Spinal cordPub Date : 2024-02-12DOI: 10.1038/s41393-024-00959-w
Sarah Hartley, Raphaëlla Daville, Levy Jonathan, Véronique Raverot, Julie Di Maria, Isabelle Bossard, Djamel Bensmail, M. A. Quera-Salva, Antoine Leotard
{"title":"Melatonin secretion and sleep disorders in patients with spinal cord injuries","authors":"Sarah Hartley, Raphaëlla Daville, Levy Jonathan, Véronique Raverot, Julie Di Maria, Isabelle Bossard, Djamel Bensmail, M. A. Quera-Salva, Antoine Leotard","doi":"10.1038/s41393-024-00959-w","DOIUrl":"10.1038/s41393-024-00959-w","url":null,"abstract":"Prospective observational study. To evaluate melatonin secretion, daytime sleepiness and sleep disorders in patients with spinal cord injuries (SCI), and their association with lesion level. Specialized neuro rehabilitation hospital in France Prospective observational study of patients aged over 18 hospitalized in for spinal cord injury. Sleep quality was measured with the Pittsburgh Sleep Quality Index (PQSI), daytime sleepiness with the Epworth Sleepiness scale (ESS), and melatonin secretion by 24 h urinary dosage of 6-sulphatoxy-melatonin. 213 patients were screened, 21 patients were included: 17 complete (AIS A) and 4 lesions (AIS B), 76% of traumatic origin with 12 tetraplegic and 9 paraplegic, mean 10 (range 0.5–40) years after injury. Mean age was 46.8 ± 14.7 years, mean BMI 23.56 ± 4.1 and men outnumbered women (15 vs 6). Melatonin secretion was analyzed by 24 h secretion and by secretion profile. Comparing retained vs abolished secretion, only 23% (4/17) of patients with a lesion above T8 retained melatonin secretion, compared to 80% (4/5) with a lesion below T8 (p = 0.022). Non significant differences were found in secretion profile in patients who retained secretion: no patient with a lesion above T8 had a normal secretion profile compared to 50% with a lesion below T8 and in the impact of partial vs total lesions above T8 in whom 17% (2/12) of complete ASIA-A lesions and 50% (2/4) of incomplete lesions retained secretion. Lesions of the spinal cord above T8 are strongly associated with abolition of melatonin secretion.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 4","pages":"143-148"},"PeriodicalIF":2.2,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139724022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2024-02-07DOI: 10.1038/s41393-023-00956-5
Nicolaj J. Holm, Tom Møller, Lone H. Schou, Fin Biering-Sørensen
{"title":"Monitoring outcome measures for cardiometabolic disease during rehabilitation and follow-up in people with spinal cord injury","authors":"Nicolaj J. Holm, Tom Møller, Lone H. Schou, Fin Biering-Sørensen","doi":"10.1038/s41393-023-00956-5","DOIUrl":"10.1038/s41393-023-00956-5","url":null,"abstract":"Controlled pragmatic intervention with follow-up. To describe cardiometabolic risk outcomes after a pragmatic intervention implemented into standard spinal cord injury (SCI) rehabilitation. Inpatient SCI rehabilitation in East-Denmark. Inpatients, >18 years, having sustained a SCI within the last 12 months at admission to rehabilitation, regardless of etiology, neurological level or completeness of the lesion or mobility status. Patient education on health promotion was guided by evidence and included feedback on peak oxygen uptake (VO2peak) (primary outcome measure), body mass index (BMI), Dual energy X-ray absorptiometry and metabolic profile (secondary outcome measures). Paired t-tests, non-parametric tests and Analysis of Variance (ANOVA) were used for analyzes. VO2peak and BMI were compared to historical data. VO2peak increased significantly from admission to discharge but did not exceed historical data despite a minimal clinical important difference. BMI decreased significantly during rehabilitation (p < 0.001) followed by a significant increase after discharge (p = 0.006). There was a trend that people with American Spinal Injury Association Impairment Scale (AIS) D SCI increased lean mass to nearly normal values. Criteria for pre-diabetes or diabetes were present in 28.5% and dyslipidemia in 45% of the participants 44.2 days after time of injury. Despite improvements during rehabilitation, outcome measures were worse than recommended, and most outcome measures worsened at follow up, even in people with an AIS D SCI. Meaningful support regarding exercise and diet when tackling altered life circumstances is needed after discharge.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 3","pages":"125-132"},"PeriodicalIF":2.2,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139703491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2024-01-29DOI: 10.1038/s41393-024-00958-x
Ramona M. Zeh, Marija Glisic, Simona Capossela, Alessandro Bertolo, Ezra Valido, Xavier Jordan, Margret Hund-Georgiadis, Jürgen Pannek, Inge Eriks-Hoogland, Gerold Stucki, Jivko Stoyanov
{"title":"The Swiss Spinal Cord Injury Cohort Study (SwiSCI) biobank: from concept to reality","authors":"Ramona M. Zeh, Marija Glisic, Simona Capossela, Alessandro Bertolo, Ezra Valido, Xavier Jordan, Margret Hund-Georgiadis, Jürgen Pannek, Inge Eriks-Hoogland, Gerold Stucki, Jivko Stoyanov","doi":"10.1038/s41393-024-00958-x","DOIUrl":"10.1038/s41393-024-00958-x","url":null,"abstract":"To describe the concept, establishment and the operationalization of the biobank of the Swiss Spinal Cord Injury Cohort Study (SwiSCI), the available biosamples, and demographic and clinical characteristics of study participants. The SwiSCI biobank is a platform for research within SwiSCI. It collects and processes serum, plasma, PBMCs, RNA, DNA, and urine from three rehabilitation centers. Samples are collected at admission to first rehabilitation and at discharge. Additionly, the biobank provides services to projects nested in SwiSCI or otherclinical trials among Spinal Cord Injury population. Descriptive statistics were used for an overview of available biosamples, study participant characteristics, and comparison of the participating centers. Between the SwiSCI biobank establishment on June 27th, 2016, and October 19th, 2023, the SwiSCI Study has obtained informed consent from 524 individuals. Of these, 315 (60.1%) have agreed to donate biospecimens to the biobank. The average age of the contributors was 54 years (range: 38–65), with the majority being male (80%). Most participants suffered from traumatic injuries (66%) and were classified as paraplegic (64%). Approximately 80% presented with motor and sensory-incomplete SCI. The median Spinal Cord Independence Measure (SCIM) score was 31 (Interquartile Range: 19–58). The proportion of individuals providing paired biosamples at two distinct time points ranged from 63% (for RNA) to 65% (for urine and urine sediment). The SwiSCI biobank is a unique platform designed to serve as a basis for collaborative SCI research, including multi-omics approaches. The longitudinal collection of biospecimens and cryopreservation of multiple aliquots for each participant are fundamental for scrutinizing the temporal associations, ensuring research reproducibility, and achieving an adequate sample size for future investigations.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 3","pages":"117-124"},"PeriodicalIF":2.2,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41393-024-00958-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139574857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2024-01-08DOI: 10.1038/s41393-023-00950-x
Christian Schuld, EMSCI study group, Steven Kirshblum, Keith Tansey, ASIA International Standards Committee, Rüdiger Rupp
{"title":"The revised zone of partial preservation (ZPP) in the 2019 International Standards for Neurological Classification of Spinal Cord Injury: ZPP applicability in incomplete injuries","authors":"Christian Schuld, EMSCI study group, Steven Kirshblum, Keith Tansey, ASIA International Standards Committee, Rüdiger Rupp","doi":"10.1038/s41393-023-00950-x","DOIUrl":"10.1038/s41393-023-00950-x","url":null,"abstract":"Consensus process. To provide a reference for the Zone(s) of Partial Preservation (ZPP) in the 2019 International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) and analyze the initial impact of applicability of the revised ZPPs. Revisions include the use of ZPPs in selected incomplete injuries (in addition to prior use in sensorimotor complete injuries). Specifically, the revised motor ZPPs are applicable bilaterally in injuries with absent voluntary anal contraction (VAC) and the revised sensory ZPP for a given side is applicable if deep anal pressure (DAP), light touch and pin prick sensation in S4-5 are absent on that side. Committee with 16 ISNCSCI experts and datasets from the European Multicenter Study about Spinal Cord Injury (EMSCI). Occurrence frequencies of applicable ZPPs were determined in an EMSCI cohort consisting of two ISNCSCI examinations from 665 individuals with traumatic SCI. Motor ZPPs were derived in 35.2% of all datasets of incomplete injuries, while sensory ZPPs are much less frequent (1.0%). Motor ZPPs are applicable in all American Spinal Injury Association Impairment Scale (AIS) B datasets (mean ZPP length: 0.9 ± 1.0 segments), in 55.4% of all AIS C datasets (ZPP length: 11.8 ± 8.2 segments) and in 9.9% of the AIS D datasets (ZPP length: 15.4 ± 7.9 segments). The revised ZPP allows for determining motor ZPPs in approximately 1/3 of all incomplete injuries. The broadened applicability enables the use of ZPPs beyond complete injuries for complementary description of residual functions in more individuals. N/A","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 2","pages":"79-87"},"PeriodicalIF":2.2,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41393-023-00950-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139404428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2024-01-05DOI: 10.1038/s41393-023-00955-6
Christian Bødker, Maja F. Riisbøl, Benjamin Y. A. Khan, Rikke M. Hansen, Kaare E. Severinsen
{"title":"Urologic surveillance of persons with spinal cord injuries – a scoping review","authors":"Christian Bødker, Maja F. Riisbøl, Benjamin Y. A. Khan, Rikke M. Hansen, Kaare E. Severinsen","doi":"10.1038/s41393-023-00955-6","DOIUrl":"10.1038/s41393-023-00955-6","url":null,"abstract":"Scoping review - standardized according to the Equator-network and the Prisma-Statement guidelines with PRISMA-ScR. Review the literature concerning surveillance of the urinary- and renal systems in persons with spinal cord injuries (SCI). Specifically, to assess: #1 the usability of non-invasive and non-ultrasound methods, #2 the usage of systematic ultrasound surveillance #3 patient characteristics which predispose to urinary tract abnormalities (UTA) or renal function deterioration. The literature assessed was collected from PubMed by creating a search string comprised of three main phrases: #1 persons with SCI, #2 kidney function and #3 surveillance program. The final search resulted in 685 studies. Eligibility criteria were defined prior to the search to assess the studies systematically. Four studies found serum cystatin C (s-cysC) to be accurate in estimating the glomerular filtration rate in persons with SCI. One study found no difference in UTA between surveillance adherent and surveillance non-adherent persons up to 30 years post injury. UTA and especially renal function deterioration seems rare the first 15 years post-injury. Non-traumatic SCI, time since injury, high detrusor pressure, upper urinary tract dilation, vesicourethral reflux, trabeculated bladder, history of calculi removal are significant risk factors for developing UTA or renal function deterioration. Measurements of S-cysC should be considered to replace serum creatinine in most cases. Surveillance non-adherent persons are not at higher risk of developing UTA. A selective surveillance based on a baseline risk profile may be beneficial for patients and caretakers.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 3","pages":"91-98"},"PeriodicalIF":2.2,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139102594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2024-01-03DOI: 10.1038/s41393-023-00948-5
Jasmin Mangold, Anestis Divanoglou, James W. Middleton, Sophie Jörgensen
{"title":"The Swedish version of the Moorong Self-Efficacy Scale (s-MSES) – translation process and psychometric properties in a community setting","authors":"Jasmin Mangold, Anestis Divanoglou, James W. Middleton, Sophie Jörgensen","doi":"10.1038/s41393-023-00948-5","DOIUrl":"10.1038/s41393-023-00948-5","url":null,"abstract":"Psychometric study. To i) describe the translation process and ii) explore the data completeness, targeting, reliability and aspects of validity of the Swedish version of Moorong Self-Efficacy Scale (s-MSES). Community rehabilitation program. Ninety-two program participants and 42 peer mentors with spinal cord injury (SCI) in Active Rehabilitation training programs (enrolled in the International Project for the Evaluation of activE Rehabilitation (Inter-PEER)) were included. The s-MSES was completed online, once for program participants and twice for peer mentors. The translation process was based on guidelines and involved researchers, clinicians and consumers. Minor linguistic adaptations were made. Ninety-one percent obtained a total score. As expected, peer mentors exhibited ceiling effects in all subscales. Cronbach´s alpha for the total scale was 0.92 (subscales 0.74–0.83). The intraclass correlation coefficient was excellent for the total and subscale scores (0.78–0.91). The s-MSES exhibited sensitivity to changes and there were no systematic changes between evaluation points. The s-MSES correlated significantly and positively with life satisfaction and resilience, and negatively with depression/anxiety. The s-MSES was translated through a rigorous, consumer-involved process ensuring accurate linguistic translation and cultural adaptation. Our results support the data completeness, targeting, reliability and aspects of validity of the s-MSES. The s-MSES can thus be considered suitable to assess self-efficacy in persons with SCI in community rehabilitation settings. The now available Swedish version of the MSES will facilitate national research, clinical evaluations and international comparisons. Not applicable.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 2","pages":"71-78"},"PeriodicalIF":2.2,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139082982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2023-12-30DOI: 10.1038/s41393-023-00953-8
Reuben Escorpizo, Shelly Naud, Marcel W. M. Post, Urban Schwegler, Julia Engkasan, Annette Halvorsen, Timothy Geraghty, Cristina Sadowsky
{"title":"Relationship between employment and quality of life and self-perceived health in people with spinal cord injury: an international comparative study based on the InSCI Community Survey","authors":"Reuben Escorpizo, Shelly Naud, Marcel W. M. Post, Urban Schwegler, Julia Engkasan, Annette Halvorsen, Timothy Geraghty, Cristina Sadowsky","doi":"10.1038/s41393-023-00953-8","DOIUrl":"10.1038/s41393-023-00953-8","url":null,"abstract":"Cross-sectional study. Work-related disability is common in persons with spinal cord injury (SCI). The aims of this study are to examine the associations of employment with self-perceived health (SPH) and quality of life (QoL) across 22 countries and to explore the covariates around employment and SPH and QoL. Community. We analyzed 9494 community-dwelling persons with SCI aged 18–65. We performed an adjusted regression and path analysis. The independent variable was ‘employment’ and the dependent variables were two single items: QoL (very poor to very good) and SPH (excellent to poor). Covariates included the Gross Domestic Product (GDP), education, time since SCI, age, gender, years of employment after SCI, SCI level (paraplegia, tetraplegia), and completeness of SCI. Participants’ mean age was 47, 74% were male, and 63% had paraplegia. We found an association between employment and QoL and SPH. While the magnitude of the effect of employment on QoL did not differ across GDP quartiles, its perceived effect on QoL was found to be significant in the highest GDP quartile. Employment was predictive of good SPH in two GDP quartiles (Q1 and Q4), but significant across all quartiles when predicting poor perceptions, with the magnitude of effect varying significantly. Employment is closely related to QoL and SPH depending on the GDP. We may positively influence the QoL and SPH in the SCI population to promote better employment outcomes by considering the infrastructure and economy.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 3","pages":"110-116"},"PeriodicalIF":2.2,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139069377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2023-12-29DOI: 10.1038/s41393-023-00954-7
Aline J. Hakbijl-van der Wind, Edward J. Rohn, Denise G. Tate, Christel M. C. van Leeuwen, Martin Forchheimer, Janneke M. Stolwijk-Swüste, Susan Charlifue, Julia M. D. Greve, Peter W. New, Marcel W. M. Post
{"title":"The social dimension of quality of life following spinal cord injury or disease: an international ICF-linking study","authors":"Aline J. Hakbijl-van der Wind, Edward J. Rohn, Denise G. Tate, Christel M. C. van Leeuwen, Martin Forchheimer, Janneke M. Stolwijk-Swüste, Susan Charlifue, Julia M. D. Greve, Peter W. New, Marcel W. M. Post","doi":"10.1038/s41393-023-00954-7","DOIUrl":"10.1038/s41393-023-00954-7","url":null,"abstract":"International Classification of Functioning, Disability and Health (ICF) linking study. Analyze cognitive interview data using the ICF as an analytic framework, to examine aspects of social life relevant to quality of life (QoL) according to people with spinal cord injury or disease (SCI/D). This study builds upon results of an international study about the cross-cultural validity of the International SCI QoL Basic Data Set (QoL-BDS). Four specialized outpatient clinics in SCI/D rehabilitation, from the US, Brazil and Australia. Analysis of qualitative data from 39 cognitive interviews with SCI/D patients at least one year post onset. Participants were asked to define their concept of QoL, overall life satisfaction, physical health and psychological health, and other relevant matters. Four independent researchers coded text fragments related to the items, and fragments were linked to ICF chapters d6–d9, following established linking rules. The proportion of text referring to social life was 35.8% (definition QoL), 24.9% (QoL life as whole), 6.0% (physical health) and 34.9% (psychological health). The most frequent ICF categories were d760 Family relationships, d770 Intimate relationships and d920 Recreation and leisure. Most frequent responded social topics to the ‘other issues’ item were d770 Intimate relationships, d760 Formal relationships, and d870 Economic self-sufficiency. The importance of social life aspects to the QoL was highlighted based on responses of SCI/D patients, clearly demonstrated through the ICF linking process. Adding a satisfaction with social life item to the QoL-BDS has made this instrument a more comprehensive measure.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 3","pages":"104-109"},"PeriodicalIF":2.2,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139069563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2023-12-29DOI: 10.1038/s41393-023-00952-9
Wen-Juan Ni, Xiao-Min Leng
{"title":"Programmed cell death 10 can be used as a potential biomarker for ankylosing spondylitis diagnosis and treatment","authors":"Wen-Juan Ni, Xiao-Min Leng","doi":"10.1038/s41393-023-00952-9","DOIUrl":"10.1038/s41393-023-00952-9","url":null,"abstract":"Diagnostic study. Programmed cell death 10 (PDCD10) is a new versatile molecule involved in signal transduction regulation in angiogenesis and tumors. The potential of using it as a biomarker for the diagnosis of ankylosing spondylitis (AS) is still unknown. University laboratory in Gannan Medical University, China. Expression of PDCD10 was analyzed using clinical samples of patients with AS and Gene Expression Omnibus (GEO) data GDS5231. To explore its function, PDCD10 was upregulated and downregulated in synovial cells. Spearman analysis was used to study the association between PDCD10 and the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and the modified Stoke Ankylosing Spondylitis Spinal Score (mSASSS). The Receiver operating characteristic (ROC) curve was applied to evaluate the sensitivity and specificity of PDCD10. Expression of PDCD10 was upregulated in patients with AS and it is capable of promoting the calcification of synovial cells. A positive association between PDCD10 and the BASDAI and the mSASSS was observed. The area under the ROC curve (AUC) of PDCD10 was 82% with a 95% confidence interval of [0.772, 0.868]. PDCD10 is upregulated in patients with AS and it can promote the calcification of synovial cells in vitro. PDCD10 is positively associated with outcome parameters of AS. ROC analysis of PDCD10 suggests that it can be used as a biomarker for the diagnosis and treatment of AS.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 3","pages":"99-103"},"PeriodicalIF":2.2,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139069621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Spinal cordPub Date : 2023-12-29DOI: 10.1038/s41393-023-00951-w
Yuming Lei, Victoria Rios, Jessica Ji, Brandon Duhon, Hunter Boyd, Yunhan Xu
{"title":"Quantifying unsupported sitting posture impairments in humans with cervical spinal cord injury using a head-mounted IMU sensor","authors":"Yuming Lei, Victoria Rios, Jessica Ji, Brandon Duhon, Hunter Boyd, Yunhan Xu","doi":"10.1038/s41393-023-00951-w","DOIUrl":"10.1038/s41393-023-00951-w","url":null,"abstract":"Cross-sectional study. To evaluate unsupported sitting posture impairments and identify postural regulatory strategies in cervical spinal cord injury (cSCI) participants via a head-mounted IMU sensor. A research lab in the United States of America. 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). 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. 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.","PeriodicalId":21976,"journal":{"name":"Spinal cord","volume":"62 2","pages":"65-70"},"PeriodicalIF":2.2,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139069212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}