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91.
Dr. William J. Vincent Dr. Don S. Dorsey 《Research quarterly for exercise and sport》2013,84(4):1101-1106
Abstract This study was designed to investigate the relationships between three measures of body image and two measures of physiological performance. The Fisher-Cleveland Barrier Index, the Secord Homonym Test, and the Body Cathexis Questionnaire were correlated with dominant hand grip strength and the Michael-Gallon revision of the Harvard Step Test. Pearson's r was employed to determine the degree of relationship. Fifty males selected at random from general education classes at San Fernando Valley State College constituted the research sample. Of the six possible pairings only one reached statistical significance: the Homonym Test and grip strength (r = .33 at .05 level). It was concluded that a general relationship does not seem to exist between the measures of body image and physiological performance utilized in this study. These and other findings led the authors to re-examine several questions concerning the nature of body image phenomena. 相似文献
92.
Jonathan D. Bartlett Graeme L. Close Don P. M. MacLaren Warren Gregson Barry Drust 《Journal of sports sciences》2013,31(6):547-553
Abstract The aim of this study was to objectively quantify ratings of perceived enjoyment using the Physical Activity Enjoyment Scale following high-intensity interval running versus moderate-intensity continuous running. Eight recreationally active men performed two running protocols consisting of high-intensity interval running (6×3 min at 90% [Vdot]O2max interspersed with 6×3 min active recovery at 50% [Vdot]O2max with a 7-min warm-up and cool down at 70% [Vdot]O2max) or 50 min moderate-intensity continuous running at 70% [Vdot]O2max. Ratings of perceived enjoyment after exercise were higher (P < 0.05) following interval running compared with continuous running (88 ± 6 vs. 61 ± 12) despite higher (P < 0.05) ratings of perceived exertion (14 ± 1 vs. 13 ± 1). There was no difference (P < 0.05) in average heart rate (88 ± 3 vs. 87 ± 3% maximum heart rate), average [Vdot]O2 (71 ± 6 vs. 73 ± 4%[Vdot]O2max), total [Vdot]O2 (162 ± 16 vs. 166 ± 27 L) or energy expenditure (811 ± 83 vs. 832 ± 136 kcal) between protocols. The greater enjoyment associated with high-intensity interval running may be relevant for improving exercise adherence, since running is a low-cost exercise intervention requiring no exercise equipment and similar relative exercise intensities have previously induced health benefits in patient populations. 相似文献
93.
Ezio Preatoni Manuela Ferrario Giulia Donà Joseph Hamill Renato Rodano 《Journal of sports sciences》2013,31(12):1327-1336
Abstract This aim of this study was to analyse the nature of movement variability and to assess whether entropy measures may represent a valuable synthetic index of neuromuscular organization. The regularity of kinematic/kinetic time series during race walking, the changes in the structure of intra-individual variability over the test session, and the influence of athletic skill in (inter)national rank athletes were investigated. Motion analysis techniques were used. Sample entropy (SampEn) was adopted to examine fluctuations in lower limb angles and ground reaction forces. The regularity of both original and surrogate time series was assessed and compared, by estimating SampEn, to verify the presence of non-linear features in movement variability. SampEn was statistically lower in the original data than in surrogates. In contrast, the regularity of time series did not change significantly throughout the subsequent intra-individual repetitions. Hip and ankle joint angles and vertical ground reaction force manifested increased entropy for skilled athletes. Results suggest that race walking variability was not only the product of random noise but also contained information about the inherent propriety of the neuro-musculo-skeletal system. Furthermore, they provide some indications about neuromuscular control of the lower limb joints during race walking gait, and about the differences between more and less skilled individuals. 相似文献
94.
Kofi Marfo Thomas E. Dinero Noel Browne Don Gallant Rosalind Smyth Allan Corbett 《Early education and development》1992,3(1):27-44
This study is based on a conceptual framework which emphasized the importance of viewing early intervention outcomes in relation to both program and nonprogram variables. Three broad classes of independent variables were included in the framework child, program, and family ecology. The unique and combined contributions of these three sets of variables to the prediction of three indices of intervention outcome was assessed through regression techniques. As much as 68% of the variance in children's post-intervention developmental age (DA2) was explained by the combined influence of all three classes of variables. All three classes of variables again contributed uniquely to the prediction of parental satisfaction with the intervention, explaining 45% of the variance. The three classes of variables explained 36% of the variance in children's rate of development during the intervention (RDI), although the contribution of the program class was very minimal. In addition to ascertaining the contributions of sets of variables, the importance of individual variables within sets was also examined. Results from both types of analysis underscored the important role of nonprogram variables in the determination of both child and parental outcomes. The implications of these findings for the design and evaluation of early intervention are discussed. 相似文献
95.
Self-regulating academic learning and achievement: The emergence of a social cognitive perspective 总被引:8,自引:0,他引:8
Barry J. Zimmerman 《Educational Psychology Review》1990,2(2):173-201
For three decades, social cognitive researchers have studied children's development of self-regulation as an achievement of socialization processes. I recount historically the emergence of a social cognitive perspective on self-regulation and identify its unique features. Two essential characteristics of students' self-regulated academic learning have been identified — their use of strategies and perceptions of self-efficacy. A social cognitive model of academic self-regulated learning is proposed that integrates triadic determinants of self-regulated learning (personal, behavioral, and environmental) on the basis of a strategic control loop. When students monitor their responding and attribute outcomes to their strategies, their learning becomes self-regulated, and they display increased self-efficacy, greater intrinsic motivation, and higher academic achievement. 相似文献
96.
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
97.
98.
99.
The present paper points out that there are tasks that primary groups perform better than bureaucracies and those that bureaucracies perform better than primary groups. Both types of tasks are very interdependent so that sometimes primary group tasks must be performed within the boundaries of the bureaucratic organization. The argument is made that when primary groups intervene in bureaucracies, they can do so directly in non-expert tasks without lowering the effectiveness of the bureaucratic organization. When they intervene in expert aspects, they should do so indirectly through an expert advocate. However, in all intervention the primary group must take into account that its structure is contradictory to that of the bureaucracy and, therefore, it must keep as much distance as possible—consistent with its ability to intervene. From this analysis we derive a series of hypotheses suggesting when the community might ideally use the bureaucracy's own experts, when the community must hire its own experts, when the community should use mass media, strikes, indigenous workers, etc. It is suggested that the multitudinous possibilities for linkages can all be derived from a few basic underlying dimensions of the situation.
Résumé Cet article montre qu'il existe certaines tâches que les groupes primaires accomplissent mieux que les bureaucraties, et certaines autres qu'accomplissent mieux les bureaucraties. Les deux sortes de tâches sont interdépendentes; donc parfois les tâches des groupes primaires doivent s'accomplir parmi les organisations bureaucratiques. Les auteurs soutiennent que les groupes primaires peuvent intervenir dans les bureaucraties en complétant les tâches non-expertes sans réduire l'efficacité de l'organisation bureaucratique. Quands ils participent à certains sujets experts, ils devraient se munir d'un agent expert. Mais dans toute intervention le groupe primaire doit se rendre compte que sa structure contredit celle de la bureaucratie et que, par conséquent, il doit se tenir autant à distance que possible par rapport à sa compétence d'intervention. De cette analyse proviennent des hypothèses qui indiquent quand une communauté peut se servir le mieux du personnel expert d'une bureaucratie, quand la communauté doit engager des experts, quand la communauté doit se servir des mass média, des grèves, des ouvriers indigènes, etc. Les nombreuses possibilités de liaisons proviennent toutes de quelques dimensions fondamentales de la situation.相似文献
100.
Disseminating the right information to the right audience: cultural determinants in the use (and misuse) of rankings 总被引:1,自引:0,他引:1
Rankings and league tables, or Report Cards (RCs), of Higher Education Institutions have become a global phenomenon. Their
purpose, it is claimed, is to help “student-consumers” make informed decisions. Yet the degree to which RCs succeed in helping
students in their college choice is disputed. Even though RCs are intended for all, which information is sought and how it
is used may differ between potential students hailing from different social, economic and cultural backgrounds. In particular,
RCs may neglect certain cultural determinants that influence students’ college choice behaviour. The article reviews the literature
on the cultural determinants of college choice and especially the use of RCs in the ambit of cultural determinants. In the
United States, possibly because of evident educational gaps between ethnic groups in society, the issue of cultural perceptions
in college choice has been addressed, albeit scantly. In Europe, this field of study is virtually non-existent, despite increasing
indications that second and third generation immigrants still lag behind in terms of higher education participation and graduation
rates.
相似文献
Jürgen EndersEmail: |