Effectiveness of Rest,Abdominal Cold Packs,and Cold Showers in Relieving Fatigue     

Elmo S. Roundy  Larry Don Cooney 《Research quarterly for exercise and sport》2013,84(3):690-695

Abstract

The purpose of this study was to compare three methods of relieving fatigue between bouts of strenuous exercise—rest, abdominal cold packs, and cold showers. Fifteen subjects were used in the study; each subject participated in each of the three treatments, making a total of 45 measurements. The subjects ran on a treadmill which was set at 8 mph with a 10 percent elevation, until their pulse rates reached 180 beats per minute. One of the three treatments was then applied for 10 min., after which the subjects engaged in a second treadmill run until heart rates reached 180 beats per minute. The time of the second treadmill run was the main criterion measure.

A complete randomized block design was used to test the differences among the three treatments for statistical significance. The Newman-Keuls sequential range test was employed to test differences between all possible pairs of treatment. Abdominal cold packs proved to be the most effective treatment, with the cold shower second and rest third.  相似文献   

Reply to Collins and Hodges     

Larry D. Hensley  Whitfield B. East  Jim L. Stillwell 《Research quarterly for exercise and sport》2013,84(3)

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Baumgartner's Modified Pull-Up Test For Male and Female Elementary School Aged Children     

Allen Jackson  Larry Bruya  William Baun  Peggy Richardson  Robert Weinberg  Irma Caton 《Research quarterly for exercise and sport》2013,84(2):163-164

Abstract

Nineteen college men and women (aged 18–23 yrs, × = 21.1) were studied to ascertain the force-time components of a rapid maximal voluntary isometric contraction (MVC) for ankle dorsiflexors, knee extensors, elbow flexors, wrist flexors and hand grip. Standardized isometric strength testing protocol was used. After a practice period subjects were instructed to make an MVC without jerking and as quickly as possible, for each of the muscle actions noted above. Force readings were taken from a load cell assembly through an analogue-to-digital converter and analyzed to yield time values for MVC, 3/4 MVC, 1/2 MVC, and 1/4 MVC. The results indicated significant differences (p < .01) between the responses of the men and women, with the women reaching full MVC more rapidly than the men. Also, there were significant differences among the five muscle groups tested, with the wrist flexor muscle group developing MVC most quickly, while the knee extensors took the longest time to full MVC. Based upon these data it may be concluded that the time to full MVC differs between men and women, and also that the time to full MVC differs among the five muscle groups tested in this experiment.  相似文献   

From students to teachers: using surveys to build a culture of evidence and inquiry     

Larry Ludlow  Joseph Pedulla  Sarah Enterline  Marilyn Cochran‐Smith  Fran Loftus  Yves Salomon‐Fernandez 《欧洲师范教育杂志》2008,31(4):319-337

In an effort to make decisions about teacher education policy and practice that were informed by research and evidence, participants in Boston College's ‘Teachers for a New Era’ Evidence Team (http://www.teachersforanewera.org) designed a portfolio of assessments and studies. This article describes one project in the portfolio – a series of surveys that trace teacher candidates' experiences over time and track shifts in these experiences as respondents progress from students during the pre‐service period to teachers in the first few years of work in the profession. The article illustrates how various constituencies in the teacher education programme and the larger university used survey data to guide practice, shape policies, and raise new questions about the curriculum, relationships with schools, and the performance of teachers and their pupils. The article argues that these surveys helped to create a new ‘culture of evidence and inquiry’ within which decisions about local policy and practice were made in the teacher preparation programme and the larger university.  相似文献   

Relationships between students' meaningful learning orientation and their understanding of genetics topics     

Ann M. Liberatore Cavallo  Larry E. Schafer 《科学教学研究杂志》1994,31(4):393-418

This study explored factors predicting the extent to which high school students (N = 140) acquired meaningful understanding of the biological topics of meiosis, the Punnett-square method, and the relationships between these topics. This study (a) examined mental modeling as a technique for measuring students' meaningful understanding of the topics, (b) measured students' predisposed, generalized tendency to learn meaningfully (meaningful learning orientation), (c) determined the extent to which students' meaningful learning orientation predicted meaningful understanding beyond that predicted by aptitude and achievement motivation, (d) experimentally tested two instructional treatments (relationships presented to students, relationships generated by students), (e) explored the relationships of meaningful learning orientation, prior knowledge, instructional treatment, and all interactions of these variables in predicting meaningful understanding. The results of correlations and multiple regressions indicated that meaningful learning orientation contributed to students' attainment of meaningful understanding independent of aptitude and achievement motivation. Meaningful learning orientation and prior knowledge interacted in unique ways for each topic to predict students' attainment of meaningful understanding. Instructional treatment had relatively little relationship to students' acquisition of meaningful understanding, except for learners midrange between meaningful and rote. These findings imply that a meaningful learning approach among students may be important, perhaps as much or more than aptitude and achievement motivation, for their acquisition of interrelated, meaningful understandings of science.  相似文献   

Change in Student Perceptions of Course and Instructor Following Curriculum Change     

Vipin K. Agrawal  Poonam Khanna  Vijay K. Agrawal  Larry W. Hughes 《Decision Sciences Journal of Innovative Education》2020,18(3):481-516

Ongoing curriculum change in higher education is essential to enhance student learning and better prepare them for the job‐market. However, research shows that faculty are reluctant to implement such changes because students generally react adversely thereby negating any potential benefits, and moreover, sanction faculty through lower evaluations and future enrollment. Yet, understanding of the effect of curriculum changes on students’ course and instructor perceptions is limited. In this article we attempt to fill this gap. Drawing on two empirical findings—students’ motivation to attend college becoming increasingly extrinsic since the 1960s and their inability to recognize, ex ante, the value‐added by a curriculum change—and the norm life‐cycle theory, we argue that any effort‐increasing or grade‐threatening change is viewed as non‐normative and will lead to an adverse student reaction. However, this adverse reaction will dissipate over time once a critical mass of students is convinced of the merits of the new curriculum. We find support for our hypotheses by analyzing change in student perceptions following curriculum changes at a U.S. University. In addition, we also find that once the adverse reaction dissipates, students’ perceptions of the new curriculum become more positive than the old curriculum, only to be reversed once the revised curriculum is accepted as the new norm.  相似文献   

Message from the “Island group”: What is literacy in science literacy?     

Brian M. Hand  Donna E. Alvermann  James Gee  Barbara J. Guzzetti  Stephen P. Norris  Linda M. Phillips  Vaughan Prain  Larry D. Yore 《科学教学研究杂志》2003,40(7):607-615

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Mothers' Concepts of Young Children's Areas of Personal Freedom   总被引：2，自引：0，他引：2  

Larry Nucci  Judith G. Smetana 《Child development》1996,67(4):1870-1886

White suburban working- to upper-middle-class mothers ( N = 40) of children ages 5 and 7 were interviewed regarding their concepts of children's areas of personal discretion, autonomy, and individuality. Mothers treated standardized moral, conventional, and prudential items as issues that mothers should control, while standardized personal items were treated as up to the child. In open-ended interviews, mothers reported setting limits around issues of safety, family conventions, and daily routines but permitted children to make decisions about food, recreational activities, clothes, and playmates. Mothers viewed mother-child conflict as occurring over these same issues and viewed children's choices as helping them to develop autonomy and competence. Mothers viewed their roles as educators and nurturers and valued the development of individuality in their children, which was thought to emerge in infancy or toddlerhood. Few age differences were observed, but gender differences were found in the ways mothers characterized boys and girls' resistances to parental authority and in the content of mother-child disputes. Results were interpreted in terms of the emergence of the personal domain in children.  相似文献   

Elementary school teachers' beliefs about and perceptions of elementary school science,science reading,science textbooks,and supportive instructional factors     

James A. Shymansky  Larry D. Yore  Ronald Good 《科学教学研究杂志》1991,28(5):437-454

This article is a report of elementary school teachers' beliefs about and uses of text material in science. Survey results from 522 K-8 teachers from 299 schools in the United States, Puerto Rico and the Virgin Islands were analyzed along three dimensions: teacher attitudes toward teaching of reading in science; teacher beliefs and understanding about models of reading, factors influencing science reading and reading skills; and teacher use of various teaching strategies. Results suggest that teachers do not see reading science as different from any other narrative material. And though most agreed to the importance of having students do activities to support and enhance the use of text material, responses suggest that covering topics is still a concern for most elementary teachers.  相似文献   

Students’ Research-Informed Socio-scientific Activism: Re/Visions for a Sustainable Future     

Larry Bencze  Erin Sperling  Lyn Carter 《Research in Science Education》2012,42(1):129-148

In many educational contexts throughout the world, increasing focus has been placed on socio-scientific issues; that is, disagreements about potential personal, social and/or environmental problems associated with fields of science and technology. Some suggest (as do we) that many of these potential problems, such as those associated with climate change, are so serious that education needs to be oriented towards encouraging and enabling students to become citizen activists, ready and willing to take personal and social actions to reduce risks associated with the issues. Towards this outcome, teachers we studied encouraged and enabled students to direct open-ended primary (e.g., correlational studies), as well as secondary (e.g., internet searches), research as sources of motivation and direction for their activist projects. In this paper, we concluded, based on constant comparative analyses of qualitative data, that school students’ tendencies towards socio-political activism appeared to depend on myriad, possibly interacting, factors. We focused, though, on curriculum policy statements, school culture, teacher characteristics and student-generated research findings. Our conclusions may be useful to those promoting education for sustainability, generally, and, more specifically, to those encouraging activism on such issues informed by student-led research.  相似文献