Abstract:
OBJECTIVES:Whole body vibration devices are used as a means to augment training, and their potential to treat a range of musculoskeletal diseases and injuries is now being considered. The goal of this work is to determine the degree to which acceleration delivered by whole body vibration devices at the plantar surfaces of a standing human is transmitted through the axial and appendicular skeleton, and how this mechanical challenge corresponds to the safety threshold limit values established by the International Standards Organization ISO-2631. DESIGN:Non-blinded laboratory assessment of a range of whole body vibration devices as it pertains to acceleration transmission to healthy volunteers. METHODS:Using skin and bite-bar mounted accelerometers, transmissibility to the tibia and cranium was determined in six healthy adults standing on a programmable whole body vibration device as a function of frequency and intensity. Measures of transmissibility were then made from three distinct types of whole body vibration platforms, which delivered a 50-fold range of peak-to-peak acceleration intensities (0.3-15.1 gp-p; where 1g is Earth's gravitational field). RESULTS:For a given frequency, transmissibility was independent of intensity when below 1g. Transmissibility declined non-linearly with increasing frequency. Depending on the whole body vibration device, vibration ranged from levels considered safe by ISO-2631 for up to 8h each day (0.3 gp-p @ 30 Hz), to levels that were seven times higher than what is considered a safe threshold for even 1 min of exposure each day (15.1 gp-p @ 30 Hz). Transmissibility to the cranium was markedly attenuated by the degree of flexion in the knees. CONCLUSIONS:Vibration can have adverse effects on a number of physiologic systems. This work indicates that readily accessible whole body vibration devices markedly exceed ISO guidelines for safety, and extreme caution must be practiced when considering their use.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Muir J,Kiel DP,Rubin CTdoi
10.1016/j.jsams.2013.01.004subject
Has Abstractpub_date
2013-11-01 00:00:00pages
526-31issue
6eissn
1440-2440issn
1878-1861pii
S1440-2440(13)00024-8journal_volume
16pub_type
杂志文章abstract:OBJECTIVES:Research is equivocal regarding endurance performance benefits of external nasal dilators, and currently research focusing on internal nasal dilators is non-existent. Both devices are used within competitive cycling. This study examined the influence of external and internal nasal dilation on cycling economy...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jsams.2016.08.018
更新日期:2017-04-01 00:00:00
abstract::To delineate and compare the isokinetic neck strength profile of senior elite rugby players. One hundred and eighty-nine rugby players (mean; 95% confidence intervals: 24.31; 23.87-24.75 years) were sampled from South African provincial teams and assessed anthropometrically and isokinetically according to a set protoc...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2007.01.009
更新日期:2008-04-01 00:00:00
abstract::Bone adapts to altered physical stimuli, dietary changes, or injury. Dietary calcium and vitamins play important roles in maintaining skeletal health, but high-fat diets are pervasive in western cultures and may contribute to the increasing prevalence of osteoporosis and incidence of related hip fractures. Exercise he...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,评审
doi:10.1016/s1440-2440(00)80040-7
更新日期:2000-09-01 00:00:00
abstract::The purpose of this study was to determine if three training loads equated by volume differed in terms of the temporal, kinematic and kinetic characteristics of each set. Twelve experienced weightlifters (30.2+/-10.6 years old and 75.8+/-13.0 kg) performed three sets (6 x 30% 1RM, 3 x 60% 1RM and 2 x 90% 1RM) of balli...
journal_title:Journal of science and medicine in sport
pub_type: 临床试验,杂志文章
doi:10.1016/s1440-2440(04)80004-5
更新日期:2004-06-01 00:00:00
abstract::Changes in magnitude and timing of rearfoot eversion and tibial internal rotation by foot orthoses and their contributions to vertical ground reaction force and knee joint moments are not well understood. The objectives of this study were to test if orthoses modify the magnitude and time to peak rearfoot eversion, tib...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2008.05.001
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVES:The health benefits from participation in half-marathon is challenged by a yearly running-related injury (RRI) incidence proportion exceeding 30%. Research in injury etiology is needed to successfully prevent injuries. The body's load capacity is believed to play an essential role for injury development. The...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2018.08.014
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVES:To develop a valid and reliable video-based decision-making test to examine and monitor the decision-making performance of Australian football umpires. DESIGN:Validation assessments with test re-test reliability. METHODS:A video-based decision-making test was developed from a pool of 156 video-based decisi...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2013.08.001
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVES:To examine urban/rural differences in children's independent mobility; associations between mobility licences and children's independent mobility; and potential correlates of mobility licences. DESIGN:Cross-sectional study of 430 primary (48% boys; 72% urban) and 258 secondary schoolchildren (52% boys; 51.6...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2012.03.005
更新日期:2012-11-01 00:00:00
abstract:OBJECTIVES:To determine the effects of "strides" with a weighted-vest during a warm-up on endurance performance and its potential neuromuscular and metabolic mediators. A bout of resistance exercise can enhance subsequent high-intensity performance, but little is known about such priming exercise for endurance performa...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2013.12.005
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVES:To examine the efficacy of "slow" signs and patroller presence at "slow" signs to reduce speeds of snowsports participants, compared to a condition where no sign or patroller are present, independent of other factors that may contribute to skier slowing (such as prior knowledge, trail convergence, etc.). DE...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2020.12.008
更新日期:2020-12-31 00:00:00
abstract::The purpose of the present study was to accurately and reliably analyse the nature of movement undertaken by National Rugby League (NRL) referees during matches played in the 2000 season. The movements of NRL referees (n=5) were analysed from videotape footage of ten games. The researchers assigned each movement to on...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/s1440-2440(03)80027-0
更新日期:2003-09-01 00:00:00
abstract:OBJECTIVES:To determine whether pain perceptions and coping strategies are predictive of the following outcomes after knee surgery in athletes: (1) return to similar level of sport, (2) improvement in symptoms, and (3) improvement in kinesiophobia. DESIGN:Prospective cohort study. METHODS:101 athletes (52 men, 49 wom...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2019.09.011
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVES:Many adolescents are not physically active enough to receive associated health benefits. Furthermore, participation in physical activity generally declines during adolescence, and to a greater degree for females. Longitudinal research is required to better understand the determinants of change in physical ac...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2014.09.012
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVES:We evaluated the benefits and relationship of the number of steps per day to the cardiometabolic risk factors: adiposity indicators; insulin resistance; and metabolic syndrome (MetS) in apparently healthy Brazilian middle-aged men. DESIGN:Cross-sectional. METHODS:Apparently healthy men (age: 50 ± 5 years; ...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2013.04.017
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVES:To investigate the effect of Kinesio Taping (KT) applied over the biceps brachii on maximal isokinetic elbow torque. DESIGN:This study followed a single-blinded, placebo controlled, repeated measures design. METHODS:Isokinetic eccentric and concentric elbow peak torques were evaluated without taping (NT), ...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jsams.2012.06.003
更新日期:2013-05-01 00:00:00
abstract:OBJECTIVES:It has been hypothesised that fatigue may be a major factor in tackle-related injury risk in rugby union and hence more injuries occur in the later stages of a game. The aim of this study is to identify changes in ball carrier or tackler proficiency characteristics, using elite level match video data, as pla...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2017.06.023
更新日期:2018-02-01 00:00:00
abstract:OBJECTIVES:Athletes who train indoors during the winter months exhibit low serum 25-hydroxyvitamin D [25(OH)D] concentrations due to a lack of sunlight exposure. This has been linked to impaired exercise performance. The purpose of this study was to assess the effects of oral vitamin D₃ supplementation on selected phys...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2013.03.007
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:The aims of the present study were: (1) to characterize vBMD, bone structure and strength with peripheral quantitative computerized tomography (pQCT) in adolescent swimmers and compare it to normo-active controls (CG); and (2) to evaluate the possible interaction that weight-bearing sports might have on swim...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2015.11.007
更新日期:2016-09-01 00:00:00
abstract::We investigated the key beliefs to target in interventions aimed at increasing physical activity (PA) among mothers and fathers of young children. Parents (288 mothers and 292 fathers) completed a Theory of Planned Behaviour belief-based questionnaire and a 1-week follow-up of PA behaviour. We found that a range of be...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2010.07.004
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVES:Tendinopathy, the most prevalent tendon disorder which is considered as the clinical diagnosis of pain and dysfunction, is common in sports and its prevalence is ever-increasing. Despite the lack of clarity about risk factors, various preventive interventions for tendinopathy have been investigated. The main...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,评审
doi:10.1016/j.jsams.2015.03.008
更新日期:2016-03-01 00:00:00
abstract:OBJECTIVES:Methodological concerns relating to acute-to-chronic workload ratios (ACWR) have been raised. This study aimed to assess the relationship between an alternative predictor variable named 'differential load', representing the smoothed week-to-week rate change in load, and injury risk in first class county cric...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2020.01.004
更新日期:2020-06-01 00:00:00
abstract::The ability of fourteen competitive helmsmen of different skill levels to sail a standard course towards the wind (upwind) was assessed using a virtual reality sailing simulator. The simulator consisted of a Laser dinghy deck which pivoted between two supports and was dynamically controlled by a computer driven pneuma...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/s1440-2440(98)80014-5
更新日期:1998-06-01 00:00:00
abstract:OBJECTIVES:Australian Football (AF) is a collision sport containing high injury rates in junior competition. Successful performance at the elite junior level not only requires superior specific football knowledge and skills, but also well developed fitness qualities. However, no studies have examined the link between p...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2012.09.005
更新日期:2013-07-01 00:00:00
abstract::The terminology used for monitoring and promoting physical activity and exercise among health and fitness professionals varies considerably. There is a large array of descriptor terms reported in the literature and used in day-to-day practice and this inconsistency can be confusing for clients and practitioners alike....
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,评审
doi:10.1016/j.jsams.2009.09.008
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVES:To investigate the effects of custom-made foot orthoses on the torque- and power-cadence relationships and perceived comfort during maximal cycling exercises in a population of competitive road cyclists. DESIGN:Randomised, repeated measures, participant-blinded controlled study. METHODS:Twenty-four competi...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jsams.2015.04.015
更新日期:2016-05-01 00:00:00
abstract::This study examined the effect of heat stress on physiological responses and exercise performance in elite road cyclists. Eleven members of the Australian National Road Cycling Squad completed two 30 min cycling time-trials in an environmental chamber set at either 32 degrees C, (HT) or 23 degrees C (NT) with a relati...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/s1440-2440(00)80080-8
更新日期:2000-06-01 00:00:00
abstract::The epidemiological rationale for a focus on physical activity (PA) among Aboriginal and Torres Strait Islander (ATSI) people is compelling. PA programs have significant potential to benefit ATSI people and their communities through their contribution to reducing chronic disease, improving physical and mental health a...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,评审
doi:10.1016/s1440-2440(04)80276-7
更新日期:2004-04-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to investigate relationships between trait emotional intelligence and emotional state changes over the course of an ultra-endurance foot race covering a route of approximately 175 miles (282 km) and held in set stages over six days. DESIGN:A repeated measures field design that soug...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2011.03.001
更新日期:2011-07-01 00:00:00
abstract::Our purpose was to assess the effect of wearing close-fitting neoprene shorts on swinging leg movement discrimination (MD) scores in elite level Australian Football players. Twenty players had their swinging leg MD assessed using the active movement extent discrimination apparatus (AMEDA), once wearing close-fitting n...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2007.03.007
更新日期:2008-06-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to examine whether the use of machine learning improved the ability of a neuromuscular screen to identify injury risk factors in elite male youth football players. DESIGN:Prospective cohort study. METHODS:355 elite youth football players aged 10-18 years old completed a prospe...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2020.04.021
更新日期:2020-11-01 00:00:00