Download or read book Experimental and Analytical Study of Transmission of Whole body Vibration to Segments of the Seated Human Body written by Anand Madakashira-Pranesh and published by . This book was released on 2011 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prolonged exposure to whole body vibration (WBV) has been associated with prevalence of spinal disorders among operators of vibrating mobile machinery. The study of biodynamic responses of body segments is thus pertinent for our understanding of potential injury mechanisms and designs of interventions. This study concerns seated body biodynamic responses to vertical vibration through measurements at the driving-point and at body segments, and development of an analytical model for prediction of global and localised responses. Experiments were undertaken to simultaneously measure driving-point apparent mass (APMS) and body segment acceleration transmissibility of 12 adult subjects under random vertical vibration in the 0.5-20 Hz frequency range. Measurements were taken at the C7, T5, T12, L3 and L5 vertebral locations along the fore-aft and vertical axes using skin-mounted micro-accelerometers, and at the scalp using a light-weight head strap with a micro-accelerometer. The study involved four sitting postures realised with different combinations of hands position (on the lap or on the steering wheel) and back support (none or a vertical support), and three excitation magnitudes (0.25, 0.5 and 1 m/s2 RMS). Mathematical correction methods were employed to account for skin effects, sensor misalignments, and seat inertia effects. The corrected body-segment responses of the twelve subjects depicted a clear dependence on the back support condition (p
Download or read book The Effects of Whole Body Vibration written by Heinrich Dupuis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: The observations made by Paracelsus concerning the dose-effect relationship of poison are generally just as applicable to health threatening vibration. With regard to kind, intensity, and duration of the vibration, the "dose" is decisive as to whether the conse quences are detrimental, unmeaningful, or tolerable with respect to health. This law of nature determines the tasks and goals of those whose aim is to safeguard health. Researchers worldwide have been occupying themselves with this many-faceted question for some time: how mechanical vibration affects the human organism and at what point damage occurs. If prevention in occupational medicine is to succeed, it is most important that the gaps in our present knowledge be closed, for if technical preventive measures are to be effective and preventive means in occupational medicine successful, they must be based on reliable and complete findings. Whenever many independent researchers have worked in a given field for a long period, a comprehensive intermediate as sessment is appropriate to evaluate the level achieved and the direction the research is going. In the area of hand-arm vibration, this evaluation has already been carried out, and the response aroused by this particular research report had led to a demand for a comparable evaluation of the research results on whole-body vibration. This report presents clearly and exhaustively the current status of international knowledge, as well as the questions that remain to be answered.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Force motion and Vibration Transmission Properties of Seated Body Under Vertical Vibration and Effects of Sitting Posture written by Wenping Wang and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 2002 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Musculoskeletal Disorders and the Workplace written by Institute of Medicine and published by National Academies Press. This book was released on 2001-05-24 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every year workers' low-back, hand, and arm problems lead to time away from jobs and reduce the nation's economic productivity. The connection of these problems to workplace activities-from carrying boxes to lifting patients to pounding computer keyboards-is the subject of major disagreements among workers, employers, advocacy groups, and researchers. Musculoskeletal Disorders and the Workplace examines the scientific basis for connecting musculoskeletal disorders with the workplace, considering people, job tasks, and work environments. A multidisciplinary panel draws conclusions about the likelihood of causal links and the effectiveness of various intervention strategies. The panel also offers recommendations for what actions can be considered on the basis of current information and for closing information gaps. This book presents the latest information on the prevalence, incidence, and costs of musculoskeletal disorders and identifies factors that influence injury reporting. It reviews the broad scope of evidence: epidemiological studies of physical and psychosocial variables, basic biology, biomechanics, and physical and behavioral responses to stress. Given the magnitude of the problem-approximately 1 million people miss some work each year-and the current trends in workplace practices, this volume will be a must for advocates for workplace health, policy makers, employers, employees, medical professionals, engineers, lawyers, and labor officials.
Download or read book Human Response to Vibration written by Neil J. Mansfield and published by CRC Press. This book was released on 2004-10-28 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through continued collaboration and the sharing of ideas, data, and results, the international community of researchers and practitioners has developed an understanding of many facets of the human response to vibration. At a time when the EU is preparing to adopt a directive on health risks arising from occupational exposure to vibration, Human Response to Vibration offers authoritative guidance on this complex subject. Individual chapters in the book examine issues relating to whole-body vibration, hand-arm vibration, and motion sickness. Vibration measurements and standards are also addressed. This book meets the needs of those requiring knowledge of human response to vibration in order to make practical improvements to the physical working environment. Written with the consultant, practitioner, researcher, and student in mind, the text is designed to be an educational tool, a reference, and a stimulus for new ideas for the next generation of specialists.
Download or read book Human Factors in Transportation written by Katie Plant and Gesa Praetorius and published by AHFE International. This book was released on 2022-07-24 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human Factors in Transportation Proceedings of the 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022), July 24–28, 2022, New York, USA
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Second American Conference on Human Vibration written by Department of Health and Human Services and published by CreateSpace. This book was released on 2013-10 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal and the main thrust of the Second American Conference on Human Vibration were to provide a forum for scientists, engineers, medical doctors, industrial hygienists, and educators to learn and advance research/education in the unique area of human body vibration. In promoting health and safety and in stimulating progress, leaders in the field were invited to share their insight and expertise in addition to the excellent and plausible papers on the presentation schedule. These proceedings of the conference will serve as a means of continuing the dialogue. This unique forum afforded participants opportunities to learn firsthand what their peers and colleagues are working on and to exchange information on a variety of relevant topics including human response, human modeling, experimental design, sensors, new technologies, and epidemiology studies in human responses to hand-transmitted and whole-body vibration. This research is essential for better understanding the risk factors for adverse effects related to vibration and for designing more effective interventions to prevent painful and potentially disabling work-related injuries. This conference addressed contemporary issues regarding occupational health, prevention measures, and scientific data collection used to study the complex, dynamic human response to vibration. The agenda included a rich and diverse scientific program as researchers and medical professionals from around the world gathered to examine human responses to hand-transmitted vibration and whole-body vibration.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Head neck Sensory Motor System written by A. Berthoz and published by . This book was released on 1992 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the most comprehensive and up-to-date account of the control of vertebrate head movements and its biomechanical and neural basis. It covers the entire spectrum of research on head-neck movements, ranging from the global description and analysis of a particular behavior to its underlying mechanisms at the level of neurotransmitter release and membrane biophysics.
Download or read book An Evaluation of the Effects of Mechanical Vibration on Workers written by Yongyut Pruksachat and published by . This book was released on 2002 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research outlined considered the whole-body vibration exposure together with other factors due to the working conditions on the rough terrain environment. Vibrations containing high levels of shock cause excitation forces in the spine. Jerk or rocking movement can also cause changes to the body posture. The body posture has been shown in this study to directly influence the forces acting both in the pelvis and in the spine. The results of the field study showed that the human body exposure to vibration, including high levels of shock can induce changes to the body posture. From the factors investigated with the vibration exposure in the field study, the results of the experimental modelling showed that all factors including the vibration, seating posture and fore-and-aft rocking movement, directly increased the forces acting on the pelvis. The dynamic simulation model clearly revealed that the type, magnitude of vibration and also the seat suspension influenced the seat-buttocks and lumbar spine force. Both compressive and shear force estimates were consistent with material properties and geometry. A dynamic simulation model of a seated human was also developed, to be used as a tool for evaluating the lumbar spine force. The predicted spine force can then be used to assess the health risk from an exposure to whole-body vibration.a concentra.
Download or read book Computational Biomechanics of the Musculoskeletal System written by Ming Zhang and published by CRC Press. This book was released on 2014-09-11 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational biomechanics is an emerging research field that seeks to understand the complex biomechanical behaviors of normal and pathological human joints to come up with new methods of orthopedic treatment and rehabilitation.Computational Biomechanics of the Musculoskeletal System collects the latest research and cutting-edge techniques used in
Download or read book Supine Human Response and Vibration suppression During Whole body Vibration written by John Carl Meusch and published by . This book was released on 2012 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Patients with head and spinal cord injuries may benefit from vibration-suppression designs that minimize (1) the overall transmission of vibration in each axis and (2) the relative accelerations between segments for the most common vibration frequencies that occur during transportation. Furthermore, vibration applied in each axis independently showed transmissibility results comparable to that of simultaneous stimuli in three axes. Although the effects of vibration are quantified in this study, transient shock type vibration should be investigated and future research should be done to fully understand the clinical significance and application of these results.
Download or read book AGARD Conference Proceedings written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1971 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Vibration Description and Determination of Seated Postures with Reference to Whole Body Vibration written by British Standards Institute Staff and published by . This book was released on 1912-08-31 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vibration, Mechanical shock, Mechanical effects (human body), Vibration effects (human body), Coordinates (mathematics), Anatomy, Human body, Musculoskeletal system, Head (anatomy), Neck (anatomy), Hands (anatomy), Force measurement, Physiological effects (human body), Bibliography
