Exploring how anthropometric, vehicle and workplace factors influence whole-body vibration exposures during on-farm use of a quad bike
Milosavljevic, S.; Mani, R.; Ribeiro, D. C.; Vasiljev, R.; Rehn, B. (2012). International Journal of Industrial Ergonomics, 42, 392-396
The primary aim of this study is to determine whether a combination of body height, terrain and vehicle mechanical... more The primary aim of this study is to determine whether a combination of body height, terrain and vehicle mechanical factors confound for the effect of body mass on WBV exposure while using a quad bike under normal rural working conditions. A seat pad mounted triaxial accelerometer and data logger recorded full work day vibration and shock data from 130 New Zealand rural workers. Personal, vehicle and workplace characteristics were gathered using a modified version of the Whole Body Vibration Health Surveillance Questionnaire. Whole-body vibrations were analysed in accordance with the ISO 2631-1 and ISO 2631-5 standards and it is presented as one hour vibration dose value in the Z-direction (1 h VDVZ). Body mass did not demonstrate any significant bivariate association (P > 0.20) with 1 h VDVZ. However BMI, body height, vehicle weight, sheep farm, dairy farm, 2 shock absorber solid axle rear suspension, flat farmland and engine capacity (cc) all demonstrated threshold bivariate associations (P _ 0.20) with 1 h VDVZ. Body mass, body height, 2 shock absorber solid rear axle suspension, and working on a sheep farm created the strongest multiple regression model explaining 16% of variance in VDVZ. Relevance to industry: The influence of driver’s body mass on vibration exposure is strongly influenced by work environment and vehicle mechanical factors and this should be taken in to consideration for research that explores exposures and/or designing seating and suspension systems to attenuate vibration exposures in small on-farm vehicles.
Dose-response relationship between work-related cumulative postural exposure and low back pain: A systematic review.
RIBEIRO, D. C. ; ALDABE, Daniela ; ABBOTT, J.H. ; SOLE, G. ; MILOSAVLJEVIC, S. Annals of Occupational Hygiene (Online), in press, 2012
OBJECTIVES:
To assess the evidence for a dose-response relationship between ROM, duration, and frequency of... more
OBJECTIVES:
To assess the evidence for a dose-response relationship between ROM, duration, and frequency of trunk flexion, and risk of occupational LBP.
METHODS:
An electronic systematic search was conducted using Medline, Cumulative Index to Nursing and Allied Health Literature, EMBASE, and Scopus databases focusing on cohort and case-control studies. Studies were included if they focused on non-specific LBP and postural exposure, considering ROM, duration, or frequency of trunk flexion as independent variables. No language restriction was imposed. Included studies were assessed for risk of bias using the Newcastle-Ottawa Scale for observational studies and a summary of evidence is presented.
RESULTS:
Eight studies were included and all were methodologically rated as high quality. The included studies yielded a total of 7023 subjects who were considered for risk analysis. Different outcome measures for postural exposure were adopted making meta-analysis difficult to perform.
CONCLUSIONS:
We could not find a clear dose-response relationship for work posture exposures and LBP. Limited evidence was found for ROM and duration of sustained flexed posture as risk factor for LBP. We found no evidence for frequency of trunk flexion as a risk factor for LBP.
Pregnancy-related pelvic girdle pain and its relationship with relaxin levels during pregnancy: a systematic review
Daniela Aldabe, Daniel Cury Ribeiro, Stephan Milosavljevic and Melanie Dawn Bussey. (2012) Pregnancy-related pelvic girdle pain and its relationship with relaxin levels during pregnancy: a systematic review. European Spine Journal , in press
Purpose
The present systematic review assessed the level of evidence for the association between relaxin... more
Purpose
The present systematic review assessed the level of evidence for the association between relaxin levels and pregnancy-related pelvic girdle pain (PPGP) during pregnancy.
Methods
PRISMA guidelines were followed to conduct this systematic review. Electronic search was carried out using six different databases. Observational cohorts, cross-sectional or case–control studies focused on the association between relaxin levels and PPGP during pregnancy were included. Studies selection was conducted by two reviewers who screened firstly for titles, then for abstracts and finally for full articles. Risk of bias was assessed using the Newcastle–Ottawa scale and the quality of evidence by the guidelines proposed by the Cochrane back review group.
Results
731 references were identified. Six articles met the inclusion criteria and were considered for this systematic review. The main reason for the studies exclusion was PPGP related to gynaecological reasons. Five studies were case–control and one study was a prospective cohort. Four studies were ranked as high while two were ranked as low quality. Among the high quality studies, three found no association between PPGP and relaxin levels.
Conclusions
Based on these findings, the level of evidence for the association between PPGP and relaxin levels was found to be low. PPGP assessment and controlling for risk factors were found to increase bias leaving uncertainty in interpretation of these findings and a need for further research.
Corticospinal adaptations and strength maintenance in the immobilized arm following 3 weeks unilateral strength training.
by Alan Pearce
Pearce et al.
Scandinavian Journal of Medicine and Science in Sport (In Press)
DOI: 10.1111/j.1600-0838.2012.01453.x
High volume versus low volume balance training on postural sway in adults with previous ankle inversion injury
by Alan Pearce
Castricum, Pearce and Kidgell
International Journal of Motor Learning and Sports Performance 2(2):29-36
Cumulative postural exposure measured by a novel device: a preliminary study
Ribeiro, D.C.; Sole, G.; Abbott, J.H.; Milosavljevic, S. (2011). Cumulative postural exposure measured by a novel device: a preliminary study. Ergonomics, 54:9, 858-865
The aim of the present study was to examine the within-day reliability of the Spineangel® postural monitoring device... more
The aim of the present study was to examine the within-day reliability of the Spineangel® postural monitoring device and to measure cumulative lumbo-pelvic posture exposure of health care workers. Twenty-one workers from an aged-care residential home wore the Spineangel, attached to the belt or waistband of their normal work apparel, during a period of the work shift. To assess the within-day reliability of measurements, 11 workers performed two sets of three lumbo-pelvic forward flexion, sustaining them for five 5 s each, at the beginning and at the end of the work shift. Different thresholds for cumulative postural exposure were measured. The reliability was found to be excellent (ICC = 0.81). On average, a threshold of 30° of lumbo-pelvic forward flexion was exceeded 1069 times/h (SD 2157.1); at 45°, 121 times/h (SD 223.8); and at 60°, 8 times/h (SD 21.8). The use of Spineangel isthus likely to be a useful device for monitoring work posture.
Statement of Relevance: The Spineangel® is capable of providing reliable postural measurements in the workplace. Different cumulative postural exposure thresholds were established considering three domains of cumulative exposure: magnitude (range of motion), frequency and duration. The implementation of such domains for cumulative exposure allowed us to explore interesting forms of monitoring posture exposure.
Exploring Heidegger's Ecstatic Temporality in the Context of Embodied Breakdown
by David Stone
Authors: Stone, David A.; Papadimitriou, Christina
Schutzian Research. 2010; 2(2-1):137-154. (published)
This paper uses Heidegger’s notion of human temporality to illuminate the meaning of the temporal disruption that can... more This paper uses Heidegger’s notion of human temporality to illuminate the meaning of the temporal disruption that can occur after traumatic spinal cord injury (TSCI). Though time is seen as important in rehabilitation practice, especially in occupational theory, it is often conceptualized in linear terms thus missing its existential structure. Our goal in this paper is to enhance researchers’ and rehabilitation clinicians’ ways of doing and thinking about rehabilitation by revealing and articulating the role of human temporality in recovery and re-habilitation in the case of TSCI. Data come from ethnographic observations and field notes from one rehabilitation facility, interviews with former and current patients of spinal units, and interviews with allied health staff who work with adults with TSCI. We discuss research and practice implications of this work for allied health staff in identifying ways of bringing this new approach to temporality into practice.
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Seen by:Electromyographical analysis of the quadriceps during knee extension at different speeds
Ribeiro, D. C. ; Loss, Jefferson Fagundes ; Caneiro, João Paulo Torres; Lima, Cláudia Silveira ; Martinez, Flávia Gomes
Acta Ortopédica Brasileira, v. 13, n. 4, p. 189-193, 2005.
The patellofemoral pain syndrome (PFPS) is a common disorder of the knee; it’s often caused by an excessive lateral... more The patellofemoral pain syndrome (PFPS) is a common disorder of the knee; it’s often caused by an excessive lateral traction of the patella. Subjects with this syndrome usually present a disruption in the activation of Vastus Mediallis Obliquus (VMO), which provides the patellar medial pull. Non-operative treatment includes quadriceps strengthening in order to promote better patellar stability and traction. Many researchers have been trying to selectively recruit the VMO, in order to improve treatments. The main purpose of this study is to investigate, using electromyography, the interference of angular speed and different ways of fixing the elastic tube on the quadriceps activity. Ten male subjects without any kind of muscle or joint injury participated in this study. Subjects with a Q angle value out of 10-15° were excluded from this study. The elastic tube was fixed parallel and oblique to the subjects’ body. Knee extensions were performed at 60°/sec and 120°/sec. No selective activity of the VMO was found. By comparing the levels of muscular activity, there was an increase of the electromyographic activity level in all portions of the quadriceps at the two angular speeds, only for parallel-fixed elastic tubes. These results suggest a synergic activity between VMO and the other portions of the quadriceps.
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Seen by: and 9 moreBiochemical Markers as Tools to Increase Efficiency in Drug Development
by Tracy Rodman
Authors: Karsdal Morten A, Kasper Dagmar
Published in Touch European Musculoskeletal Review, 2008;3(1):17-21
Beyond the Bone and Joint Decade—The Key is Medical Education Now
by Tracy Rodman
Author: Gardner Gregory C
Published in Touch US Musculoskeletal Review, 2006;2:10-1
BAGUERA®C – A New Cervical Disc Replacement Device
by Tracy Rodman
Author; Maestretti G
Published in Touch European Musculoskeletal Review, 2008;3(2):61-4
Avoidance of Arthroscopic Shoulder Instability Surgery in Cases Involving Bony Defects
by Tracy Rodman
Authors; Amorosa Louis F, Levine William N
Published in Touch US Musculoskeletal Review, 2009;4:65-9
Arthroplasty as the Next Evolution for Surgical Reconstruction of the Spine
by Tracy Rodman
Author: Zigler Jack E
Published in Touch US Orthopedics Review, 2005;30-35
Lesão do Músculo Obturador Externo em Atletas de Futebol Profissional
VALENTE, H. ; MARQUES, Felipe Osório ; SOUZA, L.S. ; ABIB, R.T. ; RIBEIRO, D. C.
Revista Brasileira de Medicina do Esporte (Impresso), v. 17, p. 36-39, 2011
Several studies have investigated different injuries that occur among soccer players. However, it has been noticed... more
Several studies have investigated different injuries that occur among soccer players. However, it has been noticed that none has mentioned injury to the external obturator muscle. As a small and monoarticulated muscle, its incidence is probably low and barely documented in the literature. Therefore, the aim of this study is to present four external obturator muscle strain cases in a professional soccer team in 2008. The data was collected from a database using the software Sistema de Preparação Desportiva which provides data such as name, diagnosis, trauma mechanism, clinical history, time away from training and progress. All athletes who undertook Magnetic Resonance Imaging (MRI) of the external obturator muscle and presented rupture of the external obturator muscle were included in the study. Four external obturator muscle strain injuries were
identified from a total of twenty-eight muscle strains during the year of 2006. All athletes presented diffuse pain on the hip for medial and lateral rotation of the joint. The predominant injury mechanism was lateral rotation of the trunk over the femur on closed kinetic chain. It was concluded that external obturator muscle strain injuries can be mistaken for those related to the hip adductor muscles due to the reported pain area. Clinical
examination should be based on the athletes’ report and functional tests, mainly for the hip rotator muscles. The MRI scan was essential to the location, classification and evaluation of the injury size.
Advances in the Treatment of Osteoarthritis and the Role of Chondroitin Sulphate – A Review
by Tracy Rodman
Author Henrotin Yves
Published in Touch European Musculoskeletal Review, 2010;5(2):11–7
Advances in the Understanding and Treatment of Rotator Cuff Disease
by Tracy Rodman
Authors Dai Zhigang, Desai Pingal, Garzon-Muvdi Juan, McFarland Edward G
Published in Touch European Musculoskeletal Review, 2009; 4(2):78-81
A Selection of Recent Papers as Recommended by the Advisory Panel
by Tracy Rodman
Author: Kurtz S
Published in Touch European Musculoskeletal Review, 2007;2:9
A Unique Dual-function Device – A Dural Sealant with Adhesion-prevention Properties
by Tracy Rodman
Author: Preul Mark C
Published in Touch European Musculoskeletal Review, 2006;41-4
Acetabular Cup Revision in Pelvic Osteolysis – An Approach with Ceramic-on-ceramic Bearing and Navigational Assistance
by Tracy Rodman
Author: Chang Jun-Dong
Published in Touch European Musculoskeletal Review, 2008;3(1):63-7

