Abstract：
:A technique for registering vibration and deformation patterns has been adapted for the measurement of whole-body vibration in humans. Double-exposure holographic interferometry produces three dimensional pictures of the body, allowing exact measurement of the subject's movement between the two pulses. In this study an interval of 600 microseconds between the two pulses was used, producing measurements with a resolution of less than 0.3 X 10(-6)m. The subject standing in a fixed posture, was exposed to the laser beams first without vibration and then with vibration. The picture without vibration is needed as certain movements due to life functions of the body such as heartbeat, blood circulation etc are involved therein. This basic pattern should be considered when analysing the pictures with vibration. Different types of vibration in various postures were studied. Tests were also conducted when a reflective coating was applied to the skin. The results show that the method is applicable for measuring whole-body vibration and suggests further tests with more modern laser equipment which is now available. Such equipment can produce pulses with a high repetition rate and of much better quality than those obtained in this study. Once coordinated to the heartbeat and to the working frequency of the vibrating object, a reliable analysis of whole-body vibration can be maintained.
journal_name
J Biomechjournal_title
Journal of biomechanicsauthors
Wangenheim M,Holzmann P,Svensson LBdoi
10.1016/0021-9290(84)90036-8subject
Has Abstractpub_date
1984-01-01 00:00:00pages
449-56issue
6eissn
0021-9290issn
1873-2380pii
0021-9290(84)90036-8journal_volume
17pub_type
杂志文章abstract：:The natural stress distribution in the femur is significantly altered after total hip arthroplasty (THA). When an implant is introduced, it will carry a portion of the load, causing a reduction of stress in some regions of the remaining bone. This phenomenon is commonly known as stress shielding. In response to the ch...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(00)00110-x
更新日期：2000-12-01 00:00:00
abstract：:The objective of this study is to develop analytical models for simulating driving-point biodynamic responses distributed at the fingers and palm of the hand under vibration along the forearm direction (z(h)-axis). Two different clamp-like model structures are formulated to analyze the distributed responses at the fin...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2006.10.031
更新日期：2007-01-01 00:00:00
abstract：:Joint kinematics and contact mechanics dictate the success of current total knee replacement (TKR) devices. Efficient computer models present an effective way of evaluating these characteristics. Predicted contact stress and area due to articulations at the tibio-femoral and patello-femoral interfaces indicate potenti...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2004.02.046
更新日期：2005-02-01 00:00:00
abstract：:Measurement of vertebral rotation from frontal X-ray projections of the pedicles was introduced by Nash and Moe. By the introduction of a vertebral model, their method and different modifications can be described and characterized easily. A geometrical analysis shows, that two parameters are sufficient for this model....
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/0021-9290(84)90005-8
更新日期：1984-01-01 00:00:00
abstract：:Falls due to slipping are a serious concern, with slipping estimated to cause 40-50% of all fall-related injuries. Epidemiological data indicates that older and obese adults experience more falls than young, non-obese individuals. An increasingly heavier and older U.S. population and workforce may be exacerbating the ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2016.01.018
更新日期：2016-03-21 00:00:00
abstract：:Fall risk in elderly people is usually assessed using clinical tests. These tests consist in a subjective evaluation of gait performed by healthcare professionals, most of the time shortly after the first fall occurrence. We propose to complement this one-time, subjective evaluation, by a more quantitative analysis of...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2018.01.024
更新日期：2018-03-01 00:00:00
abstract：:Understanding cell geometric and mechanical properties is crucial to understanding how cells sense and respond to their local environment. Moreover, changes to cell mechanical properties under varied micro-environmental conditions can both influence and indicate fundamental changes to cell behavior. Atomic Force Micro...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2019.06.028
更新日期：2019-08-27 00:00:00
abstract：:Traumatic damage to the brainstem occurs frequently when the brain skull complex experiences injurious loading especially during those traumatic situations that produce diffuse axonal injury (DAI). DAI has been shown to be dependent on load direction and correlated with regional tissue deformation in response to rotat...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(98)00068-2
更新日期：1998-09-01 00:00:00
abstract：:Differences in motion patterns subserving the same movement goal can be identified qualitatively. These alternatives, which may characterize 'movement techniques' (e.g., the stoop and the squat lifting technique), may be associated with significantly different biomechanical constraints and physiological responses. Des...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2004.04.014
更新日期：2005-03-01 00:00:00
abstract：:This study investigated spatio-temporal variables, ground reaction forces and sagittal and frontal plane kinematics during the stance phase of nine trained subjects running barefoot and shod at three different velocities (3.5, 4.5, 5.5 m s(-1)). Differences between conditions were detected with the general linear meth...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(99)00192-x
更新日期：2000-03-01 00:00:00
abstract：:Nowadays in various daily, occupational and training activities, there are many occasions with forces supported in hands acting at various magnitudes, elevations, and orientations with substantial horizontal components. In this work, we aim to compute trunk muscle forces, stability, and spinal loads under pulling exte...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2015.09.036
更新日期：2016-04-11 00:00:00
abstract：:Deformation and loading of the knee posterior joint capsule were studied in the cat, in extension rotations and in axial external (ER) and internal (IR) rotations at full extension. Loads were measured in the ligament along the upper edge of the capsule, using mechanically sensitive neurons that were calibrated as loa...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/0021-9290(93)90352-f
更新日期：1993-11-01 00:00:00
abstract：:Implant fixation implies a strong and durable mechanical bond between the prosthetic component and host skeleton. Assuming the short-term impediments to implant fixation are successfully addressed and that longer-term issues such as late infection and mechanical failure of the components are avoided, the biological re...
journal_title：Journal of biomechanics
pub_type： 杂志文章,评审
doi：10.1016/j.jbiomech.2014.12.021
更新日期：2015-03-18 00:00:00
abstract：:Numerical models commonly account for elastic inhomogeneity in cortical bone using power-law scaling relationships with various measures of tissue density, but limited experimental data exists for anatomic variation in elastic anisotropy. A recent study revealed anatomic variation in the magnitude and anisotropy of el...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2011.04.009
更新日期：2011-06-03 00:00:00
abstract：:Tendons are elastic structures that connect muscle to the skeletal system and transmit force relative to the amount of stretch they experience. The mechanical properties of human tendons are difficult to measure non-invasively, so generic values are often assumed in musculoskeletal models to represent all subjects. We...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2015.06.009
更新日期：2015-09-18 00:00:00
abstract：:High-resolution voxel-based finite element software, such as FEEBE developed at the NCBES, is widely used for studying trabecular bone at the micro-scale. A new approach to determine heterogeneous bone tissue material properties for computational models was proposed in this study. The specimen-specific range of tissue...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2008.05.014
更新日期：2008-08-07 00:00:00
abstract：:Chondrocytes in articular cartilage are regularly subjected to compression and recovery due to dynamic loading of the joint. Previous studies have investigated the elastic and viscoelastic properties of chondrocytes using micropipette aspiration techniques, but in order to calculate cell properties, these studies have...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2004.11.006
更新日期：2006-01-01 00:00:00
abstract：:This communication extends the recently reported cell-specific finite element (FE) method in Slomka and Gefen (2010) in which geometrically realistic FE cell models are created from confocal microscopy scans for large deformation analyses. The cell-specific FE method is extended here in the following aspects: (i) we d...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2010.09.012
更新日期：2011-02-03 00:00:00
abstract：:Head injuries frequently occur in American football and other contact sports. Uncertainty on the effects of cervical muscle properties on head injury risk may be due to the limitations of previous observational studies. This simulation study employs a musculoskeletal model of the head and neck to investigate the effec...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2019.109411
更新日期：2020-02-13 00:00:00
abstract：:The distal foot power equation is a simple yet powerful tool for estimating the power dissipation or generation within the foot even while modeling it as a rigid body. It was introduced over two decades ago, but has seen a resurgence of use in recent years. Nevertheless, the theoretical justification for this formula ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2020.109964
更新日期：2020-08-26 00:00:00
abstract：:We have developed a musculoskeletal model of the human lower extremity for computer simulation studies of musculotendon function and muscle coordination during movement. This model incorporates the salient features of muscle and tendon, specifies the musculoskeletal geometry and musculotendon parameters of 18 musculot...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/0021-9290(90)90349-8
更新日期：1990-01-01 00:00:00
abstract：:Falls pose a tremendous risk to those over 65 and most falls occur during locomotion. Older adults commonly walk slower, which many believe helps improve walking stability. While increased gait variability predicts future fall risk, increased variability is also caused by walking slower. Thus, we need to better unders...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2008.08.002
更新日期：2008-10-20 00:00:00
abstract：:This study is aimed at the analysis of articular contact in a three-dimensional mathematical model of the human knee-joint. In particular the effect of articular contact on the passive motion characteristics is assessed in relation to experimentally obtained joint kinematics. Two basically different mathematical conta...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/0021-9290(91)90019-j
更新日期：1991-01-01 00:00:00
abstract：:Computer simulation of human masticatory dynamics requires specification of the jaw's mass properties. These are difficult to estimate, especially in living subjects. Here, we used calibrated computed tomography (CT) to determine the properties of eight osseous jaw specimens with adult dentitions. When the CT numbers ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(02)00057-x
更新日期：2002-07-01 00:00:00
abstract：:Nanoindentation has been widely used as a means to measure the micro-mechanical properties of bone and to predict the macroscopic properties. The role of indent depth and indenter tip geometry in measuring the hierarchical properties of bone tissue was explored experimentally using a range of spherical indenter tips o...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2010.10.008
更新日期：2011-01-11 00:00:00
abstract：:Hammocks and cradles have long been appreciated, but in a very limited way. Aside from being emotionally soothing the devices affect the skin and all deep body components. While structurally simple they are functionally quite sophisticated and could very well affect the pattern of health care across the board--acute, ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/0021-9290(84)90089-7
更新日期：1984-01-01 00:00:00
abstract：OBJECTIVE:To test the force plate as a gait analysis system for broilers and to determine how the ground reaction force (GRF) patterns change in these birds with growth and administration of analgesia. MATERIALS AND METHODS:Thirty-three male Ross 308 chicks were raised on either an ad libitum or restricted-feeding reg...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2006.09.014
更新日期：2007-01-01 00:00:00
abstract：:The purpose of this study was to clarify how foot deformation affects the relationship between triceps surae muscle-tendon unit (MTU) length and ankle joint angle. For six women and six men a series of sagittal magnetic resonance (MR) images of the right foot were taken, and changes in MTU length (the displacement of ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2011.07.003
更新日期：2011-09-23 00:00:00
abstract：:Throughout life, bone is continuously turning over by the well-regulated processes of bone formation and resorption. Everyday activities damage bone, and this damage is normally repaired in a continuous remodelling process. When an imbalance in this remodelling process occurs, bones may become more susceptible to frac...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(00)00215-3
更新日期：2001-04-01 00:00:00
abstract：:In the present study, the electro-mechanical properties of human knee articular cartilage were measured in vitro. An arthroscopic measurement tool was used to measure streaming potential integral (SPI), after which creep indentation tests were performed. Additionally, degradation level of the tissue was determined in ...
journal_title：Journal of biomechanics
pub_type： 临床试验,杂志文章
doi：10.1016/j.jbiomech.2013.02.004
更新日期：2013-04-26 00:00:00
