
- Performance Expertise Center, University of Burgundy Franche-Comté, Faculty of Sport Sciences, Dijon, France
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4
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Barrué-Belou S, Marque P, Duclay J. Supraspinal Control of Recurrent Inhibition during Anisometric Contractions. Med Sci Sports Exerc 2019; 51:2357-2365. [PMID: 31107836 DOI: 10.1249/mss.0000000000002042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Increase in recurrent inhibition was observed during eccentric compared with isometric and concentric maximal voluntary contractions but the neural mechanisms involved in this specific control of the Renshaw cell activity are unknown. This study was designed to investigate the supraspinal control of the recurrent inhibition during anisometric contractions of the plantar flexor muscles. METHODS To that purpose, the paired Hoffmann-reflex (H-reflex) technique permitted to assess changes in homonymous recurrent pathway by comparing the modulations of test and conditioning H-reflexes (H' and H1, respectively) in the soleus (SOL) muscle during maximal and submaximal isometric, concentric and eccentric contractions. Submaximal contraction intensity was set at 50% of the SOL electromyographic activity recorded during maximal isometric contraction. Fourteen volunteer subjects participated in an experimental session designed to assess the activity of the recurrent inhibition pathway. RESULTS The results indicate that the amplitude of H1 normalized to the maximal M-wave were similar (P > 0.05) regardless of the muscle contraction type and intensity. Whatever the contraction intensity, the ratio between H' and H1 amplitudes was significantly decreased (P < 0.05) during eccentric compared with isometric and concentric contractions. Furthermore, this ratio was significantly smaller (P < 0.05) during submaximal compared with maximal contractions whatever the muscle contraction type. CONCLUSION Together, the current results confirm the supraspinal control of the Renshaw cell activity when muscle contraction intensity is modulated and show that this control remains similar for isometric, concentric and eccentric contractions. Data further suggest that recurrent inhibition pathway may serve as variable gain regulator at motoneuronal level to improve resolution in the control of motor output for the SOL during eccentric contractions.
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Affiliation(s)
- Simon Barrué-Belou
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, FRANCE
| | - Philippe Marque
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, FRANCE.,Service de Médecine Physique et Réadaptation, CHU Toulouse Rangueil, Toulouse, FRANCE
| | - Julien Duclay
- Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, FRANCE
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5
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Barrué-Belou S, Marque P, Duclay J. Recurrent inhibition is higher in eccentric compared to isometric and concentric maximal voluntary contractions. Acta Physiol (Oxf) 2018; 223:e13064. [PMID: 29575639 DOI: 10.1111/apha.13064] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 03/07/2018] [Accepted: 03/08/2018] [Indexed: 11/30/2022]
Abstract
AIM This study was designed to investigate the influence of muscle contraction type on spinal recurrent inhibition during maximal voluntary contractions (MVC) of the plantar flexor muscles. METHODS To that purpose, the paired Hoffmann-reflex (H-reflex) technique permitted to assess changes in recurrent pathway by comparing the modulations of test, reference and conditioning H-reflexes (H', Href and H1 respectively) in the soleus muscle during isometric, concentric and eccentric MVC. Twenty-five subjects participated in an experimental session designed to assess the activity of the recurrent inhibition pathway. RESULTS The results indicate that both the electromyographic activity and the amplitude of H1 normalized to the maximal M-wave (Mmax ) were similar regardless of the muscle contraction type while the ratio between H' and H1 amplitudes was significantly smaller during eccentric compared with isometric and concentric MVC. Furthermore, Href and H' amplitudes did not differ significantly during both isometric and concentric MVCs while H' amplitude was significantly lower than Href amplitude during eccentric MVC. In addition, the V/Mmax ratio was similar for all muscle contraction type and greater H' amplitude was significantly correlated with greater V-wave amplitude regardless of the muscle contraction type. CONCLUSION Together, the current results indicate that recurrent inhibition is elevated for the soleus muscle during eccentric compared to isometric and concentric MVC. Data further suggest that the Renshaw cell activity is specifically controlled by the descending neural drive and/or peripheral neural mechanisms during eccentric MVC.
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Affiliation(s)
- S. Barrué-Belou
- Toulouse NeuroImaging Center; Université de Toulouse, Inserm, UPS; Toulouse France
| | - P. Marque
- Toulouse NeuroImaging Center; Université de Toulouse, Inserm, UPS; Toulouse France
- Service de Médecine Physique et Réadaptation; CHU Toulouse Rangueil; Toulouse France
| | - J. Duclay
- Toulouse NeuroImaging Center; Université de Toulouse, Inserm, UPS; Toulouse France
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Aagaard P. Autogenic recurrent Renshaw inhibition is elevated in human spinal motor neurones during maximal eccentric muscle contraction in vivo. Acta Physiol (Oxf) 2018; 223:e13107. [PMID: 29855148 DOI: 10.1111/apha.13107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P. Aagaard
- Department of Sports Science and Clinical Biomechanics; Research Unit for Muscle Physiology and Biomechanics; University of Southern Denmark; Odense Denmark
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Aagaard P. Spinal and supraspinal control of motor function during maximal eccentric muscle contraction: Effects of resistance training. JOURNAL OF SPORT AND HEALTH SCIENCE 2018; 7:282-293. [PMID: 30356634 PMCID: PMC6189238 DOI: 10.1016/j.jshs.2018.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 03/22/2018] [Accepted: 03/24/2018] [Indexed: 06/08/2023]
Abstract
Neuromuscular activity is suppressed during maximal eccentric (ECC) muscle contraction in untrained subjects owing to attenuated levels of central activation and reduced spinal motor neuron (MN) excitability indicated by reduced electromyography signal amplitude, diminished evoked H-reflex responses, increased autogenic MN inhibition, and decreased excitability in descending corticospinal motor pathways. Maximum ECC muscle force recorded during maximal voluntary contraction can be increased by superimposed electrical muscle stimulation only in untrained individuals and not in trained strength athletes, indicating that the suppression in MN activation is modifiable by resistance training. In support of this notion, maximum ECC muscle strength can be increased by use of heavy-load resistance training owing to a removed or diminished suppression in neuromuscular activity. Prolonged (weeks to months) of heavy-load resistance training results in increased H-reflex and V-wave responses during maximal ECC muscle actions along with marked gains in maximal ECC muscle strength, indicating increased excitability of spinal MNs, decreased presynaptic and/or postsynaptic MN inhibition, and elevated descending motor drive. Notably, the use of supramaximal ECC resistance training can lead to selectively elevated V-wave responses during maximal ECC contraction, demonstrating that adaptive changes in spinal circuitry function and/or gains in descending motor drive can be achieved during maximal ECC contraction in response to heavy-load resistance training.
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8
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Valadão P, Kurokawa S, Finni T, Avela J. Effects of muscle action type on corticospinal excitability and triceps surae muscle-tendon mechanics. J Neurophysiol 2018; 119:563-572. [PMID: 29118191 DOI: 10.1152/jn.00079.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
This study investigated whether the specific motor control strategy reported for eccentric muscle actions is dependent on muscle mechanical behavior. Motor evoked potentials, Hoffman reflex (H-reflex), fascicle length, pennation angle, and fascicle velocity of soleus muscle were compared between isometric and two eccentric conditions. Ten volunteers performed maximal plantarflexion trials in isometric, slow eccentric (25°/s), and fast eccentric (100°/s) conditions, each in a different randomized testing session. H-reflex normalized by the preceding M wave (H/M) was depressed in both eccentric conditions compared with isometric ( P < 0.001), while no differences in fascicle length and pennation angle were found among conditions. Furthermore, although the fast eccentric condition had greater fascicle velocity than slow eccentric ( P = 0.001), there were no differences in H/M. There were no differences in motor evoked potential size between conditions, and silent period was shorter for both eccentric conditions compared with isometric ( P = 0.009). Taken together, the present results corroborate the hypothesis that the central nervous system has an unique activation strategy during eccentric muscle actions and suggest that sensory feedback does not play an important role in modulating these muscle actions. NEW & NOTEWORTHY The present study provides new insight into the motor control of eccentric muscle actions. It was demonstrated that task-dependent corticospinal excitability modulation does not seem to depend on sensory information processing. These findings support the hypothesis that the central nervous system has a unique activation strategy during eccentric muscle actions.
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Affiliation(s)
- P Valadão
- Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyväskylä , Jyväskylä , Finland
| | - S Kurokawa
- Center for Liberal Arts, Meiji Gakuin University , Yokohama , Japan
| | - T Finni
- Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyväskylä , Jyväskylä , Finland
| | - J Avela
- Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyväskylä , Jyväskylä , Finland
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9
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Budini F, Tilp M. Changes in H-reflex amplitude to muscle stretch and lengthening in humans. Rev Neurosci 2018; 27:511-22. [PMID: 27089411 DOI: 10.1515/revneuro-2016-0001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/10/2016] [Indexed: 11/15/2022]
Abstract
Spinal reflex excitability is traditionally assessed to investigate neural adjustments that occur during human movement. Different experimental procedures are known to condition spinal reflex excitability. Among these, lengthening movements and static stretching the human triceps have been investigated over the last 50 years. The purpose of this review is to shed light on several apparent incongruities in terms of magnitude and duration of the reported results. In the present review dissimilarities in neuro-spinal changes are examined in relation to the methodologies applied to condition and measure them. Literature that investigated three different conditioning procedures was reviewed: passive dorsiflexion, active dorsiflexion through antagonists shortening and eccentric plantar-flexors contractions. Measurements were obtained before, during and after lengthening or stretching. Stimulation intensities and time delays between conditioning procedures and stimuli varied considerably. H-reflex decreases immediately as static stretching is applied and in proportion to the stretch degree. During dorsiflexions the inhibition is stronger with greater dorsiflexion angular velocity and at lower nerve stimulation intensities, while it is weaker if any concomitant muscle contraction is performed. Within 2 s after a single passive dorsiflexion movement, H-reflex is strongly inhibited, and this effect disappears within 15 s. Dorsiflexions repeated over 1 h and prolonged static stretching training induce long-lasting inhibition. This review highlights that the apparent disagreement between studies is ascribable to small methodological differences. Lengthening movements and stretching can strongly influence spinal neural pathways. Results interpretation, however, needs careful consideration of the methodology applied.
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Vinstrup J, Madeleine P, Jakobsen MD, Jay K, Andersen LL. Patient Transfers and Risk of Back Injury: Protocol for a Prospective Cohort Study With Technical Measurements of Exposure. JMIR Res Protoc 2017; 6:e212. [PMID: 29117932 PMCID: PMC5700406 DOI: 10.2196/resprot.8390] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/13/2017] [Accepted: 09/13/2017] [Indexed: 11/13/2022] Open
Abstract
Background More than one third of nurses experience musculoskeletal pain several times during a normal work week. Consistent use of assistive devices during patient transfers is associated with a lower risk of occupational back injuries and low back pain (LBP). While uncertainties exist regarding which type of assistive devices most efficiently prevent LBP, exposure assessments using technological advancements allow for quantification of muscle load and body positions during common work tasks. Objective The main objectives of this study are (1) to quantify low back and neck/shoulder muscle load in Danish nurses during patient transfers performed with different types of assistive devices, and (2) to combine the exposure profile for each type of assistive device with fortnightly questionnaires to identify the importance of muscle load (intensity and frequency of transfers) and body position (degree of back inclination and frequency) on LBP intensity and risk of back injury during a patient transfer. Methods A combination of technical measurements (n=50) and a prospective study design (n=2000) will be applied on a cohort of female nurses in Danish hospitals. The technical measurements will be comprised of surface electromyography and accelerometers, with the aim of quantifying muscle load and body positions during various patient transfers, including different types of assistive devices throughout a workday. The study will thereby gather measurements during real-life working conditions. The prospective cohort study will consist of questionnaires at baseline and 1-year follow-up, as well as follow-up via email every other week for one year on questions regarding the frequency of patient transfers, use of assistive devices, intensity of LBP, and back injuries related to patient transfers. The objective measurements on muscle load and body positions during patient handlings will be applied to the fortnightly replies regarding frequency of patient transfer and use of different assistive devices, in order to identify risk factors for back injuries related to patient transfers and intensity of LBP. Results Data collection is scheduled to commence during the winter of 2017. Conclusions The design of this study is novel in its combination of technical measurements applied on a prospective cohort, and the results will provide important information about which assistive devices are associated with intensity of LBP and risk of back injury related to patient transfers. Furthermore, this study will shed light on the dose-response relationship between intensity, duration, and frequency of patient transfers and the intensity of LPB in Danish nurses, and will thereby help to guide and improve electronic health practices among this population.
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Affiliation(s)
- Jonas Vinstrup
- Department of Musculoskeletal Disorders, National Research Centre for the Working Environment, Copenhagen, Denmark.,Department of Health Science and Technology, Physical Activity and Human Performance Group, SMI, Aalborg University, Aalborg, Denmark
| | - Pascal Madeleine
- Department of Health Science and Technology, Physical Activity and Human Performance Group, SMI, Aalborg University, Aalborg, Denmark
| | - Markus Due Jakobsen
- Department of Musculoskeletal Disorders, National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Kenneth Jay
- The Carrick Institute for Graduate Studies, Institute of Clinical Neuroscience and Rehabilitation, Florida, FL, United States
| | - Lars Louis Andersen
- Department of Musculoskeletal Disorders, National Research Centre for the Working Environment, Copenhagen, Denmark.,Department of Health Science and Technology, Physical Activity and Human Performance Group, SMI, Aalborg University, Aalborg, Denmark
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Yao WX, Jiang Z, Li J, Jiang C, Franlin CG, Lancaster JL, Huang Y, Yue GH. Brain Functional Connectivity Is Different during Voluntary Concentric and Eccentric Muscle Contraction. Front Physiol 2016; 7:521. [PMID: 27895590 PMCID: PMC5108928 DOI: 10.3389/fphys.2016.00521] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 10/24/2016] [Indexed: 11/13/2022] Open
Abstract
Previous studies report greater activation in the cortical motor network in controlling eccentric contraction (EC) than concentric contraction (CC) of human skeletal muscles despite lower activation level of the muscle associated with EC. It is unknown, however, whether the strength of functional coupling between the primary motor cortex (M1) and other involved areas in the brain differs as voluntary movements are controlled by a network of regions in the primary, secondary and association cortices. Examining fMRI-based functional connectivity (FC) offers an opportunity to measure strength of such coupling. To address the question, we examined functional MRI (fMRI) data acquired during EC and CC (20 contractions each with similar movement distance and speed) of the right first dorsal interosseous (FDI) muscle in 11 young (20-32 years) and healthy individuals and estimated FC between the M1 and a number of cortical regions in the motor control network. The major findings from the mechanical and fMRI-based FC analysis were that (1) no significant differences were seen in movement distance, speed and stability between the EC and CC; (2) significantly stronger mean FC was found for CC than EC. Our finding provides novel insights for a better understanding of the control mechanisms underlying voluntary movements produced by EC and CC. The finding is potentially helpful for guiding the development of targeted sport training and/or therapeutic programs for performance enhancement and injury prevention.
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Affiliation(s)
- Wan X Yao
- Department of Kinesiology, Health, and Nutrition, University of Texas at San Antonio San Antonio, TX, USA
| | - Zhiguo Jiang
- Human Performance and Engineering Research, Kessler Foundation West Orange, NJ, USA
| | - Jinqi Li
- Research Imaging Center, University of Texas Health Science Center at San Antonio San Antonio, TX, USA
| | - Changhao Jiang
- Beijing Key Lab of Physical Fitness Evaluation and Tech Analysis, Capital University of Physical Education and Sports Beijing, China
| | - Crystal G Franlin
- Research Imaging Center, University of Texas Health Science Center at San Antonio San Antonio, TX, USA
| | - Jack L Lancaster
- Research Imaging Center, University of Texas Health Science Center at San Antonio San Antonio, TX, USA
| | - Yufei Huang
- Department of Kinesiology, Health, and Nutrition, University of Texas at San Antonio San Antonio, TX, USA
| | - Guang H Yue
- Human Performance and Engineering Research, Kessler Foundation West Orange, NJ, USA
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Cattagni T, Scaglioni G, Laroche D, Gremeaux V, Martin A. The involvement of ankle muscles in maintaining balance in the upright posture is higher in elderly fallers. Exp Gerontol 2016; 77:38-45. [DOI: 10.1016/j.exger.2016.02.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 01/15/2016] [Accepted: 02/15/2016] [Indexed: 12/17/2022]
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Cattagni T, Martin A, Scaglioni G. Is spinal excitability of the triceps surae mainly affected by muscle activity or body position? J Neurophysiol 2014; 111:2525-32. [DOI: 10.1152/jn.00455.2013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to determine how muscle activity and body orientation contribute to the triceps surae spinal transmission modulation, when moving from a sitting to a standing position. Maximal Hoffmann-reflex (Hmax) and motor potential (Mmax) were evoked in the soleus (SOL), medial and lateral gastrocnemius in 10 male subjects and in three conditions, passive sitting, active sitting and upright standing, with the same SOL activity in active sitting and upright standing. Moreover volitional wave (V) was evoked in the two active conditions (i.e., active sitting and upright standing). The results showed that SOL Hmax/Mmax was lower in active sitting than in passive sitting, while for the gastrocnemii it was not significantly altered. For the three plantar flexors, Hmax/Mmax was lower in upright standing than in active sitting, whereas V/Mmax was not modulated. SOL H-reflex is therefore affected by the increase in muscle activity and change in body orientation, while, in the gastrocnemii, it was only affected by a change in posture. In conclusion, passing from a sitting to a standing position affects the Hmax/Mmax of the whole triceps surae, but the mechanisms responsible for this change differ among the synergist muscles. The V/Mmax does not change when upright stance is assumed. This means that the increased inhibitory activity in orthostatic position is compensated by an increased excitatory inflow to the α-motoneurons of central and/or peripheral origin.
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Affiliation(s)
- T. Cattagni
- Institut National de la Santé et de la Recherche Médicale 1093, Faculty of Sport Science, University of Burgundy, Dijon, France
| | - A. Martin
- Institut National de la Santé et de la Recherche Médicale 1093, Faculty of Sport Science, University of Burgundy, Dijon, France
| | - G. Scaglioni
- Institut National de la Santé et de la Recherche Médicale 1093, Faculty of Sport Science, University of Burgundy, Dijon, France
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Yao WX, Li J, Jiang Z, Gao JH, Franklin CG, Huang Y, Lancaster JL, Yue GH. Aging interferes central control mechanism for eccentric muscle contraction. Front Aging Neurosci 2014; 6:86. [PMID: 24847261 PMCID: PMC4023019 DOI: 10.3389/fnagi.2014.00086] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Accepted: 04/23/2014] [Indexed: 11/13/2022] Open
Abstract
Previous studies report greater activation in the cortical motor network in controlling eccentric contraction (EC) than concentric contraction (CC) despite lower muscle activation level associated with EC vs. CC in healthy, young individuals. It is unknown, however, whether elderly people exhibiting increased difficulties in performing EC than CC possess this unique cortical control mechanism for EC movements. To address this question, we examined functional magnetic resonance imaging (fMRI) data acquired during EC and CC of the first dorsal interosseous (FDI) muscle in 11 young (20–32 years) and 9 old (67–73 years) individuals. During the fMRI experiment, all subjects performed 20 CC and 20 EC of the right FDI with the same angular distance and velocity. The major findings from the behavioral and fMRI data analysis were that (1) movement stability was poorer in EC than CC in the old but not the young group; (2) similar to previous electrophysiological and fMRI reports, the EC resulted in significantly stronger activation in the motor control network consisting of primary, secondary and association motor cortices than CC in the young and old groups; (3) the biased stronger activation towards EC was significantly greater in the old than the young group especially in the secondary and association cortices such as supplementary and premotor motor areas and anterior cingulate cortex; and (4) in the primary motor and sensory cortices, the biased activation towards EC was significantly greater in the young than the old group. Greater activation in higher-order cortical fields for controlling EC movement by elderly adults may reflect activities in these regions to compensate for aging-related impairments in the ability to control complex EC movements. Our finding is useful for potentially guiding the development of targeted therapies to counteract age-related movement deficits and to prevent injury.
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Affiliation(s)
- Wan X Yao
- Department of Kinesiology, Health, and Nutrition, College of Education and Human Development, The University of Texas at San Antonio San Antonio, TX, USA
| | - Jinqi Li
- Research Imaging Institute, The University of Texas Health Science Center at San Antonio San Antonio, TX, USA
| | - Zhiguo Jiang
- Human Performance and Engineering Laboratory, Kessler Foundation Research Center West Orange, NJ, USA ; Department of Biomedical Engineering, New Jersey Institute of Technology Newark, NJ, USA
| | - Jia-Hong Gao
- IDG/McGovern Institute for Brain Research, Peking University Beijing, China
| | - Crystal G Franklin
- Research Imaging Institute, The University of Texas Health Science Center at San Antonio San Antonio, TX, USA
| | - Yufei Huang
- Department of Kinesiology, Health, and Nutrition, College of Education and Human Development, The University of Texas at San Antonio San Antonio, TX, USA
| | - Jack L Lancaster
- Research Imaging Institute, The University of Texas Health Science Center at San Antonio San Antonio, TX, USA
| | - Guang H Yue
- Human Performance and Engineering Laboratory, Kessler Foundation Research Center West Orange, NJ, USA
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15
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Grosprêtre S, Papaxanthis C, Martin A. Modulation of spinal excitability by a sub-threshold stimulation of M1 area during muscle lengthening. Neuroscience 2014; 263:60-71. [DOI: 10.1016/j.neuroscience.2014.01.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 12/16/2013] [Accepted: 01/07/2014] [Indexed: 10/25/2022]
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16
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Hébert-Losier K, Holmberg HC. Knee angle-specific MVIC for triceps surae EMG signal normalization in weight and non weight-bearing conditions. J Electromyogr Kinesiol 2013; 23:916-23. [DOI: 10.1016/j.jelekin.2013.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/01/2013] [Accepted: 03/27/2013] [Indexed: 10/26/2022] Open
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Tallent J, Goodall S, Hortobágyi T, St Clair Gibson A, French DN, Howatson G. Repeatability of corticospinal and spinal measures during lengthening and shortening contractions in the human tibialis anterior muscle. PLoS One 2012; 7:e35930. [PMID: 22563418 PMCID: PMC3338551 DOI: 10.1371/journal.pone.0035930] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 03/27/2012] [Indexed: 01/01/2023] Open
Abstract
Elements of the human central nervous system (CNS) constantly oscillate. In addition, there are also methodological factors and changes in muscle mechanics during dynamic muscle contractions that threaten the stability and consistency of transcranial magnetic stimulation (TMS) and perpherial nerve stimulation (PNS) measures.
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Affiliation(s)
- Jamie Tallent
- School of Life Sciences, Northumbria University, Newcastle-upon-Tyne, United Kingdom
| | - Stuart Goodall
- School of Life Sciences, Northumbria University, Newcastle-upon-Tyne, United Kingdom
| | - Tibor Hortobágyi
- University Medical Center of Groningen, University of Groningen, Groningen, The Netherlands
| | - Alan St Clair Gibson
- School of Life Sciences, Northumbria University, Newcastle-upon-Tyne, United Kingdom
| | - Duncan N. French
- School of Life Sciences, Northumbria University, Newcastle-upon-Tyne, United Kingdom
| | - Glyn Howatson
- School of Life Sciences, Northumbria University, Newcastle-upon-Tyne, United Kingdom
- Centre for Aquatic Research, University of Johannesburg, Gauteng, South Africa
- * E-mail:
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18
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Tokuno CD, Lichtwark GA, Cresswell AG. Modulation of the soleus H-reflex during knee rotations is not consistent with muscle fascicle length changes. Eur J Appl Physiol 2012; 112:3259-66. [PMID: 22234398 DOI: 10.1007/s00421-011-2302-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 12/26/2011] [Indexed: 10/14/2022]
Abstract
The purpose of this study was to examine whether passively rotating the knee would result in parallel or differential changes to the medial gastrocnemius (MG) and soleus (SOL) H-reflex amplitudes. Since passive knee rotation alters the muscle length of the MG, but not the SOL, it was hypothesized that the MG H-reflex would reflect the lengthening or shortening actions that occur during knee rotation, whereas the SOL H-reflex would remain unaltered. MG and SOL Hoffman reflexes (H-reflexes) were evoked with the knee joint held static at 10° or as the joint was passively flexed or extended past 10°. Ultrasound recordings were used to confirm whether the knee rotations altered MG but not SOL muscle fascicle lengths. In contrast to our hypothesis, results indicated that the MG and SOL H-reflexes were similarly affected during knee rotations, with both MG and SOL H(max):M(max) smaller during the knee extension than the knee flexion (33-43% reduction) and static (22-28% reduction) conditions. Parallel changes to the MG and SOL H-reflexes occurred despite a differential effect of knee rotation on muscle fascicle lengths. Whereas, MG muscle fascicles lengthened and shortened during knee extension and flexion, respectively, SOL fascicles length remained unchanged. Given the strong neural coupling between the MG and SOL motoneuron pools, the results highlight the difficulty in isolating specific variables (e.g., muscle length) when determining the modulatory influences on the triceps surae H-reflex amplitude.
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Affiliation(s)
- Craig D Tokuno
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.
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Duclay J, Pasquet B, Martin A, Duchateau J. Specific modulation of corticospinal and spinal excitabilities during maximal voluntary isometric, shortening and lengthening contractions in synergist muscles. J Physiol 2011; 589:2901-16. [PMID: 21502288 DOI: 10.1113/jphysiol.2011.207472] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
This study was designed to investigate the cortical and spinal mechanisms involved in the modulations of neural activation during lengthening compared with isometric and shortening maximal voluntary contractions (MVCs). Two muscles susceptible to different neural adjustments at the spinal level, the soleus (SOL) and medial gastrocnemius (MG), were compared. Twelve healthy males participated in at least two experimental sessions designed to assess corticospinal and spinal excitabilities. We compared the modulation of motor evoked potentials (MEPs) in response to transcranial magnetic stimulation and Hoffmann reflexes (H-reflexes) during isometric and anisometric MVCs. The H-reflex and MEP responses, recorded during lengthening and shortening MVCs, were compared with those obtained during isometric MVCs. The results indicate that the maximal amplitude of both MEP and H-reflex in the SOL were smaller (P < 0.01) during lengthening MVCs compared with isometric and shortening MVCs but similar (P > 0.05) in MG for all three muscle contraction types. The silent period that follows maximal MEPs was reduced (P < 0.01) during lengthening MVCs in the SOL but not the MG. Similar observations were obtained regardless of the initial length of the MG muscle. Collectively, the current results indicate that the relative contribution of both cortical and spinal mechanisms to the modulation of neural activation differs during lengthening MVCs and between two synergist muscles. The comparison of SOL and MG responses further suggests that the specific modulation of the corticospinal excitability during lengthening MVCs depends mainly on pre- and postsynaptic inhibitory mechanisms acting at the spinal level.
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Affiliation(s)
- Julien Duclay
- Université de Toulouse, UPS, PRISSMH, 118 route de Narbonne, Toulouse 31062, France.
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