Examination of the neuromechanical factors contributing to golf swing performance     

W. B. Sheehan  M. L. Watsford  E. C. Pickering Rodriguez 《Journal of sports sciences》2019,37(4):458-466

This study investigated the relationship between a range of neuromechanical variables in the lower- and upper-body, and golf performance. Participants were assessed for individual muscle stiffness, vertical stiffness (Kvert), flexibility, power and maximal isometric strength. Furthermore, golf performance was determined by handicap and club head speed. Pearson’s correlations quantified the relationships between neuromechanical variables and performance measures. Participants were also separated into relatively high club head speed (HC) and low club head speed (LC) groups and compared for physical characteristics. Club head speed showed positive relationships with Kvert and power and a negative relationship with hip mobility. The HC group exhibited superior Kvert and power, while strength and flexibility measures were not related to performance. Higher levels of lower-body stiffness, rate of force development and power output appear to be beneficial for generating superior club head speed. A stiffer system may reduce the time needed to remove the “slack” from the series elastic component therefore, reducing electromechanical delay and enhancing rate of force development. The large positive association with rate of force development suggests that increasing this component, along with power production may be superior focal components for training in golfers due to the short duration of the downswing.  相似文献   

Preference for punishment of the instrumental or the consummatory response     

Ward A. Rodriguez  Frank A. Logan 《Learning & behavior》1980,8(1):116-119

In two discriminable runways, rats were punished (shocked) either prior to receiving water reinforcement (punishment of the instrumental response) or after ingesting the water (punishment of the consummatory response). Both forced-choice and free-choice trials were conducted. Results indicate that rats preferred to have the instrumental response punished. It was also observed that the subjects more frequently failed to traverse the runway in which the consummatory response was punished compared to the runway in which the instrumental response was punished. The results were interpreted as being consistent with predictions derived from net incentive theory.  相似文献   

Supervisee Incompatibility and Its Influence on Triadic Supervision: An Examination of Doctoral Student Supervisors' Perspectives     

Serge F. Hein  Gerard Lawson  Christopher P. Rodriguez 《Counselor Education & Supervision》2011,50(6):422-436

A qualitative study was conducted to explore supervisors' experiences of supervisee incompatibility in triadic supervision. In‐depth interviews were completed with 9 doctoral student supervisors in a counselor education program, and a whole‐text analysis generated 3 categories. Supervisee incompatibility took a wide variety of forms and negatively affected the content of supervision, including its progress and productivity. It also negatively influenced the process of supervision, including the feedback and support offered by either the supervisor or the supervisees and the general atmosphere of supervision meetings. Implications of the findings for counseling supervision and for further research are also addressed.  相似文献   

Strategic Plan for a Processed Foods Company Using Megaplanning and Balanced Scorecard     

Ernesto A. Lagarda‐Leyva  Gulliver Castaeda‐Rodriguez  Ivan Soto‐Fierro 《Performance Improvement Quarterly》2016,28(4):27-54

This article presents a case study for a strategic plan developed using a megaplanning model approach, as well as the balanced scorecard proposal, for a company that produces processed foods in the southern state of Sonora in Mexico. The strategic planning process began with the ratification of the business mission and vision in an internal analysis of the company with the help of its employees in a dynamic participatory workshop in which they discussed perceived strengths and weaknesses. The next step was to perform the external analysis of the environment surrounding the company. Both analyses of the SWOT matrix immediately identified strategic objectives and strategies, as well as the scorecard, and concluded with a project proposal. The most significant results fall under the scope of two key strategies. The first regards innovation in business models; and the second, the expansion into new markets, which, along with the organization's philosophy, guides the future of the company. The main lessons learned are presented in the developmental stages of this case study, so it is important to emphasize that a special development in the results section, which can be useful for similar studies using the proposed methodology, be carried out. Finally, a strategic planning–oriented approach focusing on megaplanning represents a vision on how to add value to society, seeking to create interest among stakeholders to meet performance indicators that have a positive impact on the communities where the company is located.  相似文献   

Eliciting critical literacy narratives of bi/multilingual teacher candidates across U.S. teacher education contexts     

Terri L. Rodriguez  Hye-sun Cho 《Teaching and Teacher Education》2011,27(3):496-504

This paper examines critical literacy narratives of bi/multilingual preservice teachers across contexts in the United States. It draws upon empirical data from two studies—a narrative inquiry with Latino teacher candidates in the Midwest and a participatory action research project with bilingual preservice teachers in Hawaii—to examine participants’ identities and experience in academia. Preservice teachers in both studies resisted the labeling practice of “minority” and challenged simplistic notions of “bilingual teacher identity.” This cross-examination argues for further ways to explore how teacher preparation programs should create dialogic spaces for making the voices of diverse preservice teachers heard.  相似文献   

Fictive kinship as it mediates learning, resiliency, perseverance, and social learning of inner-city high school students of color in a college physics class     

Konstantinos Alexakos  Jayson K. Jones  Victor H. Rodriguez 《Cultural Studies of Science Education》2011,6(4):847-870

In this hermeneutic study we explore how fictive kinship (kin-like close personal friendship) amongst high school students of color mediated their resiliency, perseverance, and success in a college physics class. These freely chosen, processual friendships were based on emotional and material support, motivation, and caring for each other, as well as trust, common interests, and goals. Such close bonds contributed in creating a safe and supportive emotional space and allowed for friendly, cooperative competition within the physics classroom. Friends became the role models, source of support, and motivation for the fictive kinship group as well as for each other, as the group became the role model, source of support, and motivation for the individuals in it. Because of their friendships with one another, physics talk was extended and made part of their personal interactions outside the classroom. These social relationships and safe spaces helped the students cope and persevere despite their initial conflicting expectations of their success in physics. Our research thus expands on the concept of social learning by exploring student friendships and how they frame and mediate such a process.  相似文献   

Does data distribution change as a function of motor skill practice?     

Yan JH  Rodriguez WA  Thomas JR 《Research quarterly for exercise and sport》2005,76(4):494-499

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Is saying ‘sorry’ enough? examining the effects of apology typologies by organizations on consumer responses     

May O. Lwin  Jun-Qi Loh  Marilyn Hui-Ying Peh  Sarah Ann Rodriguez  Nur Hanisah Binte Zelani 《亚洲交流杂志》2017,27(1):49-64

Apology has been found to be the most effective strategy in times of crises. However, there is a dearth of research on the kinds of apology used and how primary stakeholders, in particular consumers, received them. This study aims to examine consumer responses to the types of apologies offered post crises against the levels of attribution of responsibility. We also assess the potential mediating role of ethical concerns by developing the Perception-Behavioral Model of Crisis Response. An experiment was conducted to ascertain consumers’ impression of the organization post-apology. The results showed that the attribution of crisis responsibility significantly influences complaining, withholding and negative word-of-mouth behaviors. However, a very high degree of apology issued by the organization does not necessarily translate to reduced negative responses from consumers in light of the large attribution of responsibility. Finally, the Perception-Behavioral Model of Crisis Response suggests that ethical concerns can mediate negative behavioral intentions from consumers.  相似文献   

Lumbopelvic motor control and low back pain in elite soccer players: a cross-sectional study     

Stéphanie Grosdent  Christophe Demoulin  Carlos Rodriguez de La Cruz  Romain Giop  Marco Tomasella  Jean-Michel Crielaard 《Journal of sports sciences》2016,34(11):1021-1029

This study aimed to investigate the relationship between the history of low back pain and quality of lumbopelvic motor control in soccer players. Forty-three male elite soccer players (mean age, 18.2 ± 1.4 years) filled in questionnaires related to low back pain and attended a session to assess lumbopelvic motor control by means of five tests (the bent knee fall out test, the knee lift abdominal test, the sitting knee extension test, the waiter’s bow and the transversus abdominis test). A physiotherapist, blinded to the medical history of the participants, scored (0 = failed, 1 = correct) the performance of the players for each of the tests resulting in a lumbopelvic motor control score ranging from 0 to 5. Forty-seven per cent of the soccer players reported a disabling low back pain episode lasting at least two consecutive days in the previous year. These players scored worse lumbopelvic motor control than players without a history of low back pain (lumbopelvic motor control score of 1.8 vs. 3.3, P < 0.01). The between-groups difference was particularly marked for the bent knee fall out test, the knee lift abdominal test and the transversus abdominis test (P < 0.01). In conclusion, most soccer players with a history of low back pain had an altered lumbopelvic motor control. Further research should examine whether lumbopelvic motor control is etiologically involved in low back pain episodes in soccer players.  相似文献   

El profesor como práctico reflexivo en una cultura de colaboración     

Luis Miguel Villar Angulo  P. de Vicente Rodriguez  A. Bolivar Botia  E. Molina Ruiz  M.J. Leon Guerrero  M.J. Gallego Arrufat 《欧洲师范教育杂志》1994,17(3):187-206

The aim was the reconstruction of a school curriculum in reflective teaching situations within a co‐operative culture. Two working assumptions were considered: (a) teacher development was based on teacher thinking and (b) school organisation followed a co‐operative culture paradigm. The process features were: (a) university team consisted of external advisers; (b) school curriculum and classroom instruction were reviewed by school teachers; (c) case study as a research approach; (d) ethnographic techniques to collect data; (e) data analysis by a computer program; (f) teachers’ reflective cycle to reconstruct practice; and (g) teachers’ portfolios: narrative vignettes, etc. Findings showed: (a) a collaborative process school‐university; (b) teachers’ thinking and attitudinal change; (c) mobilisation of teachers’ talents and values to work together: (i) teacher dyads to reflect on teaching; (ii) advisers’ writing narrative vignettes; (Hi) collegial coaching; and (iv) curriculum materials designed by teachers. Two conclusions can be accepted: (a) teachers’ pedagogical practical knowledge showed diversity of their implicit theories to design action; and (b) teachers’ grounded theory confirmed that the educational action was based on a co‐operative and reflective culture.  相似文献