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Rigot SK, Maronati R, Lettenberger A, O'Brien MK, Alamdari K, Hoppe-Ludwig S, McGuire M, Looft JM, Wacek A, Cave J, Sauerbrey M, Jayaraman A. Validation of Proprietary and Novel Step-counting Algorithms for Individuals Ambulating With a Lower Limb Prosthesis. Arch Phys Med Rehabil 2024; 105:546-557. [PMID: 37907160 DOI: 10.1016/j.apmr.2023.10.008] [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: 05/09/2023] [Revised: 10/06/2023] [Accepted: 10/11/2023] [Indexed: 11/02/2023]
Abstract
OBJECTIVE To compare the accuracy and reliability of 10 different accelerometer-based step-counting algorithms for individuals with lower limb loss, accounting for different clinical characteristics and real-world activities. DESIGN Cross-sectional study. SETTING General community setting (ie, institutional research laboratory and community free-living). PARTICIPANTS Forty-eight individuals with a lower limb amputation (N=48) wore an ActiGraph (AG) wGT3x-BT accelerometer proximal to the foot of their prosthetic limb during labeled indoor/outdoor activities and community free-living. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES Intraclass correlation coefficient (ICC), absolute and root mean square error (RMSE), and Bland Altman plots were used to compare true (manual) step counts to estimated step counts from the proprietary AG Default algorithm and low frequency extension filter, as well as from 8 novel algorithms based on continuous wavelet transforms, fast Fourier transforms (FFTs), and peak detection. RESULTS All algorithms had excellent agreement with manual step counts (ICC>0.9). The AG Default and FFT algorithms had the highest overall error (RMSE=17.81 and 19.91 steps, respectively), widest limits of agreement, and highest error during outdoor and ramp ambulation. The AG Default algorithm also had among the highest error during indoor ambulation and stairs, while a FFT algorithm had the highest error during stationary tasks. Peak detection algorithms, especially those using pre-set parameters with a trial-specific component, had among the lowest error across all activities (RMSE=4.07-8.99 steps). CONCLUSIONS Because of its simplicity and accuracy across activities and clinical characteristics, we recommend the peak detection algorithm with set parameters to count steps using a prosthetic-worn AG among individuals with lower limb loss for clinical and research applications.
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Affiliation(s)
- Stephanie K Rigot
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL; Northwestern University, Department of Physical Medicine & Rehabilitation, Chicago, IL
| | - Rachel Maronati
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL
| | - Ahalya Lettenberger
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL; Rice University, Department of Bioengineering, Houston, TX
| | - Megan K O'Brien
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL; Northwestern University, Department of Physical Medicine & Rehabilitation, Chicago, IL
| | - Kayla Alamdari
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL
| | - Shenan Hoppe-Ludwig
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL
| | - Matthew McGuire
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL
| | - John M Looft
- Motion Analysis Laboratory, Department of Prosthetics, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN; Minneapolis Adaptive Design & Engineering (MADE), Department of Research, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN; Division of Rehabilitation Science, University of Minnesota Medical School, Minneapolis, MN
| | - Amber Wacek
- Motion Analysis Laboratory, Department of Prosthetics, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN; Minneapolis Adaptive Design & Engineering (MADE), Department of Research, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN
| | - Juan Cave
- Motion Analysis Laboratory, Department of Prosthetics, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN; Minneapolis Adaptive Design & Engineering (MADE), Department of Research, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN
| | - Matthew Sauerbrey
- Motion Analysis Laboratory, Department of Prosthetics, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN; Minneapolis Adaptive Design & Engineering (MADE), Department of Research, Minneapolis Veterans Affairs Health Care System, Minneapolis, MN
| | - Arun Jayaraman
- Max Näder Center for Rehabilitation Technologies and Outcomes Research, Shirley Ryan AbilityLab, Chicago, IL; Center for Bionic Medicine, Shirley Ryan AbilityLab, Chicago, IL; Northwestern University, Department of Physical Medicine & Rehabilitation, Chicago, IL; Northwestern University, Department of Physical Therapy & Human Movement Sciences, Chicago, IL.
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Brandenbarg P, Hoekstra F, Barakou I, Seves BL, Hettinga FJ, Hoekstra T, van der Woude LHV, Dekker R, Krops LA. Measurement properties of device-based physical activity instruments in ambulatory adults with physical disabilities and/or chronic diseases: a scoping review. BMC Sports Sci Med Rehabil 2023; 15:115. [PMID: 37735403 PMCID: PMC10512652 DOI: 10.1186/s13102-023-00717-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 08/22/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND People with physical disabilities and/or chronic diseases tend to have an inactive lifestyle. Monitoring physical activity levels is important to provide insight on how much and what types of activities people with physical disabilities and/or chronic diseases engage in. This information can be used as input for interventions to promote a physically active lifestyle. Therefore, valid and reliable physical activity measurement instruments are needed. This scoping review aims 1) to provide a critical mapping of the existing literature and 2) directions for future research on measurement properties of device-based instruments assessing physical activity behavior in ambulant adults with physical disabilities and/or chronic diseases. METHODS Four databases (MEDLINE, CINAHL, Web of Science, Embase) were systematically searched from 2015 to April 16th 2023 for articles investigating measurement properties of device-based instruments assessing physical activity in ambulatory adults with physical disabilities and/or chronic diseases. For the majority, screening and selection of eligible studies were done in duplicate. Extracted data were publication data, study data, study population, device, studied measurement properties and study outcome. Data were synthesized per device. RESULTS One hundred three of 21566 Studies were included. 55 Consumer-grade and 23 research-grade devices were studied on measurement properties, using 14 different physical activity outcomes, in 23 different physical disabilities and/or chronic diseases. ActiGraph (n = 28) and Fitbit (n = 39) devices were most frequently studied. Steps (n = 68) was the most common used physical activity outcome. 97 studies determined validity, 11 studies reliability and 6 studies responsiveness. CONCLUSION This scoping review shows a large variability in research on measurement properties of device-based instruments in ambulatory adults with physical disabilities and/or chronic diseases. The variability highlights a need for standardization of and consensus on research in this field. The review provides directions for future research.
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Affiliation(s)
- Pim Brandenbarg
- Department of Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands.
- Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands.
| | - Femke Hoekstra
- Department of Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
- Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
- School of Health and Exercise Sciences, University of British Columbia Okanagan, Kelowna, BC, V1V 1V7, Canada
| | - Ioulia Barakou
- Department of Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
| | - Bregje L Seves
- Department of Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
- Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
| | - Florentina J Hettinga
- Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle, NE1 8ST, UK
| | - Trynke Hoekstra
- Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
- Department of Health Sciences and Amsterdam Public Health Research Institute, Vrije Universiteit Amsterdam, Amsterdam, 1081 BT, The Netherlands
| | - Lucas H V van der Woude
- Department of Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
- Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
| | - Rienk Dekker
- Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
| | - Leonie A Krops
- Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, 9700 RB, The Netherlands
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Bajracharya AR, Seng-iad S, Sasaki K, Guerra G. Cross-Cultural Adaptation and Validation of The Nepali Version of The Prosthetic Limb Users Survey of Mobility Short-Form (Plus-M™/Nepali-12Sf) In Lower Limb Prosthesis Users. CANADIAN PROSTHETICS & ORTHOTICS JOURNAL 2023; 6:41310. [PMID: 38873005 PMCID: PMC11168605 DOI: 10.33137/cpoj.v6i1.41310] [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: 06/27/2023] [Accepted: 08/12/2023] [Indexed: 06/15/2024] Open
Abstract
BACKGROUND Objective mobility measurement of Nepali prosthesis users is lacking. OBJECTIVE The objective of this study was to cross-culturally adapt, translate and evaluate construct validity of the Prosthetic Limb Users Survey of Mobility (PLUS-M™/Nepali-12 Short Form (SF)) instrument in lower limb prosthesis users residing in Nepal. METHODOLOGY Two forward translations, review and reconciliation, back translation, expert review, developer review to create the PLUS-M™/Nepali-12SF. Psychometric testing for internal consistency, test-retest reliability and construct validity against the Two-Minute Walk Test (2MWT) and Amputee Mobility Predictor with Prosthesis (AMPPRO) were performed on sixty-six lower limb prosthesis users. FINDINGS The majority of populations were with transtibial amputation 45 (68%), with transfemoral amputation 15 (23%), with knee disarticulation 5 (7.5%) and with syme's amputation 1 (1.5%). The most common cause of amputation among the population was trauma and the least was tumor. Chronbach's alpha for the PLUS-M™/Nepali-12SF was 0.90, mean T-Score was 52.90, test-retest intraclass correlation coefficient (ICC) was 0.94 (95% confidence interval 0.90-0.96). Construct validity with the 2MWT was good (r = 0.62, p< 0.001) and moderately positive with the AMPPRO (r = 0.57, p< 0.001). CONCLUSION Our research evidenced that the PLUS-M™/Nepali-12SF had excellent reproducibility. The significance of this work is that it may allow for the measurement of mobility in austere locations of Nepal.
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Affiliation(s)
- AR Bajracharya
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - S Seng-iad
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - K Sasaki
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | - G Guerra
- Department of Exercise and Sport Science, St. Mary's University, San Antonio, Texas, 78210, USA
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Demeco A, Frizziero A, Nuresi C, Buccino G, Pisani F, Martini C, Foresti R, Costantino C. Gait Alteration in Individual with Limb Loss: The Role of Inertial Sensors. SENSORS (BASEL, SWITZERLAND) 2023; 23:1880. [PMID: 36850475 PMCID: PMC9964846 DOI: 10.3390/s23041880] [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: 12/08/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Amputation has a big impact on the functioning of patients, with negative effects on locomotion and dexterity. In this context, inertial measurement units represent a useful tool in clinical practice for motion analysis, and in the development of personalized aids to improve a patient's function. To date, there is still a gap of knowledge in the scientific literature on the application of inertial sensors in amputee patients. Thus, the aim of this narrative review was to collect the current knowledge on this topic and stimulate the publication of further research. Pubmed, Embase, Scopus, and Cochrane Library publications were screened until November 2022 to identify eligible studies. Out of 444 results, we selected 26 articles focused on movement analysis, risk of falls, energy expenditure, and the development of sensor-integrated prostheses. The results showed that the use of inertial sensors has the potential to improve the quality of life of patients with prostheses, increasing patient safety through the detection of gait alteration; enhancing the socio-occupational reintegration through the development of highly technologic and personalized prosthesis; and by monitoring the patients during daily life to plan a tailored rehabilitation program.
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Affiliation(s)
- Andrea Demeco
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy
| | - Antonio Frizziero
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy
| | - Christian Nuresi
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy
| | - Giovanni Buccino
- Division of Neuroscience, IRCCS San Raffaele, University Vita-Salute San Raffaele, 20132 Milan, Italy
| | - Francesco Pisani
- Department of Human Neuroscience, University la Sapienza Rome, 00185 Rome, Italy
| | - Chiara Martini
- Department of Diagnostic, Parma University Hospital, 43126 Parma, Italy
| | - Ruben Foresti
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy
| | - Cosimo Costantino
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy
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Rakbangboon T, Guerra G, Kla-arsa S, Padungjaroen U, Tangpornprasert P, Virulsri C, Sasaki K. High-Level Mobility of Trans-Tibial Prosthesis Users Wearing Commercial and sPace Energy-Storing Prosthetic Feet. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12606. [PMID: 36231917 PMCID: PMC9566704 DOI: 10.3390/ijerph191912606] [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: 08/26/2022] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
UNLABELLED Outcomes of users provided with a commercial ESR Vari-Flex foot (Össur, Reykjavik, Iceland) and a locally designed sPace foot were investigated. Step activity with users' own prosthetic foot compared to the sPace foot was explored. METHODS Eleven individuals with unilateral trans-tibial amputation participated and were provided with an sPace and Vari-Flex foot. Ten- and twenty-meter walk tests (10/20MWT) at comfortable and fast walking speeds (CWS/FWS), the two-minute walk test (2-MWT) and Comprehensive High-Level Activity Mobility Predictor (CHAMP) were administered. A subgroup was provided a pedometer to record their steps over a 7-day period in their own foot and later the sPace. RESULTS The sPace foot performed well in a battery of high-level mobility outcome measures. On CHAMP, participants scored 16.94 ± 5.41 and 16.72 ± 6.09 with the sPace and Vari-Flex feet, respectively. Subgroup testing of step activity showed 4490 ± 3444 steps in users' own feet and 3115 ± 1967 in the sPace foot, p = 0.176. CONCLUSIONS Participants using the sPace foot were capable of performing walking, high-level mobility and activity outcome measures.
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Affiliation(s)
- Thanyaporn Rakbangboon
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Gary Guerra
- Department of Exercise and Sport Science, St. Mary’s University, San Antonio, TX 78228, USA
| | - Saloottra Kla-arsa
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Uthumporn Padungjaroen
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Pairat Tangpornprasert
- Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chanyaphan Virulsri
- Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kazuhiko Sasaki
- Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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Luu L, Pillai A, Lea H, Buendia R, Khan FM, Dennis G. Accurate Step Count with Generalized and Personalized Deep Learning on Accelerometer Data. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22113989. [PMID: 35684609 PMCID: PMC9183122 DOI: 10.3390/s22113989] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/05/2022] [Accepted: 05/20/2022] [Indexed: 05/15/2023]
Abstract
Physical activity (PA) is globally recognized as a pillar of general health. Step count, as one measure of PA, is a well known predictor of long-term morbidity and mortality. Despite its popularity in consumer devices, a lack of methodological standards and clinical validation remains a major impediment to step count being accepted as a valid clinical endpoint. Previous works have mainly focused on device-specific step-count algorithms and often employ sensor modalities that may not be widely available. This may limit step-count suitability in clinical scenarios. In this paper, we trained neural network models on publicly available data and tested on an independent cohort using two approaches: generalization and personalization. Specifically, we trained neural networks on accelerometer signals from one device and either directly applied them or adapted them individually to accelerometer data obtained from a separate subject cohort wearing multiple distinct devices. The best models exhibited highly accurate step-count estimates for both the generalization (96-99%) and personalization (98-99%) approaches. The results demonstrate that it is possible to develop device-agnostic, accelerometer-only algorithms that provide highly accurate step counts, positioning step count as a reliable mobility endpoint and a strong candidate for clinical validation.
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Affiliation(s)
- Long Luu
- Digital Health, Oncology R&D, AstraZeneca, Gaithersburg, MD 20878, USA;
- Correspondence:
| | - Arvind Pillai
- Department of Computer Science, Dartmouth College, Hanover, NH 03755, USA;
| | - Halsey Lea
- Digital Health, Oncology R&D, AstraZeneca, Gaithersburg, MD 20878, USA;
| | - Ruben Buendia
- Biometrics, Late-Stage Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, 43183 Gothenburg, Sweden;
| | - Faisal M. Khan
- AI & Analytics, Data Science & Artificial Intelligence R&D, AstraZeneca, Gaithersburg, MD 20878, USA; (F.M.K.); (G.D.)
| | - Glynn Dennis
- AI & Analytics, Data Science & Artificial Intelligence R&D, AstraZeneca, Gaithersburg, MD 20878, USA; (F.M.K.); (G.D.)
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