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.). DESIGN AND METHODS:Snowsports participant speeds were measured on "more difficult" trails using a radar gun at two ski areas with: (1) no-sign - the usual condition for the trail, and (2) slow-sign - a large "slow" sign was posted in the middle of the trail. At one ski area, a third condition was also tested: (3) slow+patroller - a ski patroller stood at the slow sign. Participant equipment type and estimated ability were also recorded. RESULTS:At one ski area, there was no significant difference in speed between conditions. At the second ski area, the differences in mean (SD) speeds were small but significant for the no-sign, slow-sign, and slow+patroller conditions: 10.9 (3.0), 10.3 (2.9), and 9.8 (2.6)m/s. Effects were driven by non-beginner skiers; on average, beginner skiers and all snowboarders were slower than non-beginner skiers and did not adjust their speed in response to the signage conditions. CONCLUSIONS:Reductions in speed for the slow-sign and slow+patroller conditions compared to the no-sign condition were small (0.5 and 1.1m/s) compared to the variation in chosen skier speed reported in other studies. The small differences in chosen speeds make it unlikely that slow sign and patroller presence alone would produce meaningful reductions in collision likelihood or severity of impacts.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Harley EM,Stepan L,Scher ISdoi
10.1016/j.jsams.2020.12.008subject
Has Abstractpub_date
2020-12-31 00:00:00eissn
1440-2440issn
1878-1861pii
S1440-2440(20)30863-Xpub_type
杂志文章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:To characterise foot strike and observe change in foot strike patterns with increasing distance during a 15km recreational running road race. To assess the impact of foot strike on running performance. DESIGN:Observational cross-sectional study. METHODS:Foot strike patterns were determined at the 3km and 1...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.12.018
更新日期：2020-06-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to investigate the effect of 16 weeks of Bikram yoga on perceived stress, self-efficacy and health related quality of life (HRQoL) in sedentary, stressed adults. DESIGN:16 week, parallel-arm, randomised controlled trial with flexible dosing. METHODS:Physically inactive, stress...
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.2017.08.006
更新日期：2018-04-01 00:00:00
abstract：OBJECTIVES:Gender-related differences are frequently used in medicine. Electrocardiograms are also subject to such differences. This study evaluated gender differences in ECG parameters of young athletes, discussing the possible implications of these differences for ECG criteria used in the cardiovascular screening of ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2016.06.010
更新日期：2017-02-01 00:00:00
abstract：OBJECTIVES:This study investigated isometric and isokinetic hip strength in individuals with and without symptomatic femoroacetabular impingement (FAI). The specific aims were to: (i) determine whether differences exist in isometric and isokinetic hip strength measures between groups; (ii) compare hip strength agonist/...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2015.10.002
更新日期：2016-09-01 00:00:00
abstract：OBJECTIVES:To determine the utility of the King-Devick (K-D) test in identifying sports-related concussion in semi-professional rugby players. DESIGN:Descriptive cohort study. METHODS:176 male players were recruited from a semi-professional rugby union competition in New Zealand (NZ). Baseline K-D scores were obtaine...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.02.002
更新日期：2017-08-01 00:00:00
abstract：OBJECTIVES:This review informed development of the first national Physical Activity (PA) Guidelines for Older Australians with Mild Cognitive Impairment (MCI) or Subjective Cognitive Decline (SCD) (http://www.dementiaresearch.org.au/images/dcrc/output-files/1567-pa_guidelines_for_mci_or_scd_full_report_final.pdf). Thes...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2020.03.003
更新日期：2020-10-01 00:00:00
abstract：:The objective of this study was to analyze changes in stroke rate (SR), stroke length (SL) and stroke phases (entry and catch, pull, push and recovery) when swimming at (MLSS) and above (102.5% MLSS) the maximal lactate steady state. Twelve endurance swimmers (21±8 year, 1.77±0.10 m and 71.6±7.7 kg) performed in diffe...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2010.08.004
更新日期：2011-03-01 00:00:00
abstract：OBJECTIVES:To investigate the independent and combined associations of objectively measured moderate-to-vigorous physical activity (MVPA) and sedentary time (ST) with reading and arithmetic skills. DESIGN:Cross-sectional/prospective. METHODS:Participants were 89 boys and 69 girls aged 6-8 years. MVPA and ST were meas...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2016.11.003
更新日期：2017-06-01 00:00:00
abstract：:The aims of this study were to assess the durations of the different arm and leg stroke phases (propulsion, glide, and recovery) and the temporal arm-leg gaps between 12 competitive and 12 recreational breaststroke swimmers. The mean ages and best times for a 50-m breaststroke were, respectively, (recreational: 16.9+/...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2008.01.001
更新日期：2009-05-01 00:00:00
abstract：OBJECTIVES:Compare the lower-limb mechanics and anterior cruciate ligament (ACL) injury risk of athletes using a habitual rear-foot (RF) and fore-foot (FF) fall pattern during unplanned sidestepping (UnSS). DESIGN:Experimental cross-sectional. METHODS:Nineteen elite female field hockey players attended one biomechani...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2016.06.002
更新日期：2017-01-01 00:00:00
abstract：OBJECTIVES:This study investigated the association between high-speed running (HSR) and sprint running (SR) and injuries within elite soccer players. The impact of intermittent aerobic fitness as measured by the end speed of the 30-15 intermittent fitness test (30-15VIFT) and high chronic workloads (average 21-day) as ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.05.016
更新日期：2018-03-01 00:00:00
abstract：:This study was designed to compare the acute effect of vibration exercise with a concentric-only activity (arm cranking) on concentric-only muscle action using an upper body isoinertial exercise. Twelve healthy, physically active men, 30.0y+/-6.1 (mean+/-S.D.); height 1.81m+/-0.06; and weight 83.4kg+/-9.7, performed f...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.04.006
更新日期：2008-11-01 00:00:00
abstract：OBJECTIVES:To investigate whether psychosocial variables mediate the effect of a multicomponent intervention on screen time reduction among Brazilian students from schools located in vulnerable areas. DESIGN:A cluster-randomized controlled trial with a 4-month follow-up. METHODS:This study was conducted with 1085 stu...
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.2019.09.004
更新日期：2020-03-01 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:As time with patients and resources are increasingly limited, it is important to determine if clinical tests can provide further insight into real-world behaviors linked to clinical outcomes. The purpose of this study was to determine which aspects of anthropometry and physical fitness testing are associated...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2019.12.005
更新日期：2020-06-01 00:00:00
abstract：:Despite frequent media accounts of drownings in the United Arab Emirates, little was known about the epidemiology and prevention of such incidents. The research objective was to assess newspapers as a national source on incidence, activities, and risk factors for drowning in this high-income media-rich developing coun...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.08.016
更新日期：2009-01-01 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:The tackle event in rugby union ('rugby') contributes to the majority of players' injuries. Referees can reduce this risk by sanctioning dangerous tackles. A study in elite adult rugby suggests that referees only sanction a minority of illegal tackles. The aim of this study was to assess if this finding was ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.10.016
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVES:To help clinicians understand the clinical relevance of subacromial bursa (SAB) thickness on ultrasound investigations in marathon swimmers. DESIGN:A prospective, observational cohort study. METHODS:Twenty two open-water marathon swimmers entered in a 19.7km open-water event received comprehensive, bilater...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.05.004
更新日期：2015-07-01 00:00:00
abstract：:This study examined the effects of active warm up on thermoregulatory responses and intermittent-sprint cycle performance in hot conditions (35.5+/-0.6 degrees C, RH 48.7+/-3.4%). Eight trained males performed a 36-min, intermittent-sprint test (IST) after no (WUP 0), 10-min (WUP 10) or 20-min warm up (WUP 20). The IS...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.05.013
更新日期：2009-01-01 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：:The purpose of this study was to assess the ability of observers to use voice-recognition analysis to accurately classify gait transitions and quantify gait durations typical of team games. Inter-rater and intra-rater reliability was also determined. Four males were filmed performing pre-determined gait protocols. eac...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(02)80025-1
更新日期：2002-12-01 00:00:00
abstract：:Limited data is available on accuracy and validity of video-based, GPS and electronic tracking systems, particularly with reference to curved courses and short high intensity running activities. The main goal of this study was to assess soccer-specific accuracy and validity of the radio-frequency based local position ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2010.04.003
更新日期：2010-11-01 00:00:00
abstract：OBJECTIVES:Resistance training in untrained adolescents can positively effect health-related fitness as well as improve muscular power and sports performance. The impact of resistance training on adolescent athletes is less clear. The purpose of this review is to determine the effectiveness of resistance training progr...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.jsams.2012.02.005
更新日期：2012-11-01 00:00:00
abstract：:Historically, research into possible causes of exercise-induced fatigue has been found to span numerous scientific disciplines, including medicine, psychology, physiology, neurophysiology, biochemistry, biomechanics, and physics. In order to better understand the mechanisms responsible for fatigue, these disciplines h...
journal_title：Journal of science and medicine in sport
pub_type： 社论
doi：10.1016/j.jsams.2006.07.015
更新日期：2007-10-01 00:00:00
abstract：OBJECTIVES:Military-, rescue- and law-enforcement personnel require a high physical capacity including muscular strength. The present study hypothesized that 9 weeks of volume matched concurrent short frequent training sessions increases strength more efficiently than less frequent longer training sessions. DESIGN:A r...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.03.013
更新日期：2020-10-01 00:00:00
abstract：:Sports-related injuries are a significant health problem within Australia, and constitute a national health priority. There is limited Australian research data available on factors that contribute to triathlon injuries, and in particular on how training patterns relate to injury risk. This study examined the associati...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(04)80262-7
更新日期：2004-12-01 00:00:00
abstract：:Low levels of physical activity coupled with high levels of television viewing have been linked with obesity in children. The objective of this study was to assess the efficacy of 'Switch Off-Get Active', a 16-week controlled health education intervention, in increasing physical activity and reducing screen time and B...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2006.06.012
更新日期：2006-10-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to determine whether ActiGraph accelerometer activity counts and estimates of moderate-to-vigorous physical activity collected at a single larger epoch are comparable to those collected at smaller epochs reintegrated into a larger epoch. DESIGN:A cross-sectional study design. ...
journal_title：Journal of science and medicine in sport
pub_type： 临床试验,杂志文章
doi：10.1016/j.jsams.2012.05.015
更新日期：2013-03-01 00:00:00
