Bidirectional cross-sectional and prospective associations between physical activity and body composition in adolescence: birth cohort study     

Hallal PC  Reichert FF  Ekelund U  Dumith SC  Menezes AM  Victora CG  Wells J 《Journal of sports sciences》2012,30(2):183-190

The aim of this study was to investigate the cross-sectional and prospective associations between physical activity and body composition in adolescence. This is a prospective study, including 4,103 adolescents belonging to the Pelotas (Brazil) 1993 birth cohort, who were followed up at the mean ages of 11.3 and 14.7 years. Subsample analyses included 511 individuals with accelerometry and deuterium dilution data at 13.3 years. Sum of skinfolds at age 11.3 years was highly correlated with skinfolds at age 14.7 years (rho = 0.74, P < 0.001). More than 85% of participants remained in the same quintile or changed by not more than one quintile during the 3.4 year period. Tracking of physical activity was considerably lower, although still significant; the correlation was 0.24 (P < 0.001) and 61.4% of the adolescents moved one or less quintiles. In fully-adjusted models, no significant cross-sectional or longitudinal associations were found between physical activity and body composition, neither in boys nor in girls. These null results were confirmed in the 511 individuals with accelerometry and deuterium data. We provide evidence of tracking of physical activity and particularly body composition during adolescence. Our results do not support the hypothesis that physical activity and fatness are strongly related in adolescents.  相似文献   

Proceedings, 109th Annual Meeting Medical Library Association,Inc. Honolulu,HI May 15–20, 2009     

Kristine M. Alpi  Diana Delgado 《Journal of the Medical Library Association》2010,98(1):E-1-39

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Returning To Marx: A communist critical pedagogy for the 21st century     

Michelle Gautreaux  Sandra Delgado 《Educational Philosophy and Theory》2016,48(11):1190-1193

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Google Scholar,Web of Science,and Scopus: A systematic comparison of citations in 252 subject categories   总被引：1，自引：0，他引：1  

Alberto Martín-Martín  Enrique Orduna-Malea  Mike Thelwall  Emilio Delgado López-Cózar 《Journal of Informetrics》2018,12(4):1160-1177

Despite citation counts from Google Scholar (GS), Web of Science (WoS), and Scopus being widely consulted by researchers and sometimes used in research evaluations, there is no recent or systematic evidence about the differences between them. In response, this paper investigates 2,448,055 citations to 2299 English-language highly-cited documents from 252 GS subject categories published in 2006, comparing GS, the WoS Core Collection, and Scopus. GS consistently found the largest percentage of citations across all areas (93%–96%), far ahead of Scopus (35%–77%) and WoS (27%–73%). GS found nearly all the WoS (95%) and Scopus (92%) citations. Most citations found only by GS were from non-journal sources (48%–65%), including theses, books, conference papers, and unpublished materials. Many were non-English (19%–38%), and they tended to be much less cited than citing sources that were also in Scopus or WoS. Despite the many unique GS citing sources, Spearman correlations between citation counts in GS and WoS or Scopus are high (0.78-0.99). They are lower in the Humanities, and lower between GS and WoS than between GS and Scopus. The results suggest that in all areas GS citation data is essentially a superset of WoS and Scopus, with substantial extra coverage.  相似文献   

Results or Participation?: Reconsidering Olympism's Approach to Competition     

Cesar R. Torres 《Quest (Human Kinetics)》2013,65(2):242-254

In spite of the privileged position that Olympism arguably occupies within the Olympic Movement, its understanding and implementation have been a challenging task. This is due to a lack of specificity, conceptual lacunas, and inconsistencies in the interpretation and elucidation of Olympism. One inconsistency pertains to the meaning and emphasis of results in Olympic contests. In this regard, the Olympic creed and the Olympic motto seem to send contradictory messages. This paper investigates the role that results should have in Olympic contests and, more broadly, in an enlightened sporting life. It argues that the most developed approach to the sporting and Olympic life is one in which the process of contesting and its ensuing results come together to form a meaningful unity.  相似文献   

Co-operatives and education in the Basque Country: the ikastolas in the final years of Franco’s dictatorship     

Ander Delgado 《History of education》2013,42(5):676-690

This article analyses the creation of the schools called ikastolas throughout the Basque Country from the 1960s onwards. The name ikastola refers to a unique school model whose major characteristic is to teach the majority of subjects in the Basque language, or euskera. It outlines the reasons why some of these schools took a co-operative organisational form and describes their major characteristics. The first part analyses the opportunities created under the Francoist regime for this kind of school, despite the repressive character of the dictatorship in other fields. The second part of the paper examines the important influence of the Mondragón co-operative movement, especially through its financial institution, in the creation of these educational co-operatives. The third and last part emphasises the role played by social mobilisation in defence of the Basque language in the creation of these schools and how this factor tied in with a co-operative governance system.  相似文献   

Empathy and critical thinking: primary students solving local environmental problems through outdoor learning     

David Ampuero  Christian E. Miranda  Luisa E. Delgado  Samantha Goyen  Sean Weaver 《Journal of Adventure Education & Outdoor Learning》2013,13(1):64-78

The present study explores the outcomes of teaching empathy and critical thinking to solve environmental problems. This investigation was done throughout the duration of an environmental education course within a primary school located in central Chile. A community-based research methodology was used to understand the formation of empathy and critical thinking. The findings reveal a significant benefit in using empathy strategies to engage students regarding the thinking processes involved with solving environmental problems. Using these elements as teaching techniques for environmental education courses can be very helpful in reaching the aims of creating a sustainable citizenry.  相似文献   

Individual differences and the development of joint attention in infancy   总被引：4，自引：0，他引：4  

Mundy P  Block J  Delgado C  Pomares Y  Van Hecke AV  Parlade MV 《Child development》2007,78(3):938-954

This study examined the development of joint attention in 95 infants assessed between 9 and 18 months of age. Infants displayed significant test-retest reliability on measures of following gaze and gestures (responding to joint attention, RJA) and in their use of eye contact to establish social attention coordination (initiating joint attention, IJA). Infants displayed a linear, increasing pattern of age-related growth on most joint attention measures. However, IJA was characterized by a significant cubic developmental pattern. Infants with different rates of cognitive development exhibited different frequencies of joint attention acts at each age, but did not exhibit different age-related patterns of development. Finally, 12-month RJA and 18-month IJA predicted 24-month language after controlling for general aspects of cognitive development.  相似文献   

Nothing in the History of Spanish <Emphasis Type="Italic">Anís</Emphasis> Makes Sense,Except in the Light of Evolution     

Juan Antonio Delgado  Ricardo Luis Palma 《Science & Education》2011,20(2):141-157

We describe, discuss and illustrate a metaphoric parallel between the history of the most famous Spanish liqueur, “Anís del Mono” (Anís of the Monkey), and the evolution of living organisms in the light of Darwinian theory and other biological hypotheses published subsequent to Charles Darwin’s Origin of Species. Also, we report the use of a caricature of a simian Darwin with a positive connotation, perhaps the only one ever produced. We conclude that, like some species in the natural world, Anís of the Monkey has evolved, adapted, survived and become the fittest and most successful anís in the Spanish market and possibly the world. We hope this paper will contribute a new useful metaphor for the teaching of biological evolution.  相似文献   

Identification of Early Risk Factors for Developmental Delay     

Christine E. F. Delgado  Sara J. Vagi  Keith G. Scott 《Exceptionality》2013,21(2):119-136

Statewide birth certificate and preschool exceptionality records were integrated to identify risk factors for developmental delay (DD). Epidemiological methods were used to investigate both individual-level and population-level risk for DD associated with a number of child and maternal factors. Infants born with very low birth weight were at the greatest individual-level risk for DD, whereas prematurity (gestational age less than 37 weeks) and low maternal education posed the greatest population-level risk. For comparative purposes, individual-level risk for speech disability and other developmental disabilities was also determined. The individual-level risk associated with nearly all factors was significantly greater for DD than for speech disability or other developmental disabilities. The present study suggests that information available from birth certificate records can be used to target screening and early intervention services for children at high risk with the goal of reducing the incidence of DD and subsequent associated disabilities.  相似文献