Agreement in activity energy expenditure assessed by accelerometer and self-report in adolescents: variation by sex, age, and weight status     

Machado-Rodrigues AM  Coelho-E-Silva MJ  Mota J  Cyrino E  Cumming SP  Riddoch C  Beunen G  Malina RM 《Journal of sports sciences》2011,29(14):1503-1514

The agreement between self-reported and objective estimates of activity energy expenditure was evaluated in adolescents by age, sex, and weight status. Altogether, 403 participants (217 females, 186 males) aged 13-16 years completed a 3-day physical activity diary and wore a GT1M accelerometer on the same days. Partial correlations (controlling for body mass) were used to determine associations between estimated activity energy expenditure (kcal · min(-1)) from the diary and accelerometry. Differences in the magnitude of the correlations were examined using Fisher's r to z transformations. Bland-Altman procedures were used to determine concordance between the self-reported and objective estimates. Partial correlations between assessments of activity energy expenditure (kcal · min(-1)) did not differ significantly by age (13-14 years: r = 0.41; 15-16 years: r = 0.42) or weight status (normal weight: r = 0.42; overweight: r = 0.39). The magnitude of the association was significantly affected by sex (Δr = 0.11; P < 0.05). The agreement was significantly higher in males than in females. The relationship between activity energy expenditure assessed by the objective method and the 3-day diary was moderate (controlling for weight, correlations ranged between 0.33 and 0.44). However, the 3-day diary revealed less agreement in specific group analyses; it markedly underestimated activity energy expenditure in overweight/obese and older adolescents. The assessment of activity energy expenditure is complex and may require a combination of methods.  相似文献   

Perceptions of change and certainty regarding the self-as-exerciser: a multistudy report     

Mullen SP 《运动与训练心理学杂志》2011,33(5):710-733

The purpose of these studies was to examine the relationship between perceptions of exercise-related changes (i.e., perceived mastery and physical change) and certainty with regard to the self-as-exerciser. It was hypothesized that seeing "change" would be associated with more favorable levels of exercise self-certainty and behavior relative to "no change." Online surveys were repeatedly administered across 4 months (Study 1) and 4 weeks (Study 2) to 196 university students (M(age) = 20.17), and 250 community dwellers (M(age) = 38.44), respectively. Data were analyzed via latent variable modeling procedures. Consistent with hypotheses, latent classes (i.e., subgroups) reflecting interindividual differences in levels and trajectories of perceived change were associated with distinct patterns of self-certainty and exercise behavior. The findings suggest that adults who experience mastery of skills and physiological changes also have greater self-certainty and exercise more regularly than those who do not see progress or feel as certain of their exercise identity.  相似文献   

Effects of Diverse STEM Role Model Videos in Promoting Adolescents’ Identification     

Steinke  Jocelyn  Applegate  Brooks  Penny  Jay R.  Merlino  Sean 《International Journal of Science and Mathematics Education》2022,20(2):255-276

International Journal of Science and Mathematics Education - Role models are critical for broadening participation in science, technology, engineering, and mathematics (STEM); however, little is...  相似文献   

Expert anticipatory skill in striking sports: a review and a model     

Müller S  Abernethy B 《Research quarterly for exercise and sport》2012,83(2):175-187

Expert performers in striking sports can hit objects moving at high speed with incredible precision. Exceptionally well developed anticipation skills are necessary to cope with the severe constraints on interception. In this papr we provide a review of the empirical evidence regarding expert interception in striking sports and propose a preliminary model of expert anticipation. Central to the review and the model is the notion that the visual information used to guide the sequential phases of the striking action is systematically different between experts and nonexperts. Knowing the factors that contribute to expert anticipation, and how anticipation may guide skilled performance in striking sports, has practical implications for assessment and training across skill levels.  相似文献   

An ethic of care and educational practice     

Marcia McKenzie  Sean Blenkinsop 《Journal of Adventure Education & Outdoor Learning》2013,13(2):91-105

Abstract

This article explicates the theoretical framework of an ethic of care and outlines recommendations for applying the framework to practice in adventure education, offering possibilities for re-imagining organizations as centrally concerned with compassion and care. Focusing on the work of Gilligan and Noddings, we suggest an understanding of an ethic of care that is contextual, ungendered, and inclusive of both the private and public spheres of life, and draw parallels between this ethic and the philosophies underlying Outward Bound specifically, and adventure education more generally. Finally, we outline possibilities for organizing educational curricula around centres of care for self, others, and the natural world, using Noddings' suggested curricular components of modeling, dialogue, practice, and confirmation.  相似文献   

“Emerging” organized crime hypotheses in criminology textbooks: The case of African-American organized crime     

Sean Patrick Griffin 《Journal of Criminal Justice Education》2013,24(2):287-301

Contemporary textbooks exhibit competing historical perspectives regarding so-called “emerging” organized crime groups. Some texts argue that organized crime committed by groups other than Sicilian/Italian-Americans is now emerging. Others hold that many of the “emerging” groups have been organizing crime for some time and that it is the research in this area that is emerging. This paper briefly examines these propositions, presenting the two groups of thought regarding African-American organized crime. The author then presents a literature review of African-American organized crime research to assist scholars and instructors attempting to better understand the competing perspectives.  相似文献   

Natatanuran frogs used the Indian Plate to step-stone disperse and radiate across the Indian Ocean     

Zhi-Yong Yuan  Bao-Lin Zhang  Christopher J Raxworthy  David W Weisrock  Paul M Hime  Jie-Qiong Jin  Emily M Lemmon  Alan R Lemmon  Sean D Holland  Michelle L Kortyna  Wei-Wei Zhou  Min-Sheng Peng  Jing Che  Elizabeth Prendini 《国家科学评论(英文版)》2019,6(1):10

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Developing participation opportunities for young people with disabilities? Policy enactment and social inclusion in Australian junior sport     

Ruth Jeanes  Ramón Spaaij  Jonathan Magee  Karen Farquharson  Sean Gorman  Dean Lusher 《Sport in Society》2019,22(6):986-1004

Abstract

Interventions aimed at increasing the participation of young people with disabilities in recreational sport have had mixed success. The authors draw on in-depth interviews with representatives from State Sporting Associations, local government officers and volunteers within community sports clubs in Victoria, Australia, to examine why some sports clubs are unable or unwilling to translate policy ambitions into practice. The findings indicate how by framing disability provision as ‘too difficult’, ‘not core business’ and antithetical to competitive success, community sports clubs are able to resist policy ambitions to modify existing structures and develop more inclusive practice. Greater priority needs to be given to transformational inclusion objectives and challenging ableism if clubs are to structurally progress the development of participation opportunities for young people with disabilities.  相似文献   

Negotiating the cultural and economic outcomes of sport heritage attractions: the case of the National Baseball Hall of Fame     

Gregory Ramshaw  Sean Gammon  Felipe Tobar 《Journal of Sport Tourism》2019,23(2-3):79-95

ABSTRACT

Contemporary museums must balance their roles as commercial entities and repositories of various, and often dissonant, heritages and histories. Sports museums in particular often have clear commercial and nostalgic aims, particularly through tourist visitation, though the extent to which they represent more challenging narratives remains unclear. This paper examines how one of the most famous sports museums in the world, the National Baseball Hall of Fame (NBHF) in Cooperstown, New York, balances its dual role as tourist attraction and repository of baseball's sometimes checkered past. It was found that different sections of the museum provide greater or lesser degrees of engagement with more controversial issues, although the commercial outputs and appeal of the museum remains clear throughout. Utlimately, the NBHF demonstrates that balancing veneration and critique in collections can be commercially prosperous, and can provide a template for other sport and popular culture museums who may be wary of incorporating more challenging narratives in their exhibits. Furthermore, the symbiotic relationship between the Hall of Fame and the village of Cooperstown, particularly in creating and maintaining cultural and economic outputs, requires further exploration.  相似文献   

Talking bipedal ape writes book     

Hermanson  Sean 《Metascience》2019,28(2):285-288

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