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Wodarski P, Jurkojć J, Chmura M, Warmerdam E, Romijnders R, Hobert MA, Maetzler W, Cygoń K, Hansen C. Trend change analysis of postural balance in Parkinson's disease discriminates between medication state. J Neuroeng Rehabil 2024; 21:112. [PMID: 38943208 DOI: 10.1186/s12984-024-01411-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 06/20/2024] [Indexed: 07/01/2024] Open
Abstract
BACKGROUND Maintaining static balance is relevant and common in everyday life and it depends on a correct intersegmental coordination. A change or reduction in postural capacity has been linked to increased risk of falls. People with Parkinson's disease (pwPD) experience motor symptoms affecting the maintenance of a stable posture. The aim of the study is to understand the intersegmental changes in postural sway and to apply a trend change analysis to uncover different movement strategies between pwPD and healthy adults. METHODS In total, 61 healthy participants, 40 young (YO), 21 old participants (OP), and 29 pwPD (13 during medication off, PDoff; 23 during medication on, PDon) were included. Participants stood quietly for 10 s as part of the Short Physical Performance Battery. Inertial measurement units (IMU) at the head, sternum, and lumbar region were used to extract postural parameters and a trend change analysis (TCA) was performed to compare between groups. OBJECTIVE This study aims to explore the potential application of TCA for the assessment of postural stability using IMUs, and secondly, to employ this analysis within the context of neurological diseases, specifically Parkinson's disease. RESULTS Comparison of sensors locations revealed significant differences between head, sternum and pelvis for almost all parameters and cohorts. When comparing PDon and PDoff, the TCA revealed differences that were not seen by any other parameter. CONCLUSIONS While all parameters could differentiate between sensor locations, no group differences could be uncovered except for the TCA that allowed to distinguish between the PD on/off. The potential of the TCA to assess disease progression, response to treatment or even the prodromal PD phase should be explored in future studies. TRIAL REGISTRATION The research procedure was approved by the ethical committee of the Medical Faculty of Kiel University (D438/18). The study is registered in the German Clinical Trials Register (DRKS00022998).
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Affiliation(s)
- Piotr Wodarski
- Faculty of Biomedical Engineering, Department of Biomechatronics, Silesian University of Technology, Gliwice, Poland
| | - Jacek Jurkojć
- Faculty of Biomedical Engineering, Department of Biomechatronics, Silesian University of Technology, Gliwice, Poland
| | - Marta Chmura
- Faculty of Biomedical Engineering, Department of Biomechatronics, Silesian University of Technology, Gliwice, Poland
| | - Elke Warmerdam
- Division of Surgery, Saarland University, 66421, Homburg, Germany
| | | | - Markus A Hobert
- Department of Neurology, Kiel University, 24105, Kiel, Germany
| | - Walter Maetzler
- Department of Neurology, Kiel University, 24105, Kiel, Germany
| | | | - Clint Hansen
- Department of Neurology, Kiel University, 24105, Kiel, Germany.
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Maetzler W, Mirelman A, Pilotto A, Bhidayasiri R. Identifying Subtle Motor Deficits Before Parkinson's Disease is Diagnosed: What to Look for? JOURNAL OF PARKINSON'S DISEASE 2024:JPD230350. [PMID: 38363620 DOI: 10.3233/jpd-230350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Motor deficits typical of Parkinson's disease (PD), such as gait and balance disturbances, tremor, reduced arm swing and finger movement, and voice and breathing changes, are believed to manifest several years prior to clinical diagnosis. Here we describe the evidence for the presence and progression of motor deficits in this pre-diagnostic phase in order to provide suggestions for the design of future observational studies for an effective, quantitatively oriented investigation. On the one hand, these future studies must detect these motor deficits in as large (potentially, population-based) cohorts as possible with high sensitivity and specificity. On the other hand, they must describe the progression of these motor deficits in the pre-diagnostic phase as accurately as possible, to support the testing of the effect of pharmacological and non-pharmacological interventions. Digital technologies and artificial intelligence can substantially accelerate this process.
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Affiliation(s)
- Walter Maetzler
- Department of Neurology University Hospital Schleswig-Holstein and Kiel University, Kiel, Germany
| | - Anat Mirelman
- Laboratory for Early Markers of Neurodegeneration, Neurological Institute, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
- Sagol School of Neuroscience and Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Andrea Pilotto
- Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
- Laboratory of Digital Neurology and Biosensors, University of Brescia, Brescia, Italy
- Neurology Unit, Department of Continuity of Care and Frailty, ASST Spedali Civili Brescia Hospital, Brescia, Italy
| | - Roongroj Bhidayasiri
- Chulalongkorn Centre of Excellence for Parkinson's Disease & Related Disorders, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
- The Academy of Science, The Royal Society of Thailand, Bangkok, Thailand
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Wang T, Yang L, Li X, Su P, Meng D. Characteristics of static balance performance in 4-Stage Balance test in the Healthy Older Adults. Int J Neurosci 2024:1-11. [PMID: 38305048 DOI: 10.1080/00207454.2024.2312992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 01/27/2024] [Indexed: 02/03/2024]
Abstract
Background: The 4-Stage Balance test is one of the most commonly used tests to assess balance for older adults. Although it is generally accepted that the four positions (including side-by-side (SBSS), semi-tandem (STS), tandem (TS), and single-leg stance (SLS)) in this test are progressively more difficult, there are no studies comparing the balance parameters of the four positions in older adults to prove this result. The purpose of this study is to determine the difficulty of 4 positions in the 4-Stage Balance test and the effect of the dominant and non-dominant lower extremities on static balance among healthy older adults; Methods: A total of 115 community-dwelling healthy older adults were included. The postural parameters (including sway range standard deviation (SR), velocity of body sway (V), total sway area (TSA) and sway perimeter (TSP) of the center of pressure) were measured during 8 static postures (including SBSS, left STS, right STS, left TS, right TS, left SLS, right SLS and comfortable stance (CS)). Repeated measures ANOVA was used to analyze the postural parameters in 8 static postures; Results: The static balance stability of the five stances in older adults can be ranked in the following sequence: CS > SBSS/STS > TS > SLS. Moreover, changing foot placement in STS, TS and SLS tasks has no influence on stability. This study has been registered in China Clinical Trial Registry (ChiCTR2200065803). Conclusions: Our findings suggest that it is feasible to simplify the 4-Stage Balance test to a 3-Stage Balance test in the older adults.
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Affiliation(s)
- Tiantian Wang
- Rehabilitation Medical Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Liuxin Yang
- Rehabilitation Medical Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Xuan Li
- Rehabilitation Medical Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
| | - Panpan Su
- Department of Rehabilitation Medicine, Shengze Hospital Affiliated to Nanjing Medical University, Suzhou 215200, China
| | - Dianhuai Meng
- Rehabilitation Medical Center, The First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
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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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Manna SK, Hannan Bin Azhar M, Greace A. Optimal locations and computational frameworks of FSR and IMU sensors for measuring gait abnormalities. Heliyon 2023; 9:e15210. [PMID: 37089328 PMCID: PMC10113840 DOI: 10.1016/j.heliyon.2023.e15210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 02/05/2023] [Accepted: 03/29/2023] [Indexed: 04/07/2023] Open
Abstract
Neuromuscular diseases cause abnormal joint movements and drastically alter gait patterns in patients. The analysis of abnormal gait patterns can provide clinicians with an in-depth insight into implementing appropriate rehabilitation therapies. Wearable sensors are used to measure the gait patterns of neuromuscular patients due to their non-invasive and cost-efficient characteristics. FSR and IMU sensors are the most popular and efficient options. When assessing abnormal gait patterns, it is important to determine the optimal locations of FSRs and IMUs on the human body, along with their computational framework. The gait abnormalities of different types and the gait analysis systems based on IMUs and FSRs have therefore been investigated. After studying a variety of research articles, the optimal locations of the FSR and IMU sensors were determined by analysing the main pressure points under the feet and prime anatomical locations on the human body. A total of seven locations (the big toe, heel, first, third, and fifth metatarsals, as well as two close to the medial arch) can be used to measure gate cycles for normal and flat feet. It has been found that IMU sensors can be placed in four standard anatomical locations (the feet, shank, thigh, and pelvis). A section on computational analysis is included to illustrate how data from the FSR and IMU sensors are processed. Sensor data is typically sampled at 100 Hz, and wireless systems use a range of microcontrollers to capture and transmit the signals. The findings reported in this article are expected to help develop efficient and cost-effective gait analysis systems by using an optimal number of FSRs and IMUs.
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Howell DF, Malmgren Fänge A, Rogmark C, Ekvall Hansson E. Rehabilitation Outcomes Following Hip Fracture of Home-Based Exercise Interventions Using a Wearable Device-A Randomized Controlled Pilot and Feasibility Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:3107. [PMID: 36833801 PMCID: PMC9967499 DOI: 10.3390/ijerph20043107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Although hip fractures are common and severe, there is insufficient evidence concerning which type of rehabilitation is most beneficial. The primary aim of this three-armed pilot study was to investigate any difference in outcome after hip fractures between and within groups in terms of balance, everyday activities, and health-related quality of life (HRQoL) following different home rehabilitation interventions. Further aims were to study feasibility and to suggest, if necessary, adjustments to the protocol for a future full randomized controlled trial (RCT). In total, 32 persons were included in this study. The intervention groups underwent the HIFE program with or without an inertial measurement unit, while the control group underwent standard rehabilitation. Within- and between-groups differences in outcomes and feasibility outcomes in terms of recruitment and retention rates were analyzed, and the ability to collect primary and secondary outcomes was assessed. Balance, measured as postural sway, showed no significant improvement in any group. All three groups improved in functional balance (p = 0.011-0.028), activity of daily living (p = 0.012-0.027), and in HRQoL (p = 0.017-0.028). There were no other significant changes within or between the groups. The recruitment rate was 46%, the retention rate was 75%, and the ability to collect outcome measures was 80% at baseline and 64% at follow-up. Based on the results, it is possible to, after adjusting the protocol, conduct a full RCT.
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Affiliation(s)
| | - Agneta Malmgren Fänge
- Department of Health Sciences, Faculty of Medicine, Lund University, P.O. Box 157, 22100 Lund, Sweden
| | - Cecilia Rogmark
- Department of Orthopedics, Skane University Hospital, Lund University, 21428 Malmö, Sweden
| | - Eva Ekvall Hansson
- Department of Health Sciences, Faculty of Medicine, Lund University, P.O. Box 157, 22100 Lund, Sweden
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Zobeiri OA, Wang L, Millar JL, Schubert MC, Cullen KE. Head movement kinematics are altered during balance stability exercises in individuals with vestibular schwannoma. J Neuroeng Rehabil 2022; 19:120. [PMID: 36352393 PMCID: PMC9648040 DOI: 10.1186/s12984-022-01109-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 11/01/2022] [Indexed: 11/11/2022] Open
Abstract
Abstract
Background
Balance stabilization exercises are often prescribed to facilitate compensation in individuals with vestibular schwannoma (VS). However, both the assessment and prescription of these exercises are reliant on clinical observations and expert opinion rather than on quantitative evidence. The aim of this study was to quantify head motion kinematics in individuals with vestibular loss while they performed commonly prescribed balance stability exercises.
Methods
Using inertial measurement units, head movements of individuals with vestibular schwannoma were measured before and after surgical deafferentation and compared with age-matched controls.
Results
We found that individuals with vestibular schwannoma experienced more variable head motion compared to healthy controls both pre- and postoperatively, particularly in absence of visual input, but that there was little difference between preoperative and postoperative kinematic measurements for our vestibular schwannoma group. We further found correlations between head motion kinematic measures during balance exercises, performed in the absence of visual input, and multiple clinical measurements for preoperative VS subjects. Subjects with higher head motion variability also had worse DVA scores, moved more slowly during the Timed up and Go and gait speed tests, and had lower scores on the functional gait assessment. In contrast, we did not find strong correlations between clinical measures and postoperative head kinematics for the same VS subjects.
Conclusions
Our data suggest that further development of such metrics based on the quantification of head motion has merit for the assessment and prescription of balance exercises, as demonstrated by the calculation of a “kinematic score” for identifying the most informative balance exercise (i.e., “Standing on foam eyes closed”).
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Braun T, Wiegard A, Geritz J, Hansen C, Tan KE, Hildesheim H, Kudelka J, Maetzler C, Welzel J, Romijnders R, Maetzler W, Bergmann P. Association between heart failure severity and mobility in geriatric patients: an in-clinic study with wearable sensors. J Geriatr Cardiol 2022; 19:660-674. [PMID: 36284678 PMCID: PMC9548060 DOI: 10.11909/j.issn.1671-5411.2022.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND Individuals with heart failure (HF) frequently experience limitations in mobility, but specific aspects of these limitations are not well understood. This study investigated the association of HF severity, based on the New York Heart Association (NYHA) classes, with digital mobility outcomes (DMOs) and handgrip strength in older inpatients with HF. METHODS For this explorative analysis, hospital admission and discharge data from an ongoing, prospective cohort study were used. The sample included older participants with HF and a sub-sample of heart-healthy individuals. Participants were equipped with a wearable inertial measurement unit (IMU) system during mobility performance (balancing, sit-to-stand transfer, walking). We analyzed the association between 17 DMOs and HF severity with multiple linear regression models. RESULTS The total sample included 61 older participants (65-97 years of age, 55.7% female). Of all DMOs, only sway path in a semi-tandem stance position (m/s²) showed a relevant association with NYHA classes (admission: β = -0.28, P = 0.09; discharge: β = -0.39, P = 0.02). Handgrip strength showed a trend towards a significant association (admission: β = -0.15, P = 0.10; discharge: β = -0.15, P = 0.19). CONCLUSIONS This is to our best knowledge the first analysis on the association of HF severity and IMU-based DMOs. Sway path and handgrip strength may be the most promising parameters for monitoring mobility aspects in treatment of HF.
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Affiliation(s)
- Tobias Braun
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
- Department of Applied Health Sciences, Division of Physiotherapy, Hochschule für Gesundheit (University of Applied Sciences), Gesundheitscampus 6-8, 44801 Bochum, Germany
- HSD Hochschule Döpfer (University of Applied Sciences), Waidmarkt 3 und 9, 50676 Cologne, Germany
| | - Anna Wiegard
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Johanna Geritz
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Clint Hansen
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Kim Eng Tan
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Hanna Hildesheim
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Jennifer Kudelka
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Corina Maetzler
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Julius Welzel
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Robbin Romijnders
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Walter Maetzler
- Department of Neurology, Kiel University, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - Philipp Bergmann
- Department of Internal Medicine I, Christian-Albrechts-University of Kiel, Arnold-Heller-Straße 3, 24105 Kiel, Germany
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Warmerdam E, Schumacher M, Beyer T, Nerdal PT, Schebesta L, Stürner KH, Zeuner KE, Hansen C, Maetzler W. Postural Sway in Parkinson's Disease and Multiple Sclerosis Patients During Tasks With Different Complexity. Front Neurol 2022; 13:857406. [PMID: 35422747 PMCID: PMC9001932 DOI: 10.3389/fneur.2022.857406] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/09/2022] [Indexed: 11/13/2022] Open
Abstract
Neurological diseases are associated with static postural instability. Differences in postural sway between neurological diseases could include "conceptual" information about how certain symptoms affect static postural stability. This information might have the potential to become a helpful aid during the process of finding the most appropriate treatment and training program. Therefore, this study investigated static postural sway performance of Parkinson's disease (PD) and multiple sclerosis (MS) patients, as well as of a cohort of healthy adults. Three increasingly difficult static postural tasks were performed, in order to determine whether the postural strategies of the two disease groups differ in response to the increased complexity of the balance task. Participants had to perform three stance tasks (side-by-side, semi-tandem and tandem stance) and maintain these positions for 10 s. Seven static sway parameters were extracted from an inertial measurement unit that participants wore on the lower back. Data of 47 healthy adults, 14 PD patients and 8 MS patients were analyzed. Both healthy adults and MS patients showed a substantial increase in several static sway parameters with increasingly complex stance tasks, whereas PD patients did not. In the MS patients, the observed substantial change was driven by large increases from semi-tandem and tandem stance. This study revealed differences in static sway adaptations between PD and MS patients to increasingly complex stance tasks. Therefore, PD and MS patients might require different training programs to improve their static postural stability. Moreover, this study indicates, at least indirectly, that rigidity/bradykinesia and spasticity lead to different adaptive processes in static sway.
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Affiliation(s)
- Elke Warmerdam
- Department of Neurology, Kiel University, Kiel, Germany.,Innovative Implant Development (Fracture Healing), Division of Surgery, Saarland University, Homburg, Germany
| | | | - Thorben Beyer
- Department of Neurology, Kiel University, Kiel, Germany
| | | | | | | | | | - Clint Hansen
- Department of Neurology, Kiel University, Kiel, Germany
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Reliability of IMU-Derived Temporal Gait Parameters in Neurological Diseases. SENSORS 2022; 22:s22062304. [PMID: 35336475 PMCID: PMC8955629 DOI: 10.3390/s22062304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 12/25/2022]
Abstract
Evaluating gait is part of every neurological movement disorder assessment. Generally, the physician assesses the patient based on their experience, but nowadays inertial measurement units (IMUs) are also often integrated in the assessment. Instrumented gait analysis has a longstanding tradition and temporal parameters are used to compare patient groups or trace disease progression over time. However, the day-to-day variability needs to be considered especially in specific patient cohorts. The aim of the study was to examine day-to-day variability of temporal gait parameters of two experimental conditions in a cohort of neurogeriatric patients using data extracted from a lower back-worn IMU. We recruited 49 participants (24 women (age: 78 years ± 6 years, BMI = 25.1 kg/m2 and 25 men (age: 77 years ± 6 years, BMI = 26.5 kg/m2)) from the neurogeriatric ward. Two gait distances (4 m and 20 m) were performed during the first session and repeated the following day. To evaluate reliability, the Intraclass Correlation Coefficient (ICC2,k) and minimal detectable change (MDC) were calculated for the number of steps, step time, stride time, stance time, swing time, double limb support time, double limb support time variability, stride time variability and stride time asymmetry. The temporal gait parameters showed poor to moderate reliability with mean ICC and mean MDC95% values of 0.57 ± 0.18 and 52% ± 53%, respectively. Overall, only four out of the nine computed temporal gait parameters showed high relative reliability and good absolute reliability values. The reliability increased with walking distance. When only investigating steady-state walking during the 20 m walking condition, the relative and absolute reliability improved again. The most reliable parameters were swing time, stride time, step time and stance time. Study results demonstrate that reliability is an important factor to consider when working with IMU derived gait parameters in specific patient cohorts. This advocates for a careful parameter selection as not all parameters seem to be suitable when assessing gait in neurogeriatric patients.
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Corrà MF, Vila-Chã N, Sardoeira A, Hansen C, Sousa AP, Reis I, Sambayeta F, Damásio J, Calejo M, Schicketmueller A, Laranjinha I, Salgado P, Taipa R, Magalhães R, Correia M, Maetzler W, Maia LF. Peripheral neuropathy in Parkinson's disease: prevalence and functional impact on gait and balance. Brain 2022; 146:225-236. [PMID: 35088837 PMCID: PMC9825570 DOI: 10.1093/brain/awac026] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/03/2021] [Accepted: 12/21/2021] [Indexed: 01/12/2023] Open
Abstract
Peripheral neuropathy is a common problem in patients with Parkinson's disease. Peripheral neuropathy's prevalence in Parkinson's disease varies between 4.8-55%, compared with 9% in the general population. It remains unclear whether peripheral neuropathy leads to decreased motor performance in Parkinson's disease, resulting in impaired mobility and increased balance deficits. We aimed to determine the prevalence and type of peripheral neuropathy in Parkinson's disease patients and evaluate its functional impact on gait and balance. A cohort of consecutive Parkinson's disease patients assessed by movement disorders specialists based on the UK Brain Bank criteria underwent clinical, neurophysiological (nerve conduction studies and quantitative sensory testing) and neuropathological (intraepidermal nerve fibre density in skin biopsy punches) evaluation to characterize the peripheral neuropathy type and aetiology using a cross-sectional design. Gait and balance were characterized using wearable health-technology in OFF and ON medication states, and the main parameters were extracted using validated algorithms. A total of 99 Parkinson's disease participants with a mean age of 67.2 (±10) years and mean disease duration of 6.5 (±5) years were assessed. Based on a comprehensive clinical, neurophysiological and neuropathological evaluation, we found that 40.4% of Parkinson's disease patients presented peripheral neuropathy, with a predominance of small fibre neuropathy (70% of the group). In the OFF state, the presence of peripheral neuropathy was significantly associated with shorter stride length (P = 0.029), slower gait speed (P = 0.005) and smaller toe-off angles (P = 0.002) during straight walking; significantly slower speed (P = 0.019) and smaller toe-off angles (P = 0.007) were also observed during circular walking. In the ON state, the above effects remained, albeit moderately reduced. With regard to balance, significant differences between Parkinson's disease patients with and without peripheral neuropathy were observed in the OFF medication state during stance with closed eyes on a foam surface. In the ON states, these differences were no longer observable. We showed that peripheral neuropathy is common in Parkinson's disease and influences gait and balance parameters, as measured with mobile health-technology. Our study supports that peripheral neuropathy recognition and directed treatment should be pursued in order to improve gait in Parkinson's disease patients and minimize balance-related disability, targeting individualized medical care.
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Affiliation(s)
- Marta Francisca Corrà
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal,Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal,Institute for Research and Innovation in Health (i3s), University of Porto, 4200-135 Porto, Portugal
| | - Nuno Vila-Chã
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Ana Sardoeira
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Clint Hansen
- Department of Neurology, Kiel University, 24118 Kiel, Germany
| | - Ana Paula Sousa
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Inês Reis
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Firmina Sambayeta
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Joana Damásio
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Margarida Calejo
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Andreas Schicketmueller
- Institute for Medical Engineering and Research Campus STIMULATE, University of Magdeburg, 39106 Magdeburg, Germany,HASOMED GmbH, 39114 Magdeburg, Germany
| | - Inês Laranjinha
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Paula Salgado
- Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Ricardo Taipa
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal,Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Rui Magalhães
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal,Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Manuel Correia
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal,Centro Hospitalar Universitário do Porto (CHUPorto), 4099-001 Porto, Portugal
| | - Walter Maetzler
- Department of Neurology, Kiel University, 24118 Kiel, Germany
| | - Luís F Maia
- Correspondence to: Luís F. Maia Department of Neurology Centro Hospitalar Universitario do Porto (CHUPorto) Largo do Prof. Abel Salazar, 4099-001 Porto, Portugal E-mail:
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12
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Khan NC, Pandey V, Gajos KZ, Gupta AS. Free-Living Motor Activity Monitoring in Ataxia-Telangiectasia. THE CEREBELLUM 2021; 21:368-379. [PMID: 34302287 PMCID: PMC8302464 DOI: 10.1007/s12311-021-01306-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 07/08/2021] [Indexed: 11/12/2022]
Abstract
With disease-modifying approaches under evaluation in ataxia-telangiectasia and other ataxias, there is a need for objective and reliable biomarkers of free-living motor function. In this study, we test the hypothesis that metrics derived from a single wrist sensor worn at home provide accurate, reliable, and interpretable information about neurological disease severity in children with A-T. A total of 15 children with A-T and 15 age- and sex-matched controls wore a sensor with a triaxial accelerometer on their dominant wrist for 1 week at home. Activity intensity measures, derived from the sensor data, were compared with in-person neurological evaluation on the Brief Ataxia Rating Scale (BARS) and performance on a validated computer mouse task. Children with A-T were inactive the same proportion of each day as controls but produced more low intensity movements (p < 0.01; Cohen’s d = 1.48) and fewer high intensity movements (p < 0.001; Cohen’s d = 1.71). The range of activity intensities was markedly reduced in A-T compared to controls (p < 0.0001; Cohen’s d = 2.72). The activity metrics correlated strongly with arm, gait, and total clinical severity (r: 0.71–0.87; p < 0.0001), correlated with specific computer task motor features (r: 0.67–0.92; p < 0.01), demonstrated high reliability (r: 0.86–0.93; p < 0.00001), and were not significantly influenced by age in the healthy control group. Motor activity metrics from a single, inexpensive wrist sensor during free-living behavior provide accurate and reliable information about diagnosis, neurological disease severity, and motor performance. These low-burden measurements are applicable independent of ambulatory status and are potential digital behavioral biomarkers in A-T.
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Affiliation(s)
- Nergis C Khan
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,School of Medicine, Stanford University, Stanford, CA, USA
| | - Vineet Pandey
- Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, USA
| | - Krzysztof Z Gajos
- Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, USA
| | - Anoopum S Gupta
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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