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Ersoy T, Kaya P, Hocaoglu E, Unal R. I-BaR: integrated balance rehabilitation framework. Front Neurorobot 2024; 18:1401931. [PMID: 39021504 PMCID: PMC11252086 DOI: 10.3389/fnbot.2024.1401931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 06/10/2024] [Indexed: 07/20/2024] Open
Abstract
Neurological diseases are observed in approximately 1 billion people worldwide. A further increase is foreseen at the global level as a result of population growth and aging. Individuals with neurological disorders often experience cognitive, motor, sensory, and lower extremity dysfunctions. Thus, the possibility of falling and balance problems arise due to the postural control deficiencies that occur as a result of the deterioration in the integration of multi-sensory information. We propose a novel rehabilitation framework, Integrated Balance Rehabilitation (I-BaR), to improve the effectiveness of the rehabilitation with objective assessment, individualized therapy, convenience with different disability levels and adoption of assist-as-needed paradigm and, with integrated rehabilitation process as whole, that is, ankle-foot preparation, balance, and stepping phases, respectively. Integrated Balance Rehabilitation allows patients to improve their balance ability by providing multi-modal feedback: visual via utilization of virtual reality; vestibular via anteroposterior and mediolateral perturbations with the robotic platform; proprioceptive via haptic feedback.
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Affiliation(s)
- Tugce Ersoy
- Department of Mechanical Engineering, Human-Centered Design Laboratory, Ozyegin University, Istanbul, Türkiye
| | - Pınar Kaya
- Department of Physiotherapy and Rehabilitation, Istanbul Medipol University, Istanbul, Türkiye
| | - Elif Hocaoglu
- Department of Electrical and Electronics Engineering, Living Robotics Laboratory, Istanbul Medipol University, Istanbul, Türkiye
- SABITA (Research Institute for Health Sciences and Technologies), Istanbul Medipol University, Istanbul, Türkiye
| | - Ramazan Unal
- Department of Mechanical Engineering, Human-Centered Design Laboratory, Ozyegin University, Istanbul, Türkiye
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Mathunny JJ, S HK, Devaraj A, Karthik V. Design and Performance Analysis of a Mecanum-Built Perturbation-Based Balance Training Device. Appl Bionics Biomech 2024; 2024:3622556. [PMID: 38586182 PMCID: PMC10997419 DOI: 10.1155/2024/3622556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/26/2024] [Accepted: 03/11/2024] [Indexed: 04/09/2024] Open
Abstract
This study proposes a mecanum-built perturbation-based balance training device aimed at improving motor adaptive skills for fall prevention in individuals with neurological disorders or the elderly. Incorporating multidirectional fall simulations in line with modified constraint-induced movement therapy, the device's efficacy was evaluated by measuring the distance traveled and peak acceleration under different static loads (20, 30, and 40 kg) and input accelerations (1, 2, and 3 m/s2). A pilot study with 10 subjects was conducted to assess device performance, utilizing repeated measures analysis of variance and Bonferroni's post hoc analysis. Results indicated a load-dependent reduction in distance traveled, with an average mean difference of 0.74-1.23 cm between the 20 and 40 kg loads for trials of 9 and 18 cm, respectively. Despite varying loads, the device consistently achieved near-anticipated peak accelerations, suggesting its capability to induce effective perturbations. The study also observed a significant lateral movement preference, suggesting adjustments to pulse width modulation and time period may optimize lateral movement performance.
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Affiliation(s)
- Jaison Jacob Mathunny
- Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Hari Krishnan S
- Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Ashokkumar Devaraj
- Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Varshini Karthik
- Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
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Nevisipour M, Honeycutt CF. Investigating the underlying biomechanical mechanisms leading to falls in long-term ankle-foot orthosis and functional electrical stimulator users with chronic stroke. Gait Posture 2022; 92:144-152. [PMID: 34847412 PMCID: PMC8900662 DOI: 10.1016/j.gaitpost.2021.11.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 10/25/2021] [Accepted: 11/17/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Ankle-foot-orthoses (AFOs) and functional electrical stimulators (FES) are commonly prescribed to treat foot-drop in individuals with stroke. Despite well-established positive impacts of AFO and FES devices on balance and gait, AFO and FES-users still fall at a high rate. OBJECTIVE The objective of this study was to investigate 1) the underlying biomechanical mechanisms leading to a fall in long-term AFO and FES-users with chronic stroke and 2) the impacts of AFOs and FES devices on fall outcomes and compensatory stepping response of long-term users with chronic stroke. METHODS Fall outcomes as well as kinematics and kinetics of compensatory stepping response of 42 individuals with chronic stroke (14 AFO-users, 10 FES-users, 18 Non-users) were evaluated during trip-like treadmill perturbations. AFO and FES-users were evaluated with and without their device. RESULTS Chronic AFO and FES-users fell 2.50 and 2.77 times more than Non-users. The most robust differences between AFO/FES-users and Non-users were 1) Reduced capacity to stabilize the trunk through reduction in forward whole-body angular momentum and 2) diminished capability to prepare and generate a second step using the paretic leg. Provocatively, the removal of AFO and FES devices did not decease/increase falls or change kinematics. SIGNIFICANCE It is well-established that AFOs/FES devices have a positive impact on static balance and decrease community falls by increasing toe clearance thus preventing trips/stumbles. However, our results suggest that once a trip occurs, these devices do not adequately assist recovery of balance. Specifically, current AFO and FES devices do not assist with second step generation or trunk control. Future studies should explore new devices or training paradigms that target enhancing trunk control and paretic compensatory stepping to decrease falls in this population.
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Affiliation(s)
- Masood Nevisipour
- School for Engineering of Matter, Transport & Energy, Arizona State University, Tempe, AZ, USA
| | - Claire F. Honeycutt
- School of Biological and Health System Engineering, Arizona State University, Tempe, AZ, USA
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MADEN T, YAKUT H, YAKUT Y, AKÇALI A. Effects of Perturbation Training on Balance, Walking, and Lumbar Stabilization in Patients with Multiple Sclerosis: A Pilot Study. BEZMIALEM SCIENCE 2022. [DOI: 10.14235/bas.galenos.2021.5243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Alayat MSM, Almatrafi NA, El Fiky AAR, Elsodany AM, Shousha TM, Basuodan R. The Effectiveness of Perturbation-Based Training in the Treatment of Patients With Stroke: A Systematic Review and Meta-Analysis. Neurosci Insights 2022; 17:26331055221114818. [PMID: 35910084 PMCID: PMC9329815 DOI: 10.1177/26331055221114818] [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: 03/28/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022] Open
Abstract
Purpose: To investigate the effectiveness of perturbation-based training (PBT) on balance and balance confidence in patients with stroke. Methods: Systematic searching was performed from inception to November 2021. The inclusion criteria were RCTs assessed the effectiveness of PBT in patients with stroke. Data regarding participants, intervention parameters, outcome measures, follow-up, and main results were extracted. The outcomes were balance and balance confidence. Methodological quality and quality of evidence were assessed using the Physiotherapy Evidence Database (PEDro) scale and the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system; respectively. Data analysis: A total of 7 articles )271 patients) were included. A meta-analysis using a random-effect model was performed on 6 studies. Standardized mean difference (SMD) with a 95% confidence interval was calculated for balance and balance confidence. Results: PEDro scale revealed 5 good-quality and 2 fair-quality studies. The currently available evidence showed significant effect of PBT in improving balance (SMD 0.60 [95% CI 0.15-1.06]; P = .01; very low-quality evidence) and non-significant in improving balance confidence (SMD 0.11 [95% CI −0.24 to 0.45]; P = .55; low-quality evidence). Conclusion: PBT may improve balance in patients with stroke, however its effect on balance confidence was limited. The quality of the evidence was low or very low with little confidence in the effect estimate, which suggests further high-quality trials are required. Registration: PROSPERO registration number (CRD42021291474).
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Affiliation(s)
- Mohamed Salaheldien Mohamed Alayat
- Physiotherapy and Rehabilitation Department, Faculty of Applied Medical Science, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Basic Science, Faculty of Physical Therapy, Cairo University, Egypt
| | - Nahla Ahmad Almatrafi
- Physiotherapy and Rehabilitation Department, Faculty of Applied Medical Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Amir Abdel Raouf El Fiky
- Department of Physical Therapy for Neurological Disorders and its Surgery, Faculty of Physical Therapy, Cairo University, Giza, Egypt
| | | | - Tamer Mohamed Shousha
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
| | - Reem Basuodan
- Department of Rehabilitation Sciences, College of Health and Rehabilitation Sciences, Princess Nourah bint Abdulrahman University Riyadh, Saudi Arabia
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Maldonado-Díaz M, Vargas P, Vasquez R, Gonzalez-Seguel F, Rivero B, Hidalgo-Cabalín V, Gutierrez-Panchana T. Teleneurorehabilitation program (virtual reality) for patients with balance disorders: descriptive study. BMC Sports Sci Med Rehabil 2021; 13:83. [PMID: 34340687 PMCID: PMC8330090 DOI: 10.1186/s13102-021-00314-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/09/2021] [Indexed: 11/24/2022]
Abstract
Background Balance disorders are common in patients with neurological or vestibular diseases. Telerehabilitation program is a treatment to be as safe as conventional treatment. One of the most used methods to perform telerehabilitation is the incorporation of Virtual Reality. In general, rehabilitation programs train predictive postural control, so the patient does not always acquire the necessary autonomy to react to situations of instability. On the other hand, the objective and systematic supervision and measurement of these programs is limited, making it necessary to create clinical protocols with precise and measurable rehabilitation objectives. This study present the training selection methodology and clinical protocol for patients with balance disorders inserted in a Telerehabilitation Program based on Virtual Reality. Methods Descriptive study where physiotherapists were trained to use RehaMetrics®. To evaluate their level of agreement in the selection of the exercise clusters developed, the Interobserver Reliability was measured through the kappa statistic. Subsequently, the exercises were applied to a group of patients recruited with sedentary trunk control (Berg Balance Scale = 3 points in item 3), mild or normal cognitive level (Montreal Cognitive Assessment> 21 points), and prescribed for tele-rehabilitation by a doctor. Results The agreement among the expert physiotherapists irrespective of the cluster exceeds 80%, which indicates a very good strength of agreement, while the novices reached a level of agreement of 45%, which suggests a moderate strength of agreement. All clinical outcomes showed statistically significant differences between the median times, as did the Maximum Width Left Side (MWLS) (cm). The average number of minutes of training was 485.81 (SD 246.49 min), and the number of sessions performed during the 4 weeks of intervention was 17 (SD 7.15 sessions). Conclusions This analysis what had excellent interobserver reliability with trained physiotherapists. Regarding the second phase of the study, the results show a statistically significant difference between the initial and final evaluation of the clinical tests, which could result in better performance in aspects such as: balance, gait functionality, meter walked and cognition. Telerehabilitation Program based on Virtual Reality is an excellent alternative to provide continuity of treatment to patients with balance disorders. Supplementary Information The online version contains supplementary material available at 10.1186/s13102-021-00314-z.
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Affiliation(s)
- Marcos Maldonado-Díaz
- Clinica Alemana Universidad del Desarrollo, Vitacura 5951. Región Metropolitana, Santiago, Chile.
| | - Patricia Vargas
- Clinica Alemana Universidad del Desarrollo, Vitacura 5951. Región Metropolitana, Santiago, Chile
| | - Ricardo Vasquez
- Clinica Alemana Universidad del Desarrollo, Vitacura 5951. Región Metropolitana, Santiago, Chile
| | - Felipe Gonzalez-Seguel
- Clinica Alemana Universidad del Desarrollo, Vitacura 5951. Región Metropolitana, Santiago, Chile
| | - Betel Rivero
- Clinica Alemana Universidad del Desarrollo, Vitacura 5951. Región Metropolitana, Santiago, Chile
| | - Viviane Hidalgo-Cabalín
- Clinica Alemana Universidad del Desarrollo, Vitacura 5951. Región Metropolitana, Santiago, Chile
| | - Tania Gutierrez-Panchana
- Clinica Alemana Universidad del Desarrollo, Vitacura 5951. Región Metropolitana, Santiago, Chile
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Luvizutto GJ, Silva GF, Nascimento MR, Sousa Santos KC, Appelt PA, de Moura Neto E, de Souza JT, Wincker FC, Miranda LA, Hamamoto Filho PT, de Souza LAPS, Simões RP, de Oliveira Vidal EI, Bazan R. Use of artificial intelligence as an instrument of evaluation after stroke: a scoping review based on international classification of functioning, disability and health concept. Top Stroke Rehabil 2021; 29:331-346. [PMID: 34115576 DOI: 10.1080/10749357.2021.1926149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Introduction: To understand the current practices in stroke evaluation, the main clinical decision support system and artificial intelligence (AI) technologies need to be understood to assist the therapist in obtaining better insights about impairments and level of activity and participation in persons with stroke during rehabilitation. Methods: This scoping review maps the use of AI for the functional evaluation of persons with stroke; the context involves any setting of rehabilitation. Data were extracted from CENTRAL, MEDLINE, EMBASE, LILACS, CINAHL, PEDRO Web of Science, IEEE Xplore, AAAI Publications, ACM Digital Library, MathSciNet, and arXiv up to January 2021. The data obtained from the literature review were summarized in a single dataset in which each reference paper was considered as an instance, and the study characteristics were considered as attributes. The attributes used for the multiple correspondence analysis were publication year, study type, sample size, age, stroke phase, stroke type, functional status, AI type, and AI function. Results: Forty-four studies were included. The analysis showed that spasticity analysis based on ML techniques was used for the cases of stroke with moderate functional status. The techniques of deep learning and pressure sensors were used for gait analysis. Machine learning techniques and algorithms were used for upper limb and reaching analyses. The inertial measurement unit technique was applied in studies where the functional status was between mild and severe. The fuzzy logic technique was used for activity classifiers. Conclusion: The prevailing research themes demonstrated the growing utility of AI algorithms for stroke evaluation.
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Affiliation(s)
- Gustavo José Luvizutto
- Department of Applied Physical Therapy, Federal University of Triângulo Mineiro, Uberaba, Brazil
| | | | | | | | | | | | - Juli Thomaz de Souza
- Department of Internal Medicine, Botucatu Medical School, Brazil.,Department of Neurology, Psychology and Psychiatry, Botucatu Medical School, Brazil
| | - Fernanda Cristina Wincker
- Department of Internal Medicine, Botucatu Medical School, Brazil.,Department of Neurology, Psychology and Psychiatry, Botucatu Medical School, Brazil
| | - Luana Aparecida Miranda
- Department of Internal Medicine, Botucatu Medical School, Brazil.,Department of Neurology, Psychology and Psychiatry, Botucatu Medical School, Brazil
| | | | | | - Rafael Plana Simões
- Department of Bioprocesses and Biotechnology, São Paulo State University, Botucatu, SP, Brazil
| | | | - Rodrigo Bazan
- Department of Neurology, Psychology and Psychiatry, Botucatu Medical School, Brazil
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Binary dance rhythm or Quaternary dance rhythm which has the greatest effect on non-motor symptoms of individuals with Parkinson's disease? Complement Ther Clin Pract 2021; 43:101348. [PMID: 33743390 DOI: 10.1016/j.ctcp.2021.101348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 02/12/2021] [Accepted: 02/27/2021] [Indexed: 12/15/2022]
Abstract
This study aimed to compare the effect of a binary and quaternary rhythm protocol on cognition, mental activity, daily life, and quality of life among individuals with Parkinson's Disease. A two-arm randomized clinical trial with 31 individuals diagnosed with Parkinson's disease, who were allocated to the binary group or quaternary group. Both groups underwent a 12-week intervention. The following variables were analyzed: personal and clinical information; MoCA; UPDRSI and II; PDQ-39. Both intervention groups improved cognition, mental activity, activities of daily living, and quality of life. In addition, there were intergroup differences in total UPDRSII, writing, and hygiene where the quaternary group was superior to the binary group. It concludes that the binary and quaternary rhythm positively influenced and presented similar effects on the complementary treatment of individuals with Parkinson's disease on the studied variables. Thus, it is believed that both interventions are possible and feasible for the health professionals involved in the area.
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Mansfield A, Inness EL, Danells CJ, Jagroop D, Bhatt T, Huntley AH. Determining the optimal dose of reactive balance training after stroke: study protocol for a pilot randomised controlled trial. BMJ Open 2020; 10:e038073. [PMID: 32847916 PMCID: PMC7451480 DOI: 10.1136/bmjopen-2020-038073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/30/2020] [Accepted: 07/20/2020] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Falls risk poststroke is highest soon after discharge from rehabilitation. Reactive balance training (RBT) aims to improve control of reactions to prevent falling after a loss of balance. In healthy older adults, a single RBT session can lead to lasting improvements in reactive balance control and prevent falls in daily life. While increasing the dose of RBT does not appear to lead to additional benefit for healthy older adults, stroke survivors, who have more severely impaired balance control, may benefit from a higher RBT dose. Our long-term goal is to determine the optimal dose of RBT in people with subacute stroke. This assessor-blinded pilot randomised controlled trial aims to inform the design of a larger trial to address this long-term goal. METHODS AND ANALYSIS Participants (n=36) will be attending out-patient stroke rehabilitation, and will be randomly allocated to one of three groups: one, three or six RBT sessions. RBT will replace a portion of participants' regular physiotherapy so that the total physical rehabilitation time will be the same for the three groups. Balance and balance confidence will be assessed at: (1) study enrolment; (2) out-patient rehabilitation discharge; and (3) 6 months postdischarge. Participants will report falls and physical activity for 6 months postdischarge. Pilot data will be used to plan the larger trial (ie, sample size estimate using fall rates, and which groups should be included based on between-group trends in pre-to-post training effect sizes for reactive balance control measures). Pilot data will also be used to assess the feasibility of the larger trial (ie, based on the accrual rate, outcome completion rate and feasibility of prescribing specific training doses). ETHICS AND DISSEMINATION Institutional research ethics approval has been received. Study participants will receive a lay summary of results. We will also publish our findings in a peer-reviewed journal. TRIAL REGISTRATION NUMBER NCT04219696; Pre results.
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Affiliation(s)
- Avril Mansfield
- Toronto Rehabilitation Institute - University Health Network, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
- Evaluative Clinical Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Elizabeth L Inness
- Toronto Rehabilitation Institute - University Health Network, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Cynthia J Danells
- Toronto Rehabilitation Institute - University Health Network, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - David Jagroop
- Toronto Rehabilitation Institute - University Health Network, Toronto, Ontario, Canada
| | - Tanvi Bhatt
- Department of Physical Therapy, University of Illinois, Chicago, Illinois, USA
| | - Andrew H Huntley
- Toronto Rehabilitation Institute - University Health Network, Toronto, Ontario, Canada
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Barzideh A, Marzolini S, Danells C, Jagroop D, Huntley AH, Inness EL, Mathur S, Mochizuki G, Oh P, Mansfield A. Effect of reactive balance training on physical fitness poststroke: study protocol for a randomised non-inferiority trial. BMJ Open 2020; 10:e035740. [PMID: 32606059 PMCID: PMC7328813 DOI: 10.1136/bmjopen-2019-035740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Regular exercise is essential in the chronic phase of stroke recovery for improving or maintaining function, and reducing the risk of a second stroke. To achieve these goals, multiple components of fitness should be targeted with poststroke exercise, including aerobic capacity, strength and balance. However, following the recommended frequency and duration of each component separately can take a long time and lead to fatigue in people with stroke. Therefore, finding types of exercise that target multiple components of fitness all together is valuable.Reactive balance training (RBT) is a novel type of exercise where individuals repeatedly lose their balance in order to practise balance reactions. When people do RBT, they increase their heart rate and exert forces with their leg muscles which could improve aerobic fitness and muscle strength, respectively. This means that RBT could have the potential to improve multiple components of fitness, simultaneously. METHODS AND ANALYSIS This is a randomised controlled non-inferiority trial with internal pilot study. Participants with chronic stroke will be randomly assigned to one of two groups: (1) RBT or (2) aerobic and strength training (AST). Participants in both groups will complete 1 hour of exercise, three times/week for 12 weeks. The primary objective is to determine the effect of RBT on aerobic capacity and knee muscles' strength. The secondary objective is to determine the effects of RBT and AST on balance control and balance confidence. We expect to find that RBT is superior to AST in terms of improving balance control and balance confidence, yet not inferior to AST in terms of its effects on aerobic capacity and strength. ETHICS AND DISSEMINATION Research ethics approval has been received. Results will be disseminated directly to study participants at the end of the trial, and to other stakeholders via publication in a peer-reviewed journal. TRIAL REGISTRATION NUMBER NCT04042961.
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Affiliation(s)
- Azadeh Barzideh
- Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Susan Marzolini
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Cynthia Danells
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - David Jagroop
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Andrew H Huntley
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Elizabeth L Inness
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Sunita Mathur
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | | | - Paul Oh
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Avril Mansfield
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Physical Therapy, University of Toronto, Toronto, Ontario, Canada
- Evaulative Clinical Sciences, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
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Esmaeili V, Juneau A, Dyer JO, Lamontagne A, Kairy D, Bouyer L, Duclos C. Intense and unpredictable perturbations during gait training improve dynamic balance abilities in chronic hemiparetic individuals: a randomized controlled pilot trial. J Neuroeng Rehabil 2020; 17:79. [PMID: 32552850 PMCID: PMC7298869 DOI: 10.1186/s12984-020-00707-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/08/2020] [Indexed: 11/26/2022] Open
Abstract
Background Previous studies have assessed the effects of perturbation training on balance after stroke. However, the perturbations were either applied while standing or were small in amplitude during gait, which is not representative of the most common fall conditions. The perturbations were also combined with other challenges such as progressive increases in treadmill speed. Objective To determine the benefit of treadmill training with intense and unpredictable perturbations compared to treadmill walking-only training for dynamic balance and gait post-stroke. Methods Twenty-one individuals post-stroke with reduced dynamic balance abilities, with or without a history of fall and ability to walk on a treadmill without external support or a walking aid for at least 1 min were allocated to either an unpredictable gait perturbation (Perturb) group or a walking-only (NonPerturb) group through covariate adaptive randomization. Nine training sessions were conducted over 3 weeks. NonPerturb participants only walked on the treadmill but were offered perturbation training after the control intervention. Pre- and post-training evaluations included balance and gait abilities, maximal knee strength, balance confidence and community integration. Six-week phone follow-ups were conducted for balance confidence and community integration. Satisfaction with perturbation training was also assessed. Results With no baseline differences between groups (p > 0.075), perturbation training yielded large improvements in most variables in the Perturb (p < 0.05, Effect Size: ES > .46) group (n = 10) and the NonPerturb (p ≤ .089, ES > .45) group (n = 7 post-crossing), except for maximal strength (p > .23) in the NonPerturb group. Walking-only training in the NonPerturb group (n = 8, pre-crossing) mostly had no effect (p > .292, ES < .26), except on balance confidence (p = .063, ES = .46). The effects of the gait training were still present on balance confidence and community integration at follow-up. Satisfaction with the training program was high. Conclusion Intense and unpredictable gait perturbations have the potential to be an efficient component of training to improve balance abilities and community integration in individuals with chronic stroke. Retrospective registration: ClinicalTrials.gov. March 18th, 2020. Identifier: NCT04314830.
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Affiliation(s)
- Vahid Esmaeili
- School of Rehabilitation, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.,Centre for Interdisciplinary Research in Rehabilitation-Institut Universitaire sur la Réadaptation en Déficience Physique de Montréal, in CIUSSS du Centre-Sud-de-l'ile-de-Montréal, Montreal, Canada
| | - Andréanne Juneau
- Centre for Interdisciplinary Research in Rehabilitation-Institut Universitaire sur la Réadaptation en Déficience Physique de Montréal, in CIUSSS du Centre-Sud-de-l'ile-de-Montréal, Montreal, Canada.,Lethbridge-Layton-MacKay Rehabilitation Centre, Montréal, Canada
| | - Joseph-Omer Dyer
- School of Rehabilitation, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montreal, Quebec, H3C 3J7, Canada
| | - Anouk Lamontagne
- Centre for Interdisciplinary Research in Rehabilitation-Institut Universitaire sur la Réadaptation en Déficience Physique de Montréal, in CIUSSS du Centre-Sud-de-l'ile-de-Montréal, Montreal, Canada.,School of Physical and Occupationnal Therapy, McGill University, Montréal, Canada
| | - Dahlia Kairy
- School of Rehabilitation, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montreal, Quebec, H3C 3J7, Canada.,Centre for Interdisciplinary Research in Rehabilitation-Institut Universitaire sur la Réadaptation en Déficience Physique de Montréal, in CIUSSS du Centre-Sud-de-l'ile-de-Montréal, Montreal, Canada
| | - Laurent Bouyer
- Department of Rehabilitation, Faculty of Medicine, Université Laval and Center for Interdisciplinary Research in Rehabilitation and Social Integration, CIUSSS-CN, Quebec City, Canada
| | - Cyril Duclos
- School of Rehabilitation, Université de Montréal, P.O. Box 6128, Station Centre-Ville, Montreal, Quebec, H3C 3J7, Canada. .,Centre for Interdisciplinary Research in Rehabilitation-Institut Universitaire sur la Réadaptation en Déficience Physique de Montréal, in CIUSSS du Centre-Sud-de-l'ile-de-Montréal, Montreal, Canada.
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Denissen S, Staring W, Kunkel D, Pickering RM, Lennon S, Geurts ACH, Weerdesteyn V, Verheyden GSAF. Interventions for preventing falls in people after stroke. Cochrane Database Syst Rev 2019; 10:CD008728. [PMID: 31573069 PMCID: PMC6770464 DOI: 10.1002/14651858.cd008728.pub3] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Falls are one of the most common complications after stroke, with a reported incidence ranging between 7% in the first week and 73% in the first year post stroke. This is an updated version of the original Cochrane Review published in 2013. OBJECTIVES To evaluate the effectiveness of interventions aimed at preventing falls in people after stroke. Our primary objective was to determine the effect of interventions on the rate of falls (number of falls per person-year) and the number of fallers. Our secondary objectives were to determine the effects of interventions aimed at preventing falls on 1) the number of fall-related fractures; 2) the number of fall-related hospital admissions; 3) near-fall events; 4) economic evaluation; 5) quality of life; and 6) adverse effects of the interventions. SEARCH METHODS We searched the trials registers of the Cochrane Stroke Group (September 2018) and the Cochrane Bone, Joint and Muscle Trauma Group (October 2018); the Cochrane Central Register of Controlled Trials (CENTRAL; 2018, Issue 9) in the Cochrane Library; MEDLINE (1950 to September 2018); Embase (1980 to September 2018); CINAHL (1982 to September 2018); PsycINFO (1806 to August 2018); AMED (1985 to December 2017); and PEDro (September 2018). We also searched trials registers and checked reference lists. SELECTION CRITERIA Randomised controlled trials of interventions where the primary or secondary aim was to prevent falls in people after stroke. DATA COLLECTION AND ANALYSIS Two review authors (SD and WS) independently selected studies for inclusion, assessed trial quality and risk of bias, and extracted data. We resolved disagreements through discussion, and contacted study authors for additional information where required. We used a rate ratio and 95% confidence interval (CI) to compare the rate of falls (e.g. falls per person-year) between intervention and control groups. For risk of falling we used a risk ratio and 95% CI based on the number of people falling (fallers) in each group. We pooled results where appropriate and applied GRADE to assess the quality of the evidence. MAIN RESULTS We included 14 studies (of which six have been published since the first version of this review in 2013), with a total of 1358 participants. We found studies that investigated exercises, predischarge home visits for hospitalised patients, the provision of single lens distance vision glasses instead of multifocal glasses, a servo-assistive rollator and non-invasive brain stimulation for preventing falls.Exercise compared to control for preventing falls in people after strokeThe pooled result of eight studies showed that exercise may reduce the rate of falls but we are uncertain about this result (rate ratio 0.72, 95% CI 0.54 to 0.94, 765 participants, low-quality evidence). Sensitivity analysis for single exercise interventions, omitting studies using multiple/multifactorial interventions, also found that exercise may reduce the rate of falls (rate ratio 0.66, 95% CI 0.50 to 0.87, 626 participants). Sensitivity analysis for the effect in the chronic phase post stroke resulted in little or no difference in rate of falls (rate ratio 0.58, 95% CI 0.31 to 1.12, 205 participants). A sensitivity analysis including only studies with low risk of bias found little or no difference in rate of falls (rate ratio 0.88, 95% CI 0.65 to 1.20, 462 participants). Methodological limitations mean that we have very low confidence in the results of these sensitivity analyses.For the outcome of number of fallers, we are very uncertain of the effect of exercises compared to the control condition, based on the pooled result of 10 studies (risk ratio 1.03, 95% CI 0.90 to 1.19, 969 participants, very low quality evidence). The same sensitivity analyses as described above gives us very low certainty that there are little or no differences in number of fallers (single interventions: risk ratio 1.09, 95% CI 0.93 to 1.28, 796 participants; chronic phase post stroke: risk ratio 0.94, 95% CI 0.73 to 1.22, 375 participants; low risk of bias studies: risk ratio 0.96, 95% CI 0.77 to 1.21, 462 participants).Other interventions for preventing falls in people after strokeWe are very uncertain whether interventions other than exercise reduce the rate of falls or number of fallers. We identified very low certainty evidence when investigating the effect of predischarge home visits (rate ratio 0.85, 95% CI 0.43 to 1.69; risk ratio 1.48, 95% CI 0.71 to 3.09; 85 participants), provision of single lens distance glasses to regular wearers of multifocal glasses (rate ratio 1.08, 95% CI 0.52 to 2.25; risk ratio 0.74, 95% CI 0.47 to 1.18; 46 participants) and a servo-assistive rollator (rate ratio 0.44, 95% CI 0.16 to 1.21; risk ratio 0.44, 95% CI 0.16 to 1.22; 42 participants).Finally, transcranial direct current stimulation (tDCS) was used in one study to examine the effect on falls post stroke. We have low certainty that active tDCS may reduce the number of fallers compared to sham tDCS (risk ratio 0.30, 95% CI 0.14 to 0.63; 60 participants). AUTHORS' CONCLUSIONS At present there exists very little evidence about interventions other than exercises to reduce falling post stroke. Low to very low quality evidence exists that this population benefits from exercises to prevent falls, but not to reduce number of fallers.Fall research does not in general or consistently follow methodological gold standards, especially with regard to fall definition and time post stroke. More well-reported, adequately-powered research should further establish the value of exercises in reducing falling, in particular per phase, post stroke.
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Affiliation(s)
- Stijn Denissen
- KU LeuvenDepartment of Rehabilitation SciencesLeuvenBelgium
- Vrije Universiteit BrusselCIME Cognition and Modeling group, Center For Neurosciences (C4N)BrusselsBelgium1050
| | - Wouter Staring
- Radboud University Medical CentreDepartment of Rehabilitation, Donders Institute for Brain, Cognition and BehaviourNijmegenNetherlands
| | - Dorit Kunkel
- University of SouthamptonFaculty of Health SciencesSouthampton General HospitalMP 886, Tremona RoadSouthamptonUKSO16 6YD
| | - Ruth M Pickering
- University of SouthamptonDepartment of Public Health Sciences and Medical StatisticsSouthampton General Hospital, MP 805Tremona RoadSouthamptonUKSO16 6YD
| | - Sheila Lennon
- Flinders UniversityPhysiotherapy, College of Nursing & Health SciencesAdelaideAustralia
| | - Alexander CH Geurts
- Radboud University Medical CentreDepartment of Rehabilitation, Donders Institute for Brain, Cognition and BehaviourNijmegenNetherlands
- Sint Maartenskliniek ResearchNijmegenNetherlands
| | - Vivian Weerdesteyn
- Radboud University Medical CentreDepartment of Rehabilitation, Donders Institute for Brain, Cognition and BehaviourNijmegenNetherlands
- Sint Maartenskliniek ResearchNijmegenNetherlands
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Komisar V, McIlroy WE, Duncan CA. Individual, task, and environmental influences on balance recovery: a narrative review of the literature and implications for preventing occupational falls. IISE Trans Occup Ergon Hum Factors 2019. [DOI: 10.1080/24725838.2019.1634160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Vicki Komisar
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada.
| | | | - Carolyn A. Duncan
- Department of Kinesiology and Integrative Physiology, Michigan Technological University, Houghton, MI
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14
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Pigman J, Reisman DS, Pohlig RT, Wright TR, Crenshaw JR. The development and feasibility of treadmill-induced fall recovery training applied to individuals with chronic stroke. BMC Neurol 2019; 19:102. [PMID: 31128598 PMCID: PMC6534930 DOI: 10.1186/s12883-019-1320-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 04/29/2019] [Indexed: 12/03/2022] Open
Abstract
Background Exercise has failed to reduce falls in those with chronic stroke. A limitation of traditional exercise is that the motor responses needed to prevent a fall are not elicited (i.e. they lack processing specificity). Balance reactions often require compensatory steps. Therefore, interventions that target such steps have the potential to reduce falls. Computerized treadmills can deliver precise, repeatable, and challenging perturbations as part of a training protocol. The objective of this study was to develop and determine the feasibility of such training applied to those with chronic stroke. We developed the training to address specificity, appropriate duration and repetition, and progressive overloading and individualization. We hypothesized that our intervention would be acceptable, practical, safe, and demonstrate initial signs of efficacy. Methods In this single-arm study, thirteen individuals with chronic stroke (29–77 years old, 2–15 years post stroke) performed up to six training sessions using a computer-controlled treadmill. Each session had separate progressions focused on initial steps with the non-paretic or paretic limbs in response to anterior or posterior falls. Perturbation magnitudes were altered based on performance and tolerance. Acceptability was determined by adherence, or the number of sessions completed. Practicality was documented by the equipment, space, time, and personnel. Adverse events were documented to reflect safety. In order to determine the potential-efficacy of this training, we compared the proportion of successful recoveries and the highest perturbation magnitude achieved on the first and last sessions. Results The training was acceptable, as evident by 12/13 participants completing all 6 sessions. The protocol was practical, requiring one administrator, the treadmill, and a harness. The protocol was safe, as evident by no serious or unanticipated adverse events. The protocol demonstrated promising signs of efficacy. From the first to last sessions, participants had a higher proportion of successful recoveries and progressed to larger disturbances. Conclusions Using a computerized treadmill, we developed an approach to fall-recovery training in individuals with chronic stroke that was specific, considered duration and repetition, and incorporated progressive overloading and individualization. We demonstrated that this training was acceptable, practical, safe, and potentially beneficial for high-functioning individuals with chronic stroke. Trial registration Retrospectively registered at clinicaltrials.gov (NCT03638089) August 20, 2018.
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Affiliation(s)
- Jamie Pigman
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA
| | - Darcy S Reisman
- Department of Physical Therapy, University of Delaware, Newark, DE, USA
| | - Ryan T Pohlig
- Biostatistics Core Facility, University of Delaware, Newark, DE, USA
| | - Tamara R Wright
- Department of Physical Therapy, University of Delaware, Newark, DE, USA
| | - Jeremy R Crenshaw
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.
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15
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Schinkel-Ivy A, Huntley AH, Aqui A, Mansfield A. Does Perturbation-Based Balance Training Improve Control of Reactive Stepping in Individuals with Chronic Stroke? J Stroke Cerebrovasc Dis 2019; 28:935-943. [PMID: 30630753 DOI: 10.1016/j.jstrokecerebrovasdis.2018.12.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/02/2018] [Accepted: 12/10/2018] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Although perturbation-based balance training (PBT) may be effective in improving reactive balance control and/or reducing fall risk in individuals with stroke, the characteristics of reactive balance responses that improve following PBT have not yet been identified. This study aimed to determine if reactive stepping characteristics and timing in response to support-surface perturbations improved to a greater extent following PBT, compared to traditional balance training. MATERIALS AND METHODS This study represents a substudy of a multisite randomized controlled trial. Sixteen individuals with chronic stroke were randomly assigned to either perturbation-based or traditional balance training, and underwent 6-weeks of training as a part of the randomized controlled trial. Responses to support-surface perturbation were evaluated pre- and post-training, and 6-months post-training. Reactive stepping characteristics and timing were compared between sessions within each group, and between groups at post-training and 6-months post-training while controlling for each measure at the pre-training session. RESULTS The frequency of extra steps in response to perturbations decreased from pre-training to post-training for the PBT group, but not for the control group. CONCLUSIONS Improvements in reactive balance control were identified after PBT in individuals with chronic stroke. Findings provide insight into the mechanism by which PBT improves reactive balance control poststroke, and support the use of PBT in balance rehabilitation programs poststroke.
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Affiliation(s)
- Alison Schinkel-Ivy
- Robert J. Surtees Athletic Centre, School of Physical & Health Education, Nipissing University, North Bay, Ontario, Canada.
| | - Andrew H Huntley
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada
| | - Anthony Aqui
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada
| | - Avril Mansfield
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada; Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada; Evaluative Clinical Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
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16
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van Duijnhoven HJR, Roelofs JMB, den Boer JJ, Lem FC, Hofman R, van Bon GEA, Geurts ACH, Weerdesteyn V. Perturbation-Based Balance Training to Improve Step Quality in the Chronic Phase After Stroke: A Proof-of-Concept Study. Front Neurol 2018; 9:980. [PMID: 30524360 PMCID: PMC6261972 DOI: 10.3389/fneur.2018.00980] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 10/30/2018] [Indexed: 01/11/2023] Open
Abstract
Introduction: People with stroke often have impaired stepping responses following balance perturbations, which increases their risk of falling. Computer-controlled movable platforms are promising tools for delivering perturbation-based balance training under safe and standardized circumstances. Purpose: This proof-of-concept study aimed to identify whether a 5-week perturbation-based balance training program on a movable platform improves reactive step quality in people with chronic stroke. Materials and Methods: Twenty people with chronic stroke received a 5-week perturbation-based balance training (10 sessions, 45 min) on a movable platform. As the primary outcome, backward, and forward reactive step quality (i.e., leg angle at stepping-foot contact) was assessed with a lean-and-release (i.e., non-trained) task at pre-intervention, immediately post-intervention, and 6 weeks after intervention (follow-up). Additionally, reactive step quality was assessed on the movable platform in multiple directions, as well as, the percentage side steps upon sideward perturbations. To ensure that changes in the primary outcome could not solely be attributed to learning effects on the task due to repeated testing, 10 randomly selected participants received an additional pre-intervention assessment, 6 weeks prior to training. Clinical assesments included the 6-item Activity-specific Balance Confidence (6-ABC) scale, Berg Balance Scale (BBS), Trunk Impairment Scale (TIS), 10-Meter Walking Test (10-MWT), and Timed Up and Go-test (TUG). Results: After lean-and-release, we observed 4.3° and 2.8° greater leg angles at post compared to pre-intervention in the backward and forward direction, respectively. Leg angles also significantly improved in all perturbation directions on the movable platform. In addition, participants took 39% more paretic and 46% more non-paretic side steps. These effects were retained at follow-up. Post-intervention, BBS and TIS scores had improved. At follow-up, TIS and 6-ABC scores had significantly improved compared to pre-intervention. No significant changes were observed between the two pre-intervention assessments (n=10). Conclusion: A 5-week perturbation-based balance training on a movable platform appears to improve reactive step quality in people with chronic stroke. Importantly, improvements were retained after 6 weeks. Further controlled studies in larger patient samples are needed to verify these results and to establish whether this translates to fewer falls in daily life. Trial registration: The Netherlands National Trial Register (NTR3804). http://www.trialregister.nl/trialreg/admin/rctview.aspTC=3804.
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Affiliation(s)
- Hanneke J R van Duijnhoven
- Department of Rehabilitation, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Jolanda M B Roelofs
- Department of Rehabilitation, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Jasper J den Boer
- Department of Rehabilitation, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Frits C Lem
- Department of Rehabilitation, Sint Maartenskliniek, Nijmegen, Netherlands
| | - Rifka Hofman
- Rehabilitation Medical Centre Klimmendaal, Arnhem, Netherlands
| | - Geert E A van Bon
- Department of Rehabilitation, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Alexander C H Geurts
- Department of Rehabilitation, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands.,Research, Sint Maartenskliniek, Nijmegen, Netherlands
| | - Vivian Weerdesteyn
- Department of Rehabilitation, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands.,Research, Sint Maartenskliniek, Nijmegen, Netherlands
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17
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Mansfield A, Aqui A, Danells CJ, Knorr S, Centen A, DePaul VG, Schinkel-Ivy A, Brooks D, Inness EL, Mochizuki G. Does perturbation-based balance training prevent falls among individuals with chronic stroke? A randomised controlled trial. BMJ Open 2018; 8:e021510. [PMID: 30121600 PMCID: PMC6104758 DOI: 10.1136/bmjopen-2018-021510] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 06/06/2018] [Accepted: 07/17/2018] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES No intervention has been shown to prevent falls poststroke. We aimed to determine if perturbation-based balance training (PBT) can reduce falls in daily life among individuals with chronic stroke. DESIGN Assessor-blinded randomised controlled trial. SETTING Two academic hospitals in an urban area. INTERVENTIONS Participants were allocated using stratified blocked randomisation to either 'traditional' balance training (control) or PBT. PBT focused on improving responses to instability, whereas traditional balance training focused on maintaining stability during functional tasks. Training sessions were 1 hour twice/week for 6 weeks. Participants were also invited to complete 2 'booster' training sessions during the follow-up. PARTICIPANTS Eighty-eight participants with chronic stroke (>6 months poststroke) were recruited and randomly allocated one of the two interventions. Five participants withdrew; 42 (control) and 41 (PBT group) were included in the analysis. PRIMARY AND SECONDARY OUTCOME MEASURES The primary outcome was rate of falls in the 12 months post-training. Negative binomial regression was used to compare fall rates between groups. Secondary outcomes were measures of balance, mobility, balance confidence, physical activity and social integration. RESULTS PBT participants reported 53 falls (1.45 falls/person-year) and control participants reported 64 falls (1.72 falls/person-year; rate ratio: 0.85(0.42 to 1.69); p=0.63). Per-protocol analysis included 32 PBT and 34 control participants who completed at least 10/12 initial training sessions and 1 booster session. Within this subset, PBT participants reported 32 falls (1.07 falls/person-year) and control participants reported 57 falls (1.75 falls/person-year; rate ratio: 0.62(0.29 to 1.30); p=0.20). PBT participants had greater improvement in reactive balance control than the control group, and these improvements were sustained 12 months post-training. There were no intervention-related serious adverse effects. CONCLUSIONS The results are inconclusive. PBT may help to prevent falls in daily life poststroke, but ongoing training may be required to maintain the benefits. TRIAL REGISTRATION NUMBER ISRCTN05434601; Results.
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Affiliation(s)
- Avril Mansfield
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Evaluative Clinical Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Anthony Aqui
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Cynthia J Danells
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Svetlana Knorr
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Andrew Centen
- Evaluative Clinical Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Vincent G DePaul
- School of Rehabilitation Therapy, Queen’s University, Kingston, Ontario, Canada
| | - Alison Schinkel-Ivy
- Schulich School of Education – School of Physical and Health Education, Nipissing University, North Bay, Ontario, Canada
| | - Dina Brooks
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Elizabeth L Inness
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - George Mochizuki
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Evaluative Clinical Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
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18
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Krause A, Freyler K, Gollhofer A, Stocker T, Brüderlin U, Colin R, Töpfer H, Ritzmann R. Neuromuscular and Kinematic Adaptation in Response to Reactive Balance Training - a Randomized Controlled Study Regarding Fall Prevention. Front Physiol 2018; 9:1075. [PMID: 30131722 PMCID: PMC6090079 DOI: 10.3389/fphys.2018.01075] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/18/2018] [Indexed: 12/02/2022] Open
Abstract
Slips and stumbles are main causes of falls and result in serious injuries. Balance training is widely applied for preventing falls across the lifespan. Subdivided into two main intervention types, biomechanical characteristics differ amongst balance interventions tailored to counteract falls: conventional balance training (CBT) referring to a balance task with a static ledger pivoting around the ankle joint versus reactive balance training (RBT) using externally applied perturbations to deteriorate body equilibrium. This study aimed to evaluate the efficacy of reactive, slip-simulating RBT compared to CBT in regard to fall prevention and to detect neuromuscular and kinematic dependencies. In a randomized controlled trial, 38 participants were randomly allocated either to CBT or RBT. To simulate stumbling scenarios, postural responses were assessed to posterior translations in gait and stance perturbation before and after 4 weeks of training. Surface electromyography during short- (SLR), medium- (MLR), and long-latency response of shank and thigh muscles as well as ankle, knee, and hip joint kinematics (amplitudes and velocities) were recorded. Both training modalities revealed reduced angular velocity in the ankle joint (P < 0.05) accompanied by increased shank muscle activity in SLR (P < 0.05) during marching in place perturbation. During stance perturbation and marching in place perturbation, hip angular velocity was decreased after RBT (P from TTEST, Pt < 0.05) accompanied by enhanced thigh muscle activity (SLR, MLR) after both trainings (P < 0.05). Effect sizes were larger for the RBT-group during stance perturbation. Thus, both interventions revealed modified stabilization strategies for reactive balance recovery after surface translations. Characterized by enhanced reflex activity in the leg muscles antagonizing the surface translations, balance training is associated with improved neuromuscular timing and accuracy being relevant for postural control. This may result in more efficient segmental stabilization during fall risk situations, independent of the intervention modality. More pronounced modulations and higher effect sizes after RBT in stance perturbation point toward specificity of training adaptations, with an emphasis on the proximal body segment for RBT. Outcomes underline the benefits of balance training with a clear distinction between RBT and CBT being relevant for training application over the lifespan.
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Affiliation(s)
- Anne Krause
- Department of Sport Science, University of Freiburg, Freiburg, Germany.,Institute of Training and Computer Science in Sport, German Sport University Cologne, Cologne, Germany
| | - Kathrin Freyler
- Department of Sport Science, University of Freiburg, Freiburg, Germany
| | - Albert Gollhofer
- Department of Sport Science, University of Freiburg, Freiburg, Germany
| | - Thomas Stocker
- Department of Mechatronics, University of Applied Sciences, Esslingen, Germany
| | - Uli Brüderlin
- Department of Mechatronics, University of Applied Sciences, Esslingen, Germany
| | - Ralf Colin
- Department of Mechatronics, University of Applied Sciences, Esslingen, Germany
| | - Harald Töpfer
- Department of Mechatronics, University of Applied Sciences, Esslingen, Germany
| | - Ramona Ritzmann
- Department of Sport Science, University of Freiburg, Freiburg, Germany
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19
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Schinkel-Ivy A, Aqui A, Danells CJ, Mansfield A. Characterization of Reactions to Laterally Directed Perturbations in People With Chronic Stroke. Phys Ther 2018; 98:585-594. [PMID: 29566223 DOI: 10.1093/ptj/pzy039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 03/15/2018] [Indexed: 02/09/2023]
Abstract
BACKGROUND Reactive balance control is often impaired poststroke. Studies addressing responses to laterally directed perturbations in this population are currently lacking. Given that stroke-related motor impairments are unilateral, a better understanding of reactive balance responses to these types of perturbations is critical. OBJECTIVE This study aimed to quantify differences in reactive balance control in response to laterally directed perturbations in people with chronic stroke, based on perturbation direction and ability to step with either limb. DESIGN This study used a cross-sectional design. METHODS Participants with chronic stroke (N = 19) were divided into groups representing their ability to step with either limb, based on performance on a reactive balance task in a baseline assessment. The preferred stepping limb was also identified during this assessment. Each participant then underwent a series of laterally directed perturbations on a motion platform. Behavioral measures were compared between platform direction and group. RESULTS Trials with extra steps, step initiation with the preferred limb, and crossover steps were more common with platform motion toward the preferred limb compared to the nonpreferred limb; the latter effect was only observed for participants with an impaired ability to step with either limb. Side-step sequences were more common in those able to step with either limb when the platform moved toward the preferred limb. LIMITATIONS The participant sample was likely higher functioning than the general population of stroke survivors due to equipment constraints. Additionally, participants may have developed strategies to use the platform's motion characteristics to aid with balance recovery. CONCLUSIONS These findings provide an indication of responses to laterally directed perturbations in people with chronic stroke and may help inform strategies for improving reactive balance control during stroke rehabilitation.
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Affiliation(s)
- Alison Schinkel-Ivy
- School of Physical & Health Education, Nipissing University, 100 College Dr, Box 5002, North Bay, Ontario, Canada P1B 8L7
| | - Anthony Aqui
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Cynthia J Danells
- Toronto Rehabilitation Institute, University Health Network; and Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Avril Mansfield
- Toronto Rehabilitation Institute, University Health Network; Department of Physical Therapy, University of Toronto; and Evaluative Clinical Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
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20
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Inkol KA, Huntley AH, Vallis LA. Repeated Exposure to Forward Support-Surface Perturbation During Overground Walking Alters Upper-Body Kinematics and Step Parameters. J Mot Behav 2018; 51:318-330. [PMID: 29856268 DOI: 10.1080/00222895.2018.1474336] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Locomotion requires both proactive and reactive control strategies to maintain balance. The current study aimed to: (i) ascertain upper body postural responses following first exposure to a forward (slip) support-surface perturbation; (ii) investigate effects of repeated perturbation exposure; (iii) establish relationships between arms and other response components (trunk; center of mass control). Young adults (N = 11) completed 14 walking trials on a robotic platform; six elicited a slip response. Kinematic analyses were focused on extrapolated center of mass position (xCoM), bilateral upper- and forearm elevation velocity, trunk angular velocity, and step parameters. Results demonstrated that postural responses evoked in the first slip exposure were the largest in magnitude (e.g., reduced backward stability, altered reactive stepping, etc.) and preceded by anticipatory anterior adjustments of xCoM. In relation to the perturbed leg, the large contra- and ipsilateral arm responses observed (in first exposure) were characteristically asymmetric and scaled to the degree of peak trunk extension. With repeated exposure, xCoM anticipatory adjustments were altered and in turn, reduced posterior xCoM motion occurred following a slip (changes plateaued at second exposure). The few components of the slip response that persisted across multiple exposures did so at a lesser magnitude (e.g., step length and arms).
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Affiliation(s)
- Keaton A Inkol
- a Department of Human Health and Nutritional Sciences , University of Guelph , Ontario , Canada
| | - Andrew H Huntley
- b Toronto Rehabilitation Institute, University Health Network , Toronto , Canada
| | - Lori Ann Vallis
- a Department of Human Health and Nutritional Sciences , University of Guelph , Ontario , Canada
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21
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Xu T, O'loughlin K, Clemson L, Lannin NA, Koh G, Dean C. Therapists' perspectives on adapting the Stepping On falls prevention programme for community-dwelling stroke survivors in Singapore. Disabil Rehabil 2018; 41:2528-2537. [PMID: 29774801 DOI: 10.1080/09638288.2018.1471168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Purpose: This study investigates the perspectives of rehabilitation therapists on the implementation of fall prevention programmes with community-dwelling stroke survivors in the Singapore context, and elicits recommendations to adapt the Stepping On programme with stroke survivors. Method: Qualitative data were elicited during 4 focus groups with 23 rehabilitation therapists (15 occupational therapists [OTs]; 8 physiotherapists [PTs]) who had received training to deliver the original Stepping On programme, and had experienced delivery of fall-prevention intervention programmes locally. Collected data were analysed using thematic analysis method. Results: Three themes emerged from the focus groups describing: (a) limitations of existing falls prevention intervention for stroke clients; (b) the need to adapt the Stepping On programme to use with stroke clients; and (c) challenges in implementing fall prevention programmes in the stroke context. A series of new components were suggested to be included as part of the Stepping On after stroke (SOAS) programme, including involvement of family members and caregivers, and tailored community reintegration sessions (such as taking public transport and shopping). Conclusions: Rehabilitation therapists describe challenges in addressing fall prevention within a stroke context, and findings highlight the need for a structured, stroke-specific fall prevention programme rather than a more general approach to education and training. Contextual components identified provide valuable inputs towards the development of a culturally relevant fall prevention programme for stroke survivors in Singapore. Implications for Rehabilitation Stroke survivors living in the community are at a high risk of falls. A structured and culturally relevant fall prevention programme for community-living stroke survivors is needed. Falls prevention for community-living stroke survivors should be multi-dimensional and targeting the modifiable risk factors for falls in this group. Both stroke survivors and caregivers should be involved in any fall prevention after stroke programmes.
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Affiliation(s)
- Tianma Xu
- Faculty of Health Sciences, University of Sydney , Sydney , Australia.,Health and Social Sciences Cluster, Singapore Institute of Technology , Singapore
| | - Kate O'loughlin
- Faculty of Health Sciences, University of Sydney , Sydney , Australia
| | - Lindy Clemson
- Faculty of Health Sciences, University of Sydney , Sydney , Australia
| | - Natasha A Lannin
- Department of Community and Clinical Allied Health, La Trobe Clinical School La Trobe University , Melbourne , Australia
| | - Gerald Koh
- Saw Swee Hock School of Public Health, National University of Singapore , Singapore
| | - Catherine Dean
- Department of Health Professions Faculty of Medicine and Health Sciences, Macquarie University , Sydney , Australia
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22
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Effects of speed and direction of perturbation on electroencephalographic and balance responses. Exp Brain Res 2018; 236:2073-2083. [PMID: 29752486 DOI: 10.1007/s00221-018-5284-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 05/07/2018] [Indexed: 10/16/2022]
Abstract
The modulation of perturbation-evoked potential (PEP) N1 as a function of different biomechanical characteristics of perturbation has been investigated before. However, it remains unknown whether the PEP N1 modulation contributes to the shaping of the functional postural response. To improve this understanding, we examined the modulation of functional postural response in relation to the PEP N1 response in ten healthy young subjects during unpredictable perturbations to their upright stance-translations of the support surface in a forward or backward direction at two different amplitudes of constant speed. Using independent components from the fronto-central region, obtained from subject-specific head models created from the MRI, our results show that the latency of onset of the functional postural response after the PEP N1 response was faster for forward than backward perturbations at a constant speed but was not affected by the speed of perturbation. Further, our results reinforce some of the previous findings that suggested that the N1 peak amplitude and peak latency are both modulated by the speed of perturbation but not by the direction of the perturbation. Our results improve the understanding of the relation between characteristics of perturbation and the neurophysiology of reactive balance control and may have implications for the design of brain-machine interfaces for populations with a higher risk of falls.
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Naidu A, Brown D, Roth E. A Challenge-Based Approach to Body Weight-Supported Treadmill Training Poststroke: Protocol for a Randomized Controlled Trial. JMIR Res Protoc 2018; 7:e118. [PMID: 29724706 PMCID: PMC5958283 DOI: 10.2196/resprot.9308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/22/2018] [Accepted: 02/11/2018] [Indexed: 11/23/2022] Open
Abstract
Background Body weight support treadmill training protocols in conjunction with other modalities are commonly used to improve poststroke balance and walking function. However, typical body weight support paradigms tend to use consistently stable balance conditions, often with handrail support and or manual assistance. Objective In this paper, we describe our study protocol, which involved 2 unique body weight support treadmill training paradigms of similar training intensity that integrated dynamic balance challenges to help improve ambulatory function post stroke. The first paradigm emphasized walking without any handrails or manual assistance, that is, hands-free walking, and served as the control group, whereas the second paradigm incorporated practicing 9 essential challenging mobility skills, akin to environmental barriers encountered during community ambulation along with hands-free walking (ie hands-free + challenge walking). Methods We recruited individuals with chronic poststroke hemiparesis and randomized them to either group. Participants trained for 6 weeks on a self-driven, robotic treadmill interface that provided body weight support and a safe gait-training environment. We assessed participants at pre-, mid- and post 6 weeks of intervention-training, with a 6-month follow-up. We hypothesized greater walking improvements in the hands-free + challenge walking group following training because of increased practice opportunity of essential mobility skills along with hands-free walking. Results We assessed 77 individuals with chronic hemiparesis, and enrolled and randomized 30 individuals poststroke for our study (hands-free group=19 and hands-free + challenge walking group=20) from June 2012 to January 2015. Data collection along with 6-month follow-up continued until January 2016. Our primary outcome measure is change in comfortable walking speed from pre to post intervention for each group. We will also assess feasibility, adherence, postintervention efficacy, and changes in various exploratory secondary outcome measures. Additionally, we will also assess participant responses to a study survey, conducted at the end of training week, to gauge each group's training experiences. Conclusions Our treadmill training paradigms, and study protocol represent advances in standardized approaches to selecting body weight support levels without the necessity for using handrails or manual assistance, while progressively providing dynamic challenges for improving poststroke ambulatory function during rehabilitation. Trial Registration ClinicalTrials.gov NCT02787759; https://clinicaltrials.gov/ct2/show/NCT02787759 (Archived by Webcite at http://www.webcitation.org/6yJZCrIea)
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Affiliation(s)
- Avantika Naidu
- Department of Physical Therapy and Occupational Therapy, University of Alabama at Birmingham, Birmingham, AL, United States
| | - David Brown
- Department of Physical Therapy and Occupational Therapy, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Elliot Roth
- Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, United States
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24
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Gerards MH, McCrum C, Mansfield A, Meijer K. Perturbation-based balance training for falls reduction among older adults: Current evidence and implications for clinical practice. Geriatr Gerontol Int 2017; 17:2294-2303. [PMID: 28621015 PMCID: PMC5763315 DOI: 10.1111/ggi.13082] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 03/02/2017] [Accepted: 03/28/2017] [Indexed: 01/16/2023]
Abstract
Falls are a leading cause of injury, hospitalization and even death among older adults. Although various strength and balance exercise interventions have shown moderate reductions in falls incidence among healthy older adults, no significant falls incidence improvements have been consistently seen in frail older adults or in patient groups with an increased falls risk (e.g. people with Parkinson's disease and stroke). This might be due to a lack of task specificity of previous exercise interventions to the recovery actions required to prevent a fall. Perturbation-based balance training (PBT) is an emerging task-specific intervention that aims to improve reactive balance control after destabilizing perturbations in a safe and controlled environment. Although early studies were carried out predominantly in research laboratory settings, work in clinical settings with various patient groups has been proliferating. A systematic search of recent PBT studies showed a significant reduction of falls incidence among healthy older adults and certain patient groups (e.g. people with Parkinson's disease and stroke), with clinically relevant reductions in frail older adults. The most practical methods in clinical settings might be treadmill-based systems and therapist-applied perturbations, and PBT that incorporates multiple perturbation types and directions might be of most benefit. Although more controlled studies with long-term follow-up periods are required to better elucidate the effects of PBT on falls incidence, PBT appears to be a feasible and effective approach to falls reduction among older adults in clinical settings. Geriatr Gerontol Int 2017; 17: 2294-2303..
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Affiliation(s)
- Marissa H.G. Gerards
- Department of Human Movement ScienceNUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+Maastrichtthe Netherlands
- azM Herstelzorg Center for Geriatric Rehabilitation and CareMaastrichtthe Netherlands
| | - Christopher McCrum
- Department of Human Movement ScienceNUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+Maastrichtthe Netherlands
- Institute of Movement and Sport GerontologyGerman Sport University CologneCologneGermany
| | - Avril Mansfield
- Toronto Rehabilitation InstituteUniversity Health NetworkTorontoOntarioCanada
- Rehabilitation Sciences InstituteUniversity of TorontoTorontoOntarioCanada
- Department of Physical TherapyUniversity of TorontoTorontoOntarioCanada
- Evaluative Clinical Sciences, Hurvitz Brain Sciences Research ProgramSunnybrook Research InstituteTorontoOntarioCanada
| | - Kenneth Meijer
- Department of Human Movement ScienceNUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center+Maastrichtthe Netherlands
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25
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Validation of simplified centre of mass models during gait in individuals with chronic stroke. Clin Biomech (Bristol, Avon) 2017; 48:97-102. [PMID: 28806592 PMCID: PMC5595533 DOI: 10.1016/j.clinbiomech.2017.07.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 06/22/2017] [Accepted: 07/30/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND The feasibility of using a multiple segment (full-body) kinematic model in clinical gait assessment is difficult when considering obstacles such as time and cost constraints. While simplified gait models have been explored in healthy individuals, no such work to date has been conducted in a stroke population. The aim of this study was to quantify the errors of simplified kinematic models for chronic stroke gait assessment. METHODS Sixteen individuals with chronic stroke (>6months), outfitted with full body kinematic markers, performed a series of gait trials. Three centre of mass models were computed: (i) 13-segment whole-body model, (ii) 3 segment head-trunk-pelvis model, and (iii) 1 segment pelvis model. Root mean squared error differences were compared between models, along with correlations to measures of stroke severity. FINDINGS Error differences revealed that, while both models were similar in the mediolateral direction, the head-trunk-pelvis model had less error in the anteroposterior direction and the pelvis model had less error in the vertical direction. There was some evidence that the head-trunk-pelvis model error is influenced in the mediolateral direction for individuals with more severe strokes, as a few significant correlations were observed between the head-trunk-pelvis model and measures of stroke severity. INTERPRETATION These findings demonstrate the utility and robustness of the pelvis model for clinical gait assessment in individuals with chronic stroke. Low error in the mediolateral and vertical directions is especially important when considering potential stability analyses during gait for this population, as lateral stability has been previously linked to fall risk.
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26
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Mansfield A, Schinkel-Ivy A, Danells CJ, Aqui A, Aryan R, Biasin L, DePaul VG, Inness EL. Does Perturbation Training Prevent Falls after Discharge from Stroke Rehabilitation? A Prospective Cohort Study with Historical Control. J Stroke Cerebrovasc Dis 2017; 26:2174-2180. [PMID: 28579506 DOI: 10.1016/j.jstrokecerebrovasdis.2017.04.041] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 04/29/2017] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Individuals with stroke fall frequently, and no exercise intervention has been shown to prevent falls post stroke. Perturbation-based balance training (PBT), which involves practicing reactions to instability, shows promise for preventing falls in older adults and individuals with Parkinson's disease. This study aimed to determine if PBT during inpatient stroke rehabilitation can prevent falls after discharge into the community. METHODS Individuals with subacute stroke completed PBT as part of routine inpatient rehabilitation (n = 31). Participants reported falls experienced in daily life for up to 6 months post discharge. Fall rates were compared to a matched historical control group (HIS) who did not complete PBT during inpatient rehabilitation. RESULTS Five of 31 PBT participants, compared to 15 of 31 HIS participants, reported at least 1 fall. PBT participants reported 10 falls (.84 falls per person per year) whereas HIS participants reported 31 falls (2.0 falls per person per year). When controlled for follow-up duration and motor impairment, fall rates were lower in the PBT group than the HIS group (rate ratio: .36 [.15, .79]; P = .016). CONCLUSIONS These findings suggest that PBT is promising for reducing falls post stroke. While this was not a randomized controlled trial, this study may provide sufficient evidence for implementing PBT in stroke rehabilitation practice.
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Affiliation(s)
- Avril Mansfield
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada; Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada; Sunnybrook Research Institute, Toronto, Ontario, Canada.
| | - Alison Schinkel-Ivy
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada; School of Physical and Health Education, Nipissing University, North Bay, Ontario, Canada
| | - Cynthia J Danells
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada; Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Anthony Aqui
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
| | - Raabeae Aryan
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada; Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada
| | - Louis Biasin
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada; Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Vincent G DePaul
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada; School of Rehabilitation Therapy, Queen's University, Kingston, Ontario, Canada
| | - Elizabeth L Inness
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada; Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
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27
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Reactive Stepping After Stroke: Determinants of Time to Foot Off in the Paretic and Nonparetic Limb. J Neurol Phys Ther 2017; 40:196-202. [PMID: 27152558 DOI: 10.1097/npt.0000000000000132] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND PURPOSE Impaired features of reactive stepping, specifically delays in the early time to foot off (TFO) phase, are associated with increased fall rates after stroke. This study aimed to determine differences in, and determinants of, paretic and nonparetic limb TFO, and to determine whether both paretic and nonparetic TFO were associated with perturbation-evoked falls. METHODS Retrospective chart review of 105 individuals with stroke was performed within an inpatient rehabilitation setting; each had received a standardized assessment of reactive balance control (in response to a perturbation) at time of discharge. RESULTS There were no significant differences in paretic (351 ms) and nonparetic (365 ms) TFO. The capacity to maximally load the nonparetic limb, the amplitude of the perturbation, and the capacity to load the paretic limb were all negatively associated with paretic step TFO, explaining 23.8% of the variance. The amplitude of the perturbation and the preperturbation load under the nonparetic stepping limb were, respectively, negatively and positively associated with nonparetic step TFO, explaining 22.7% of the variance. The likelihood of a perturbation-evoked fall was associated with mean nonparetic limb TFO but not paretic limb TFO. DISCUSSION AND CONCLUSIONS Unique stroke-related impairments of dynamic balance control and limb-load asymmetry may differentially influence paretic and nonparetic reactive step TFO, in response to a loss of balance. The amplitude of the perturbation influences reactive step TFO in both limbs. The results of the current study have implications for the future development of standardized clinical assessment methodologies and training strategies to evaluate and remediate reactive stepping and reduce fall risk.Video Abstract available for more insights from the authors (see Supplemental Digital Content 1, http://links.lww.com/JNPT/A133).
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28
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Han P, Zhang W, Kang L, Ma Y, Fu L, Jia L, Yu H, Chen X, Hou L, Wang L, Yu X, Kohzuki M, Guo Q. Clinical Evidence of Exercise Benefits for Stroke. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1000:131-151. [PMID: 29098620 DOI: 10.1007/978-981-10-4304-8_9] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Even though stroke is the third, not the first, most common cause of disability-adjusted life years in developed countries, it is one of the most expensive to treat. Part of the expense is due to secondary problems in the post-stroke period including: cognition, memory, attention span, pain, sensation loss, psychological issues, and problems with mobility and balance. Research has identified that exercise has both positive physical and psychosocial effects for post-stroke patients. Therefore, this scientific statement provides an overview on exercise rehabilitation for post-stroke patients.We will use systematic literature reviews, clinical and epidemiology reports, published morbidity and mortality studies, clinical and public health guidelines, patient files, and authoritative statements to support this overview.Evidence clearly supports the use of various kinds of exercise training (e.g., aerobic, strength, flexibility, neuromuscular, and traditional Chinese exercise) for stroke survivors. Aerobic exercise, the main form of cardiac rehabilitation, may play an important role in improving aerobic fitness, cardiovascular fitness, cognitive abilities, walking speed and endurance, balance, quality of life, mobility, and other health outcomes among stroke patients. Strength exercise, included in national stroke guidelines and recommended for general health promotion for stroke survivors, can lead to improvements in functionality, psychosocial aspects, and quality of life for post-stroke patients. Flexibility exercises can relieve muscle spasticity problems, improve motor function, range of motion, and prevent contractures. Stretching exercises can also prevent joint contractures, muscle shortening, decrease spasticity, reduce joint stiffness and improve a post-stroke patient's overall function. Neuromuscular exercises can improve activities of daily living (ADL) through coordination and balance activities. Traditional Chinese exercises are used to improve walking and balance ability as well as increase muscle strength, which is important for post-stroke patients.The present evidence strongly supports the power of exercise for post-stroke patients, which in this study combined aerobic exercises, strength training, flexibility exercises, neuromuscular exercises, and traditional Chinese exercises. This research can encourage post-stroke survivors to consider the importance of exercise in the rehabilitation process.
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Affiliation(s)
- Peipei Han
- Department of Rehabilitation Medicine, TEDA International Cardiovascular Hospital, Cardiovascular Clinical College of Tianjin Medical University, Tianjin, China.,Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Wen Zhang
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Li Kang
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Yixuan Ma
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Liyuan Fu
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Liye Jia
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Hairui Yu
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Xiaoyu Chen
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Lin Hou
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Lu Wang
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Xing Yu
- Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China
| | - Masahiro Kohzuki
- Department of Internal Medicine and Rehabilitation Science, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Qi Guo
- Department of Rehabilitation Medicine, TEDA International Cardiovascular Hospital, Cardiovascular Clinical College of Tianjin Medical University, Tianjin, China. .,Department of Rehabilitation Medicine, Tianjin Medical University, Tianjin, China.
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Freyler K, Krause A, Gollhofer A, Ritzmann R. Specific Stimuli Induce Specific Adaptations: Sensorimotor Training vs. Reactive Balance Training. PLoS One 2016; 11:e0167557. [PMID: 27911944 PMCID: PMC5135127 DOI: 10.1371/journal.pone.0167557] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 11/16/2016] [Indexed: 11/19/2022] Open
Abstract
Typically, balance training has been used as an intervention paradigm either as static or as reactive balance training. Possible differences in functional outcomes between the two modalities have not been profoundly studied. The objective of the study was to investigate the specificity of neuromuscular adaptations in response to two balance intervention modalities within test and intervention paradigms containing characteristics of both profiles: classical sensorimotor training (SMT) referring to a static ledger pivoting around the ankle joint vs. reactive balance training (RBT) using externally applied perturbations to deteriorate body equilibrium. Thirty-eight subjects were assigned to either SMT or RBT. Before and after four weeks of intervention training, postural sway and electromyographic activities of shank and thigh muscles were recorded and co-contraction indices (CCI) were calculated. We argue that specificity of training interventions could be transferred into corresponding test settings containing properties of SMT and RBT, respectively. The results revealed that i) postural sway was reduced in both intervention groups in all test paradigms; magnitude of changes and effect sizes differed dependent on the paradigm: when training and paradigm coincided most, effects were augmented (P<0.05). ii) These specificities were accompanied by segmental modulations in the amount of CCI, with a greater reduction within the CCI of thigh muscles after RBT compared to the shank muscles after SMT (P<0.05). The results clearly indicate the relationship between test and intervention specificity in balance performance. Hence, specific training modalities of postural control cause multi-segmental and context-specific adaptations, depending upon the characteristics of the trained postural strategy. In relation to fall prevention, perturbation training could serve as an extension to SMT to include the proximal segment, and thus the control of structures near to the body’s centre of mass, into training.
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Affiliation(s)
- Kathrin Freyler
- Department of Sport and Sport Science, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
- * E-mail:
| | - Anne Krause
- Department of Sport and Sport Science, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
| | - Albert Gollhofer
- Department of Sport and Sport Science, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
| | - Ramona Ritzmann
- Department of Sport and Sport Science, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
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Patikas DA, Mersmann F, Bohm S, Schroll A, Marzilger R, Arampatzis A. Soleus H-reflex modulation during balance recovery after forward falling. Muscle Nerve 2016; 54:952-958. [PMID: 27065438 DOI: 10.1002/mus.25142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 04/01/2016] [Accepted: 04/07/2016] [Indexed: 11/10/2022]
Abstract
INTRODUCTION Our purpose was to examine the Hoffmann reflex (H-reflex) during balance recovery after a simulated forward fall from 2 different inclination angles. METHODS The soleus H-reflex of 15 healthy adults was measured in 2 different leaning positions (exerting a horizontal force at 15% and 30% of body weight, respectively), with no release (Int0) and at 2 different intervals (Int1, Int2) after the release (∼45 and ∼65 ms, respectively). RESULTS During Int2, the H-reflex, which was evoked before the onset of the soleus electromyography, was significantly higher than the H-reflex induced 20 ms earlier (Int1). No significant difference was observed between Int0 and Int1 and between the 2 leaning positions. CONCLUSIONS These findings indicate that Ia afferent input is facilitated before muscle activation during forward falling. This could be important for the timely activation and increased rate of force development required during this task. Muscle Nerve 54: 952-958, 2016.
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Affiliation(s)
- Dimitrios A Patikas
- Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Ag. Ioannis, 62110, Serres, Greece.
| | - Falk Mersmann
- Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Sebastian Bohm
- Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Arno Schroll
- Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Robert Marzilger
- Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Adamantios Arampatzis
- Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
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