Impaired motor control after sport-related concussion could increase risk for musculoskeletal injury: Implications for clinical management and rehabilitation     

Terese L. Chmielewski  Justin Tatman  Shuhei Suzuki  MaryBeth Horodyski  Darcy S. Reisman  Russell M. Bauer  James R. Clugston  Daniel C. Herman 《运动与健康科学(英文)》2021,10(2):154

This review presents a conceptual framework and supporting evidence that links impaired motor control after sport-related concussion (SRC) to increased risk for musculoskeletal injury. Multiple studies have found that athletes who are post-SRC have higher risk for musculoskeletal injury compared to their counterparts. A small body of research suggests that impairments in motor control are associated with musculoskeletal injury risk. Motor control involves the perception and processing of sensory information and subsequent coordination of motor output within the central nervous system to perform a motor task. Motor control is inclusive of motor planning and motor learning. If sensory information is not accurately perceived or there is interference with sensory information processing and cognition, motor function will be altered, and an athlete may become vulnerable to injury during sport participation. Athletes with SRC show neuroanatomic and neurophysiological changes relevant to motor control even after meeting return to sport criteria, including a normal neurological examination, resolution of symptoms, and return to baseline function on traditional concussion testing. In conjunction, altered motor function is demonstrated after SRC in muscle activation and force production, movement patterns, balance/postural stability, and motor task performance, especially performance of a motor task paired with a cognitive task (i.e., dual-task condition). The clinical implications of this conceptual framework include a need to intentionally address motor control impairments after SRC to mitigate musculoskeletal injury risk and to monitor motor control as the athlete progresses through the return to sport continuum.  相似文献   

Continuous walking and time- and intensity-matched interval walking: Cardiometabolic demand and post-exercise enjoyment in insufficiently active,healthy adults     

Kate Francis  Tom Williamson  Paul Kelly 《Journal of sports sciences》2021,39(1):23-30

ABSTRACT

We compared cardiometabolic demand and post-exercise enjoyment between continuous walking (CW) and time- and intensity-matched interval walking (IW) in insufficiently active adults. Sixteen individuals (13 females and three males, age 25.3 ± 11.1 years) completed one CW and one IW session lasting 30 min in a randomised-counterbalanced design. For CW, participants walked at a mean intensity of 65–70% predicted maximum heart rate (HR_max). For IW, participants alternated between 3 min at 80% HR_max and 2 min at 50% HR_max. Expired gas was measured throughout each protocol. Participants rated post-exercise enjoyment following each protocol. Mean HR and V˙O₂ showed small positive differences in IW vs. CW (2, 95%CL 0, 4 beat.min^?1; d = 0.23, 95%CL 0.06, 0.41 and 1.4, 95%CL 1.2 ml.kg^?1.min^?1, d = 0.36, 95%CL 0.05, 0.65, respectively). There was a medium positive difference in overall kcal expenditure in IW vs. CW (25, 95%CL 7 kcal, d = 0.58, 95%CL 0.33, 0.82). Post-exercise enjoyment was moderately greater following IW vs. CW (9.1, 95%CL 1.4, 16.8 AU, d = 0.62, 95%CL 0.06, 0.90), with 75% of participants reporting IW as more enjoyable. Interval walking elicits meaningfully greater energy expenditure and is more enjoyable than CW in insufficiently active, healthy adults.  相似文献   

Are quiz-games an effective revision tool in Anatomical Sciences for Higher Education and what do students think of them?     

Kate Wilkinson  George Dafoulas  Hemda Garelick  Christian Huyck 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(3):761-777

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Indigenous knowledge and the knowledge commons     

Kate Joranson   《International Information and Library Review》2008,40(1):64-72

This paper studies the frameworks used to understand the commons, the knowledge commons, and indigenous knowledge. Discussion of enclosure, participation, rivalrous and non-rivalrous commons reveals that information and knowledge are resources that increase in value through use. The author examines current IK practices, focusing on documentation strategies and the role of the librarian. Studying IK practices in relation to the commons allows shared language to emerge. Challenging the frameworks, discourse and practices of both IK and the commons exposes and strengthens their connections to one another. This provides a platform for stronger advocacy for IK projects and the commons in general.  相似文献   

Textbook access and affordability through academic library services: A department develops strategies to meet the needs of students     

Melissa Eighmy-Brown  Kate McCready  Emily Riha 《Journal Of Access Services》2017,14(3):93-113

In the spring of 2015, the University of Minnesota Libraries formed the Content Services department, which is comprised of Interlibrary Loan, Publishing Services, and the Copyright Permissions Service. These three service points, as well as additional Library units, work together with campus partners to save students money on their course materials through a variety of programs and pilot projects. By employing multiple avenues to help faculty and students put affordable content into their existing workflows for providing and accessing required readings, the University of Minnesota Libraries are ensuring that there are many options available that support coursework and ultimately student success.  相似文献   

Library Space Redesign and Student Computing     

John C. Teleha  Iyanna Sims  Octavious Spruill  Arneice Bowen  Tiffany Russell  Nina Exner 《Public Services Quarterly》2017,13(3):139-151

Academic libraries are spending considerable time and study on redesigning spaces. The use of technology is often an important part of these redesigned spaces. The space redesign goals at F.D. Bluford Library focus on creating open, activity-promoting, colorful spaces that are designed to be attractive to students. The goals also focus on implementing hybrid spaces that allow students to work alone or in groups, with support for mobile technologies like laptops or tablets. The space redesign goals focus on upgrading the quality of desktops available but reducing the number of desktops. This study examines the question “Does our library renovation significantly change computer use in the redesigned area?” Key findings include that, in defiance of expectations, there is no significant decrease in desktop usage despite the decreased number of computers. However, findings show there is a significant difference in tablet use, despite tablet-friendly spaces and charging options. Surprisingly, our students use fewer tablets. Laptop usage shows no significant difference. In summary, our research shows desktop computing—especially high-quality desktop computing—appears to still have a role in academic libraries even in the mobile technology age.  相似文献   

Editor's note     

Russell H. Yeany 《科学教学研究杂志》1987,24(8):687-687

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乐极生悲     

李游子 《海外英语》2003,(10):24-25

马拉德夫人患有心脏病。对她丈夫的死讯,个个都小心翼翼, 生怕她受到刺激。她妹妹约瑟芬嗫嗫嚅儒、半遮半掩地告诉了她这一噩耗。她丈夫的朋友理查德斯当时也在她身旁。铁路上发生惨案的消息传来时,理查德斯恰好在报社,看到布伦特利·马拉德的名字在“罹难者”中位居首位。他还发去一封电报确认情况属实,便匆忙赶了过来,防止哪个朋友考虑不周,冒冒失失就把噩耗告诉她。  相似文献   

Student Reasoning About the Lever Principle Through Multimodal Representations: a Socio-Semiotic Approach     

Xu  Lihua  Ferguson  Joseph  Tytler  Russell 《International Journal of Science and Mathematics Education》2021,19(6):1167-1186

International Journal of Science and Mathematics Education - There is increasing recognition of the multimodal representational nature of science discovery practices and the roles of multiple and...  相似文献   

Choosing and leaving science in highly selective institutions     

A. Christopher Strenta  Rogers Elliott  Russell Adair  Michael Matier  Jannah Scott 《Research in higher education》1994,35(5):513-547

This study sought to discover some of the causes of initial interset in and atrition from the natural sciences and engineering among the students (N=5320) who entered four highly selective institutions in 1988, with particular attention to possible special causes for the disproportionate attrition of women from science. Though a smaller proportion of women (35 percent) than men (49 percent) were initially interested in science, gender added little to the prediction of such initial choice when preadmission measures of developed abilities were taken into account in regression analysis. Of the group of 2,276 students initially interested in science, 40 percent did not finally concentrate in science, and smaller proportions of women (48 percent) than of men (66 percent) persisted. The most significant cognitive, factor predicting these losses was low grades earned in science courses taken during the first two years of study. With grades held equal, gender was not a significant predictor of persistence in engineering and biology; gender added strongly to grades, however, as a factor associated with unusually large losses of women from a category that included the physical sciences and mathematics. Responses to a questionnaire administered in the fall of 1991 showed that science majors regarded their instruction as too competitive, with too few opportunities to ask questions, taught by professors who were relatively unresponsive, not dedicated, and not motivating. Students who defected from science did so largely because of the attraction of other fields, but many shared the criticism of overcompetitiveness and inferior instruction, along with the view that the work was too difficult. Several items were about elements of classroom instruction and atmosphere thought to be especially difficult for women (i.e., the chilly climate), but except for perceived competitiveness, women did not rate their classroom experiences as being more unpleasant than did men. This research was supported by grants from the Alfred P. Sloan Foundation and the National Science Foundation.  相似文献