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Michael J. Falvo Brian K. Schilling Lawrence W. Weiss 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):293-311
Power is an integral aspect of many sports. Although power output of the lower body is often measured during jumping and cycling movements, much less is known about power as pertains to the upper body musculature. Recently, isoinertial methods ‐ with constant gravitational load ‐ of power testing have become common, but little is known of the reliability and criterion validity of these tests as they pertain to sport performance. In addition, the varied methodology makes a lucid model more evasive. The aims of this review are to examine the various methods of assessing upper body power, to establish its role in predicting athletic performance, and to assess the body of literature that has assessed power output of the upper extremities by isoinertial methods. To our knowledge, only two studies on isoinertial upper‐body power have shown a direct correlation to sporting ability (Baker, 2001; Baker et al., 2001); therefore, many unanswered questions exist as to the efficacy of these tests as predictors of athletic ability or as a method to track athletes’ training over time. From this review we hope to allow the sport coach to assess the overall utility of these tests in terms of availability, safety and external validity. 相似文献
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Neal Strudler Leanna Archambault Lisa Bendixen Don Anderson Risa Weiss 《Educational technology research and development : ETR & D》2003,51(1):41-56
This article describes Project THREAD (Technology Helping Restructure Educational Access and Delivery), an initiative funded
by the U.S. Office of Education through its PT3 grant program. The project’s overarching goal is to prepare teachers to integrate
modern technologies to fundamentally enhance teaching and learning in K-12 schools. Project initiatives include: (a) a series
of in-service workshops for university faculty, administrators, field supervisors, and mentor teachers; (b) one-on-one follow-up
support provided by project staff; (c) a minigrant program to support the development of technology-based learning activities
for university courses; (d) expanded opportunities for students to apply technology in thier courses and field experiences;
and (e) a redesign of selected courses that impact a large number of teacher candidates. The project’s evaluation is described,
along with a discussion of outcomes and lessons learned. in recognition of the project’s scope and accomplishments thus far,
the College of Education at the University of Nevada, Las Vegas (UNLV), was named the 2002 winner of the Best Practice Award
for the Innovative Use of Technology by the American Association of Colleges for Teacher Education (AACTE). 相似文献
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This study examined associations among childhood abuse, emotion dysregulation, and probable posttraumatic stress disorder (PTSD) within a sample of 93 substance use disorder (SUD) patients in residential treatment. SUD patients with probable PTSD (vs. non-PTSD) reported (a) greater severity of childhood sexual, physical, and emotional abuse and (b) significantly higher levels of overall emotion dysregulation and the specific dimensions of difficulties engaging in goal-directed behavior when upset, difficulties controlling impulsive behaviors when distressed, limited access to effective emotion regulation strategies, and lack of emotional clarity. Additionally, significant positive associations were found between both childhood physical and emotional (but not sexual) abuse on the one hand and dimensions of emotion dysregulation on the other. Further analyses indicated that difficulties controlling impulsive behaviors when distressed accounted for the associations of both childhood physical and emotional abuse with probable PTSD status. Findings of the present study highlight a potential mechanism underlying the relationships between both childhood emotional and physical abuse and PTSD in SUD patients. 相似文献
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M. Skolimowski M. Weiss Nielsen F. Abeille P. Skafte-Pedersen D. Sabourin A. Fercher D. Papkovsky S. Molin R. Taboryski C. Sternberg M. Dufva O. Geschke J. Emnéus 《Biomicrofluidics》2012,6(3)
A modular microfluidic airways model system that can simulate the changes in oxygen tension in different compartments of the cystic fibrosis (CF) airways was designed, developed, and tested. The fully reconfigurable system composed of modules with different functionalities: multichannel peristaltic pumps, bubble traps, gas exchange chip, and cell culture chambers. We have successfully applied this system for studying the antibiotic therapy of Pseudomonas aeruginosa, the bacteria mainly responsible for morbidity and mortality in cystic fibrosis, in different oxygen environments. Furthermore, we have mimicked the bacterial reinoculation of the aerobic compartments (lower respiratory tract) from the anaerobic compartments (cystic fibrosis sinuses) following an antibiotic treatment. This effect is hypothesised as the one on the main reasons for recurrent lung infections in cystic fibrosis patients. 相似文献
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Seth D. Weiss 《Communication Research Reports》2013,30(3):215-224
Instructional communication research has not specifically focused on the impact of student classroom communication behaviors on the student-teacher relationship. The current study investigated the relationship between student motives to communicate with instructors and interpersonal attraction toward them. Canonical correlation results indicated student levels of physical, social, and task attraction were positively related to their motivation to establish a relationship, and expressing interest in class and task attraction was inversely related to participatory, excuse-making, and sycophantic motives. Regression analyses determined students' relational motivations as the greatest predictor of social and physical attraction, while excuse-making was the greatest predictor of task attraction. 相似文献