A preliminary investigation of trunk and wrist kinematics when using drivers with different shaft properties     

Christopher Joyce  Angus Burnett  Jodie Cochrane  Alvaro Reyes 《Sports biomechanics / International Society of Biomechanics in Sports》2016,15(1):61-75

It is unknown whether skilled golfers will modify their kinematics when using drivers of different shaft properties. This study aimed to firstly determine if golf swing kinematics and swing parameters and related launch conditions differed when using modified drivers, then secondly, determine which kinematics were associated with clubhead speed. Twenty high level amateur male golfers (M ± SD: handicap = 1.9 ± 1.9 score) had their three-dimensional (3D) trunk and wrist kinematics collected for two driver trials. Swing parameters and related launch conditions were collected using a launch monitor. A one-way repeated measures ANOVA revealed significant (p ≤ 0.003) between driver differences; specifically, faster trunk axial rotation velocity and an early wrist release for the low kick point driver. Launch angle was shown to be 2° lower for the high kick point driver. Regression models for both drivers explained a significant amount of variance (60–67%) in clubhead speed. Wrist kinematics were most associated with clubhead speed, indicating the importance of the wrists in producing clubhead speed regardless of driver shaft properties.  相似文献   

Influence of carbohydrate mouth rinsing on running and jumping performance during early morning soccer scrimmaging     

Veronika Přibyslavská  Eric Michael Scudamore  Samantha Louise Johnson  James Matthew Green  Mary Caitlin Stevenson Wilcoxson  Jordan Blaine Lowe 《European Journal of Sport Science》2016,16(4):441-447

Carbohydrate mouth rinse (CMR) is a novel method proposed to enhance endurance performance lasting ≤ 60 min. The current study examined the influence of CMR on anaerobic performance tasks in 11 collegiate female soccer players after an overnight fast. Athletes completed two experimental sessions, during which carbohydrate (CHO; 6% maltodextrin) or taste- and colour-matched placebo (PLA) mouth-rinse solutions were administered in a counterbalanced, double-blinded design. Three rounds of a 5-min scrimmage bout and series of performance tests including a single countermovement vertical jump (1VJ), a set of four consecutive vertical jumps, a 72-m shuttle run (SR72) and 18-m sprint comprised each trial. Thirst sensation (TS), session TS, ratings of perceived exertion (RPE) and session RPE were assessed as secondary outcomes. The first SR72 approached significance (p = 0.069), but no significant between-trials differences were observed for any of the mean performance tasks. The highest 1VJ scores did not differ for the first (CHO = 47.3 ± 3.4, PLA = 47.7 ± 3.5 cm; p = 0.43), second (CHO = 48.0 ± 4.1, PLA = 47.9 ± 3.5 cm; p = 0.82) or third bout (CHO = 47.4 ± 3.9, PLA = 48.1 ± 3.9 cm; p = 0.26). TS approached significance (p = 0.053) during the first bout. No significant differences (p > 0.05) were found for any of the perceptual variables. Current results fail to support ergogenic influence of CMR on anaerobic performance tasks in collegiate female athletes.  相似文献   

Who has a Problem,the Student or the Teacher? Differences in Teachers' Beliefs About Their Work with At‐risk and Integrated Exceptional Students     

Anne Jordan  Gonul Kircaali‐Iftar  C.T. Patrick Diamond 《International Journal of Disability, Development & Education》1993,40(1):45-62

In this study, teachers' assumptions and beliefs are explored about the needs of at‐risk and exceptional students, and about their roles and responsibilities in meeting such needs. Teachers appear to hold consistent and coherent belief systems which differ along an ordinal scale. At one end, ‘restorative’ beliefs assume that problems reside largely within the pupil, and therefore the teacher's duty is to refer the pupil for confirmatory assessment as soon as possible. At the other ‘preventive’ end, teachers assume that the environment, including instruction, plays a part in a student's problems. The teacher therefore attempts prereferral interventions, and requests assessment to identify instructional alternatives. This study provides evidence for the validity of the restorative‐preventive construct, reporting the results of both quantitative and qualitative analyses of interviews with 27 regular class elementary teachers. Teachers' ratings on the construct correlated significantly with their self‐ratings of teaching efficacy (Gibson & Dembo, 1984). Teachers with preventive beliefs had higher self‐efficacy scores than those with a restorative profile. Further, teachers with restorative beliefs rated the withdrawal of problem pupils from the classroom as a more desirable resource service than preventive teachers, who preferred in‐class consultative support.  相似文献   

Words matter: interpretations and implications of “para” in paraprofessional     

Hannah Schilperoort  Alvaro Quezada  Frances Lezcano 《Journal of the Medical Library Association》2021,109(1):13

Objective:While studies from the early 1990s show that library staff in nonlibrarian roles interpret the term “paraprofessional” as being demeaning to their roles, no recent research has been conducted on this topic. This study aims to investigate if health sciences library staff continue to have similar negative associations with the term “paraprofessional” and to determine if another term is preferred.Methods:The authors conducted a literature review to identify terms used to categorize library staff in nonlibrarian roles. Using these terms, we created an online Qualtrics survey asking participants to rank terms by preference. We distributed the survey via thirty-six professional email discussion lists, including MEDLIB-L, thirty-three MLA chapter and caucus email discussion lists, DOCLINE-L, and ACRL-HSIG-L. Survey participants included full-time and part-time health sciences library staff in any nonlibrarian position. Responses from librarians were not accepted.Results:Based on 178 completed surveys, “library staff” was the top choice of 49% of participants, over “other” (19%), “paraprofessional” (13%), “library support staff” (11%), “paralibrarian” (7%), and “nonprofessional” (1%). Although “library staff” was the top choice of participants across all ages, older participants (aged 45–75) preferred “library support staff” and “paraprofessional” to a greater degree than younger participants (aged 18–44), while younger participants preferred “other” to a greater degree. Out of 36 participants who specifically mentioned the terms “paraprofessional” or “paralibrarian,” 32 (89%) of those comments were negative, indicating that the “para” in “paraprofessional” and “paralibrarian” is either insulting, inapplicable, or unfamiliar.Conclusions:Our results suggest that although the term “paraprofessional” may not intentionally be used to demean library staff, many library staff interpret the term to be demeaning to their roles. Instead, “library staff,” a more inclusive and less divisive term, was preferred by survey participants. In accordance with our results, we believe the term “paraprofessional” should no longer be used in library and information scholarly literature or professional discourse.  相似文献   

Muscle activity and spine load during anterior chain whole body linkage exercises: the body saw,hanging leg raise and walkout from a push-up     

Stuart McGill  Jordan Andersen  Jordan Cannon 《Journal of sports sciences》2015,33(4):419-426

This study examined anterior chain whole body linkage exercises, namely the body saw, hanging leg raise and walkout from a push-up. Investigation of these exercises focused on which particular muscles were challenged and the magnitude of the resulting spine load. Fourteen males performed the exercises while muscle activity, external force and 3D body segment motion were recorded. A sophisticated and anatomically detailed 3D model used muscle activity and body segment kinematics to estimate muscle force, and thus sensitivity to each individual's choice of motor control for each task. Gradations of muscle activity and spine load characteristics were observed across tasks. On average, the hanging straight leg raise created approximately 3000 N of spine compression while the body saw created less than 2500 N. The hanging straight leg raise created the highest challenge to the abdominal wall (>130% MVC in rectus abdominis, 88% MVC in external oblique). The body saw resulted in almost 140% MVC activation of the serratus anterior. All other exercises produced substantial abdominal challenge, although the body saw did so in the most spine conserving way. These findings, along with consideration of an individual's injury history, training goals and current fitness level, should assist in exercise choice and programme design.  相似文献   

New Horizons in Special Education: evidence-based practice in action – Edited by Barry Carpenter and Jo Egerton     

Rita Jordan 《British Journal of Special Education》2008,35(2):123-124

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Internalizing and Externalizing Behaviors of Children with Writing Disabilities     

Rebecca L. P. Jordan  Edmund P. Fernandez  Lara-Jeane C. Costa  Stephen R. Hooper 《Learning disabilities research & practice》2020,35(2):72-81

Students with specific learning disabilities (SLDs) are more likely to exhibit internalizing and externalizing behaviors than typically developing peers. Virtually none of the literature, however, reports on the behaviors of students at-risk for writing disabilities (AR-WD). We compared the behaviors of writers who are AR-WD and typically developing writers (TDW) from first through fourth grade (N = 138). We found that students who are AR-WD were only significantly different from TDW on Externalizing and Total Behaviors at Grade 2. These findings illustrate the benefits of studying behavior across different forms of SLD, as it appears that students ARWD do not consistently manifest significant behaviors, although interventions that simultaneously target writing and behavior may be warranted and mutually beneficial.  相似文献   

ETHICAL DILEMMAS IN TEACHING ETHICAL ISSUES IN AGING     

Jordan I. Kosberg  Wiley P. Mangum 《Educational gerontology》2013,39(8):767-774

Discussed are dilemmas faced by instructors who teach a course on ethics and aging. Decisions need to be made as to whether the course should utilize scientific objectivity or advocacy, relative or absolute standards, a theoretical/ intellectual or applied/personal orientation, and an age‐specific or age‐irrelevant view. Recommendations are provided for educational gerontologists who teach such a course.  相似文献   

Improving the Status of Teaching     

Archie C. Jordan 《College Teaching》2013,61(4):263-264

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Reflecting on the moral bases of critical pedagogy in PETE: toward a Foucaultian perspective on ethics and the care of the self     

Alvaro Sicilia-Camacho  Juan Miguel Fernández-Balboa 《Sport, Education and Society》2013,18(4):443-463

In teacher education and in physical education teacher education (PETE), the possibilities and pitfalls of critical pedagogy (CP) for transforming society have been frequently debated. From these debates, it has become quite clear that the lines separating ‘technocrats’ from ‘radicals’ are so strongly drawn that limit the advance of PETE. In the spirit of collegiality, we offer an alternative approach to CP based on Foucault's genealogical work on the History of Sexuality. It promotes a pedagogical perspective toward the development of ethics and the care of the self. We argue that this approach, far from discrediting what non-critical pedagogues do, can not only advance the practice of CP, but also open up new ways of conceptualizing PETE that are worth considering both by critical pedagogues and by the members of other pedagogical camps. We discuss the implications of this approach in the personal, social–professional and political spheres.  相似文献