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排序方式: 共有744条查询结果,搜索用时 15 毫秒
741.
Kathryn L.Van Pelt Jaclyn B.Caccese James T.Eckner Margot Putukian MAlison Brooks Kenneth L.Cameron Megan N.Houston Matthew A.Posner Jonathan C.Jackson Gerald T.McGinty Cameron J.Hillis Thomas W.McAllister Michael A.McCrea Steven P.Broglio Thomas A.Buckley 《运动与健康科学(英文)》2021,10(2):162-171
Objective:Since concussion is the most common injury in ice hockey,the objective of the current study was to elucidate risk factors,specific mechanisms,and clinical presentations of concussion in men’s and women’s ice hockey.Methods:Ice hockey players from 5 institutions participating in the Concussion Assessment,Research,and Education Consortium were eligible for the current study.Participants who sustained a concussion outside of this sport were excluded.There were 332(250 males,82 females)athletes who participated in ice hockey,and 47(36 males,11 females)who sustained a concussion.Results:Previous concussion(odds ratio(OR)=2.00;95%confidence interval(95%CI):1.02‒3.91)was associated with increased incident concussion odds,while wearing a mouthguard was protective against incident concussion(OR=0.43;95%CI:0.22‒0.85).Overall,concussion mechanisms did not significantly differ between sexes.There were specific differences in how concussions presented clinically across male and female ice hockey players,however.Females(9.09%)were less likely than males(41.67%)to have a delayed symptom onset(p=0.045).Additionally,females took significantly longer to reach asymptomatic(p=0.015)and return-to-play clearance(p=0.005).Within the first 2 weeks post-concussion,86.11%of males reached asymptomatic,while only 45.50%of females reached the same phase of recovery.Most males(91.67%)were cleared for return to play within 3 weeks of their concussion,compared to less than half(45.50%)of females.Conclusion:The current study proposes possible risk factors,mechanisms,and clinical profiles to be validated in future concussions studies with larger female sample sizes.Understanding specific risk factors,concussion mechanisms,and clinical profiles of concussion in collegiate ice hockey may generate ideas for future concussion prevention or intervention studies. 相似文献
742.
Lee Kimche McGrath 《Curator: The Museum Journal》1995,38(2):79-86
The Association of Science-Technology Centers (ASTC) represents 283 science-technology centers in the United States and 89 centers around the world. Among its most significant accomplishments is the leadership role that it played in the passage of the legislation that created the Institute of Museum Services (IMS), the federal agency that provides general operating support for the nation's museums. Prior to the funding of the IMS, government support for individual projects in art and history museums had come from the NEA and NEH, but the science museums fell through the cracks. Science museums, were already represented in Washington by ASTC, and ASTC became the natural lobbying group to establish a separate agency for museums. Although ASTC was one of the major driving forces behind the creation of IMS, its members represent only a fraction of the beneficiaries of IMS grants. Since 1984, ASTC institutions have received only 10 to 16 percent of the total dollars awarded by IMS. 相似文献
743.
Kathryn M. Fischer Wilhelmina C. Savenye Howard J. Sullivan 《Performance Improvement Quarterly》2002,15(1):11-24
This article describes a formative evaluation of a one‐day introductory computer‐based training (CBT) course for a new on‐line financial and purchasing system at a large public university. The purposes of the evaluation were to evaluate the effectiveness of the training and to identify appropriate revisions and incorporate them into the training program. Participants were 78 university employees who were likely future users of the financial and purchasing system. The mean score on an on‐line performance posttest that simulated real‐work tasks was 94%, and the mean on a 40‐item knowledge posttest covering the CBT content was 74%. Learner attitudes toward the course were positive, averaging 4.4 on a 5‐point scale. Formative evaluation of the program resulted in revisions that had the potential to improve its effectiveness and provided evidence of the value of ongoing formative evaluation of workplace training. 相似文献
744.