Open Forum     

Gretchen Crowley 《The Educational forum》2013,77(2):102-103

  相似文献   

Ground reaction forces, kinematics, and muscle activations during the windmill softball pitch     

Oliver GD  Plummer H 《Journal of sports sciences》2011,29(10):1071-1077

The aims of the present study were to examine quantitatively ground reaction forces, kinematics, and muscle activations during the windmill softball pitch, and to determine relationships between knee valgus and muscle activations, ball velocity and muscle activation as well as ball velocity and ground reaction forces. It was hypothesized that there would be an inverse relationship between degree of knee valgus and muscle activation, a direct relationship between ground reaction forces and ball velocity, and non-stride leg muscle activations and ball velocity. Ten female windmill softball pitchers (age 17.6 ± 3.47 years, stature 1.67 ± 0.07 m, weight 67.4 ± 12.2 kg) participated. Dependent variables were ball velocity, surface electromyographic (sEMG), kinematic, and kinetic data while the participant was the independent variable. Stride foot contact reported peak vertical forces of 179% body weight. There were positive relationships between ball velocity and ground reaction force (r = 0.758, n = 10, P = 0.029) as well as ball velocity and non-stride leg gluteus maximus (r = 0.851, n = 10, P = 0.007) and medius (r = 0.760, n = 10, P = 0.029) muscle activity, while there was no notable relationship between knee valgus and muscle activation. As the windmill softball pitcher increased ball velocity, her vertical ground reaction forces also increased. Proper conditioning of the lumbopelvic-hip complex, including the gluteals, is essential for injury prevention. From the data presented, it is evident that bilateral strength and conditioning of the gluteal muscle group is salient in the windmill softball pitch as an attempt to decrease incidence of injury.  相似文献   

Book reviews     

Philip Harling  Claire Hoertz Badaracco  J. Kendrick Noble  David A. Kronick Ph.D.  Gustavo Verdesio  Pamela K. Gilbert  J. James Mancuso  Leonard Shatzkin  Thomas L. Bonn  Robert A. Colby  Nat Bodian  Robert F. Kidd  Leonard Shatzkin  Sally P. Bennett  Thomas L. Bonn  John Tebbel  Richard W. Clement  Beth Luey  Pamela K. Gilbert  Herbert S. White  Gretchen V. Douglas 《Publishing Research Quarterly》1996,12(3):50-98

  相似文献   

Covering urban vice: the New York Times, "white slavery," and the construction of journalistic knowledge     

Gretchen Soderlund 《Critical Studies in Media Communication》2013,30(4):438-460

Communication scholars have analyzed how such pivotal historical and political events as war, assassination, and the rise and fall of nations and political regimes have functioned to shape and shore up the legitimacy of particular news institutions. This paper explores the role played by an early twentieth-century sex-related social and moral panic over “white slavery” in transforming news practices. Beginning in 1907, stories proliferated in the U.S. mass media of White women kidnapped and sold into prostitution organized bands of immigrants, often alleged to be conspiring with top city officials. diachronic textual analysis of New York Times coverage of a 1910 white slavery investigation finds that reporters initially drew from a stock of sentimental narratives describe the investigation's findings. However, as the investigation grew increasingly problematic, the Times developed a detached orientation toward its object, similar to that demanded of professional journalists today. I examine how the Times engaged paradigm repair and significant historical revision to account for and defend its earlier articles on this controversial phenomenon.  相似文献   

Reconceptualise a dynamic framework of the learning constructs in higher education     

Gretchen Geng  Yue Zhu  Leigh Patrick Disney 《Higher Education Quarterly》2023,77(4):655-675

This paper reconceptualised the interrelated learning constructs in higher education based on the Dynamic Systems Theory (DST). The university students' learning experience before, during and post the Emergency Online Learning (EOL) was investigated to explore the dynamic changes among the learning constructs in higher education. A case study of a Chinese university was conducted, and one hundred and ninety-three university students participated in the questionnaire. The data collected from this empirical research identify different hierarchical constructs of the conceptualised learning environment and reconceptualise the period of system reformation influenced by the EOL. The key findings include the identifications of the attractors and repellors framed by the DST and the impact on the changes in the learning constructs. The results of this paper contribute to further understanding of the university constructs' changes to better plan and support students' active learning in higher education.  相似文献   

Social Justice in English Language Teaching,by Hastings,C., & Jacob,L. (Eds.)     

Gretchen Marie Whitman 《Journal of Language, Identity & Education》2018,17(5):353-355

  相似文献   

Examining the impact of the Respect in Sport Parent Program on the psychosocial experiences of minor hockey athletes     

Katherine A. Tamminen  Carolyn E. McEwen  Gretchen Kerr  Peter Donnelly 《Journal of sports sciences》2020,38(17):2035-2045

ABSTRACT

Models of positive youth development suggest that athletes may be influenced by parent education programmes; however, there is little research examining the impact of such programmes on athlete outcomes. This study examined the impact of the Respect in Sport Parent Program on athlete outcomes among minor hockey players over three years. This study consisted of cross-sectional and longitudinal online surveys measuring athletes’ positive and negative developmental experiences, prosocial and antisocial behaviours, parental support and pressure, and sport enjoyment and commitment. Athletes completed at least one online survey during the study period (N = 366; 84.2% males; 14–19 years of age; M = 15.4 years), and 83 athletes completed multiple surveys for longitudinal analyses. Cross-sectional results comparing athletes in leagues adopting the programme at different time points indicated significant differences in prosocial behaviours towards teammates. Multilevel longitudinal analyses revealed improvements in athletes’ antisocial behaviours towards opponents, initiative, goal setting, and cognitive skills over time, regardless of whether they were in a league that implemented the programme. However, athletes in leagues that implemented the programme during the study reported greater improvements in antisocial behaviours towards opponents, and there were trends with respect to improved personal and social skills. These findings provide suggestions to improve the delivery and impact of parent education programmes in youth sport.  相似文献   

Two-Year College Distance-Learning Students With Psychological Disorders: Counseling Needs and Responses     

Gretchen Warren 《Journal of College Student Psychotherapy》2018,32(4):270-281

  相似文献   

Crisis response in the public schools: A survey of school psychologists' experiences and perceptions     

Austin D. Adamson  Gretchen Gimpel Peacock 《Psychology in the schools》2007,44(8):749-764

In this study, 228 school psychologists completed a survey regarding crisis intervention teams and plans. The majority of respondents indicated their schools had crisis plans (95.1%) and teams (83.6%). The most common team activities endorsed by participants involved providing direct assistance and services to students, staff, and the media. The majority of participants (93%) reported that their schools had experienced and responded to serious crises. Respondents indicated that psychological debriefing was frequently used (generic 49.1% and standardized 17.9%). Less than half of the participants (44.3%) reported that meetings were conducted with parents and community members following a crisis. Nearly all of the participants (98.2%) reported that they had some type of crisis intervention training. However, many participants suggested that additional training and practice with crisis intervention would improve schools' crisis responses. Results are discussed with implications for school psychologists to improve their schools' crisis intervention plans and teams' responses. © 2007 Wiley Periodicals, Inc. Psychol Schs 44: 749–764, 2007.  相似文献   

Personal and Organizational Predictors of Compassion Fatigue Symptoms in Local Television Journalists     

Gretchen Dworznik 《Journalism Practice》2018,12(5):640-656

Compassion fatigue is a form of traumatic stress that results from repeated encounters with victims of trauma and traumatic situations. Most often studied in counselors, nurses, and first responders, this study applies the concept to journalists who often encounter the same victims and traumatic scenes. Seventy reporters from different television markets were measured for the personal and professional factors that contribute to compassion fatigue symptoms and its components of secondary traumatic stress and burnout. Results showed personal traumatic events and perceived peer support were the strongest predictors of compassion fatigue symptoms in television reporters. Implications for reporter self-care and newsroom protocols are discussed.  相似文献