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Lei Y, Rios V, Ji J, Duhon B, Boyd H, Xu Y. Quantifying unsupported sitting posture impairments in humans with cervical spinal cord injury using a head-mounted IMU sensor. Spinal Cord 2024; 62:65-70. [PMID: 38158410 DOI: 10.1038/s41393-023-00951-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/27/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024]
Abstract
STUDY DESIGN Cross-sectional study. OBJECTIVES To evaluate unsupported sitting posture impairments and identify postural regulatory strategies in cervical spinal cord injury (cSCI) participants via a head-mounted IMU sensor. SETTING A research lab in the United States of America. METHODS cSCI participants and controls maintained postural stability during unsupported sitting with eyes either open or closed. The head-mounted IMU sensor recorded accelerometer data to calculate cumulative sway motion. The postural regulatory strategy was analyzed by assessing the normalized power spectral density (PSD) in four frequency bands: 0-0.1 Hz (visual regulation), 0.1-0.5 Hz (vestibular regulation), 0.5-1 Hz (cerebellar regulation), and >1 Hz (proprioception and muscle control). RESULTS Significant increases in postural sway were observed in cSCI participants compared to controls during unsupported sitting. For cSCI participants, normalized PSD significantly increased in the low-frequency bands (0-0.1 Hz and 0.1-0.5 Hz) but decreased in the high-frequency band (>1 Hz) compared to controls. CONCLUSIONS cSCI participants were more reliant on visual and vestibular systems for sitting balance, while depending less on proprioception and muscle control compared to controls. These findings suggest that the altered postural regulatory strategy is ineffective in maintaining postural stability during unsupported sitting, emphasizing the importance of proprioception and muscle control for seated postural stability in cSCI participants.
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Affiliation(s)
- Yuming Lei
- Program of Motor Neuroscience, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, 77843, USA.
| | - Victoria Rios
- Program of Motor Neuroscience, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, 77843, USA
| | - Jessica Ji
- Program of Motor Neuroscience, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, 77843, USA
| | - Brandon Duhon
- Program of Motor Neuroscience, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, 77843, USA
| | - Hunter Boyd
- Program of Motor Neuroscience, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, 77843, USA
| | - Yunhan Xu
- Program of Motor Neuroscience, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, 77843, USA
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Abdollah V, Noamani A, Ralston J, Ho C, Rouhani H. Effect of test duration and sensor location on the reliability of standing balance parameters derived using body-mounted accelerometers. Biomed Eng Online 2024; 23:2. [PMID: 38167089 PMCID: PMC10763154 DOI: 10.1186/s12938-023-01196-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Balance parameters derived from wearable sensor measurements during postural sway have been shown to be sensitive to experimental variables such as test duration, sensor number, and sensor location that influence the magnitude and frequency-related properties of measured center-of-mass (COM) and center-of-pressure (COP) excursions. In this study, we investigated the effects of test duration, the number of sensors, and sensor location on the reliability of standing balance parameters derived using body-mounted accelerometers. METHODS Twelve volunteers without any prior history of balance disorders were enrolled in the study. They were asked to perform two 2-min quiet standing tests with two different testing conditions (eyes open and eyes closed). Five inertial measurement units (IMUs) were employed to capture postural sway data from each participant. IMUs were attached to the participants' right legs, the second sacral vertebra, sternum, and the left mastoid processes. Balance parameters of interest were calculated for the single head, sternum, and sacrum accelerometers, as well as, a three-sensor combination (leg, sacrum, and sternum). Accelerometer data were used to estimate COP-based and COM-based balance parameters during quiet standing. To examine the effect of test duration and sensor location, each 120-s recording from different sensor locations was segmented into 20-, 30-, 40-, 50-, 60-, 70-, 80-, 90-, 100-, and 110-s intervals. For each of these time intervals, time- and frequency-domain balance parameters were calculated for all sensor locations. RESULTS Most COM-based and COP-based balance parameters could be derived reliably for clinical applications (Intraclass-Correlation Coefficient, ICC ≥ 0.90) with a minimum test duration of 70 and 110 s, respectively. The exceptions were COP-based parameters obtained using a sacrum-mounted sensor, especially in the eyes-closed condition, which could not be reliably used for clinical applications even with a 120-s test duration. CONCLUSIONS Most standing balance parameters can be reliably measured using a single head- or sternum-mounted sensor within a 120-s test duration. For other sensor locations, the minimum test duration may be longer and may depend on the specific test conditions.
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Affiliation(s)
- Vahid Abdollah
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada
- Division of Physical Medicine and Rehabilitation, University of Alberta, Edmonton, AB, Canada
| | - Alireza Noamani
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada
| | | | - Chester Ho
- Division of Physical Medicine and Rehabilitation, University of Alberta, Edmonton, AB, Canada
- Glenrose Rehabilitation Hospital, Edmonton, AB, Canada
| | - Hossein Rouhani
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB, Canada.
- Glenrose Rehabilitation Hospital, Edmonton, AB, Canada.
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Gupta N, Kasula V, Sanmugananthan P, Panico N, Dubin AH, Sykes DAW, D'Amico RS. SmartWear body sensors for neurological and neurosurgical patients: A review of current and future technologies. World Neurosurg X 2024; 21:100247. [PMID: 38033718 PMCID: PMC10682285 DOI: 10.1016/j.wnsx.2023.100247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 10/24/2023] [Indexed: 12/02/2023] Open
Abstract
Background/objective Recent technological advances have allowed for the development of smart wearable devices (SmartWear) which can be used to monitor various aspects of patient healthcare. These devices provide clinicians with continuous biometric data collection for patients in both inpatient and outpatient settings. Although these devices have been widely used in fields such as cardiology and orthopedics, their use in the field of neurosurgery and neurology remains in its infancy. Methods A comprehensive literature search for the current and future applications of SmartWear devices in the above conditions was conducted, focusing on outpatient monitoring. Findings Through the integration of sensors which measure parameters such as physical activity, hemodynamic variables, and electrical conductivity - these devices have been applied to patient populations such as those at risk for stroke, suffering from epilepsy, with neurodegenerative disease, with spinal cord injury and/or recovering from neurosurgical procedures. Further, these devices are being tested in various clinical trials and there is a demonstrated interest in the development of new technologies. Conclusion This review provides an in-depth evaluation of the use of SmartWear in selected neurological diseases and neurosurgical applications. It is clear that these devices have demonstrated efficacy in a variety of neurological and neurosurgical applications, however challenges such as data privacy and management must be addressed.
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Affiliation(s)
- Nithin Gupta
- Campbell University School of Osteopathic Medicine, Lillington, NC, USA
| | - Varun Kasula
- Campbell University School of Osteopathic Medicine, Lillington, NC, USA
| | | | | | - Aimee H. Dubin
- Campbell University School of Osteopathic Medicine, Lillington, NC, USA
| | - David AW. Sykes
- Department of Neurosurgery, Duke University Medical School, Durham, NC, USA
| | - Randy S. D'Amico
- Lenox Hill Hospital, Department of Neurosurgery, New York, NY, USA
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Ahmad I, Reddy RS, Alqhtani RS, Tedla JS, Dixit S, Ghulam HSH, Alyami AM, Al Adal S, Jarrar MAM. Exploring the Nexus of lower extremity proprioception and postural stability in older adults with osteoporosis: a cross-sectional investigation. Front Public Health 2023; 11:1287223. [PMID: 38098834 PMCID: PMC10720312 DOI: 10.3389/fpubh.2023.1287223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 11/14/2023] [Indexed: 12/17/2023] Open
Abstract
Background Osteoporosis, characterized by reduced bone mass and micro-architectural deterioration, poses a significant public health concern due to increased fracture susceptibility. Beyond bone health, this cross-sectional study aimed to assess and compare lower extremity proprioception and postural stability in individuals with and without osteoporosis and to explore their correlation within the osteoporosis group. Method In this prospective cross-sectional study, 80 participants were divided into two groups: osteoporosis (n = 40) and control (n = 40). The demographic characteristics and clinical parameters of the participants were as follows: Age (years) - Osteoporosis group: 65.04 ± 4.33, Control group: 65.24 ± 4.63; Sex (%) - Osteoporosis group: Male 30%, Female 70%; Control group: Male 30%, Female 70%; Body mass index (kg/m2) - Osteoporosis group: 23.7 ± 3.2, Control group: 24.5 ± 4.6; T-score (Lumbar) - Osteoporosis group: -2.86 ± 1.23, Control group: 0.27 ± 0.58; T-score (hip) - Osteoporosis group: -2.28 ± 0.79, Control group: 0.68 ± 0.86. Joint Position Sense (JPS) at the hip, knee, and ankle was assessed using a digital inclinometer, and postural stability was measured using computerized force platforms. Result Osteoporosis participants exhibited higher errors in hip (5.63° vs. 2.36°), knee (4.86° vs. 1.98°), and ankle (4.46° vs. 2.02°) JPS compared to controls. Postural stability measures showed increased anterior-posterior sway (10.86 mm vs. 3.98 mm), medial-lateral sway (8.67 mm vs. 2.89 mm), and ellipse area (966.88 mm2 vs. 446.19 mm2) in osteoporosis participants. Furthermore, correlation analyses within the osteoporosis group unveiled significant positive associations between lower extremity proprioception and postural stability. Specifically, hip JPS exhibited a strong positive correlation with anterior-posterior sway (r = 0.493, p = 0.003), medial-lateral sway (r = 0.485, p = 0.003), and ellipse area (r = 0.496, p < 0.001). Knee JPS displayed a moderate positive correlation with anterior-posterior sway (r = 0.397, p = 0.012), medial-lateral sway (r = 0.337, p = 0.032), and ellipse area (r = 0.378, p < 0.001). Similarly, ankle JPS showed a moderate positive correlation with anterior-posterior sway (r = 0.373, p = 0.023), medial-lateral sway (r = 0.308, p = 0.045), and ellipse area (r = 0.368, p = 0.021). Conclusion These findings underscore the interplay between proprioceptive deficits, compromised postural stability, and osteoporosis, emphasizing the need for targeted interventions to improve fall prevention strategies and enhance the quality of life for individuals with osteoporosis.
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Affiliation(s)
- Irshad Ahmad
- Program of Physical Therapy, Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Ravi Shankar Reddy
- Program of Physical Therapy, Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Raee S. Alqhtani
- Physical Therapy Department Medical Applied Sciences College, Najran University, Najran, Saudi Arabia
| | - Jaya Shanker Tedla
- Program of Physical Therapy, Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Snehil Dixit
- Program of Physical Therapy, Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Hussain Saleh H. Ghulam
- Physical Therapy Department Medical Applied Sciences College, Najran University, Najran, Saudi Arabia
| | - Abdullah Mohammed Alyami
- Rehabilitation Sciences Department, Applied Medical Sciences College, Najran University, Najran, Saudi Arabia
| | - Saeed Al Adal
- Physical Therapy Department Medical Applied Sciences College, Najran University, Najran, Saudi Arabia
| | - Mohammad A. M. Jarrar
- Rehabilitation Sciences Department, Applied Medical Sciences College, Najran University, Najran, Saudi Arabia
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Noamani A, Riahi N, Vette AH, Rouhani H. Clinical Static Balance Assessment: A Narrative Review of Traditional and IMU-Based Posturography in Older Adults and Individuals with Incomplete Spinal Cord Injury. SENSORS (BASEL, SWITZERLAND) 2023; 23:8881. [PMID: 37960580 PMCID: PMC10650039 DOI: 10.3390/s23218881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
Maintaining a stable upright posture is essential for performing activities of daily living, and impaired standing balance may impact an individual's quality of life. Therefore, accurate and sensitive methods for assessing static balance are crucial for identifying balance impairments, understanding the underlying mechanisms of the balance deficiencies, and developing targeted interventions to improve standing balance and prevent falls. This review paper first explores the methods to quantify standing balance. Then, it reviews traditional posturography and recent advancements in using wearable inertial measurement units (IMUs) to assess static balance in two populations: older adults and those with incomplete spinal cord injury (iSCI). The inclusion of these two groups is supported by their large representation among individuals with balance impairments. Also, each group exhibits distinct aspects in balance assessment due to diverse underlying causes associated with aging and neurological impairment. Given the high vulnerability of both demographics to balance impairments and falls, the significance of targeted interventions to improve standing balance and mitigate fall risk becomes apparent. Overall, this review highlights the importance of static balance assessment and the potential of emerging methods and technologies to improve our understanding of postural control in different populations.
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Affiliation(s)
- Alireza Noamani
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada; (A.N.); (N.R.); (A.H.V.)
| | - Negar Riahi
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada; (A.N.); (N.R.); (A.H.V.)
| | - Albert H. Vette
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada; (A.N.); (N.R.); (A.H.V.)
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
- Glenrose Rehabilitation Hospital, Alberta Health Services, Edmonton, AB T5G 0B7, Canada
| | - Hossein Rouhani
- Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada; (A.N.); (N.R.); (A.H.V.)
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
- Glenrose Rehabilitation Hospital, Alberta Health Services, Edmonton, AB T5G 0B7, Canada
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Sinovas-Alonso I, Herrera-Valenzuela D, de-Los-Reyes-Guzmán A, Cano-de-la-Cuerda R, Del-Ama AJ, Gil-Agudo Á. Construct Validity of the Gait Deviation Index for People With Incomplete Spinal Cord Injury (GDI-SCI). Neurorehabil Neural Repair 2023; 37:705-715. [PMID: 37864467 DOI: 10.1177/15459683231206747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
BACKGROUND The Gait Deviation Index for Spinal Cord Injury (SCI-GDI) was recently proposed as a dimensionless multivariate kinematic measure based on 21 gait features derived from 3-dimensional kinematic data which quantifies gait impairment of adult population with incomplete spinal cord injury (iSCI) relative to the normative gait of a healthy group. Nevertheless, no validity studies of the SCI-GDI have been published to date. OBJECTIVE To assess the construct validity of the SCI-GDI in adult population following iSCI. Methods. SCI-GDI data were obtained from a sample of 50 healthy volunteers and 35 adults with iSCI. iSCI group was also assessed with the following measures: 10-Meter Walk Test (10MWT) at both self-selected (SS) and maximum speeds, Timed Up and Go Test (TUGT), SS and maximum levels of the Walking Index for Spinal Cord Injury (WISCI) II, mobility items of the Spinal Cord Independence Measure III (SCIM IIIIOMob), Lower Extremity Motor Score (LEMS), and Modified Ashworth Scale (MAS). Spearman's correlation coefficient was used to investigate the relationship with the SCI-GDI. RESULTS SCI-GDI shows strong correlation with the 10MWT (r ≥ -.716) and good correlation with LEMS (r = .638), TUGT (r = -.582), SS WISCI II levels (r = .521), and SCIM IIIIOMob (r = .501). No significant correlations were found with maximum WISCI II levels and MAS (P > .006). CONCLUSIONS Construct validity of the SCI-GDI was demonstrated with the 10MWT, TUGT, LEMS, SCIM IIIIOMob, and SS WISCI II levels for independently walking adults with iSCI. Future work will include assessing the psychometric characteristics with a more heterogeneous sample, also considering the pediatric population.
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Affiliation(s)
- Isabel Sinovas-Alonso
- Biomechanics and Technical Aids Unit, National Hospital for Paraplegics (SESCAM), Toledo, Spain
- International Doctoral School, Rey Juan Carlos University, Madrid, Spain
| | - Diana Herrera-Valenzuela
- Biomechanics and Technical Aids Unit, National Hospital for Paraplegics (SESCAM), Toledo, Spain
- International Doctoral School, Rey Juan Carlos University, Madrid, Spain
| | - Ana de-Los-Reyes-Guzmán
- Biomechanics and Technical Aids Unit, National Hospital for Paraplegics (SESCAM), Toledo, Spain
- Neurorehabilitation, Biomechanics and Sensory-Motor Function (HNP-SESCAM), RDI Associated Unit of the CSIC, Toledo, Spain
| | - Roberto Cano-de-la-Cuerda
- Movement Analysis, Biomechanics, Ergonomics and Motor Control Laboratory (LAMBECOM), Department of Physical Therapy, Occupational Therapy, Physical Medicine and Rehabilitation, Faculty of Health Sciences, Rey Juan Carlos University, Madrid, Spain
| | - Antonio J Del-Ama
- Department of Applied Mathematics, Materials Science and Engineering, and Electronic Technology, School of Science and Technology, Rey Juan Carlos University, Madrid, Spain
| | - Ángel Gil-Agudo
- Biomechanics and Technical Aids Unit, National Hospital for Paraplegics (SESCAM), Toledo, Spain
- Neurorehabilitation, Biomechanics and Sensory-Motor Function (HNP-SESCAM), RDI Associated Unit of the CSIC, Toledo, Spain
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Shen K, Li G, Chemori A, Hayashibe M. Self-organizing neural network for reproducing human postural mode alternation through deep reinforcement learning. Sci Rep 2023; 13:8966. [PMID: 37268710 DOI: 10.1038/s41598-023-35886-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 05/25/2023] [Indexed: 06/04/2023] Open
Abstract
A self-organized phenomenon in postural coordination is essential for understanding the auto-switching mechanism of in-phase and anti-phase postural coordination modes during standing and related supra-postural activities. Previously, a model-based approach was proposed to reproduce such self-organized phenomenon. However, if we set this problem including the process of how we establish the internal predictive model in our central nervous system, the learning process is critical to be considered for establishing a neural network for managing adaptive postural control. Particularly when body characteristics may change due to growth or aging or are initially unknown for infants, a learning capability can improve the hyper-adaptivity of human motor control for maintaining postural stability and saving energy in daily living. This study attempted to generate a self-organizing neural network that can adaptively coordinate the postural mode without assuming a prior body model regarding body dynamics and kinematics. Postural coordination modes are reproduced in head-target tracking tasks through a deep reinforcement learning algorithm. The transitions between the postural coordination types, i.e. in-phase and anti-phase coordination modes, could be reproduced by changing the task condition of the head tracking target, by changing the frequencies of the moving target. These modes are considered emergent phenomena existing in human head tracking tasks. Various evaluation indices, such as correlation, and relative phase of hip and ankle joint, are analyzed to verify the self-organizing neural network performance to produce the postural coordination transition between the in-phase and anti-phase modes. In addition, after learning, the neural network can also adapt to continuous task condition changes and even to unlearned body mass conditions keeping consistent in-phase and anti-phase mode alternation.
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Affiliation(s)
- Keli Shen
- Department of Robotics, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Guanda Li
- Department of Robotics, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Ahmed Chemori
- LIRMM, University of Montpellier, CNRS, Montpellier, France
| | - Mitsuhiro Hayashibe
- Department of Robotics, Graduate School of Engineering, Tohoku University, Sendai, Japan.
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Patathong T, Klaewkasikum K, Woratanarat P, Rattanasiri S, Anothaisintawee T, Woratanarat T, Thakkinstian A. The efficacy of gait rehabilitations for the treatment of incomplete spinal cord injury: a systematic review and network meta-analysis. J Orthop Surg Res 2023; 18:60. [PMID: 36683024 PMCID: PMC9869518 DOI: 10.1186/s13018-022-03459-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 12/16/2022] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Recent pieces of evidence about the efficacy of gait rehabilitation for incomplete spinal cord injury remain unclear. We aimed to estimate the treatment effect and find the best gait rehabilitation to regain velocity, distance, and Walking Index Spinal Cord Injury (WISCI) among incomplete spinal cord injury patients. METHOD PubMed and Scopus databases were searched from inception to October 2022. Randomized controlled trials (RCTs) were included in comparison with any of the following: conventional physical therapy, treadmill, functional electrical stimulation and robotic-assisted gait training, and reported at least one outcome. Two reviewers independently selected the studies and extracted the data. Meta-analysis was performed using random-effects or fixed-effect model according to the heterogeneity. Network meta-analysis (NMA) was indirectly compared with all interventions and reported as pooled unstandardized mean difference (USMD) and 95% confidence interval (CI). Surface under the cumulative ranking curve (SUCRA) was calculated to identify the best intervention. RESULTS We included 17 RCTs (709 participants) with the mean age of 43.9 years. Acute-phase robotic-assisted gait training significantly improved the velocity (USMD 0.1 m/s, 95% CI 0.05, 0.14), distance (USMD 64.75 m, 95% CI 27.24, 102.27), and WISCI (USMD 3.28, 95% CI 0.12, 6.45) compared to conventional physical therapy. In NMA, functional electrical stimulation had the highest probability of being the best intervention for velocity (66.6%, SUCRA 82.1) and distance (39.7%, SUCRA 67.4), followed by treadmill, functional electrical stimulation plus treadmill, robotic-assisted gait training, and conventional physical therapy, respectively. CONCLUSION Functional electrical stimulation seems to be the best treatment to improve walking velocity and distance for incomplete spinal cord injury patients. However, a large-scale RCT is required to study the adverse events of these interventions. TRIAL REGISTRATION PROSPERO number CRD42019145797.
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Affiliation(s)
- Tanyaporn Patathong
- grid.10223.320000 0004 1937 0490Department of Orthopedics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Payathai, Ratchathewi, Bangkok, 10400 Thailand
| | - Krongkaew Klaewkasikum
- grid.10223.320000 0004 1937 0490Department of Orthopedics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Payathai, Ratchathewi, Bangkok, 10400 Thailand
| | - Patarawan Woratanarat
- grid.10223.320000 0004 1937 0490Department of Orthopedics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Payathai, Ratchathewi, Bangkok, 10400 Thailand
| | - Sasivimol Rattanasiri
- grid.10223.320000 0004 1937 0490Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, 10400 Thailand
| | - Thunyarat Anothaisintawee
- grid.10223.320000 0004 1937 0490Department of Family Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, 10400 Thailand
| | - Thira Woratanarat
- grid.7922.e0000 0001 0244 7875Department of Preventive and Social Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330 Thailand
| | - Ammarin Thakkinstian
- grid.10223.320000 0004 1937 0490Department of Clinical Epidemiology and Biostatistics, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, 10400 Thailand
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Walia S, Kumar P, Kataria C. Effect of virtual reality training on standing balance in individuals with incomplete spinal cord injury. COMPARATIVE EXERCISE PHYSIOLOGY 2022. [DOI: 10.3920/cep220031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recovery of balance ability during standing is one of the primary and essential aims of rehabilitative programs in individuals with incomplete spinal cord injury (iSCI). A sample of ten participants (mean age: 35.7 years, range: 25-63 years) with traumatic or non-traumatic iSCI (AIS grade C or D) and were able to stand with or without the support of an assistive device for a minimum of 2 min were recruited from the rehabilitation department of the Indian Spinal Injuries Centre, New Delhi, India. The participants received Virtual Reality (VR) based balance training for one hour, three times a week for four weeks on the Nintendo Wii gaming console. Participants were assessed three times: pre-intervention, post-intervention and follow-up assessment for the total ellipse area (TEA), total sway perimeter (TSP), sway range (anterior-posterior/medio-lateral (AP/ML)) and limits of stability (LOS). At post-intervention assessment, significant increases in comparison with pre-intervention scores was found in LOS (P=0.00), TEA with eyes open (EO) (P=0.00) and eyes closed (EC) (P=0.00), TSP with EO (P=0.00) and EC (P=0.00), sway range in AP direction (SD-AP) with EO (P=0.01) and EC (P=0.02) and sway range in ML direction (SD-ML) with EO (P=0.02) and EC (P=0.01). At follow-up assessment, a significant improvement in comparison to post intervention scores was found in TEA measured both in EO (P=0.01) and EC conditions (P=0.02), TSP measured with EO (P=0.01) and SD-ML both with EO (P=0.04) and EC (P=0.01). No significant changes were found in LOS (P=0.89), TSP measured with EC (P=0.38) and SD-AP both with EO (P=0.50) and EC (P=1). However, significant improvement was seen on comparing follow-up assessment scores with pre-intervention scores for all variables, such as LOS (P=0.00), TEA in EO (P=0.00) and EC (P=0.00), TSP with EO (P=0.00) and EC (P=0.00), SD-AP with EO (P=0.01) and EC (P=0.02) and SD-ML with EO (P=0.01) and EC (P=0.00). VR-based balance training intervention was able to elicit improvements in balance ability and maintain it during follow-up despite a small training dosage suggesting that it is a promising intervention for standing balance rehabilitation among individuals with iSCI. The VR-based balance training challenges elements of balance, which physical therapists may want to consider when designing a comprehensive rehabilitation program. Clinical Trials Registry-India: CTRI/2018/12/016814.
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Affiliation(s)
- S. Walia
- Amity Institute of Physiotherapy, Amity University, Sector 125, Noida, Uttar Pradesh 201303, India
- Indian Spinal Injuries Centre, Sector C, Vasant Kunj, New Delhi 110070, India
| | - P. Kumar
- Amity Institute of Physiotherapy, Amity University, Sector 125, Noida, Uttar Pradesh 201303, India
| | - C. Kataria
- Indian Spinal Injuries Centre, Sector C, Vasant Kunj, New Delhi 110070, India
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Mitsutake T, Taniguchi T, Nakazono H, Yoshizuka H, Sakamoto M. Effects of Noisy Galvanic Vestibular Stimulation on the Muscle Activity and Joint Movements in Different Standing Postures Conditions. Front Hum Neurosci 2022; 16:891669. [PMID: 35721349 PMCID: PMC9202802 DOI: 10.3389/fnhum.2022.891669] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/11/2022] [Indexed: 11/15/2022] Open
Abstract
Objective Noisy galvanic vestibular stimulation (nGVS) is an effective method for stabilizing posture; however, little is known regarding the detailed muscle activity and joint movement in the standing posture. This study aimed to clarify the changes in the lower limb muscle activity and joint angular velocity by nGVS intervention using the simultaneous assessment method of inertial measurement units and surface electromyography (EMG). Methods Seventeen healthy participants were assessed for their physical responses under four conditions (standing on a firm surface with eyes-open/eyes-closed, and a foam surface with eyes-open/eyes-closed) without stimulation (baseline) and with stimulation (sham or nGVS). Noise stimuli were applied for 30 s at a level below the perceptual threshold. The body control response was evaluated using EMG activity and angular velocity of the lower limbs. Result Regarding the change from baseline for each parameter, there was a significant interactive effect of EMG activity in the muscle type × intervention and EMG activity and angular velocity in the condition × intervention. Post hoc analysis revealed that the angular velocity was significantly decreased in the abduction-adduction direction in the standing on a foam surface with eyes-closed condition compared to that with eyes-open in the nGVS intervention. Conclusion Our results suggest that nGVS altered physical responses in different standing postural conditions. The present study is exploratory and therefore the evidence should be investigated in future studies specifically target those muscle activities and joint motion parameters.
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Affiliation(s)
- Tsubasa Mitsutake
- Department of Physical Therapy, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan
- *Correspondence: Tsubasa Mitsutake
| | - Takanori Taniguchi
- Department of Physical Therapy, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan
| | - Hisato Nakazono
- Department of Occupational Therapy, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan
| | - Hisayoshi Yoshizuka
- Department of Physical Therapy, Faculty of Medical Science, Fukuoka International University of Health and Welfare, Fukuoka, Japan
| | - Maiko Sakamoto
- Faculty of Medicine, Education and Research Center for Community Medicine, Saga University, Saga, Japan
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Topical application of CNTF, GDNF and BDNF in combination attenuates blood-spinal cord barrier permeability, edema formation, hemeoxygenase-2 upregulation, and cord pathology. PROGRESS IN BRAIN RESEARCH 2021; 266:357-376. [PMID: 34689864 DOI: 10.1016/bs.pbr.2021.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Spinal cord injury (SCI) is one of the leading causes of disability in Military personnel for which no suitable therapeutic strategies are available till today. Thus, exploration of novel therapeutic measures is highly needed to enhance the quality of life of SCI victims. Previously, topical application of BDNF and GDNF in combination over the injured spinal cord after 90min induced marked neuroprotection. In present investigation, we added CNTF in combination with BDNF and/or GDNF treatment to examine weather the triple combination applied over the traumatic cord after 90 or 120min could thwart cord pathology. Since neurotrophins attenuate nitric oxide (NO) production in SCI, the role of carbon monoxide (CO) production that is similar to NO in inducing cell injury was explored using immunohistochemistry of the constitutive isoform of enzyme hemeoxygenase-2 (HO-2). SCI inflicted over the right dorsal horn of the T10-11 segments by making an incision of 2mm deep and 5mm long upregulated the HO-2 immunostaining in the T9 and T12 segments after 5h injury. These perifocal segments are associated with breakdown of the blood-spinal cord barrier (BSCB), edema development and cell injuries. Topical application of CNTF with BDNF and GDNF in combination (10ng each) after 90 and 120min over the injured spinal cord significantly attenuated the BSCB breakdown, edema formation, cell injury and overexpression of HO-2. These observations are the first to show that CNTF with BDNF and GDNF induced superior neuroprotection in SCI probably by downregulation of CO production, not reported earlier.
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Habib Perez O, Chan K, Unger J, Lee JW, Masani K, Musselman KE. Characterizing inter-limb synchronization after incomplete spinal cord injury: A cross-sectional study. Gait Posture 2021; 85:191-197. [PMID: 33610130 DOI: 10.1016/j.gaitpost.2021.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/14/2021] [Accepted: 02/08/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Individuals with incomplete spinal cord injury (iSCI) demonstrate greater postural sway and increased dependency on vision to maintain balance compared to able-bodied individuals. Research on standing balance after iSCI has focused on the joint contribution of the lower limbs; however, inter-limb synchrony in quiet standing is a sensitive measure of individual limb contributions to standing balance control in other neurological populations. It is unknown if and how reduced inter-limb synchrony contributes to the poor standing balance of individuals with iSCI. RESEARCH QUESTION How does an iSCI affect inter-limb synchrony and weight-bearing symmetry in standing? METHODS Eighteen individuals with non-progressive motor iSCI and 15 age- and sex-matched able-bodied individuals (M-AB) were included in the study. Participants stood in a standardized position on two adjacent force plates in eyes open and closed conditions for 70 s per condition. Net centre-of-pressure (COP) root mean square (RMS), net COP velocity, COP inter-limb synchrony (i.e. cross-correlation between left and right COP), and weight-bearing asymmetry (i.e. vertical force from each limb over total vertical force) were calculated. Muscle strength of the lower limbs was assessed with manual muscle testing. RESULTS Individuals with iSCI demonstrated reduced inter-limb synchrony when standing with eyes open and eyes closed, but did not differ to M-AB with respect to weight-bearing asymmetry. They also produced greater net COP RMS and velocity when compared to M-AB. Muscle strength of the two lower limbs demonstrated an overall asymmetry in individuals with iSCI. SIGNIFICANCE Individuals with iSCI demonstrated impaired balance control as evidenced by reduced inter-limb synchrony and greater COP RMS and velocity compared to M-AB individuals. This increased understanding of how balance control is impaired following iSCI may inform balance assessment and intervention for this population. Future work examining the association between inter-limb synchrony and the occurrence of falls in iSCI is warranted.
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Affiliation(s)
- Olinda Habib Perez
- KITE, Toronto Rehab - University Health Network, 520 Sutherland Dr., M4G 3V9, Canada
| | - Katherine Chan
- KITE, Toronto Rehab - University Health Network, 520 Sutherland Dr., M4G 3V9, Canada
| | - Janelle Unger
- KITE, Toronto Rehab - University Health Network, 520 Sutherland Dr., M4G 3V9, Canada; Rehabilitation Sciences Institute, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada
| | - Jae W Lee
- KITE, Toronto Rehab - University Health Network, 520 Sutherland Dr., M4G 3V9, Canada; Institute of Biomaterials & Biomedical Engineering, University of Toronto, 164 College Street, Toronto, ON, M5S 3G9, Canada
| | - Kei Masani
- KITE, Toronto Rehab - University Health Network, 520 Sutherland Dr., M4G 3V9, Canada; Institute of Biomaterials & Biomedical Engineering, University of Toronto, 164 College Street, Toronto, ON, M5S 3G9, Canada
| | - Kristin E Musselman
- KITE, Toronto Rehab - University Health Network, 520 Sutherland Dr., M4G 3V9, Canada; Rehabilitation Sciences Institute, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada; Department of Physical Therapy, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada.
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