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Cho H, Dohi T, Wakai H, Quong WL, Linh NDT, Usami S, Ogawa R. In the face and neck, keloid scar distribution is related to skin thickness and stiffness changes associated with movement. Wound Repair Regen 2024; 32:419-428. [PMID: 38602106 DOI: 10.1111/wrr.13180] [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: 09/07/2023] [Revised: 02/25/2024] [Accepted: 04/01/2024] [Indexed: 04/12/2024]
Abstract
Keloid scars tend to occur in high-tension sites due to mechanical stimuli that are involved in their development. To date, a detailed analysis of keloid distribution focused specifically on facial and neck areas has not been reported, and limited literature exists as to the related mechanical factors. To rectify this deficiency of knowledge, we first quantified the facial and neck keloid distribution observed clinically in 113 patients. Subsequently, we performed a rigorous investigation into the mechanical factors and their associated changes at these anatomic sites in healthy volunteers without a history of pathologic scarring. The association between keloid-predilection sites and sebaceous gland-dense and acne-prone sites was also examined. To assess skin stretch, thickness and stiffness, VECTRA, ultrasound and indentometer were utilised. Baseline skin stiffness and thickness were measured, as well as the magnitude of change in these values associated with facial expression and postural changes. Within the face and neck, keloids were most common near the mandibular angle (41.3%) and lateral submental (20.0%) regions. These areas of increased keloid incidence were not associated with areas more dense in sebaceous glands, nor linked consistently with acne-susceptible regions. Binomial logistic regression revealed that changes in skin stiffness and thickness related to postural changes significantly predicted keloid distribution. Skin stiffness and thickness changes related to prolonged mechanical forces (postural changes) are most pronounced at sites of high keloid predilection. This finding further elucidates the means by which skin stretch and tension are related to keloid development. As a more detailed analysis of mechanical forces on facial and neck skin, this study evaluates the nuances of multiple skin-mechanical properties, and their changes in a three-dimensional framework. Such factors may be critical to better understanding keloid progression and development in the face and neck.
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Affiliation(s)
- Hoyu Cho
- Department of Plastic, Reconstructive and Regenerative Surgery, Nippon Medical School, Tokyo, Japan
| | - Teruyuki Dohi
- Department of Plastic, Reconstructive and Regenerative Surgery, Nippon Medical School, Tokyo, Japan
| | - Hanae Wakai
- Department of Plastic, Reconstructive and Regenerative Surgery, Nippon Medical School, Tokyo, Japan
| | - Whitney Laurel Quong
- Department of Plastic, Reconstructive and Regenerative Surgery, Nippon Medical School, Tokyo, Japan
- Department of Plastic, Reconstructive, and Aesthetic Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Nguyen Doan Tien Linh
- Department of Plastic, Reconstructive and Regenerative Surgery, Nippon Medical School, Tokyo, Japan
| | - Satoshi Usami
- Department of Plastic, Reconstructive and Regenerative Surgery, Nippon Medical School, Tokyo, Japan
- Graduate School of Education, The University of Tokyo, Tokyo, Japan
| | - Rei Ogawa
- Department of Plastic, Reconstructive and Regenerative Surgery, Nippon Medical School, Tokyo, Japan
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Alshehri MA, van den Hoorn W, Klyne DM, van Dieën JH, Cholewicki J, Hodges PW. Poor lumbar spine coordination in acute low back pain predicts persistent long-term pain and disability. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2024; 33:2380-2394. [PMID: 38483640 DOI: 10.1007/s00586-024-08205-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/22/2023] [Accepted: 02/23/2024] [Indexed: 06/29/2024]
Abstract
PURPOSE Sitting balance on an unstable surface requires coordinated out-of-phase lumbar spine and provides sufficient challenge to expose quality of spine control. We investigated whether the quality of spine coordination to maintain balance in acute low back pain (LBP) predicts recovery at 6 months. METHODS Participants in an acute LBP episode (n = 94) underwent assessment of sitting balance on an unstable surface. Seat, hip and spine (lower lumbar, lumbar, upper lumbar, thoracic) angular motion and force plate data were recorded. Coordination between the seat and hip/spine segments to maintain balance was quantified in the frequency domain to evaluate coordination (coherence) and relative timing (phase angle: in-phase [segments move together]; out-of-phase [segments move opposite]). Center of pressure (CoP) and upper thorax motion assessed overall balance performance. Hip and spine coordination with the seat were compared between those who did not recover (increased/unchanged pain/disability), partially recovered (reduced pain/disability) or recovered (no pain and disability) at 6 months. RESULTS In both planes, coherence between the seat and lower lumbar spine was lower (and in-phase-unhelpful for balance) at baseline in those who did not recover than those who recovered. Coherence between the seat and hip was higher in partially recovered in both planes, suggesting compensation by the hip. LBP groups had equal overall balance performance (CoP, upper thorax motion), but non-recovery groups used a less optimal strategy that might have consequences for long-term spine health. CONCLUSION These longitudinal data revealed that individuals with compromised contribution of the lumbar spine to the balance during unstable sitting during acute LBP are less likely to recover.
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Affiliation(s)
- Mansour Abdullah Alshehri
- The University of Queensland, Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, QLD, Australia
- Physiotherapy Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Wolbert van den Hoorn
- The University of Queensland, Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, QLD, Australia
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - David M Klyne
- The University of Queensland, Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, QLD, Australia
| | - Jaap H van Dieën
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Jacek Cholewicki
- Center for Neuromusculoskeletal Clinical Research, Michigan State University, Lansing, MI, USA
- Department of Osteopathic Manipulative Medicine, Michigan State University, East Lansing, MI, USA
| | - Paul W Hodges
- The University of Queensland, Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, QLD, Australia.
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da Conceição GZ, Gardinal M, Kreutz GM, Rocha NACF, Pavão SL. How Does Postural Control of Children with CP Deal with Manipulations on Base of Support and Support Surface? A Systematic Review. Dev Neurorehabil 2024; 27:93-105. [PMID: 38720440 DOI: 10.1080/17518423.2024.2348002] [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: 05/08/2023] [Accepted: 04/23/2024] [Indexed: 07/08/2024]
Abstract
AIMS Systematically review literature addressing the effects of changes in base of support (BoS) configuration and characteristics of support surface (SS) on postural control of children with cerebral palsy (CP). METHODS We conducted a tailored electronic database search in PubMed/Web of Science/SCOPUS/Embase. RESULTS We identified 15 studies meeting inclusion criteria. CONCLUSION The extant literature suggests that when children with CP experience changes in BoS and SS, they engage in fewer adaptive postural control responses than typically developing children. Documented response patterns of children with CP in the literature might guide the selection and development of rehabilitation strategies to appropriately facilitate or challenge postural control in children with CP.
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Affiliation(s)
- Giovana Z da Conceição
- Department of Prevention and Rehabilitation in Physical Therapy, Federal University of Paraná, Curitiba, Brazil
| | - Marina Gardinal
- Department of Prevention and Rehabilitation in Physical Therapy, Federal University of Paraná, Curitiba, Brazil
| | - Giovanna M Kreutz
- Department of Prevention and Rehabilitation in Physical Therapy, Federal University of Paraná, Curitiba, Brazil
| | | | - Silvia Leticia Pavão
- Department of Prevention and Rehabilitation in Physical Therapy, Federal University of Paraná, Curitiba, Brazil
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Rasman BG, Blouin JS, Nasrabadi AM, van Woerkom R, Frens MA, Forbes PA. Learning to stand with sensorimotor delays generalizes across directions and from hand to leg effectors. Commun Biol 2024; 7:384. [PMID: 38553561 PMCID: PMC10980713 DOI: 10.1038/s42003-024-06029-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 03/08/2024] [Indexed: 04/02/2024] Open
Abstract
Humans receive sensory information from the past, requiring the brain to overcome delays to perform daily motor skills such as standing upright. Because delays vary throughout the body and change over a lifetime, it would be advantageous to generalize learned control policies of balancing with delays across contexts. However, not all forms of learning generalize. Here, we use a robotic simulator to impose delays into human balance. When delays are imposed in one direction of standing, participants are initially unstable but relearn to balance by reducing the variability of their motor actions and transfer balance improvements to untrained directions. Upon returning to normal standing, aftereffects from learning are observed as small oscillations in control, yet they do not destabilize balance. Remarkably, when participants train to balance with delays using their hand, learning transfers to standing with the legs. Our findings establish that humans use experience to broadly update their neural control to balance with delays.
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Affiliation(s)
- Brandon G Rasman
- Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- School of Physical Education, Sport and Exercise Sciences, University of Otago, Dunedin, New Zealand
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
| | - Jean-Sébastien Blouin
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
- Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, BC, Canada
- Institute for Computing, Information and Cognitive Systems, University of British Columbia, Vancouver, BC, Canada
| | - Amin M Nasrabadi
- School of Kinesiology, University of British Columbia, Vancouver, BC, Canada
| | - Remco van Woerkom
- Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Maarten A Frens
- Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Patrick A Forbes
- Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
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Alshehri MA, Alzahrani H, van den Hoorn W, Klyne DM, Vette AH, Hendershot BD, Roberts BWR, Larivière C, Barbado D, Vera-Garcia FJ, van Dieen JH, Cholewicki J, Nussbaum MA, Madigan ML, Reeves NP, Silfies SP, Brown SHM, Hodges PW. Trunk postural control during unstable sitting among individuals with and without low back pain: A systematic review with an individual participant data meta-analysis. PLoS One 2024; 19:e0296968. [PMID: 38265999 PMCID: PMC10807788 DOI: 10.1371/journal.pone.0296968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/26/2023] [Indexed: 01/26/2024] Open
Abstract
INTRODUCTION Sitting on an unstable surface is a common paradigm to investigate trunk postural control among individuals with low back pain (LBP), by minimizing the influence lower extremities on balance control. Outcomes of many small studies are inconsistent (e.g., some find differences between groups while others do not), potentially due to confounding factors such as age, sex, body mass index [BMI], or clinical presentations. We conducted a systematic review with an individual participant data (IPD) meta-analysis to investigate whether trunk postural control differs between those with and without LBP, and whether the difference between groups is impacted by vision and potential confounding factors. METHODS We completed this review according to PRISMA-IPD guidelines. The literature was screened (up to 7th September 2023) from five electronic databases: MEDLINE, CINAHL, Embase, Scopus, and Web of Science Core Collection. Outcome measures were extracted that describe unstable seat movements, specifically centre of pressure or seat angle. Our main analyses included: 1) a two-stage IPD meta-analysis to assess the difference between groups and their interaction with age, sex, BMI, and vision on trunk postural control; 2) and a two-stage IPD meta-regression to determine the effects of LBP clinical features (pain intensity, disability, pain catastrophizing, and fear-avoidance beliefs) on trunk postural control. RESULTS Forty studies (1,821 participants) were included for the descriptive analysis and 24 studies (1,050 participants) were included for the IPD analysis. IPD meta-analyses revealed three main findings: (a) trunk postural control was worse (higher root mean square displacement [RMSdispl], range, and long-term diffusion; lower mean power frequency) among individuals with than without LBP; (b) trunk postural control deteriorated more (higher RMSdispl, short- and long-term diffusion) among individuals with than without LBP when vision was removed; and (c) older age and higher BMI had greater adverse impacts on trunk postural control (higher short-term diffusion; longer time and distance coordinates of the critical point) among individuals with than without LBP. IPD meta-regressions indicated no associations between the limited LBP clinical features that could be considered and trunk postural control. CONCLUSION Trunk postural control appears to be inferior among individuals with LBP, which was indicated by increased seat movements and some evidence of trunk stiffening. These findings are likely explained by delayed or less accurate corrective responses. SYSTEMATIC REVIEW REGISTRATION This review has been registered in PROSPERO (registration number: CRD42021124658).
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Affiliation(s)
- Mansour Abdullah Alshehri
- NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
- Physiotherapy Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Hosam Alzahrani
- Department of Physical Therapy, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Wolbert van den Hoorn
- NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
| | - David M. Klyne
- NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
| | - Albert H. Vette
- Department of Mechanical Engineering, Donadeo Innovation Centre for Engineering, University of Alberta, Edmonton, Canada
- Glenrose Rehabilitation Hospital, Alberta Health Services, Edmonton, Canada
| | - Brad D. Hendershot
- Extremity Trauma and Amputation Center of Excellence, Defense Health Agency, Falls Church, Virginia, United States of America
| | - Brad W. R. Roberts
- Department of Mechanical Engineering, Donadeo Innovation Centre for Engineering, University of Alberta, Edmonton, Canada
| | - Christian Larivière
- Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Montreal, Quebec, Canada
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal Rehabilitation Institute, Montreal, Quebec, Canada
| | - David Barbado
- Sport Research Centre, Department of Sport Sciences, Miguel Hernández University of Elche, Alicante, Spain
- Institute for Health and Biomedical Research (ISABIAL Foundation), Miguel Hernández University of Elche, Alicante, Spain
| | - Francisco J. Vera-Garcia
- Sport Research Centre, Department of Sport Sciences, Miguel Hernández University of Elche, Alicante, Spain
- Institute for Health and Biomedical Research (ISABIAL Foundation), Miguel Hernández University of Elche, Alicante, Spain
| | - Jaap H. van Dieen
- Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, Netherlands
| | - Jacek Cholewicki
- Center for Neuromusculoskeletal Clinical Research, Michigan State University, Lansing, Michigan, United States of America
- Department of Osteopathic Manipulative Medicine, Michigan State University, East Lansing, Michigan, United States of America
| | - Maury A. Nussbaum
- Virginia Tech-Wake Forest School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia, United States of America
- Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, Virginia, United States of America
| | - Michael L. Madigan
- Virginia Tech-Wake Forest School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia, United States of America
- Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, Virginia, United States of America
| | | | - Sheri P. Silfies
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina, United States of America
| | - Stephen H. M. Brown
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Paul W. Hodges
- NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
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Jouira G, Rebai H, Alexe DI, Sahli S. Postural Balance in Boys With Intellectual Disabilities Who Participate in Soccer Training. Pediatr Exerc Sci 2024:1-9. [PMID: 38242112 DOI: 10.1123/pes.2023-0098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/16/2023] [Accepted: 11/12/2023] [Indexed: 01/21/2024]
Abstract
PURPOSE The aim of this study is to investigate the postural balance in children with intellectual disabilities who participate in soccer training compared with their sedentary peers. METHOD Two groups of boys with intellectual disabilities aged 8-10 years participated in this study: a soccer group (n = 12) and a sedentary group (n = 12). Postural balance was assessed using a force platform under 4 different conditions: open eyes, and closed eyes, on firm and foam surfaces. The Timed Up and Go Test, 10-m Walking Test, and Four-Square Step Test were also conducted. RESULTS The soccer group had significantly lower (P < .05) center of pressure values compared with the sedentary group, on both firm and foam surfaces, but only under the open eyes condition. They were significantly faster (P < .05) in the Timed Up and Go Test, 10-m Walking Test, and Four-Square Step Test compared with their sedentary peers. However, there were no significant differences between the 2 groups on the sit-to-stand and turn-to-sit phases of the Timed Up and Go Test. CONCLUSION Soccer participation may have a positive effect on postural balance in boys with intellectual disabilities. These findings may have implications for the development of exercise programs to improve postural balance and reduce the risk of falls in this population.
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Affiliation(s)
- Ghada Jouira
- Research Laboratory Education, Motricité, Sport et Santé (EM2S) LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax,Tunisia
| | - Haithem Rebai
- Tunisian Research Laboratory 'Sports Performance Optimization' (LR09SEP01), National Center of Medicine and Science in Sports (CNMSS), Tunis,Tunisia
| | - Dan Iulian Alexe
- Department of Physical and Occupational Therapy, "Vasile Alecsandri" University of Bacău, Bacău,Romania
| | - Sonia Sahli
- Research Laboratory Education, Motricité, Sport et Santé (EM2S) LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax,Tunisia
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Pierrieau E, Charissou C, Vernazza-Martin S, Pageaux B, Lepers R, Amarantini D, Fautrelle L. Intermuscular coherence reveals that affective emotional pictures modulate neural control mechanisms during the initiation of arm pointing movements. Front Hum Neurosci 2024; 17:1273435. [PMID: 38249573 PMCID: PMC10799348 DOI: 10.3389/fnhum.2023.1273435] [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: 08/06/2023] [Accepted: 12/04/2023] [Indexed: 01/23/2024] Open
Abstract
Introduction Several studies in psychology provided compelling evidence that emotions significantly impact motor control. Yet, these evidences mostly rely on behavioral investigations, whereas the underlying neurophysiological processes remain poorly understood. Methods Using a classical paradigm in motor control, we tested the impact of affective pictures associated with positive, negative or neutral valence on the kinematics and patterns of muscle activations of arm pointing movements performed from a standing position. The hand reaction and movement times were measured and electromyography (EMG) was used to measure the activities from 10 arm, leg and trunk muscles that are involved in the postural maintenance and arm displacement in pointing movements. Intermuscular coherence (IMC) between pairs of muscles was computed to measure changes in patterns of muscle activations related to the emotional stimuli. Results The hand movement time increased when an emotional picture perceived as unpleasant was presented as compared to when the emotional picture was perceived as pleasant. When an unpleasant emotional picture was presented, beta (β, 15-35 Hz) and gamma (γ, 35-60 Hz) IMC decreased in the recorded pairs of postural muscles during the initiation of pointing movements. Moreover, a linear relationship between the magnitude of the intermuscular coherence in the pairs of posturo-focal muscles and the hand movement time was found in the unpleasant scenarios. Discussion These findings reveal that emotional stimuli can significantly affect the content of the motor command sent by the central nervous system to muscles when performing voluntary goal-directed movements.
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Affiliation(s)
- Emeline Pierrieau
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Paul Sabatier University, Toulouse, France
- Aquitaine Institute for Cognitive and Integrative Neuroscience (INCIA), Université de Bordeaux, Bordeaux, France
| | - Camille Charissou
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Paul Sabatier University, Toulouse, France
- Institut National Universitaire Champollion, EIAP, Département STAPS, Rodez, France
| | - Sylvie Vernazza-Martin
- Université Paris Nanterre, UFR-STAPS, Nanterre, France
- Laboratoire des interactions Cognition, Action, Émotion - LICAÉ, UFR STAPS, Université Paris Nanterre, Nanterre, France
| | - Benjamin Pageaux
- Centre de recherche de l'Institut universitaire de gériatrie de Montréal (CRIUGM), Montréal, QC, Canada
- École de kinésiologie et des sciences de l'activité physique (EKSAP), Faculté de médecine, Université de Montréal, Montréal, QC, Canada
- Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage (CIRCA), Montréal, QC, Canada
| | - Romuald Lepers
- CAPS UMR1093, Institut National de la Santé et de la Recherche Médicale (INSERM), Faculté des Sciences du Sport, Université de Bourgogne-Franche-Comté, Dijon, France
| | - David Amarantini
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Paul Sabatier University, Toulouse, France
| | - Lilian Fautrelle
- ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, Paul Sabatier University, Toulouse, France
- Institut National Universitaire Champollion, EIAP, Département STAPS, Rodez, France
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Noll WP, Phan V, Lee H. Modern smartphone usage can negatively impact postural balance while standing on dynamically challenging grounds. Gait Posture 2024; 107:233-239. [PMID: 37852884 DOI: 10.1016/j.gaitpost.2023.10.010] [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: 01/01/2023] [Revised: 04/16/2023] [Accepted: 10/09/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND While several studies have explored the impacts of smartphone usage on postural balance, their tasks are limited to texting or calling, and the studies were performed on rigid ground. RESEARCH QUESTIONS METHODS: Sixteen healthy young adults were recruited to perform two smartphone tasks: taking selfies and posting statuses on social media; participants were standing on four different grounds: rigid, foam-based compliant, robot-simulated compliant, and robot-simulated oscillatory grounds. The center-of-pressure (CoP) under each foot was recorded via force plates and the net CoP was calculated. Temporal, spatial, and control aspects of postural balance were analyzed by virtual time-to-contact (VTC), CoP path length (PL) and sway area (SA), and switching rate (SR), respectively. Two-way repeated measures analysis of variance (ANOVA) tests were performed for each dependent variable to compare the mean differences between smartphone tasks and ground conditions and their interaction effect. Paired t-tests with Bonferroni correction were used to determine significant differences in post-hoc analyses. RESULTS VTC decreased significantly whereas CoP PL and SA increased significantly during smartphone usage (all p-values <0.001). Interaction effects between task and ground condition (all p-values <0.001) were observed in all measures but SR, implying that the effect of smartphone usage on postural balance can significantly change depending on the ground condition. SIGNIFICANCE These results highlight the potential fall risks due to the impact of modern smartphone usage on standing balance. Understanding the effect of smartphone usage on standing balance and the interaction effect with various ground conditions opens the door for potential balance assistive devices and mobile phone applications to minimize falls.
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Affiliation(s)
- William P Noll
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - Vu Phan
- Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Hyunglae Lee
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA.
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Albishi AM. Why do different motor cortical areas activate the same muscles? Brain Struct Funct 2023; 228:2017-2024. [PMID: 37709903 DOI: 10.1007/s00429-023-02703-1] [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: 03/28/2023] [Accepted: 08/27/2023] [Indexed: 09/16/2023]
Abstract
The cortex contains multiple motor areas, including the primary motor cortex (M1) and supplementary motor area (SMA). Many muscles are represented in both the M1 and SMA, but the reason for this dual representation remains unclear. Previous work has shown that the M1 and SMA representations of a specific human muscle can be differentiated according to their functional connectivity with different brain areas located outside of the motor cortex. It is our perspective that this differential functional connectivity may be the neural substrate that allows an individual muscle to be accessed by distinct neural processes, such as those implementing volitional vs. postural task control. Here, we review existing human and animal literature suggesting how muscles are represented in the M1 and SMA and how these brain regions have distinct functions. We also discuss potential studies to further elucidate the distinct roles of the SMA and M1 in normal and dysfunctional motor control.
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Affiliation(s)
- Alaa M Albishi
- Department of Rehabilitation Sciences-Physical Therapy Division, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
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10
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Bartonek Å, Lidbeck C. Knee Flexion While Walking Exceeds Knee Flexion Contracture in Children with Spastic Cerebral Palsy. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1867. [PMID: 38136069 PMCID: PMC10741394 DOI: 10.3390/children10121867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/17/2023] [Accepted: 11/26/2023] [Indexed: 12/24/2023]
Abstract
Flexed knee gait is commonly related to contractures in children with cerebral palsy (CP). Therefore, knee position while walking was compared with passive knee extension and explored with respect to functional mobility. Gait was assessed with 3D motion analysis in 30 children with bilateral spastic CP, Gross Motor Function Classification System (GMFCS) levels I-III, and in 22 typically developing (TD) children. Knee angle at initial contact (KneeAngleIC) was greater than knee flexion in stance (MinKneeFlexSt) in all groups. MinKneeFlexSt exceeded knee contractures at GMFCS levels II and III. Both KneeAngleIC and MinKneeFlexSt were greater at GMFCS II and III than at GMFCS I and the TD group. The excessive knee flexion while walking at GMFCS II and III could not be explained by knee joint contractures. Functional mobility measured with the timed-up-and-go test took longer in children at GMFCS level III compared to the other groups, assumed to be explained by the energy-requiring flexed knee gait and spatial insecurity. Discriminating between passive knee extension at the physical assessment and maximum knee extension while weight bearing may contribute to further understanding of flexed knee gait and its causes in ambulating children with spastic bilateral CP.
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Affiliation(s)
- Åsa Bartonek
- Division of Paediatric Neurology, Department of Women’s and Children’s Health, Karolinska Institutet, SE-17176 Stockholm, Sweden;
| | - Cecilia Lidbeck
- Division of Paediatric Neurology, Department of Women’s and Children’s Health, Karolinska Institutet, SE-17176 Stockholm, Sweden;
- Motion Analysis Laboratory, Karolinska University Hospital, QA:27, Karolinska vägen 37A, SE-17176 Stockholm, Sweden
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Yu J, Liao Z, Ma X, Qi S, Liang Z, Wei Z, Zhang S. Optimisation of stable flight posture of ski jumping based on computational fluid dynamics simulation technology. Sports Biomech 2023:1-20. [PMID: 37955255 DOI: 10.1080/14763141.2023.2276329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 10/23/2023] [Indexed: 11/14/2023]
Abstract
The stable flight posture that affects sports performance during flight is usually formed by the multiple angles of the athlete-ski posture. At present, research on the flight phase is mainly based on the single-factor impact analysis based on computational fluid dynamics simulation technology, but studies on the multi-factor coupling relationship of two or more factors is less. This study aims to determine the best optimal-level combination based on the simulation model of this work through comprehensive evaluation from the optimisation perspective of multi-factor coupling. Here, a refined model of the athlete-ski system with the characteristics of ski jumping was established. Reynolds time-averaged method was used for the simulation. A three-factor and five-level simulation test was conducted on the relative inclination between skis, the angle between the body and the ski and the ski V-angle through orthogonal experiment design. Our results show that the optimal-level combination of the relative inclination between skis of 120°, the angle between the body and the ski of 20°, and the ski V-angle of 30° is relatively best in terms of aerodynamic characteristics. Simulation results were similar to the results of the winter field data from video analysis, and the results were effective.
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Affiliation(s)
- Jinglun Yu
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Zhangwen Liao
- Institute of Manufacturing Engineering, Huaqiao University, Xiamen, China
| | - Xinying Ma
- Foundation Courses Research Center, Silicon Lake College, Kunshan, China
| | - Shuo Qi
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Zhiqiang Liang
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Zhen Wei
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Shengnian Zhang
- Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
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12
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Harkness-Armstrong C, Hodson-Tole EF, Wood G, Mills R. Children with developmental coordination disorder are less able to fine-tune muscle activity in anticipation of postural perturbations than typically developing counterparts. Front Hum Neurosci 2023; 17:1267424. [PMID: 37964802 PMCID: PMC10641443 DOI: 10.3389/fnhum.2023.1267424] [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: 07/26/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Abstract
The majority of children with developmental coordination disorder (DCD) struggle with static and dynamic balance, yet there is limited understanding of the underlying neuromechanical mechanisms that underpin poor balance control in these children. Eighteen children with DCD and seven typically developing (TD) children aged 7-10 years stood with eyes open on a moveable platform progressively translated antero-posteriorly through three frequencies (0.1, 0.25 and 0.5 Hz). Myoelectric activity of eight leg muscles, whole-body 3D kinematics and centre of pressure were recorded. At each frequency, postural data were divided into transition-state and steady-state cycles. Data were analyzed using a linear mixed model with follow-up Tukey's pairwise comparisons. At the slowest frequency, children with DCD behaved like age-matched TD controls. At the fastest frequency, children with DCD took a greater number of steps, had a greater centre of mass variability, had a greater centre of pressure area, and tended to activate their muscles earlier and for longer than TD children. Children with DCD did not alter their postural response following prolonged exposure to platform movement, however they made more, non-structured postural adjustments in the medio-lateral direction as task difficulty increased. At the faster oscillation frequencies, children with DCD adopted a different muscle recruitment strategy to TD children. Activating their muscles earlier and for longer may suggest that children with DCD attempt to predict and react to postural disturbances, however the resulting anticipatory muscle excitation patterns do not seem as finely tuned to the perturbation as those demonstrated by TD children. Future work should examine the impact of balance training interventions on the muscle recruitment strategies of children with DCD, to ensure optimal interventions can be prescribed.
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Affiliation(s)
- Carla Harkness-Armstrong
- Centre for Physical Activity in Health and Disease, Division of Sport, Health, and Exercise Sciences, Brunel University London, Uxbridge, United Kingdom
| | - Emma F. Hodson-Tole
- Department of Life Sciences, Manchester Metropolitan University, Manchester, United Kingdom
- Manchester Metropolitan University Institute of Sport, Manchester, United Kingdom
| | - Greg Wood
- Manchester Metropolitan University Institute of Sport, Manchester, United Kingdom
- Department of Sport and Exercise Sciences, Manchester Metropolitan University, Manchester, United Kingdom
| | - Richard Mills
- Manchester Metropolitan University Institute of Sport, Manchester, United Kingdom
- Department of Sport and Exercise Sciences, Manchester Metropolitan University, Manchester, United Kingdom
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Acharya BD, Karki A, Prasertsukdee S, Reed D, Rawal L, Baniya PL, Boyd RN. Effect of Adaptive Seating Systems on Postural Control and Activity Performance: A Systematic Review. Pediatr Phys Ther 2023; 35:397-410. [PMID: 37747975 DOI: 10.1097/pep.0000000000001042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
PURPOSE To systematically review the effectiveness of adaptive seating systems on sitting posture, postural control, and seated activity performance in children with cerebral palsy (CP). SUMMARY OF KEY POINTS From 5 databases, 3 of 21 (14%) articles were of good quality based on the Downs and Black checklist. Commercial modular contoured seating and paper-based low-cost, and contoured foam seating were effective at improving sitting posture, postural control, and seated activity performance. Parents and service providers reported that seating systems reduced stress, burden and psychosocial well-being, and quality of life in children with CP. CONCLUSION Limited evidence demonstrated that adaptive seating systems were effective at improving sitting ability and postural control. Randomized controlled trials with objective outcome measures of seating performance in children with CP are needed to evaluate effectiveness. RECOMMENDATIONS FOR CLINICAL PRACTICE Adaptive seating devices are preferred by parents and therapists for children with CP; however, objective measures of seating outcomes are needed.
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Affiliation(s)
- Bishnu Dutta Acharya
- Department of Physical Therapy (Mr Acharya), Karnali Academy of Health Sciences, Jumla, Nepal; Community-Based Rehabilitation (Ms Karki) International Nepal Fellowship, Mugu, Nepal; Faculty of Physical Therapy (Dr Prasertsukdee), Mahidol University, Salaya, Thailand; School of Medical Sciences (Dr Reed), Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia; School of Health, Medical and Applied Sciences (Dr Rawal), Central Queensland University, Sydney, Australia; Nepal Health Research Council (Ms Baniya), Kathmandu, Nepal; Queensland Cerebral Palsy and Rehabilitation Research Centre (Dr Boyd), Faculty of Medicine, The University of Queensland, Brisbane, Australia
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14
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Chen J, Kwok APK, Li Y. Effective utilization of attentional resources in postural control in athletes of skill-oriented sports: an event-related potential study. Front Hum Neurosci 2023; 17:1219022. [PMID: 37694171 PMCID: PMC10483146 DOI: 10.3389/fnhum.2023.1219022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 08/04/2023] [Indexed: 09/12/2023] Open
Abstract
Objective Postural control plays a key role in skill-oriented sports. Athletes of skill-oriented sports (hereinafter referred to as "skilled athletes") usually showed better control ability compared with non-athletes. However, research focused on the single postural task, rarely considering the actual situation in skill-oriented sports in which other processes, such as cognitive control, frequently accompany postural control. This study aims to explore how skilled athletes control their posture under the dual-task situation and use limited attentional resources. Method A total of 26 skilled athletes and 26 non-athletes were required to perform the postural control and N-back tasks simultaneously. Center of pressure (COP) trajectory, reaction times (RTs), and discriminability (d') of N-back tasks were recorded and evaluated, along with event-related potentials, including N1 (Oz, PO7, and PO8), P2 (Fz, FCz, Cz, and Pz) components, and the spectral power of alpha band. Results Skilled athletes demonstrated more postural control stability and a higher d' than non-athletes in all dual tasks. Besides, they showed enhanced N1, P2 amplitudes and reduced alpha band power during dual-tasking. Notably, in skilled athletes, a significant negative correlation between N1 amplitude and d' was observed, while significant positive correlations between alpha band power and postural control performance were also identified. Conclusion This study investigates the potential advantages of skilled athletes in postural control from the view of neuroscience. Compared to non-athletes, skilled athletes could decrease the consumption of attentional resources in postural control and recruit more attentional resources in stimulus discrimination and evaluation in cognitive tasks. Since the allocation of attentional resources plays a crucial part in postural control in skilled athletes, optimizing the postural control training program and the selection of skilled athletes from a dual-task perspective is important.
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Affiliation(s)
- Jiacheng Chen
- College of Education for the Future, Beijing Normal University, Zhuhai, China
| | - Alex Pak Ki Kwok
- Data Science and Policy Studies Programme, Faculty of Social Science, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yanan Li
- Physical Education Department, Zhuhai Campus of Jinan University, Zhuhai, China
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15
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Ciatto L, Pullia M, Tavilla G, Dauccio B, Messina D, De Cola MC, Quartarone A, Cellini R, Bonanno M, Calabrò RS. Do Patients with Parkinson's Disease Benefit from Dynamic Body Weight Support? A Pilot Study on the Emerging Role of Rysen. Biomedicines 2023; 11:2148. [PMID: 37626645 PMCID: PMC10452686 DOI: 10.3390/biomedicines11082148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disorder characterized by motor and non-motor alterations. Typical motor symptoms include resting tremors, bradykinesia (hypokinesia or akinesia), muscular stiffness, gait alterations, and postural instability. In this context, neurorehabilitation may have a pivotal role in slowing the progression of PD, using both conventional and innovative rehabilitation approaches. Thirty patients (15 males and 15 females) affected by PD were enrolled in our study. We randomly divided the patients into two groups, an experimental group (EG) and a control group (CG). In particular, the EG performed gait and balance training using the Rysen system, which is an innovative body weight support (BWS) system, whilst the CG received conventional physiotherapy. Both groups underwent 20 sessions, five times weekly, with each session lasting about 40 min. At the end of the training sessions (T1), we found that both groups (EG and CG) achieved clinical improvements, although the EG showed better scores for post-treatment regarding global motor functioning and postural stability compared to the CG. In conclusion, our results suggest that the Rysen system, which is an innovative BWS tool, could be considered a valid device for improving postural control and global motor functions, when compared to conventional gait training, in patients affected by PD.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Mirjam Bonanno
- IRCCS Centro Neurolesi “Bonino-Pulejo”, Via Palermo, C.da Casazza, S.S 113, 98123 Messina, Italy; (L.C.); (M.P.); (G.T.); (B.D.); (D.M.); (M.C.D.C.); (A.Q.); (R.C.); (R.S.C.)
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16
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Kuch A, Tisserand R, Durand F, Monnet T, Debril JF. Postural adjustments preceding string release in trained archers. J Sports Sci 2023:1-9. [PMID: 37470415 DOI: 10.1080/02640414.2023.2235154] [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: 09/21/2022] [Accepted: 07/03/2023] [Indexed: 07/21/2023]
Abstract
Optimal postural stability is required to perform in archery. Since the dynamic consequences of the string release may disturb postural equilibrium, they should be integrated into an archer motor programme to optimize postural stability. This study aimed to characterize the postural strategy archers use to limit the potentially detrimental impact of the bow release on their postural stability and identify characteristics that may explain a better performance. Six elite and seven sub-elite archers performed a series of 18 shots at 70 metres, standing on two force plates. Postural stability indicators were computed during the aiming and the shooting phase using the trajectory of the centre of pressure. Two postural strategies were defined, as whether they were triggered before (early) or after (late) the string release time. Both groups used anticipated postural adjustments, but elite archers triggered them before the string release more often and sooner. Scores differed between the two groups, but no differences were found between early and late shots. Trained archers seem to have finely integrated the dynamic consequences of their bow motion, triggering anticipated postural adjustments prior to the string release. However, it remains unclear whether this anticipation can positively influence the performance outcome.
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Affiliation(s)
- Andrian Kuch
- Vienne, CRITT Sport Loisirs, Châtellerault, France
- CNRS, Institut PPrime (UPR 3346), CNRS - Université de Poitiers-ISAE-ENSMA, Chasseneuil-du-Poitou, France
| | - Romain Tisserand
- CNRS, Institut PPrime (UPR 3346), CNRS - Université de Poitiers-ISAE-ENSMA, Chasseneuil-du-Poitou, France
- CeRCA, Centre de Recherches Sur la Cognition Et l'Apprentissage (UMR 7295), CNRS, Université de Poitiers, Université de Tours, Poitiers, France
| | - François Durand
- Vienne, CAIPS-CREPS de Poitiers, Vouneuil-Sous-Biard, France
| | - Tony Monnet
- CNRS, Institut PPrime (UPR 3346), CNRS - Université de Poitiers-ISAE-ENSMA, Chasseneuil-du-Poitou, France
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17
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Hu X, Liao J, Hu X, Zeng Z, Wang L. Effects of plantar-sensory treatments on postural control in chronic ankle instability: A systematic review and meta-analysis. PLoS One 2023; 18:e0287689. [PMID: 37368906 DOI: 10.1371/journal.pone.0287689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
OBJECTIVE This study aimed to examine the effects of plantar-sensory treatments on postural control in individuals with chronic ankle instability (CAI). METHODS This study was registered in PROSPERO (registration number CRD42022329985) on May 14, 2022. An extensive search was performed in Pubmed, Embase, Cochrane, Web of Science, and Scopus to identify the potential studies on plantar-sensory treatments affecting postural control before May 2022. The methodological quality of involved studies was assessed using the scale of Physiotherapy Evidence Database (PEDro). The Cochrane Tool and the Risk of Bias in Non-randomized Studies of Interventions assessment tool were used to evaluate the risk of bias in randomised controlled trials (RCTs) and non-RCTs respectively. RevMan 5.4 was utilised to calculate the standardised mean difference (SMD), with 95% confidence interval (CI). RESULTS Eight RCTs with a mean PEDro rating of 6 and four non-RCTs with a mean PEDro rating of 4.75 were included in the quantitative analysis. The types of plantar-sensory treatments included plantar massage, whole-body vibration and textured surface-stimulation treatment. A significant effect of static balance with eyes open (SMD = -0.54; 95% CI: -0.81 to -0.27; p < 0.001) was found and subgroup analysis showed that plantar massage (SMD = -0.49; 95% CI: -0.84 to -0.14; p = 0.006) and whole-body vibration (SMD = -0.66; 95% CI: -1.12 to -0.19; p = 0.005) had positive effects. In the subgroup analysis of anterior dynamic balance, whole-body vibration revealed a significant increase (SMD = 0.60; 95% CI: 0.06-1.14; p = 0.03). The pooled results or subgroup analysis including eyes-closed static balance and other directions of dynamic balance indicated no significant difference (p > 0.05). CONCLUSIONS This meta-analysis indicated that plantar-sensory treatments could improve postural control in CAI, especially the treatments of plantar massage and long-term whole-body vibration.
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Affiliation(s)
- Xiaomei Hu
- Key Laboratory of Exercise and Health Sciences, Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Jingjing Liao
- Key Laboratory of Exercise and Health Sciences, Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Xiaoyue Hu
- Key Laboratory of Exercise and Health Sciences, Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Ziwei Zeng
- Key Laboratory of Exercise and Health Sciences, Ministry of Education, Shanghai University of Sport, Shanghai, China
| | - Lin Wang
- Key Laboratory of Exercise and Health Sciences, Ministry of Education, Shanghai University of Sport, Shanghai, China
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Bartonek Å, Eriksson M, Ericson A, Reimeringer M, Lidbeck C. Evaluation of Knee Position Sense in Children with Motor Disabilities and Children with Typical Development: A Cross-Sectional Study. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1056. [PMID: 37371287 DOI: 10.3390/children10061056] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND In children with motor disabilities, knee position during walking is often of concern in rehabilitation. This study aimed to investigate knee joint position sense. Thirty-seven children with Cerebral Palsy (CP), 21 with Myelomeningocele (MMC), 19 with Arthrogryposis (AMC), and 42 TD children participated in the study. Knee joint position sense, i.e., the difference between the criterion angle and the reproduced angle (JPS-error), was assessed in sitting while 3D motion capture was recorded at flexed knee 70 (Knee70), 45 (Knee45), and 20 (Knee20) degrees, and after three seconds at maintained criterion angle (CAM) and maintained reproduced angle (RAM). No differences were found between the groups in JPS-error, CAM, and RAM. At Knee70, CAM differed between the right and left legs in the TD group (p = 0.014) and RAM in the MMC group (p = 0.021). In the CP group, CAM was greater than RAM at Knee70 in the left leg (p = 0.002), at Knee45 in both legs (p = 0.004, p = 0.025), and at Knee20 in the right leg (p = 0.038). Difficulties in maintaining the knee position at CAM in the CP group sheds light on the need for complementary judgments of limb proprioception in space to explore the potential influence on knee position during walking.
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Affiliation(s)
- Åsa Bartonek
- Division of Paediatric Neurology, Department of Women's and Children's Health, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Marie Eriksson
- Division of Paediatric Neurology, Department of Women's and Children's Health, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Annika Ericson
- Division of Paediatric Neurology, Department of Women's and Children's Health, Karolinska Institutet, 17176 Stockholm, Sweden
- Motor Control Laboratory QA:27, Astrid Lindgren's Children's Hospital, Karolinska University Hospital, Karolinska Vägen 37A, 17176 Stockholm, Sweden
| | - Mikael Reimeringer
- Division of Paediatric Neurology, Department of Women's and Children's Health, Karolinska Institutet, 17176 Stockholm, Sweden
- Motor Control Laboratory QA:27, Astrid Lindgren's Children's Hospital, Karolinska University Hospital, Karolinska Vägen 37A, 17176 Stockholm, Sweden
| | - Cecilia Lidbeck
- Division of Paediatric Neurology, Department of Women's and Children's Health, Karolinska Institutet, 17176 Stockholm, Sweden
- Motor Control Laboratory QA:27, Astrid Lindgren's Children's Hospital, Karolinska University Hospital, Karolinska Vägen 37A, 17176 Stockholm, Sweden
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Grasso C, Barresi M, Tramonti Fantozzi MP, Lazzerini F, Bruschini L, Berrettini S, Andre P, Dolciotti C, De Cicco V, De Cicco D, d'Ascanio P, Orsini P, Montanari F, Faraguna U, Manzoni D. Effects of a short period of postural training on postural stability and vestibulospinal reflexes. PLoS One 2023; 18:e0287123. [PMID: 37307276 DOI: 10.1371/journal.pone.0287123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 05/31/2023] [Indexed: 06/14/2023] Open
Abstract
The effects of postural training on postural stability and vestibulospinal reflexes (VSRs) were investigated in normal subjects. A period (23 minutes) of repeated episodes (n = 10, 50 seconds) of unipedal stance elicited a progressive reduction of the area covered by centre of pressure (CoP) displacement, of average CoP displacement along the X and Y axes and of CoP velocity observed in this challenging postural task. All these changes were correlated to each other with the only exception of those in X and Y CoP displacement. Moreover, they were larger in the subjects showing higher initial instability in unipedal stance, suggesting that they were triggered by the modulation of sensory afferents signalling body sway. No changes in bipedal stance occurred soon and 1 hour after this period of postural training, while a reduction of CoP displacement was apparent after 24 hours, possibly due to a beneficial effect of overnight sleep on postural learning. The same period of postural training also reduced the CoP displacement elicited by electrical vestibular stimulation (EVS) along the X axis up to 24 hours following the training end. No significant changes in postural parameters of bipedal stance and VSRs could be observed in control experiments where subjects were tested at identical time points without performing the postural training. Therefore, postural training led to a stricter control of CoP displacement, possibly acting through the cerebellum by enhancing feedforward mechanisms of postural stability and by depressing the VSR, the most important reflex mechanism involved in balance maintenance under challenging conditions.
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Affiliation(s)
- Claudia Grasso
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Massimo Barresi
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | | | - Francesco Lazzerini
- Department of Surgical, Medical, Molecular Pathology and Critical Cares, University of Pisa, Pisa, Italy
| | - Luca Bruschini
- Department of Surgical, Medical, Molecular Pathology and Critical Cares, University of Pisa, Pisa, Italy
| | - Stefano Berrettini
- Department of Surgical, Medical, Molecular Pathology and Critical Cares, University of Pisa, Pisa, Italy
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Paolo Andre
- Department of Medicine, Surgery and Neuroscience, University of Siena, Siena, Italy
| | - Cristina Dolciotti
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Vincenzo De Cicco
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Davide De Cicco
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples "Federico II", Naples, Italy
| | - Paola d'Ascanio
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Paolo Orsini
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Francesco Montanari
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Ugo Faraguna
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy
| | - Diego Manzoni
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
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20
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Shamei A, Sóskuthy M, Stavness I, Gick B. Postural adaptation to microgravity underlies fine motor impairment in astronauts' speech. Sci Rep 2023; 13:8231. [PMID: 37217497 DOI: 10.1038/s41598-023-34854-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 05/09/2023] [Indexed: 05/24/2023] Open
Abstract
Understanding the role of anti-gravity behaviour in fine motor control is crucial to achieving a unified theory of motor control. We compare speech from astronauts before and immediately after microgravity exposure to evaluate the role of anti-gravity posture during fine motor skills. Here we show a generalized lowering of vowel space after space travel, which suggests a generalized postural shift of the articulators. Biomechanical modelling of gravitational effects on the vocal tract supports this analysis-the jaw and tongue are pulled down in 1g, but movement trajectories of the tongue are otherwise unaffected. These results demonstrate the role of anti-gravity posture in fine motor behaviour and provide a basis for the unification of motor control models across domains.
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Affiliation(s)
- Arian Shamei
- University of British Columbia, Vancouver, Canada.
| | | | | | - Bryan Gick
- University of British Columbia, Vancouver, Canada
- Haskins Laboratories, New Haven, CT, USA
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21
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Tao H, Zhao Y, Tao F, Xiang W, Cao H, Zhang Z. Effect of autogenous osteochondral mosaicplasty on the balance control of patients with cartilage defects of the knee: a pilot study. J Orthop Surg Res 2023; 18:336. [PMID: 37149624 PMCID: PMC10164316 DOI: 10.1186/s13018-023-03821-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 05/02/2023] [Indexed: 05/08/2023] Open
Abstract
BACKGROUND Autogenous osteochondral mosaicplasty (AOM) is a widely used optimal surgical technique for cartilage repair in young patients with focal articular cartilage defects. However, the alterations in balance control in these patients after AOM have not been sufficiently investigated. This study aimed to compare different balance control performances between the patients with knee cartilage defects and healthy controls before and after AOM, as well as evaluate the influence of AOM on balance control in these patients. METHODS Static posturographic tests were performed in twenty-four patients who were scheduled for AOM two weeks pre-, three months, and one year postoperatively, along with thirty matched controls, respectively. All participants underwent posturography under four standing conditions: eyes open and closed, without and with foam support to assess the balance control ability. Subsequently, patient-reported outcome measures (PROMs) were synchronously obtained and analyzed. RESULTS Compared to the control subjects, less efficient balance control was observed in study patients at three testing phases (p < 0.05), whereas no alterations in postural control were visible in these patients within a year following AOM (p > 0.05). Significant improvements were found in all PROMs such as the International Knee Documentation Committee, the Lysholm Knee Score, and the visual analogue scale in the study patients postoperatively (p < 0.01). CONCLUSION The results indicated that patients with knee cartilage defects have a prominent balance control deficit compared to healthy individuals. Furthermore, AOM does not improve balance control in these patients for at least one year postoperatively, and more effective approaches for postural regulation are required for the management of cartilage defect patients.
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Affiliation(s)
- Hai Tao
- Department of Orthopedics, Renmin Hospital of Wuhan University, 238, Jiefang Road, Wuchang District, Wuhan, 430060, Hubei, China
| | - Yingchun Zhao
- Department of Orthopedics, Renmin Hospital of Wuhan University, 238, Jiefang Road, Wuchang District, Wuhan, 430060, Hubei, China
| | - Fenghua Tao
- Department of Orthopedics, Renmin Hospital of Wuhan University, 238, Jiefang Road, Wuchang District, Wuhan, 430060, Hubei, China
| | - Wei Xiang
- Department of Orthopedics, Renmin Hospital of Wuhan University, 238, Jiefang Road, Wuchang District, Wuhan, 430060, Hubei, China
| | - Hui Cao
- Department of Orthopedics, Renmin Hospital of Wuhan University, 238, Jiefang Road, Wuchang District, Wuhan, 430060, Hubei, China
| | - Zheng Zhang
- Department of Orthopedics, Renmin Hospital of Wuhan University, 238, Jiefang Road, Wuchang District, Wuhan, 430060, Hubei, China.
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Borji R, Fendri T, Kasmi S, Haddar E, Laatar R, Sahli S, Rebai H. Dual-Task Training Effects on the Cognitive-Motor Interference in Individuals with Intellectual Disability. J Mot Behav 2023; 55:341-353. [PMID: 37076126 DOI: 10.1080/00222895.2023.2201183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/16/2023] [Accepted: 04/04/2023] [Indexed: 04/21/2023]
Abstract
This study explored the effect of dual task (DT) training compared to single task (ST) training on postural and cognitive performances in DT conditions in individuals with intellectual disability (ID). Postural sways and cognitive performances were measured separately and simultaneously before and after 8 weeks in the ST training group (STTG), the DT training group (DTTG) and the control group (CG) that did not received any training. Before training, postural sways and cognitive performances were higher in the DT condition compared to ST one in all groups. After training, postural sways were higher in the DT condition compared to the ST only in the STTG and the CG. The cognitive performance increased after training only in the DTTG.
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Affiliation(s)
- Rihab Borji
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Thoraya Fendri
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Sofien Kasmi
- Tunisian Research Laboratory 'Sports Performance Optimization (LR09SEP01), National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
| | - Emna Haddar
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Rabeb Laatar
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Sonia Sahli
- Research Laboratory: Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Haithem Rebai
- Tunisian Research Laboratory 'Sports Performance Optimization (LR09SEP01), National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
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Rapson R, Latour JM, Carter B, Pitsouni V, Marsden JF. A cross sectional study investigating dynamic balance when stepping to targets in children with cerebral palsy compared to typically developing children. Gait Posture 2023; 101:154-159. [PMID: 36842256 DOI: 10.1016/j.gaitpost.2023.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/28/2023]
Abstract
BACKGROUND Children with Cerebral Palsy (CP) have altered anticipatory postural adjustments (APAs) during gait initiation. These APAs may affect dynamic balance in tasks such as stepping. RESEARCH QUESTIONS How are APAs in children with CP affected during stepping to precise targets? How do children with CP modulate APAs when stepping to medial and lateral targets? What is the association between APAs and symptom severity, movement quality and impairment profile? METHOD Children undertook a stepping task to laterally and medially placed targets with either leg, in a randomised order. Movement of the centre of pressure (COP) and markers at the pelvis and foot were measured via a force plate and 3D motion analysis. Motion of the centre of mass (COM) was estimated via pelvic markers. APAs were assessed prior to leading leg lift-off in medio-lateral and antero-posterior directions. Stepping error was calculated. Baseline characteristics of children with CP included Gross Motor Function Measure (GMFM), Quality Function Measure (QFM), leg muscle hypertonia (Tardieu test) and strength (manual dynamometry). RESULTS Sixteen ambulant children with CP (12.2 years ± 2.2) and 14 typically developing (TD) children (11.6 years ± 2.9) were assessed. In children with CP, APAs in the medio-lateral direction were 20-30% smaller. Children with CP were less able to modulate their APAs with steps to medial and laterally placed targets, than TD children. Medio-lateral COP motion was associated with movement quality assessed by QFM subsections, GMFM (correlation coefficient r = 0.66-0.80) and hip abductor strength (r = 0.75). Antero-posterior APAs were significantly smaller when stepping with the non-paretic leg in children with CP. APA size was positively related to the length of the contralateral, paretic gastrocnemius (r = 0.77). Stepping error was higher in children with CP and inversely correlated to the size of the medio-lateral APA. DISCUSSION Children with CP show smaller medio-lateral APAs especially when stepping to medially placed targets. APA size may be limited by proximal muscle strength and gastrocnemius length.
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Affiliation(s)
- Rachel Rapson
- School of Health Professions, Faculty of Health, University of Plymouth PL6 8BH, UK; Children and Family Health Devon, Torbay and South Devon NHS Foundation Trust, Devon TQ1 7AA, UK.
| | - Jos M Latour
- School of Nursing and Midwifery, Faculty of Health, University of Plymouth, PL6 8BH, UK
| | - Bernie Carter
- Edge Hill University, St Helens Rd, Ormskirk L39 4QP, UK
| | - Vasiliki Pitsouni
- School of Health Professions, Faculty of Health, University of Plymouth PL6 8BH, UK
| | - Jonathan F Marsden
- School of Health Professions, Faculty of Health, University of Plymouth PL6 8BH, UK
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Lahiani M, Ben Waer F, Bouchaala F, Laatar R, Rebai H, Sahli S. Time-of-Day Effect on Postural Balance and Its Associations with Menopausal Symptoms in Postmenopausal Women. Percept Mot Skills 2023; 130:5-26. [PMID: 36240107 DOI: 10.1177/00315125221133599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Postmenopausal women suffer from postural balance issues. During a 24-hour time span, postural performance undergoes radical changes as influenced by the circadian rhythm. In this study, we aimed to investigate time-of-day effects on postural balance in postmenopausal women and balance relationships with menopausal symptoms. Two groups of women, aged 40-50 years, participated in this study: a menopausal group and a control group. We evaluated their postural balance and menopausal symptoms (mood, sleepiness and fatigue) in five sessions over the course of a day: at 06:00 hours, at 10:00, at 14:00, at 18:00 and at 22:00. The results showed that postural balance (center of pressure area (CoParea)) values of postmenopausal women were significantly worse (p < .05) at 22:00. Moreover, at this time-of-day, participants in the menopausal group were more tired, less vigilant and experienced a lower mood. We found negative correlations between postural balance and both mood and fatigue levels. However, there was no time-of-day effect on postural balance, mood, fatigue, and sleepiness among participants in the control group. Thus, time-of-day should be considered a factor to control when assessing postural balance and designing intervention studies for postmenopausal women; and it is important for these women to be cautious of fall risks at night, as they are then less stable than at other times-of-day.
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25
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Lafitte R, Jeager M, Piscicelli C, Dai S, Lemaire C, Chrispin A, Davoine P, Dupierrix E, Pérennou D. Spatial neglect encompasses impaired verticality representation after right hemisphere stroke. Ann N Y Acad Sci 2023; 1520:140-152. [PMID: 36478572 DOI: 10.1111/nyas.14938] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Spatial neglect after right hemisphere stroke (RHS) was recently found to encompass lateropulsion, a deficit in body orientation with respect to gravity caused by altered brain processing of graviception. By analogy, we hypothesized that spatial neglect after RHS might encompass an altered representation of verticality. We also assumed a strong relation between body neglect and impaired postural vertical, both referring to the body. To tackle these issues, we performed contingency and correlation analyses between two domains of spatial neglect (body, extra-body) and two modalities of verticality perception (postural, visual) in 77 individuals (median age = 67) with a first-ever subacute RHS (1-3 months). All individuals with a transmodal (postural and visual) tilt in verticality perception (n = 26) had spatial neglect, but the reverse was not found. Correlation and multivariate analyses revealed that spatial neglect (and notably body neglect) was associated more with postural than visual vertical tilts. These findings indicate that after RHS, an impaired verticality representation results from a kind of graviceptive neglect, bearing first on somaesthetic graviception and second on vestibular graviception. They also suggest that the human brain uses not only a mosaic of 2D representations but also 3D maps involving a transmodal representation of verticality.
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Affiliation(s)
- Rémi Lafitte
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Marie Jeager
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Céline Piscicelli
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Shenhao Dai
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Camille Lemaire
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Anne Chrispin
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Patrice Davoine
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Eve Dupierrix
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
| | - Dominic Pérennou
- Department of Neurorehabilitation, Univ. Grenoble Alpes, UMR CNRS 5105 Neuropsychology and Neurocognition, CHU Grenoble Alpes, South Hospital, Grenoble, France
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Maatoug H, Baccouch R, Borji R, Rebai H, Sahli S. Effects of Music Listening on Postural Balance in Adolescents with Visual Impairment. Percept Mot Skills 2023; 130:112-126. [PMID: 36191088 DOI: 10.1177/00315125221130548] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We aimed to investigate the effect of music on visually impaired adolescents' postural balance across different somatosensory and vestibular input conditions. We recruited 19 adolescent participants (9 males, 10 females) with severe congenital visual impairment. We recorded their mean center of pressure velocity (CoPVm) during static upright bipedal standing under somatosensory (firm and foam surfaces) and vestibular (head facing forward (HFF), head rotated 90° to the right (HRR), and head rotated 90° to the left (HRL)) perturbations in three auditory conditions (no-music, listening to Jupiter, and listening to their preferred music). We found that CoPVm decreased significantly when listening to both Jupiter and preferred music, compared to the no-music condition on both firm (p < .05) and foam (p < .001) surfaces and with the HFF (p < .05), rotated to the right (p < .001) or rotated to the left (p < .001). Moreover, CoPVm values increased significantly with somatosensory manipulation (p < .001) in all the auditory conditions and with vestibular manipulation (p < .01) only in the no-music condition. We concluded that listening to both Jupiter and preferred music improved postural balance in visually impaired adolescents, even in challenged postural conditions.
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Affiliation(s)
- Hana Maatoug
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Rym Baccouch
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Rihab Borji
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Haithem Rebai
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
| | - Sonia Sahli
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), 479822High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
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Maulet T, Bonnyaud C, Weill C, Laforêt P, Cattagni T. Motor Function Characteristics of Adults With Late-Onset Pompe Disease: A Systematic Scoping Review. Neurology 2023; 100:e72-e83. [PMID: 36302669 DOI: 10.1212/wnl.0000000000201333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 08/16/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Pompe disease is a rare neuromuscular disease caused by a deficiency of the lysosomal enzyme acid α-glucosidase. The late-onset Pompe disease (LOPD) in adults is characterized by weakness of ventilatory, axial, and proximal extremity muscles. These muscle impairments progressively impair various motor functions such as locomotion and postural control. Nearly 87% of adults with LOPD (aLOPD) report walking problems, and more than 80% report instability and falls. Knowledge of these motor functions is now sufficient to provide a clear and comprehensive overview of motor function in aLOPD. Therefore, this scoping review aimed to summarize current knowledge about motor function in aLOPD. It specifically targeted neuromuscular performance, locomotion, and postural control. METHODS A systematic search in MEDLINE (through PubMed), EMBASE, and Cochrane databases was conducted until May 2021. We included studies providing primary data on at least 4 participants, exploring neuromuscular performance, locomotion, and/or postural control in aLOPD. Risk of bias analysis was assessed using tools appropriate to the study designs; the risk of bias 2 (Cochrane tool) for randomized controlled trials, risk of bias in Nonrandomized Studies - of Interventions (Cochrane tool) for nonrandomized interventional trials, and the Newcastle-Ottawa Scale for cohort studies and case-control studies. RESULTS The search identified 2,885 articles. After screening, 58 articles were included in the analysis. In these studies, 88% explored locomotion, 83% neuromuscular performance, and 3% postural control. This review showed that aLOPD experience symmetrical weakness, concerning especially the hip and lumbar muscles. Locomotor activities are limited with a distance reduction, spatiotemporal gait parameter modification, and an increased pelvic drop and tilt. Balance disorders are also observed especially in the anteroposterior direction. DISCUSSION We performed the first review on motor function characteristics in aLOPD. Although a significant amount of knowledge was synthesized in this review, our study also highlighted the lack of current research on this topic. Maximal muscle strength was the only neuromuscular performance studied, and gait biomechanics and postural control were poorly explored in LOPD. Relationships between the degree of muscle weakness and motor function alterations also remain to be determined in aLOPD.
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Affiliation(s)
- Théo Maulet
- From the Physiology and Functional Exploration Department (T.M., C.B.), Raymond Poincaré Hospital, APHP, Garches, France; End: Icap Laboratory (T.M., P.L.), Inserm Unit 1179, UVSQ, France; Paris-Saclay University (T.M., C.B.), UVSQ, Research Unit ERPHAN, Versailles, France; Paris Cité University (C.W.), DGDBM, France; Neurology Department (P.L.), Nord/Est/Ile de France Neuromuscular Center, Raymond-Poincaré Hospital, Garches; and Nantes University (T.C.), Movement-Interactions-Performance, MIP, Nantes, France.
| | - Celine Bonnyaud
- From the Physiology and Functional Exploration Department (T.M., C.B.), Raymond Poincaré Hospital, APHP, Garches, France; End: Icap Laboratory (T.M., P.L.), Inserm Unit 1179, UVSQ, France; Paris-Saclay University (T.M., C.B.), UVSQ, Research Unit ERPHAN, Versailles, France; Paris Cité University (C.W.), DGDBM, France; Neurology Department (P.L.), Nord/Est/Ile de France Neuromuscular Center, Raymond-Poincaré Hospital, Garches; and Nantes University (T.C.), Movement-Interactions-Performance, MIP, Nantes, France
| | - Catherine Weill
- From the Physiology and Functional Exploration Department (T.M., C.B.), Raymond Poincaré Hospital, APHP, Garches, France; End: Icap Laboratory (T.M., P.L.), Inserm Unit 1179, UVSQ, France; Paris-Saclay University (T.M., C.B.), UVSQ, Research Unit ERPHAN, Versailles, France; Paris Cité University (C.W.), DGDBM, France; Neurology Department (P.L.), Nord/Est/Ile de France Neuromuscular Center, Raymond-Poincaré Hospital, Garches; and Nantes University (T.C.), Movement-Interactions-Performance, MIP, Nantes, France
| | - Pascal Laforêt
- From the Physiology and Functional Exploration Department (T.M., C.B.), Raymond Poincaré Hospital, APHP, Garches, France; End: Icap Laboratory (T.M., P.L.), Inserm Unit 1179, UVSQ, France; Paris-Saclay University (T.M., C.B.), UVSQ, Research Unit ERPHAN, Versailles, France; Paris Cité University (C.W.), DGDBM, France; Neurology Department (P.L.), Nord/Est/Ile de France Neuromuscular Center, Raymond-Poincaré Hospital, Garches; and Nantes University (T.C.), Movement-Interactions-Performance, MIP, Nantes, France
| | - Thomas Cattagni
- From the Physiology and Functional Exploration Department (T.M., C.B.), Raymond Poincaré Hospital, APHP, Garches, France; End: Icap Laboratory (T.M., P.L.), Inserm Unit 1179, UVSQ, France; Paris-Saclay University (T.M., C.B.), UVSQ, Research Unit ERPHAN, Versailles, France; Paris Cité University (C.W.), DGDBM, France; Neurology Department (P.L.), Nord/Est/Ile de France Neuromuscular Center, Raymond-Poincaré Hospital, Garches; and Nantes University (T.C.), Movement-Interactions-Performance, MIP, Nantes, France
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Paillard T. Detrimental effects of sleep deprivation on the regulatory mechanisms of postural balance: a comprehensive review. Front Hum Neurosci 2023; 14:1146550. [PMID: 37124366 PMCID: PMC10133494 DOI: 10.3389/fnhum.2023.1146550] [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: 01/17/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
This review addresses the effects of sleep deprivation on postural balance based on a comprehensive search of articles dealing with this relationship in the electronic databases PubMed, Google Scholar, and ScienceDirect. Evidence suggests that postural balance is sensitive to acute and chronic sleep deprivation for everyone, including young and healthy subjects. Pathologies, aging and the circadian pattern aggravate and/or accentuate the effects of sleep deprivation on postural balance. It turns out that the different systems of information taking, decision making, and motor execution of the postural balance function are negatively affected by sleep deprivation. For example, regarding the information taking system, the sensitivity of visual perception and visuo-spatial performance and the oculomotricity are disrupted and the vestibulo-ocular reflex and the sensory reweighting are altered. Regarding the decision making system, the different brain areas activated for the regulation of postural balance are less active after sleep deprivation and the executive function and perception of verticality are impaired. Regarding the motor execution system, the agonist-antagonist muscle coordination can be modified. However, the different detrimental effects induced for each system of the postural balance function are not yet fully known and deserve further exploration in order to better understand them.
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Osmanski-Zenk K, Ningel A, Tischer T, Mittelmeier W. Vergleichende Untersuchung der posturalen Kontrolle bei 20–40-Jährigen und Karate-Kaderathleten mittels eines neuromuskulären Trainingsgerätes. SPORTVERLETZUNG · SPORTSCHADEN 2022; 36:200-207. [DOI: 10.1055/a-1912-4777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Zusammenfassung
Hintergrund Die posturale Kontrolle dient dem Erhalt der aufrechten Körperhaltung und trägt zur Gleichgewichtsregulation bei. Die im höheren Alter zunehmenden neuromuskulären Defizite führen zu einer Verschlechterung der posturalen Kontrolle, die durch neuromuskuläres Training verbessert werden kann. In der Annahme, dass neuromuskuläre Defizite bereits früh auftreten, wurden die posturalen Fähigkeiten von 20–40-Jährigen untersucht. Zudem wurde der Einfluss von Leistungssport auf die posturale Kontrolle durch die Untersuchung von Karate-Kaderathleten geprüft.
Methodik Für einen Altersvergleich wurden 123 altershomogene Gesunde zwischen 20 und 40 Jahren untersucht. 24 Karate-Kaderathleten wurden mit den 20–25-jährigen Gesunden der „Normalbevölkerung“ verglichen. Zur Datenerhebung wurde ein neuromuskuläres Trainingsgerät, der Human Body Equilibrium 360 (Huber 360), verwendet.
Ergebnisse Im Altersvergleich zeigten sich für alle 7 Messungen keine signifikanten Unterschiede. Die Probanden waren zu jung, um Defizite zu erkennen. Jedoch zeigten sich einige allgemeine Erkenntnisse. Im beidbeinigen Stand war bei allen Gruppen eine signifikante Zunahme der Körperschwerpunkt (KSP) -Schwankungen nach Augenschluss zu sehen. Der Einfluss der Füßigkeit bzw. Händigkeit zeigte sich im Einbeinstand und Krafttest. Geschlechtsspezifische Unterschiede waren zu verzeichnen. Bei der Untersuchung der Karate-Kaderathleten zeigten sich verschiedene trainingsspezifische Anpassungen. So konnten Karatesportler den Wegfall der visuellen Information besser kompensieren. Karatesportler wiesen außerdem ein signifikant breiteres Gangbild und ein größeres Stabilitätsareal auf. Sportler konnten ihren KSP weiter verlagern, ohne aus dem Gleichgewicht zu geraten.
Diskussion Der Huber 360 ist als Rehabilitations- und Trainingsgerät aufgrund der geringen Trennschärfe der Tests in seinem gesamten Anwendungsspektrum nur bedingt geeignet, da signifikante Unterschiede zwischen den Gruppen schwer zu detektieren sind. Einzelne trainingsspezifische Anpassungen durch leistungsorientiertes Karatetraining sind erkennbar und unterstreichen den Einfluss des Trainings auf die posturale Kontrolle. Zusammenfassend lässt sich sagen, dass die Anwendung des Huber 360 zur Beurteilung von posturalen Fähigkeiten im Altersvergleich und bei Unterscheidung trainingsspezifischer Anpassungen einen differenzierten und selektiveren Einsatz der einzelnen Tests bedarf. Weitere Untersuchungen mit älteren Patienten mit unterschiedlichen Erkrankungen sind geplant.
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Affiliation(s)
- Katrin Osmanski-Zenk
- Orthopädische Klinik und Poliklinik, Universitätsmedizin Rostock, Rostock, GERMANY
| | - Amelie Ningel
- Orthopädische Klinik und Poliklinik, Universitätsmedizin Rostock, Rostock, GERMANY
| | - Thomas Tischer
- Universitätsmedizin Rostock Orthopädische Klinik und Poliklinik: Universitatsmedizin Rostock Orthopadische Klinik und Poliklinik, Rostock, GERMANY
| | - Wolfram Mittelmeier
- Universitätsmedizin Rostock Orthopädische Klinik und Poliklinik: Universitatsmedizin Rostock Orthopadische Klinik und Poliklinik, Rostock, GERMANY
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30
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Villaseñor-Moreno JC, Aranda-Moreno C, Figueroa-Padilla I, Giraldez-Fernández ME, Gresty MA, Jáuregui-Renaud K. Individual Cofactors and Multisensory Contributions to the Postural Sway of Adults with Diabetes. Brain Sci 2022; 12:1489. [PMID: 36358415 PMCID: PMC9688443 DOI: 10.3390/brainsci12111489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 10/20/2023] Open
Abstract
To assess the interactions between individual cofactors and multisensory inputs on the postural sway of adults with type 2 diabetes and healthy subjects, 69 adults accepted to participate in the study (48 with/ 21 without diabetes). Assessments included neuro-otology (sinusoidal-rotation and unilateral-centrifugation), ophthalmology and physiatry evaluations, body mass index (BMI), physical activity, quadriceps strength, the ankle/brachial index and polypharmacy. Postural sway was recorded on hard/soft surface, either with eyes open/closed, or without/with 30° neck extension. The proportional differences from the baseline of each condition were analyzed using Multivariate and Multivariable analyses. Patients with polyneuropathy and no retinopathy showed visual dependence, while those with polyneuropathy and retinopathy showed adaptation. Across sensory challenges, the vestibulo-ocular gain at 1.28 Hz and the BMI were mainly related to changes in sway area, while the dynamic visual vertical was mainly related to changes in sway length. The ankle/brachial index was related to the effect of neck extension, with contributions from quadriceps strength/physical activity, polyneuropathy and polypharmacy. Across conditions, men showed less sway than women did. In conclusion, in adults with diabetes, sensory inputs and individual cofactors differently contribute to postural stability according to context. Rehabilitation programs for adults with diabetes may require an individualized approach.
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Affiliation(s)
- Julio César Villaseñor-Moreno
- Unidad de Investigación Médica en Otoneurología, Instituto Mexicano del Seguro Social, Ciudad de Mexico 06720, Mexico
| | - Catalina Aranda-Moreno
- Unidad de Investigación Médica en Otoneurología, Instituto Mexicano del Seguro Social, Ciudad de Mexico 06720, Mexico
| | | | | | - Michael A. Gresty
- Neuro-otology Unit, Imperial College London, Charing Cross Hospital, London W6 8RF, UK
| | - Kathrine Jáuregui-Renaud
- Unidad de Investigación Médica en Otoneurología, Instituto Mexicano del Seguro Social, Ciudad de Mexico 06720, Mexico
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Purohit R, Bhatt T. Mobile Brain Imaging to Examine Task-Related Cortical Correlates of Reactive Balance: A Systematic Review. Brain Sci 2022; 12:1487. [PMID: 36358413 PMCID: PMC9688648 DOI: 10.3390/brainsci12111487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/23/2022] [Accepted: 10/25/2022] [Indexed: 02/18/2024] Open
Abstract
This systematic review examined available findings on spatial and temporal characteristics of cortical activity in response to unpredicted mechanical perturbations. Secondly, this review investigated associations between cortical activity and behavioral/biomechanical measures. Databases were searched from 1980-2021 and a total of 35 cross-sectional studies (31 EEG and 4 fNIRS) were included. Majority of EEG studies assessed perturbation-evoked potentials (PEPs), whereas other studies assessed changes in cortical frequencies. Further, fNIRS studies assessed hemodynamic changes. The PEP-N1, commonly identified at sensorimotor areas, was most examined and was influenced by context prediction, perturbation magnitude, motor adaptation and age. Other PEPs were identified at frontal, parietal and sensorimotor areas and were influenced by task position. Further, changes in cortical frequencies were observed at prefrontal, sensorimotor and parietal areas and were influenced by task difficulty. Lastly, hemodynamic changes were observed at prefrontal and frontal areas and were influenced by task prediction. Limited studies reported associations between cortical and behavioral outcomes. This review provided evidence regarding the involvement of cerebral cortex for sensory processing of unpredicted perturbations, error-detection of expected versus actual postural state, and planning and execution of compensatory stepping responses. There is still limited evidence examining cortical activity during reactive balance tasks in populations with high fall-risk.
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Affiliation(s)
- Rudri Purohit
- Department of Physical Therapy, University of Illinois at Chicago, Chicago, IL 60612, USA
- Ph.D. Program in Rehabilitation Sciences, College of Applied Health Sciences, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Tanvi Bhatt
- Department of Physical Therapy, University of Illinois at Chicago, Chicago, IL 60612, USA
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Peultier-Celli L, Jaussaud R, Kaminsky P, Deibener-Kaminsky J, Feillet F, Perrin P. Balance control impairments in Fabry disease. Front Neurol 2022; 13:856946. [PMID: 36247762 PMCID: PMC9564708 DOI: 10.3389/fneur.2022.856946] [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: 01/17/2022] [Accepted: 06/29/2022] [Indexed: 12/04/2022] Open
Abstract
Background Fabry disease (FD) is a rare inherited lysosomal storage disorder caused by the deficiency of the enzyme alpha-galactosidase A. This deficiency leads to an accumulation of glycosphingolipids leading to progressive and multisystemic disease, including renal, cardiac, and neurological damages. FD may also have neuro-otological and visual impairments, which can generate postural control alterations, inner ear, and vision being involved in this function. This study aimed to evaluate the impact of FD on postural control. Methods In total, fourteen adult patients (8 men/6 women, mean age = 37.6 ± 11.4 years) and two children (mean age = 11 years) with FD and 19 healthy adults (12 men/7 women, mean age = 36.5 ± 16.9 years) and two healthy children (mean age = 10.5 years) took part in this study. Postural control was evaluated by a sensory organization test combining three visual situations (eyes open, eyes closed, and sway referenced visual surround motion) with two platform situations (stable platform and sway referenced platform motion), aiming to calculate a composite equilibrium score (CES), a high score being representative of good postural control. Somatosensory (RSOM), visual (RVIS), and vestibular (RVEST) contributions to postural control were calculated, a low score reflecting a poor use of the indicated sensory input. Results The CES was lower in adult patients with FD compared with the healthy subjects (p < 0.001). RVIS (p = 0.001) and RVEST (p = 0.003) were lower in patients with FD compared with the control group, whereas no difference in RSOM was observed. Conclusion Inner ear and visual pathologies associated with the central nervous system impairments are factors of postural control impairments. Physical activities, which can also be rehabilitative, by maintaining or increasing the weight of proprioception, may help diminish dependency on altered sensorial inputs.
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Affiliation(s)
- Laetitia Peultier-Celli
- EA 3450 DevAH - Development, Adaptation and Handicap, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Laboratory for the Analysis of Posture, Equilibrium and Motor Function (LAPEM), University Hospital of Nancy, Vandoeuvre-lès-Nancy, France
| | - Roland Jaussaud
- EA 3450 DevAH - Development, Adaptation and Handicap, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Department of Internal Medicine and Clinical Immunology, Vandoeuvre-lès-Nancy, France
| | - Pierre Kaminsky
- EA 3450 DevAH - Development, Adaptation and Handicap, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Department of Internal Medicine and Clinical Immunology, Vandoeuvre-lès-Nancy, France
| | | | - François Feillet
- Reference Centre for Inborn Errors of Metabolism, Children Hospital, University Hospital of Nancy, Vandoeuvre-lès-Nancy, France
| | - Philippe Perrin
- EA 3450 DevAH - Development, Adaptation and Handicap, Faculty of Medicine, University of Lorraine, Vandoeuvre-lès-Nancy, France
- Laboratory for the Analysis of Posture, Equilibrium and Motor Function (LAPEM), University Hospital of Nancy, Vandoeuvre-lès-Nancy, France
- Department of Pediatric Oto-Rhino-Laryngology, University Hospital of Nancy, Vandoeuvre-lès-Nancy, France
- *Correspondence: Philippe Perrin
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Tisserand R, Rasman BG, Omerovic N, Peters RM, Forbes PA, Blouin JS. Unperceived motor actions of the balance system interfere with the causal attribution of self-motion. PNAS NEXUS 2022; 1:pgac174. [PMID: 36714829 PMCID: PMC9802180 DOI: 10.1093/pnasnexus/pgac174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 08/25/2022] [Indexed: 02/01/2023]
Abstract
The instability of human bipedalism demands that the brain accurately senses balancing self-motion and determines whether movements originate from self-generated actions or external disturbances. Here, we challenge the longstanding notion that this process relies on a single representation of the body and world to accurately perceive postural orientation and organize motor responses to control balance self-motion. Instead, we find that the conscious sense of balance can be distorted by the corrective control of upright standing. Using psychophysics, we quantified thresholds to imposed perturbations and balance responses evoking cues of self-motion that are (in)distinguishable from corrective balance actions. When standing immobile, participants clearly perceived imposed perturbations. Conversely, when freely balancing, participants often misattributed their own corrective responses as imposed motion because their balance system had detected, integrated, and responded to the perturbation in the absence of conscious perception. Importantly, this only occurred for perturbations encoded ambiguously with balance-correcting responses and that remained below the natural variability of ongoing balancing oscillations. These findings reveal that our balance system operates on its own sensorimotor principles that can interfere with causal attribution of our actions, and that our conscious sense of balance depends critically on the source and statistics of induced and self-generated motion cues.
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Affiliation(s)
- Romain Tisserand
- School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada,Institut PPRIME (UPR3346), Université de Poitiers ENSMA, CNRS, 86360 Chasseneuil-du-Poitou, France,Centre de Recherches sur la Cognition et l'Apprentissage (UMR 7295), Université de Poitiers, Université de Tours, CNRS, 86073 Poitiers, France
| | - Brandon G Rasman
- Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam 3015 GD, The Netherlands,School of Physical Education, Sport, and Exercise Sciences, University of Otago, Dunedin 9054, New Zealand
| | - Nina Omerovic
- Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam 3015 GD, The Netherlands
| | - Ryan M Peters
- School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada,Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
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Standing Posture in Motor and Cognitive Dual-Tasks during Smartphone Use: Linear and Nonlinear Analysis of Postural Control. Eur J Investig Health Psychol Educ 2022; 12:1021-1033. [PMID: 36005222 PMCID: PMC9407520 DOI: 10.3390/ejihpe12080073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/06/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022] Open
Abstract
Analysis of the center of pressure (CoP) during cognitive or motor dual-tasking is widely used to characterize postural control. Most studies use traditional measures of CoP to quantify postural control, but given its complexity, nonlinear analysis of CoP is of growing interest in the area. This study aims to analyze CoP behavior in healthy young adults during standing posture performance while simultaneously performing motor or cognitive tasks on a smartphone, using linear and nonlinear analysis of CoP. Thirty-six healthy participants (23.08 ± 3.92 years) were found eligible for this study. They performed a single task (ST), cognitive dual-task (cog-DT), and motor dual-task (mot-DT). The total excursion of CoP, displacement of CoP in the anterior-posterior and medial-lateral directions, mean total velocity of CoP, and mean anterior-posterior and medial-lateral velocities of CoP were measured with a force plate. Approximate entropy (ApEn) of the anterior-posterior (ApEn-AP) and medial-lateral (ApEn-ML) displacement of CoP were also calculated. The results showed that dual-task costs for the total excursion, displacement in the anterior-posterior direction, mean total velocity, and mean anterior-posterior velocity of CoP were greater during the cog-DT than the mot-DT (p < 0.05). In the nonlinear analysis of the CoP, there was no difference (p > 0.05) between the cog-DT and mot-DT for ApEn values of the anterior-posterior and medial-lateral time series of the CoP. Both linear and nonlinear analyses showed differences between the cog-DT and ST (p < 0.05), revealing a decline in postural control during the cog-DT compared with the ST. In conclusion, performing a cog-DT causes sway impairments and lower postural control efficacy compared with motor single and dual-tasks. Furthermore, both linear and nonlinear analyses were able to distinguish between conditions.
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Postural Sway and Muscle Activity Dynamics of Upright Standing on Sloped Surfaces. Motor Control 2022; 26:591-607. [PMID: 35894905 DOI: 10.1123/mc.2022-0005] [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: 01/13/2022] [Revised: 05/06/2022] [Accepted: 06/01/2022] [Indexed: 11/18/2022]
Abstract
During upright standing, individuals often use co-contraction muscle activity at the ankle joint when encountering increased postural difficulty; however, this strategy has been shown to be maladaptive. The purpose of the current investigation was to examine the effect of sloped standing on postural sway and muscle co-contraction at the ankle joint as a function of postural difficulty. Twelve young (21.67 ± 1.11 years) adults performed upright standing on flat, declined, and inclined support surfaces. Center of pressure displacements indexed postural sway while electromyography data were collected for the tibialis anterior and gastrocnemius medialis muscles. A co-contraction index and a nonlinear coupling metric (cross-approximate entropy) were computed between ankle dorsiflexor and plantar flexor muscles (tibialis anterior/gastrocnemius medialis) activity. The results showed that higher degrees of postural difficulty led to increased amounts of sway as well as increased sway regularity. Lower co-contraction index was observed for higher degrees of postural difficulty; however, increased dynamic coupling occurred with deviations from the flat standing condition. Overall, increased postural difficulty as manipulated by sloped standing (in either inclined or declined conditions) resulted in individuals adopting a more regular sway trajectory that may be due, in part, to a stronger dynamic coupling strategy occurring at the neuromuscular level.
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Nonlinear and Linear Measures in the Differentiation of Postural Control in Patients after Total Hip or Knee Replacement and Healthy Controls. Diagnostics (Basel) 2022; 12:diagnostics12071595. [PMID: 35885501 PMCID: PMC9318992 DOI: 10.3390/diagnostics12071595] [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: 05/31/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 11/17/2022] Open
Abstract
Primary osteoarthritis treatments such as a total hip (THR) or knee (TKR) replacement lead to postural control changes reinforced by age. Balance tests such as standing with eyes open (EO) or closed (EC) give a possibility to calculate both linear and nonlinear indicators. This study aimed to find the group of linear and/or nonlinear measures that can differentiate healthy people and patients with TKR or THR from each other. This study enrolled 49 THR patients, 53 TKR patients, and 16 healthy controls. The center of pressure (CoP) path length, sample entropy (SampEn), fractal dimension (FD), and the largest Lyapunov exponent (LyE) were calculated separately for AP and ML directions from standing with EO/EC. Cluster analysis did not result in correct allocation to the groups according to all variables. The discriminant model included LyE (ML-EO, ML-EC, AP-EC), FD (AP-EO, ML-EC, AP-EC), CoP-path AP-EC, and SampEn AP-EC. Regression analysis showed that all nonlinear variables depend on the group. The CoP path length is different only in THR patients. It was concluded that standing with EC is a better way to assess the amount of regularity of CoP movement and attention paid to maintain balance. Nonlinear measures better differentiate TKR and THR patients from healthy controls.
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Choi A, Park E, Kim TH, Im GJ, Mun JH. A novel optimization-based convolution neural network to estimate the contribution of sensory inputs to postural stability during quiet standing. IEEE J Biomed Health Inform 2022; 26:4414-4425. [PMID: 35759603 DOI: 10.1109/jbhi.2022.3186436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Adequate postural control is maintained by integrating signals from the visual, somatosensory, and vestibular systems. The purpose of this study is to propose a novel convolutional neural network (CNN)-based protocol that can evaluate the contributions of each sensory input for postural stability (calculated a sensory analysis index) using center of pressure (COP) signals in a quiet standing posture. Raw COP signals in the anterior/posterior and medial/lateral directions were extracted from 330 patients in a quiet standing with their eyes open for 20 seconds. The COP signals augmented using jittering and pooling techniques were transformed into the frequency domain. The sensory analysis indices were used as the output information from the deep learning models. A ResNet-50 CNN was combined with the k-nearest neighbor, random forest, and support vector machine classifiers for the training model. Additionally, a novel optimization process was proposed to include an encoding design variable that can group outputs into sub-classes along with hyperparameters. The results of optimization considering only hyperparameters showed low performance, with an accuracy of 55% or less and F-1 scores of 54% or less in all models. However, when optimization was performed using the encoding design variable, the performance was markedly increased in the CNN-classifier combined models (r = 0.975). These results suggest it is possible to evaluate the contribution of sensory inputs for postural stability using COP signals during a quiet standing. This study will facilitate the expanded dissemination of a system that can quantitatively evaluate the balance ability and rehabilitation progress of patients with dizziness.
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The Walls Are Closing In: Postural Responses to a Virtual Reality Claustrophobic Simulation. CLINICAL AND TRANSLATIONAL NEUROSCIENCE 2022. [DOI: 10.3390/ctn6020015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Changes in the visual environment and thereby, the spatial orientation, can induce postural instability leading to falls. Virtual reality (VR) has been used to expose individuals to virtual environments (VE) that increase postural threats. Claustrophobia is an anxiety disorder categorized under situational phobias and can induce such postural threats in a VE. Purpose: The purpose of the study was to investigate if VR-generated claustrophobic simulation has any impact on postural threats that might lead to postural instability. Methods: Thirty healthy men and women (age: 20.7 ± 1.2 years; height: 166.5 ± 7.3 cm; mass: 71.7 ± 16.2 kg) were tested for postural stability while standing on a force platform, upon exposure to five different testing trials, including a normal stance (NoVR), in stationary VE (VR), and three consecutive, randomly initiated, unexpected claustrophobia trials (VR CP1, VR CP2, VR CP3). The claustrophobia trials involved all four walls closing in towards the center of the room. Center of pressure (COP)-derived postural sway variables were analyzed with a one-way repeated measures analysis of variance at an alpha level of 0.05. Results: Significant main effect differences existed in all but one dependent COP-derived postural sway variables, at p < 0.05. Post-hoc pairwise comparisons with a Bonferroni correction revealed that, predominantly, postural sway excursions were significantly lower in claustrophobia trials compared to NoVR and VR, but only accomplished with significantly increased sway velocity. Conclusion: The VR CP trials induced lower postural sway magnitude, but with increased velocity, suggesting a bracing and co-contraction strategy when exposed to virtual claustrophobic postural threats. Additionally, postural sway decreased with subsequent claustrophobia trials, suggesting potential motor learning effects. Findings from the study offer insights to postural control behavior under virtual claustrophobic simulations and can aid in VR exposure therapy for claustrophobia.
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Reed CA, DuBois CK, Hutchison KA, Huppert TJ, Monfort SM. Influence of serial subtraction tasks on transient characteristics of postural control. Hum Mov Sci 2022; 83:102950. [PMID: 35397288 DOI: 10.1016/j.humov.2022.102950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 03/15/2022] [Accepted: 03/28/2022] [Indexed: 11/17/2022]
Abstract
We sought to better understand the influence of cognitive perturbations on transient aspects of postural control. Twenty healthy, younger adults had their postural control assessed during eyes open quiet stance. Participants completed three different conditions that either had no cognitive perturbation present, an easy cognitive perturbation (i.e., serial subtraction by ones), or a more difficult cognitive perturbation (i.e., serial subtraction by sevens). All trials finished with 60 s of undisturbed eyes open quiet stance, which was the focus of the balance assessment. 95% confidence ellipse area (EA) was calculated for 5-s epochs throughout the trial. The difference in EA from the first epoch after participants started (onset) or stopped (offset) the cognitive task to the last epoch of the trial (i.e., 55-60 s after perturbation) was used to characterize transient postural control behavior. Functional near-infrared spectroscopy was also used to quantify changes in prefrontal cortex activation during the counting tasks to support interpretation of the transient balance findings. There was a significant effect of condition for transient balance characteristics following a cognitive perturbation (P < 0.001), with greater transient increases in postural sway for both difficult (Cohen's d = 0.40, P < 0.001) and easier (Cohen's d = 0.29, P = 0.013) cognitive perturbations relative to no cognitive perturbation. The onset of cognitive tasks was also associated with greater transient increases in postural sway than the offset of the cognitive tasks (Cohen's d = 0.24, P = 0.019). The functional near-infrared spectroscopy data indicated that a significant decrease in deoxygenated hemoglobin was observed for left Brodmann area 46 for both the subtraction by ones (T = -3.97; Benjamini-Hochberg significance value (q) = 0.008) and subtraction by sevens (T = -3.11; q = 0.036) conditions relative to the baseline condition. The subtraction by sevens condition was also associated with a relative increase in deoxygenated hemoglobin for the right Brodmann area 9 (T = 3.36; q = 0.026) compared to the subtraction by ones condition. In conclusion, serial subtraction can elicit transient increases in postural sway, with more difficult tasks and the onset of the cognitive-motor challenge exhibiting magnified effects. Additionally, even the cessation of a cognitive task (i.e., serial subtraction) can be associated with lingering perturbing effects on balance control.
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Affiliation(s)
- Cody A Reed
- Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, USA.; Sanford Orthopedics & Sports Medicine Research, Sanford Health, Sioux Falls, SD, USA
| | - Camryn K DuBois
- Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, USA
| | - Keith A Hutchison
- Department of Psychology, Montana State University, Bozeman, MT, USA
| | - Theodore J Huppert
- Department of Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - Scott M Monfort
- Department of Mechanical and Industrial Engineering, Montana State University, Bozeman, MT, USA..
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da Costa Moraes AA, Duarte MB, Ferreira EV, da Silva Almeida GC, da Rocha Santos EG, Pinto GHL, de Oliveira PR, Amorim CF, Cabral ADS, de Athayde Costa e Silva A, Souza GS, Callegari B. Validity and Reliability of Smartphone App for Evaluating Postural Adjustments during Step Initiation. SENSORS (BASEL, SWITZERLAND) 2022; 22:2935. [PMID: 35458920 PMCID: PMC9030467 DOI: 10.3390/s22082935] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/17/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
The evaluation of anticipatory postural adjustments (APAs) requires high-cost and complex handling systems, only available at research laboratories. New alternative methods are being developed in this field, on the other hand, to solve this issue and allow applicability in clinic, sport and hospital environments. The objective of this study was to validate an app for mobile devices to measure the APAs during gait initiation by comparing the signals obtained from cell phones using the Momentum app with measurements made by a kinematic system. The center-of-mass accelerations of a total of 20 healthy subjects were measured by the above app, which read the inertial sensors of the smartphones, and by kinematics, with a reflective marker positioned on their lumbar spine. The subjects took a step forward after hearing a command from an experimenter. The variables of the anticipatory phase, prior to the heel-off and the step phase, were measured. In the anticipatory phase, the linear correlation of all variables measured by the two measurement techniques was significant and indicated a high correlation between the devices (APAonset: r = 0.95, p < 0.0001; APAamp: r = 0.71, p = 0.003, and PEAKtime: r = 0.95, p < 0.0001). The linear correlation between the two measurement techniques for the step phase variables measured by ques was also significant (STEPinterval: r = 0.56, p = 0.008; STEPpeak1: r = 0.79, p < 0.0001; and STEPpeak2: r = 0.64, p < 0.0001). The Bland−Altman graphs indicated agreement between instruments with similar behavior as well as subjects within confidence limits and low dispersion. Thus, using the Momentum cell phone application is valid for the assessment of APAs during gait initiation compared to the gold standard instrument (kinematics), proving to be a useful, less complex, and less costly alternative for the assessment of healthy individuals.
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Affiliation(s)
- Anderson Antunes da Costa Moraes
- Human Motricity Studies Laboratory, Av. Generalíssimo Deodoro 01, Belém 66073-000, PA, Brazil; (A.A.d.C.M.); (M.B.D.); (E.V.F.); (G.C.d.S.A.)
| | - Manuela Brito Duarte
- Human Motricity Studies Laboratory, Av. Generalíssimo Deodoro 01, Belém 66073-000, PA, Brazil; (A.A.d.C.M.); (M.B.D.); (E.V.F.); (G.C.d.S.A.)
| | - Eduardo Veloso Ferreira
- Human Motricity Studies Laboratory, Av. Generalíssimo Deodoro 01, Belém 66073-000, PA, Brazil; (A.A.d.C.M.); (M.B.D.); (E.V.F.); (G.C.d.S.A.)
| | - Gizele Cristina da Silva Almeida
- Human Motricity Studies Laboratory, Av. Generalíssimo Deodoro 01, Belém 66073-000, PA, Brazil; (A.A.d.C.M.); (M.B.D.); (E.V.F.); (G.C.d.S.A.)
| | - Enzo Gabriel da Rocha Santos
- Institute of Exact and Natural Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Belém 66093-020, PA, Brazil; (E.G.d.R.S.); (G.H.L.P.)
| | - Gustavo Henrique Lima Pinto
- Institute of Exact and Natural Sciences, Federal University of Pará, R. Augusto Corrêa, 01, Belém 66093-020, PA, Brazil; (E.G.d.R.S.); (G.H.L.P.)
| | - Paulo Rui de Oliveira
- Doctoral and Master’s Program in Physical Therapy, UNICID, 448/475 Cesário Galeno St., São Paulo 03071-000, SP, Brazil; (P.R.d.O.); (C.F.A.)
| | - César Ferreira Amorim
- Doctoral and Master’s Program in Physical Therapy, UNICID, 448/475 Cesário Galeno St., São Paulo 03071-000, SP, Brazil; (P.R.d.O.); (C.F.A.)
- Département des Sciences de la Santé, Programme de Physiothérapie de L’université McGill Offert en Extension à l’UQAC, Saguenay, QC G7H 2B1,Canada
- Physical Therapy and Neuroscience Departments, Wertheims’ Colleges of Nursing and Health Sciences and Medicine, Florida International University (FIU), Miami, FL 33199, USA
| | - André dos Santos Cabral
- Center for Biological and Health Sciences, Pará State University, Tv. Perebebuí, 2623—Marco, Belém 66087-662, PA, Brazil;
| | - Anselmo de Athayde Costa e Silva
- Postgraduate Program in Movement Science, Federal University of Pará, Av. Generalíssimo Deodoro 01, Belém 66073-000, PA, Brazil;
| | - Givago Silva Souza
- Institute of Biological Sciences, Federal University of Pará, R. Augusto Corrêa 01, Belém 66075-110, PA, Brazil;
- Tropical Medicine Nucleus, Federal University of Pará, Avenida Generalíssimo Deodoro 92, Belém 66055-240, PA, Brazil
| | - Bianca Callegari
- Human Motricity Studies Laboratory, Av. Generalíssimo Deodoro 01, Belém 66073-000, PA, Brazil; (A.A.d.C.M.); (M.B.D.); (E.V.F.); (G.C.d.S.A.)
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Lev-Ari T, Beeri H, Gutfreund Y. The Ecological View of Selective Attention. Front Integr Neurosci 2022; 16:856207. [PMID: 35391754 PMCID: PMC8979825 DOI: 10.3389/fnint.2022.856207] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/24/2022] [Indexed: 11/16/2022] Open
Abstract
Accumulating evidence is supporting the hypothesis that our selective attention is a manifestation of mechanisms that evolved early in evolution and are shared by many organisms from different taxa. This surge of new data calls for the re-examination of our notions about attention, which have been dominated mostly by human psychology. Here, we present an hypothesis that challenges, based on evolutionary grounds, a common view of attention as a means to manage limited brain resources. We begin by arguing that evolutionary considerations do not favor the basic proposition of the limited brain resources view of attention, namely, that the capacity of the sensory organs to provide information exceeds the capacity of the brain to process this information. Moreover, physiological studies in animals and humans show that mechanisms of selective attention are highly demanding of brain resources, making it paradoxical to see attention as a means to release brain resources. Next, we build on the above arguments to address the question why attention evolved in evolution. We hypothesize that, to a certain extent, limiting sensory processing is adaptive irrespective of brain capacity. We call this hypothesis the ecological view of attention (EVA) because it is centered on interactions of an animal with its environment rather than on internal brain resources. In its essence is the notion that inherently noisy and degraded sensory inputs serve the animal’s adaptive, dynamic interactions with its environment. Attention primarily functions to resolve behavioral conflicts and false distractions. Hence, we evolved to focus on a particular target at the expense of others, not because of internal limitations, but to ensure that behavior is properly oriented and committed to its goals. Here, we expand on this notion and review evidence supporting it. We show how common results in human psychophysics and physiology can be reconciled with an EVA and discuss possible implications of the notion for interpreting current results and guiding future research.
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Affiliation(s)
- Tidhar Lev-Ari
- The Ruth and Bruce Rappaport Faculty of Medicine and Research Institute, The Technion, Haifa, Israel
| | - Hadar Beeri
- The Ruth and Bruce Rappaport Faculty of Medicine and Research Institute, The Technion, Haifa, Israel
| | - Yoram Gutfreund
- The Ruth and Bruce Rappaport Faculty of Medicine and Research Institute, The Technion, Haifa, Israel
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Chaudhary S, Saywell N, Taylor D. The Differentiation of Self-Motion From External Motion Is a Prerequisite for Postural Control: A Narrative Review of Visual-Vestibular Interaction. Front Hum Neurosci 2022; 16:697739. [PMID: 35210998 PMCID: PMC8860980 DOI: 10.3389/fnhum.2022.697739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 01/18/2022] [Indexed: 11/13/2022] Open
Abstract
The visual system is a source of sensory information that perceives environmental stimuli and interacts with other sensory systems to generate visual and postural responses to maintain postural stability. Although the three sensory systems; the visual, vestibular, and somatosensory systems work concurrently to maintain postural control, the visual and vestibular system interaction is vital to differentiate self-motion from external motion to maintain postural stability. The visual system influences postural control playing a key role in perceiving information required for this differentiation. The visual system’s main afferent information consists of optic flow and retinal slip that lead to the generation of visual and postural responses. Visual fixations generated by the visual system interact with the afferent information and the vestibular system to maintain visual and postural stability. This review synthesizes the roles of the visual system and their interaction with the vestibular system, to maintain postural stability.
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Lacour M, Tardivet L, Thiry A. Posture Deficits and Recovery After Unilateral Vestibular Loss: Early Rehabilitation and Degree of Hypofunction Matter. Front Hum Neurosci 2022; 15:776970. [PMID: 35185493 PMCID: PMC8855301 DOI: 10.3389/fnhum.2021.776970] [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: 09/14/2021] [Accepted: 12/03/2021] [Indexed: 11/27/2022] Open
Abstract
Postural instability and balance impairment are disabling symptoms in patients with acute unilateral peripheral vestibular hypofunction (UVH). Vestibular rehabilitation (VR) is known to improve the vestibular compensation process, but (1) its effect on posture recovery remains poorly understood, (2) little is known about when VR must be done, and (3) whether the degree of vestibular loss matters is uncertain. We analyzed posture control under static (stable support) and dynamic (unstable support) postural tasks performed in different visual conditions [eye open (EO); eyes closed (EC); and optokinetic stimulation] using dynamic posturography. Non-linear analyses of the postural performance (wavelet transform, diffusion analysis, and fractal analysis) were performed in two groups of patients with UVH subjected to the same VR program based on the unidirectional rotation paradigm and performed either early (first 2 weeks) or later (fifth to the sixth week) after vertigo attack. Distribution of the angular horizontal vestibulo-ocular reflex (aVOR) gain values recorded on the hypofunction side before rehabilitation differentiated two distinct sub-groups (cluster analysis) with aVOR gains below or above 0.20. The postural performance of the four sub-groups of patients with UVH (early rehabilitation with aVOR gain <0.20: n = 25 or gain >0.20: n = 19; late rehabilitation with aVOR gain <0.20: n = 15 or gain >0.20: n = 10) tested before VR showed significantly altered postural parameters compared with healthy controls. Greater instability, higher energy to control posture, larger sway without feedback corrections, and lower time of automatic control of posture were observed in static conditions. The four sub-groups recovered near-normal postural performance after VR in the EO and EC conditions, but still exhibited altered postural performance with optokinetic stimulation. In dynamic posturography conditions and before VR, the percentage of patients able to perform the postural tasks with EC and optokinetic stimulation was significantly lower in the two sub-groups with aVOR gain <0.20. After VR, the improvement of the postural parameters depended on the stage of rehabilitation and the degree of vestibular hypofunction. The best balance function recovery was found in the sub-group with early VR and pre-rehabilitation aVOR gain above 0.20, the worst in the sub-group with late rehabilitation and aVOR gain below 0.20. These differences were seen when the vestibular input remains the main sensory cue to control balance, that is, on unstable support without vision or altered visual motion cues. These findings extend to dynamic balance recovery the crucial roles of early rehabilitation and degree of vestibular hypofunction which we have already highlighted for vestibulo-ocular reflex recovery.
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Affiliation(s)
- Michel Lacour
- Neurosciences Department, Aix-Marseille University/CNRS, Marseille, France
- 21 Impasse des Vertus, Fuveau, France
- *Correspondence: Michel Lacour,
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Mnejja K, Fendri T, Chaari F, Harrabi MA, Sahli S. Reference values of postural balance in preschoolers: Age and gender differences for 4-5 years old Tunisian children. Gait Posture 2022; 92:401-406. [PMID: 34959208 DOI: 10.1016/j.gaitpost.2021.12.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 11/09/2021] [Accepted: 12/12/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Preschool age is a critical stage of postural balance development. Posturography normative data during this age are crucial for surveillance of postural balance and for the timely diagnosis of any dysfunction. The aim of this study was to provide normative data, specific to Tunisian preschoolers, according to age and gender, and to examine gender- and age-related differences in postural balance. RESEARCH QUESTION Are there postural balance gender- and age-related differences in Tunisian preschoolers? METHODS The study included 410 (205 boys and 205 girls) preschool children aged between 4- and 5-year-old selected within a large geographic area of Tunisia. Postural balance was assessed using a stabilometric platform under 4 sensory conditions. The mean center of pressure velocity (CoP-V) parameter was selected for analysis. Differences between gender and age groups were analysed using the Mann-Whitney U. Normative data were expressed in percentiles. RESULTS Significant gender effect was found in conditions where sensory inputs are most challenged with a significantly smaller mean CoP-V in girls compared to boys (p < 0.05). Moreover, 5-year-old children had significantly better postural balance than 4-year-old ones in almost all conditions (p < 0.05). SIGNIFICANCE The normative data established for Tunisian preschoolers provide useful comparative data for pediatricians, teachers and coaches for the early evaluation and monitoring of postural balance during this age. Gender and age-related differences should be considered in this population.
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Affiliation(s)
- Khouloud Mnejja
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia.
| | - Thouraya Fendri
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia.
| | - Fatma Chaari
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia.
| | - Mohammed Achraf Harrabi
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia.
| | - Sonia Sahli
- Laboratory 'Education, Motricity, Sports and Health', (EM2S, LR19JS01), High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia.
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A Comparison of Left and Right Leg Static Balance Parameters in Young Handball Players. JOURNAL OF BASIC AND CLINICAL HEALTH SCIENCES 2022. [DOI: 10.30621/jbachs.1059392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Parent A, Ballaz L, Samadi B, Vocos Pht M, Comtois AS, Pouliot-Laforte A. Static Postural Control Deficits in Adults with Myotonic Dystrophy Type 1, Steinert Disease. J Neuromuscul Dis 2022; 9:311-320. [PMID: 35001896 DOI: 10.3233/jnd-210639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Myotonic dystrophy type 1 (DM1) is characterized by progressive and predominantly distal muscle atrophy and myotonia. Gait and balance impairments, resulting in falls, are frequently reported in this population. However, the extent to which individuals with DM1 rely more on a specific sensory system for balance than asymptomatic individuals (AI) is unknown. OBJECTIVE Evaluate postural control performance in individuals with DM1 and its dependence on vision compared to AI. METHODS 20 participants with DM1, divided into two groups based on their diagnosis, i.e. adult and congenital phenotype, and 12 AI participants were recruited. Quiet standing postural control was assessed in two visual conditions: eyes-open and eyes-closed. The outcomes measures were center of pressure (CoP) mean velocity, CoP range of displacement in anteroposterior and mediolateral axis, and the 95% confidence ellipse's surface. Friedman and Kruskal-Wallis analysis of variance were used to compare outcomes between conditions and groups, respectively. RESULTS Significant group effect and condition effect were observed on postural control performance. No significant difference was observed between the two DM1 groups. The significant differences observed between the AI group and the two DM1 groups in the eyes-open condition were also observed in the eyes-closed condition. CONCLUSIONS The result revealed poorer postural control performance in people with DM1 compared to AI. The DM1 group also showed similar decrease in performance than AI in eyes-closed condition, suggesting no excessive visual dependency.
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Affiliation(s)
- Audrey Parent
- Sainte-Justine UHC Research Center, Centre de Réadaptation Marie Enfant, 5200 rue Bélanger, Montreal (Qc), H1T 1C9, Canada.,Department of Physical Activity Sciences, Université du Québec à Montréal (UQAM), 141 Avenue du Président-Kennedy, Local SB-4290, Montreal (Qc), H2X 1Y4, Canada
| | - Laurent Ballaz
- Sainte-Justine UHC Research Center, Centre de Réadaptation Marie Enfant, 5200 rue Bélanger, Montreal (Qc), H1T 1C9, Canada.,Department of Physical Activity Sciences, Université du Québec à Montréal (UQAM), 141 Avenue du Président-Kennedy, Local SB-4290, Montreal (Qc), H2X 1Y4, Canada
| | - Bahare Samadi
- Sainte-Justine UHC Research Center, Centre de Réadaptation Marie Enfant, 5200 rue Bélanger, Montreal (Qc), H1T 1C9, Canada.,Department of MechanicalEngineering, École Polytechnique de Montréal, 2900 Boulevard Edouard-Montpetit, Montreal (Qc) H3T 1J4, Canada
| | - Maria Vocos Pht
- Centre de réadaptation Lucie-Bruneau du Centreintégré universitaire de santé et services sociaux(CIUSSS) du Centre-Sud-de-l'Île-de-Montréal, 2275 AvenueLaurier E, Montréal (Qc), H2H 2N8, Canada
| | - Alain Steve Comtois
- Department of Physical Activity Sciences, Université du Québec à Montréal (UQAM), 141 Avenue du Président-Kennedy, Local SB-4290, Montreal (Qc), H2X 1Y4, Canada
| | - Annie Pouliot-Laforte
- Sainte-Justine UHC Research Center, Centre de Réadaptation Marie Enfant, 5200 rue Bélanger, Montreal (Qc), H1T 1C9, Canada.,Department of Physical Activity Sciences, Université du Québec à Montréal (UQAM), 141 Avenue du Président-Kennedy, Local SB-4290, Montreal (Qc), H2X 1Y4, Canada
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Yap YY, Tan SH, Choon SW. Elderly's intention to use technologies: A systematic literature review. Heliyon 2022; 8:e08765. [PMID: 35128090 PMCID: PMC8800037 DOI: 10.1016/j.heliyon.2022.e08765] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 12/06/2021] [Accepted: 01/11/2022] [Indexed: 11/25/2022] Open
Abstract
The population aging and an increased life expectancy are widely recognized social changes. Technologies are believed to improve the elderly's daily lives and maintain their health efficiently. Despite the advantage of adopting technologies, the elderly are slower to adopt new technologies compared to younger adults. This paper presents a Systematic Literature Review (SLR) to identify the different antecedents prevailing in the literature on elderly technology adoption. The SLR classifies and analyzes 26 relevant articles on elderly's technology adoption. Our findings revealed that quantitative approach and cross-sectional studies predominate in this field, building fundamentally upon the technology-driven theories. We identify seven categories of antecedents influencing elderly's use of technology, namely, technology, psychological, social, personal, cost, behavior, and environment antecedents. A conceptual framework for elderly's technology adoption and recommendations were presented. Particular attention is given to the need for in depth study for the antecedents, development of new measurement scales and investigation on the effectiveness of the proposed benefits after technology adoption.
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Affiliation(s)
- Yee-Yann Yap
- Faculty of Management, Multimedia University, Persiaran Multimedia, 63100 Cyberjaya, Selangor, Malaysia
| | - Siow-Hooi Tan
- Faculty of Management, Multimedia University, Persiaran Multimedia, 63100 Cyberjaya, Selangor, Malaysia
| | - Shay-Wei Choon
- Faculty of Management, Multimedia University, Persiaran Multimedia, 63100 Cyberjaya, Selangor, Malaysia
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Postural Control and Adaptation Strategy of Young Adults on Unstable Surface. Motor Control 2022; 27:179-193. [PMID: 36216337 DOI: 10.1123/mc.2021-0138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 07/06/2022] [Accepted: 08/10/2022] [Indexed: 11/11/2022]
Abstract
Balance control is essential for postural adjustment in physical activities. This study investigates the behavior of human postural control and the coordination and adaptation strategy of hip, knee, and ankle when standing on an unstable surface. Twenty participants were recruited. Four different conditions were investigated: a quiet bipedal stance with eyes open and eyes closed, and standing on an unstable surface with eyes open and eyes closed. Other than the joint angle, the standard body sway measures, such as sway area and sway velocity, were computed. A nonlinear time series measure, that is, sample entropy, was used to determine the regularity of the time series and body adaptability to change and perturbation. The results show that the body sway increases as the difficulty increases. This study also confirms the coordination of the hip, knee, and ankle to maintain body balance on the unstable surface by decreasing the joint angle and adopting a lower posture. Even though the individual joint has lower sample entropy value and is deemed to be rigid and less adaptive to perturbation, the postural control exhibits higher sample entropy value, particularly in the anterior–posterior direction, and has the ability to stabilize the body by manipulating the joints simultaneously. These outcomes suggest that an unstable surface not only challenges the human postural control, but also reduces the hip, knee, and ankle adaptability to perturbation, thus making it a great tool to train body balance.
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Pelvic floor muscle training and postural balance in elderly women: An exploratory single arm trial. J Bodyw Mov Ther 2022; 29:279-285. [DOI: 10.1016/j.jbmt.2021.09.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 07/12/2021] [Accepted: 09/24/2021] [Indexed: 12/11/2022]
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Lebert A, Chaby L, Guillin A, Chekroun S, Vergilino-Perez D. Are You “Gazing” at Me? How Others' Gaze Direction and Facial Expression Influence Gaze Perception and Postural Control. Front Psychol 2021; 12:730953. [PMID: 35002834 PMCID: PMC8733602 DOI: 10.3389/fpsyg.2021.730953] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 12/03/2021] [Indexed: 11/13/2022] Open
Abstract
In everyday life, interactions between humans are generally modulated by the value attributed to the situation, which partly relies on the partner's behavior. A pleasant or cooperating partner may trigger an approach behavior in the observer, while an unpleasant or threatening partner may trigger an avoidance behavior. In this context, the correct interpretation of other's intentions is crucial to achieve satisfying social interactions. Social cues such as gaze direction and facial expression are both fundamental and interrelated. Typically, whenever gaze direction and facial expression of others communicate the same intention, it enhances both the interlocutor's gaze direction and the perception of facial expressions (i.e., shared signal hypothesis). For instance, an angry face with a direct gaze is perceived as more intense since it represents a threat to the observer. In this study, we propose to examine how the combination of others' gaze direction (direct or deviated) and emotional facial expressions (i.e., happiness, fear, anger, sadness, disgust, and neutrality) influence the observer's gaze perception and postural control. Gaze perception was indexed by the cone of direct gaze (CoDG) referring to the width over which an observer feels someone's gaze is directed at them. A wider CoDG indicates that the observer perceived the face as looking at them over a wider range of gaze directions. Conversely, a narrower CoDG indicates a decrease in the range of gaze directions perceived as direct. Postural control was examined through the center of pressure displacements reflecting postural stability and approach-avoidance tendencies. We also investigated how both gaze perception and postural control may vary according to participants' personality traits and emotional states (e.g., openness, anxiety, etc.). Our results confirmed that gaze perception is influenced by emotional faces: a wider CoDGs was observed with angry and disgusted faces while a narrower CoDG was observed for fearful faces. Furthermore, facial expressions combined with gaze direction influence participants' postural stability but not approach-avoidance behaviors. Results are discussed in the light of the approach-avoidance model, by considering how some personality traits modulate the relation between emotion and posture.
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Affiliation(s)
- Angélique Lebert
- Vision Action Cognition, Université de Paris, Boulogne-Billancourt, France
- *Correspondence: Angélique Lebert
| | - Laurence Chaby
- CNRS, Institut des Systèmes Intelligents et de Robotique, Sorbonne Université, Paris, France
- Université de Paris, Boulogne-Billancourt, France
| | - Amandine Guillin
- Vision Action Cognition, Université de Paris, Boulogne-Billancourt, France
| | - Samuel Chekroun
- Vision Action Cognition, Université de Paris, Boulogne-Billancourt, France
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