|
1
|
Arauz PG, Chavez G, Reinoso V, Ruiz P, Ortiz E, Cevallos C, Garcia G. Influence of a passive exoskeleton on kinematics, joint moments, and self-reported ratings during a lifting task. J Biomech 2024; 162:111886. [PMID: 38043494 DOI: 10.1016/j.jbiomech.2023.111886] [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: 04/03/2023] [Revised: 10/30/2023] [Accepted: 11/27/2023] [Indexed: 12/05/2023]
Abstract
It was found that the Auxivo LiftSuit reduced the load on the back and hip muscles when lifting heavy loads, but its effect on lower body kinematics, joint moments, and self-reported ratings was unclear. The purpose of this study was to assess the effect of this passive lift-exoskeleton design, on lower body kinematics, joint moments, and self-reported ratings during lifting of heavy loads. Twenty healthy subjects performed lifting of heavy loads with and without the exoskeleton under surveillance of a motion capture system. Medium and maximum level adjustments of the exoskeleton, as well as no exoskeleton use were analyzed. Our results indicate significant reduction (p <.01) in pelvis segment tilt and hip flexion ROM with the exoskeleton at maximum level adjustment in males during lifting. Lumbosacral flexion moment ranges were significantly decreased (p <.013) with the exoskeleton at maximum and medium level adjustment in males during lifting. The general user impressions were mostly positive, with participants reporting that it was easier to perform the task with the exoskeleton than without it (p <.0.001), and preferring and recommending the exoskeleton for the task. Although our findings may suggest negative effects of the Auxivo LiftSuit in males and females due to a ROM restriction and loose fit, respectively, it does not mean that the Auxivo LiftSuit is not useful for lifting tasks. Further design improvements are required to allow full range of motion of hips and pelvis, as well to provide better adjustment and level of support in female users.
Collapse
Affiliation(s)
- Paul G Arauz
- Departamento de Ingeniería Mecánica, Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito USFQ, Quito, Ecuador.
| | - Guillermo Chavez
- Departamento de Ingeniería Industrial, Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Valentina Reinoso
- Departamento de Ingeniería Industrial, Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Pablo Ruiz
- Laboratorio de Análisis de Movimiento, CELMOST Vivir, Quito, Ecuador
| | - Esteban Ortiz
- Department of Bioengineering, Rice University, Houston, United States
| | - Carlos Cevallos
- Faculté des Sciences de la Motricité, Université libre de Bruxelles, Bruxelles, Belgium
| | - Gabriela Garcia
- Departamento de Ingeniería Industrial, Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| |
Collapse
|
|
2
|
Green BN, Johnson CD, Crawford C, Tavares PA, Murnaghan K, Haldeman S, Hurwitz EL, Yang H, de Luca K. Association between spinal and non-spinal health conditions reported in epidemiological studies: a scoping review protocol. BMJ Open 2023; 13:e075382. [PMID: 37788930 PMCID: PMC11148655 DOI: 10.1136/bmjopen-2023-075382] [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: 05/05/2023] [Accepted: 09/13/2023] [Indexed: 10/05/2023] Open
Abstract
INTRODUCTION The increasing prevalence of coexisting health conditions poses a challenge to healthcare providers and healthcare systems. Spinal pain (eg, neck and back pain) and spinal pathologies (eg, osteoporotic fractures and degenerative spinal disease) exist concurrently with other non-spinal health conditions (NSHC). However, the scope of what associations may exist among these co-occurring conditions is unclear. Therefore, this scoping review aims to map the epidemiological literature that reports associations between spine-related pain and pathologies (SPPs) and NSHCs. METHODS AND ANALYSIS This scoping review will follow the JBI protocol and Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews. We will systematically search the literature using key words and MeSH terms for SPPs and NSHCs. Terminology/vocabulary for NSHCs will include those for communicable and non-communicable diseases as reported by WHO Global Burden of Disease reports. Five databases will be searched from inception: MEDLINE, EMBASE, APA PsycInfo, Scopus and Web of Science Core Collection. Papers published in English, in peer-reviewed journals, including measures of association between SPPs and NSHCs and using observational epidemiologic study designs will be included. Excluded will be studies of cadaveric, animal or health behaviours; studies with no measures of association and non-observational epidemiologic studies. Results will include the number of studies, the studies that have evaluated the measures of association and the frequency of the studied associations between SPPs and NSHCs. Results will be reported in tables and diagrams. Themes of comorbidities will be synthesised into a descriptive report. ETHICS AND DISSEMINATION This scoping review was deemed exempt from ethics review. This review will provide a comprehensive overview of the literature that reports associations between SPPs and NSHCs to inform future research initiatives and practices. Results will be disseminated through publication in peer-reviewed journals and research conferences. REGISTRATION DETAILS https://osf.io/w49u3.
Collapse
Affiliation(s)
- Bart N Green
- Employer Based Integrated Primary Care Health Centers, Qualcomm Health Center, Stanford Health Care, San Diego, California, USA
- National University of Health Sciences, Lombard, Illinois, USA
| | | | | | | | - Kent Murnaghan
- Canadian Memorial Chiropractic College, Toronto, Ontario, Canada
| | - Scott Haldeman
- Department of Neurology, University of California Irvine, Orange, California, USA
- World Spine Care, Tustin, California, USA
| | - Eric L Hurwitz
- Office of Public Health Studies, Thompson School of Social Work & Public Health, University of Hawaii at Mānoa, Honolulu, Hawaii, USA
| | - Haiou Yang
- University of California, Irvine, California, USA
| | - Katie de Luca
- CQUniversity Brisbane, Brisbane, Queensland, Australia
| |
Collapse
|
|
3
|
Erick P, Sethatho M, Tumoyagae T, Letsholo B, Tapera R, Mbongwe B. Self-Reported Neck and Back Pain among Supermarket Cashiers in Gaborone, Botswana. INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS 2022:1-9. [PMID: 35930246 DOI: 10.1080/10803548.2022.2108653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVE Investigate the prevalence, risk factors and impacts of neck and back pain among supermarkets cashiers in Botswana. MATERIALS AND METHODS A cross-sectional study was conducted among supermarkets cashiers using self-administered. Data were analysed using χ2 and logistic regression models. Statistical significance was assumed at p<0.05. RESULTS A total of 174 supermarkets cashiers participated in this study majority of whom were females (72%). The prevalence of lower back pain was 69%, upper back pain 53% and neck pain 37%. Increasing age was associated with neck 95% CI [1.43-5.15] and upper back 95% CI [1.43-3.60] pain. Cashiers working at low work surface and overreaching for items were 19 and 11 times more likely to report neck 95% CI [1.7-255.9] and lower back 95% CI [1.84-62.1] pain, respectively. Almost 6% of cashiers who reported lower back pain reported considering changing jobs due to pain. CONCLUSIONS More than two-thirds, half and about two-fifths of supermarket cashiers reported lower back, upper back and neck pain, respectively. Individual and work-related factors were associated with neck and/or back pain. Back and neck pain workers' health and wellbeing, their families, workplace productivity and the health care system. To reduce their prevalence and progression, supermarkets should introduce occupational health and safety talks.
Collapse
Affiliation(s)
- Patience Erick
- Department of Environmental Health, University of Botswana, Gaborone, Botswana
| | | | - Tshephang Tumoyagae
- Department of Environmental Health, University of Botswana, Gaborone, Botswana
| | - Baemedi Letsholo
- Department of Environmental Health, University of Botswana, Gaborone, Botswana
| | - Roy Tapera
- Department of Environmental Health, University of Botswana, Gaborone, Botswana
| | - Bontle Mbongwe
- Department of Environmental Health, University of Botswana, Gaborone, Botswana
| |
Collapse
|
|
4
|
Perceived privacy in home office and musculoskeletal complaints: a test of family–work conflict, work–family conflict, and relaxation as mediators. SN SOCIAL SCIENCES 2022; 2:242. [PMID: 36339528 PMCID: PMC9616623 DOI: 10.1007/s43545-022-00553-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 10/18/2022] [Indexed: 11/05/2022]
Abstract
Many employees have had to telework all year during the COVID-19 pandemic. Even though working from home has many advantages, there are also some disadvantages worth to consider. Lack of privacy is a relevant factor when it comes to the development of severe musculoskelatal issues. This study investigated the link between perceived privacy in home office and musculoskeletal complaints (MSCs). Family–work conflict (FWC), work–family conflict (WFC), and relaxation were tested as potential mediators for the relationship between perceived privacy and MSCs. The present study’s questionnaire was filled out by 287 teleworking employees. Hypotheses were tested via multiple mediation analyses examining levels of perceived privacy in home office, and its relationship on MSCs. Furthermore, the underlying effect of FWC, WFC, and MSCs were tested with a structural equation model. As assumed, lack of privacy while working at home was linked to individuals more frequently experiencing MSCs. However, the structural equation model showed no significant mediation effect. Work design efforts must address privacy while employees perform telework at home to prevent MSCs.
Collapse
|
|
5
|
Stochastic Resonance Training Improves Balance and Musculoskeletal Well-Being in Office Workers: A Controlled Preventive Intervention Study. Rehabil Res Pract 2018; 2018:5070536. [PMID: 30302291 PMCID: PMC6158968 DOI: 10.1155/2018/5070536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 08/18/2018] [Indexed: 11/22/2022] Open
Abstract
Sixty-two office workers in a Swiss federal department were randomly assigned to a training and a control group. While the training group was instructed to complete 3 stochastic resonance whole-body vibration (SR-WBV) exercises every week for 4 weeks, the control group received no treatment. During this time all participants answered a daily questionnaire concerning their surefootedness, sense of balance, musculoskeletal well-being, and muscle relaxation. Before and after the 4-week SR-WBV intervention, balance was tested with a single-leg stance on a foam mat of the Balance Error Scoring System (BESS) using a SwayStar™-System measuring Total Angle Area (TotAngArea) and Total Velocity Area (TotVelArea). Multilevel results highlighted a significant increase over time for surefootedness and sense of balance (t = 2.491, p = .016), as well as for musculoskeletal well-being and muscle relaxation (t = 2.538, p = .014) in the training group but not in the control group. Balance tests showed improvement of balance in the training group (TotAngArea: Z = 2.550, p = .011; TotVelArea: Z = 3.334, p = .001) but not in the control group. SR-WBV exercise indicated a high compliance during this study (3.87±0.45 trainings per week) underlining its benefits for the working context. Especially office workers who spend most of their time in sitting position could profit from SR-WBV exercise to improve balance and reduce the risk of falls.
Collapse
|
|
6
|
Faes Y, Banz N, Buscher N, Blasimann A, Radlinger L, Eichelberger P, Elfering A. Acute effects of partial-body vibration in sitting position. World J Orthop 2018; 9:156-164. [PMID: 30254972 PMCID: PMC6153134 DOI: 10.5312/wjo.v9.i9.156] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/09/2018] [Accepted: 05/23/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the acute effects of sinusoidal and stochastic resonance partial-body vibration in sitting position, including muscle activity, heart rate variability, balance and flexibility.
METHODS Fifty healthy participants were assigned randomly to two training conditions: A sinusoidal partial-body vibration (SIN, 8 Hz) or a stochastic resonance partial-body vibration (STOCH, 8 ± 2 Hz). For baseline assessment participants sat on the vibration platform without vibration. Both training conditions consisted of five series of a one-minute vibration training and a one-minute break between them. In this experimental study surface electromyography (EMG) of the erector spinae (ES), one of the back muscles, and heart rate variability (HRV) was measured at baseline and during training. Balance and flexibility were assessed at baseline and immediately after training. Balance was measured with the modified star excursion balance test (mSEBT) and flexibility was assessed through the modified fingertip-to-floor method (mFTF).
RESULTS Paired sample t-test showed a significant increase in balance that was restricted to STOCH (t = -2.22, P = 0.018; SIN: t = -0.09, P = 0.466). An increase in flexibility was also restricted to STOCH (t = 2.65, P = 0.007; SIN: t = 1.41, P = 0.086). There was no significant change of muscle activity in the ES-EMG in STOCH or SIN conditions. In both training conditions, HRV decreased significantly, but remained in a low-load range (STOCH: t = 2.89, P = 0.004; SIN: t = 2.55, P = 0.009).
CONCLUSION In sitting position, stochastic resonance partial-body vibration can improve balance and flexibility while cardiovascular load is low. STOCH can be a valuable training option to people who are unable to stand (e.g., people, who are temporarily wheelchair-bound).
Collapse
Affiliation(s)
- Yannik Faes
- Department of Work and Organizational Psychology, University of Bern, Bern 3012, Switzerland
| | - Nora Banz
- Department of Work and Organizational Psychology, University of Bern, Bern 3012, Switzerland
| | - Nathalie Buscher
- Department of Work and Organizational Psychology, University of Bern, Bern 3012, Switzerland
| | - Angela Blasimann
- Department of Health Professions, Bern University of Applied Sciences, Bern 3008, Switzerland
| | - Lorenz Radlinger
- Department of Health Professions, Bern University of Applied Sciences, Bern 3008, Switzerland
| | - Patric Eichelberger
- Department of Health Professions, Bern University of Applied Sciences, Bern 3008, Switzerland
| | - Achim Elfering
- Department of Work and Organizational Psychology, University of Bern, Bern 3012, Switzerland
| |
Collapse
|
|
7
|
The Global Spine Care Initiative: public health and prevention interventions for common spine disorders in low- and middle-income communities. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2018; 27:838-850. [DOI: 10.1007/s00586-018-5635-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 05/13/2018] [Indexed: 12/11/2022]
|
|
8
|
Elfering A, Cronenberg S, Grebner S, Tamcan O, Müller U. Measuring limitations in activities of daily living: a population-based validation of a short questionnaire. INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS 2017; 25:17-26. [PMID: 29016244 DOI: 10.1080/10803548.2017.1388621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE A newly developed questionnaire assessing limitations in activity of daily living (LADL-Q) that should improve assessment of LADL is tested in a large population-based validation study. METHODS This survey was paper-based. Overall, 16,634 individuals who were representative of the working population in the German-speaking part of Switzerland participated in the study. Item analysis was used the final version of the LADL-Q to four items per subscale that correspond to potential problems in three body regions (back and neck, upper extremities, lower extremities). Analysis included tests for reliability, internal consistency, dimensionality and convergent validity. RESULTS Test-retest reliability coefficients after 2 weeks ranged from 0.82 to 0.99 (Mdn = 0.87), with no item having a coefficient below 0.60. The median item-total coefficients ranged between moderate and good. Correlation coefficients between LADL-Q subscales and three validated clinical instruments (Western Ontario and McMaster Universities osteoarthritis index, shoulder pain disability index, Oswestry) ranged from 0.63 to 0.81. In structural equation modeling the three subscales were significantly related with two important outcomes in occupational rehabilitation: self-reported general health and daily task performance. CONCLUSION The new LADL-Q is a brief, reliable and valid tool for assessment of LADL in studies on musculoskeletal health.
Collapse
Affiliation(s)
- Achim Elfering
- a Department of Work and Organizational Psychology , University of Bern , Switzerland.,b National Centre of Competence in Research, Affective Sciences , University of Geneva , Switzerland
| | - Sonja Cronenberg
- c Institute for Evaluative Research in Orthopedic Surgery , University of Bern , Switzerland.,d University Hospital, University of Basel , Switzerland
| | - Simone Grebner
- a Department of Work and Organizational Psychology , University of Bern , Switzerland
| | - Oezguer Tamcan
- c Institute for Evaluative Research in Orthopedic Surgery , University of Bern , Switzerland
| | - Urs Müller
- c Institute for Evaluative Research in Orthopedic Surgery , University of Bern , Switzerland
| |
Collapse
|
|
9
|
Elfering A, Burger C, Schade V, Radlinger L. Stochastic resonance whole body vibration increases perceived muscle relaxation but not cardiovascular activation: A randomized controlled trial. World J Orthop 2016; 7:758-765. [PMID: 27900274 PMCID: PMC5112346 DOI: 10.5312/wjo.v7.i11.758] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/11/2016] [Accepted: 08/31/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the acute effects of stochastic resonance whole body vibration (SR-WBV), including muscle relaxation and cardiovascular activation.
METHODS Sixty-four healthy students participated. The participants were randomly assigned to sham SR-WBV training at a low intensity (1.5 Hz) or a verum SR-WBV training at a higher intensity (5 Hz). Systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR) and self-reported muscle relaxation were assessed before and immediately after SR-WBV.
RESULTS Two factorial analyses of variance (ANOVA) showed a significant interaction between pre- vs post-SR-WBV measurements and SR-WBV conditions for muscle relaxation in the neck and back [F(1,55) = 3.35, P = 0.048, η2 = 0.07]. Muscle relaxation in the neck and back increased in verum SR-WBV, but not in sham SR-WBV. No significant changes between pre- and post-training levels of SBD, DBD and HR were observed either in sham or verum SR-WBV conditions. With verum SR-WBV, improved muscle relaxation was the most significant in participants who reported the experience of back, neck or shoulder pain more than once a month (P < 0.05).
CONCLUSION A single session of SR-WBV increased muscle relaxation in young healthy individuals, while cardiovascular load was low. An increase in musculoskeletal relaxation in the neck and back is a potential mediator of pain reduction in preventive worksite SR-WBV trials.
Collapse
|
|
10
|
Prudhvi K, Murthy KRV. Self-reported musculoskeletal pain among dentists in Visakhapatnam: A 12-month prevalence study. Indian J Dent Res 2016; 27:348-352. [PMID: 27723628 DOI: 10.4103/0970-9290.191880] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Of the occupational hazards experienced by dental professional worldwide, work-related musculoskeletal disorders (WRMSDs) are quite common. Research in the past has recognized that musculoskeletal disorders in dentistry contribute considerably to sick leave, reduced productivity, and dentist attrition. Considering the magnitude of these disorders, an attempt has been made to determine the prevalence and associated factors of various WRMSD. AIM The aim of this study was to investigate the prevalence of self-reported, work-related musculoskeletal problems regarding the perception of pain, over the preceding 12 months and also to identify associated factors which might influence pain among dentists. SUBJECTS AND METHODS A self-administered questionnaire was personally handed over to a select sample of practicing dentists in Visakhapatnam, Andhra Pradesh. The survey was performed using the Nordic Musculoskeletal Questionnaire. RESULTS This study revealed musculoskeletal pain with a frequency of 56% in the neck, 39% in the hand, 32% in the lower back, and 18% in the shoulder regions. Chi-square test showed a significant association between pain in the neck and gender, age, height, and weight (P < 0.05). Pain in lower back was associated with gender, body mass index (BMI), height, and experience (P < 0.05). Pain in the hand was only related to the experience of the dentist (P < 0.05). CONCLUSION Within the limits of the study, the prevalence of WRMSD among dentists in Visakhapatnam, especially involving the neck, hand, lower back, and shoulders, is high. Gender, age, height, and weight, BMI and experience were found to be related with musculoskeletal pain.
Collapse
Affiliation(s)
- Koyyalamudi Prudhvi
- Department of Periodontics, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh, India
| | - K Raja V Murthy
- Department of Periodontics, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh, India
| |
Collapse
|
|
11
|
Elfering A, Igic I, Keller AC, Meier LL, Semmer NK. Work-privacy conflict and musculoskeletal pain: a population-based test of a stress-sleep-mediation model. Health Psychol Behav Med 2016. [DOI: 10.1080/21642850.2016.1168301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
|
|
12
|
Lekadir K, Hoogendoorn C, Hazrati-Marangalou J, Taylor Z, Noble C, van Rietbergen B, Frangi AF. A Predictive Model of Vertebral Trabecular Anisotropy From Ex Vivo Micro-CT. IEEE TRANSACTIONS ON MEDICAL IMAGING 2015; 34:1747-1759. [PMID: 25561590 DOI: 10.1109/tmi.2014.2387114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Spine-related disorders are amongst the most frequently encountered problems in clinical medicine. For several applications such as 1) to improve the assessment of the strength of the spine, as well as 2) to optimize the personalization of spinal interventions, image-based biomechanical modeling of the vertebrae is expected to play an important predictive role. However, this requires the construction of computational models that are subject-specific and comprehensive. In particular, they need to incorporate information about the vertebral anisotropic micro-architecture, which plays a central role in the biomechanical function of the vertebrae. In practice, however, accurate personalization of the vertebral trabeculae has proven to be difficult as its imaging in vivo is currently infeasible. Consequently, this paper presents a statistical approach for accurate prediction of the vertebral fabric tensors based on a training sample of ex vivo micro-CT images. To the best of our knowledge, this is the first predictive model proposed and validated for vertebral datasets. The method combines features selection and partial least squares regression in order to derive optimal latent variables for the prediction of the fabric tensors based on the more easily extracted shape and density information. Detailed validation with 20 ex vivo T12 vertebrae demonstrates the accuracy and consistency of the approach for the personalization of trabecular anisotropy.
Collapse
|
|
13
|
Elfering A, Müller U, Rolli Salathé C, Tamcan Ö, Mannion AF. Pessimistic back beliefs and lack of exercise: a longitudinal risk study in relation to shoulder, neck, and back pain. PSYCHOL HEALTH MED 2015; 20:767-80. [DOI: 10.1080/13548506.2015.1017824] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Achim Elfering
- Department of Psychology, Institute for Psychology, University of Bern, Fabrikstrasse 8, 3012 Bern, Switzerland
- National Centre of Competence in Research, Affective Sciences, University of Geneva, CISA, Geneva, Switzerland
| | - Urs Müller
- Institute for Evaluative Research in Orthopaedic Surgery, University of Bern, Bern, Switzerland
| | - Cornelia Rolli Salathé
- Department of Psychology, Institute for Psychology, University of Bern, Fabrikstrasse 8, 3012 Bern, Switzerland
| | - Özgür Tamcan
- Institute for Evaluative Research in Orthopaedic Surgery, University of Bern, Bern, Switzerland
| | | |
Collapse
|
|
14
|
Melloh M, Elfering A, Salathé CR, Käser A, Barz T, Röder C, Theis JC. Predictors of sickness absence in patients with a new episode of low back pain in primary care. INDUSTRIAL HEALTH 2012; 50:288-298. [PMID: 22673362 DOI: 10.2486/indhealth.ms1335] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
This study examines predictors of sickness absence in patients presenting to a health practitioner with acute/ subacute low back pain (LBP). Aims of this study were to identify baseline-variables that detect patients with a new LBP episode at risk of sickness absence and to identify prognostic models for sickness absence at different time points after initial presentation. Prospective cohort study investigating 310 patients presenting to a health practitioner with a new episode of LBP at baseline, three-, six-, twelve-week and six-month follow-up, addressing work-related, psychological and biomedical factors. Multivariate logistic regression analysis was performed to identify baseline-predictors of sickness absence at different time points. Prognostic models comprised 'job control', 'depression' and 'functional limitation' as predictive baseline-factors of sickness absence at three and six-week follow-up with 'job control' being the best single predictor (OR 0.47; 95%CI 0.26-0.87). The six-week model explained 47% of variance of sickness absence at six-week follow-up (p<0.001). The prediction of sickness absence beyond six-weeks is limited, and health practitioners should re-assess patients at six weeks, especially if they have previously been identified as at risk of sickness absence. This would allow timely intervention with measures designed to reduce the likelihood of prolonged sickness absence.
Collapse
Affiliation(s)
- Markus Melloh
- Western Australian Institute for Medical Research, University of Western Australia, Australia
| | | | | | | | | | | | | |
Collapse
|
|
15
|
Prognostic occupational factors for persistent low back pain in primary care. Int Arch Occup Environ Health 2012; 86:261-9. [PMID: 22434236 DOI: 10.1007/s00420-012-0761-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 03/05/2012] [Indexed: 01/07/2023]
Abstract
PURPOSE To reduce the socio-economic burden of persistent low back pain (LBP), factors influencing the progression of acute/subacute LBP to the persistent state must be identified at an early stage. METHODS Prospective inception cohort study of patients attending a health practitioner for their first episode of acute/subacute or recurrent LBP. Patients were assessed at baseline addressing occupational, psychological, biomedical and demographic/lifestyle factors and followed up over 6 months. Multivariate logistic regression analysis was performed separately for the variables groups of the four different domains, controlling for age, gender and body mass index. The overall predictive value was calculated for the full regression models of the different domains. Finally, all significant variables from the different domains were combined into a final predictor model. RESULTS The final four-predictor model predicted 51 % of variance of persistent LBP and included 'resigned attitude towards the job' (OR 1.73; 95 % CI 1.16-2.59), 'social support at work' (OR 0.54; 95 % CI 0.32-0.90), 'functional limitation' (OR 1.05; 95 % CI 1.01-1.10) and 'duration of LBP' (OR 1.04; 95 % CI 1.02-1.06). The accuracy of the model was 83 %, with 92 % of non-persistent and 67 % of persistent LBP patients correctly identified. CONCLUSIONS In this study of patients with acute/subacute LBP, 'resigned attitude towards the job' increased the likelihood of persistent LBP at 6 month. Addressing this factor with workplace interventions has the potential to modify the outcome. In patients experiencing 'social support at work', the development of persistent LBP was less likely and might therefore be considered as potential resource for prevention of persistent LBP.
Collapse
|
|
16
|
Elfering A, Dubi M, Semmer NK. Participation during major technological change and low back pain. INDUSTRIAL HEALTH 2010; 48:370-375. [PMID: 20562514 DOI: 10.2486/indhealth.48.370] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The development of IT involves major changes in many work settings. Theories of organizational change predict negative consequences of change-related work load on back pain to be less when employees participate in the planning and implementation of change. In a longitudinal field study the effects of participation in the introduction of a new internet service were tested. 29 employees (16 f, 13 m) of a municipal office were studied before, at the end of, and 6 months after implementation of an electronic service. Their participation in the planning and implementation of the project, psychosocial working conditions and back pain were assessed using standardized validated questions. 15 employees said that they had no influence on the project or were only informed of it, while 14 employees said that they could make suggestions, or even take part in decision-making. The two groups did not differ in experience of back pain six months before the project was started, but the group with low participation possibilities had significantly more back pain after the implementation of the project (p=0.021). There was no change in back pain in those employees who had sufficient possibilities of participation. Prevention of work related back pain during phases of technological change should involve employees in planning and implementation.
Collapse
Affiliation(s)
- Achim Elfering
- Department of Psychology, University of Bern, 3000 Bern 9, Switzerland.
| | | | | |
Collapse
|