A systematic review on small-sided games in football players: Acute and chronic adaptations     

Pascual Bujalance-Moreno  Pedro Ángel Latorre-Román  Felipe García-Pinillos 《Journal of sports sciences》2019,37(8):921-949

Small-sided games (SSG) are played on a small pitch, often using modified rules and involving a smaller number of players. This article aimed to critically analyse the literature to determine how small-sided games affect the performance of football players in the short- and long term. Electronic databases were searched for literature dating from January 2000 to July 2018. The methodological quality of the studies was evaluated using the modified Downs and Black Quality Index (cross-sectional studies) and the Physiotherapy Evidence Database (PEDro) scale (intervention studies). Fifty-three studies, 44 cross-sectional and 9 intervention studies, met the inclusionary criteria for review. Most of the cross-sectional studies focused on describing the differences between SSG protocols, whereas 4 studies focused on making a comparison between “interval” and “continuous” SSG training regimes. On the other hand, intervention studies focused on making a comparison between SSG-based protocols and high-intensity intermittent training (HIIT)-based running protocols, in addition to determine the effect of a SSG-based training programme alone. SSG-based football plans (2 to 4 SSG sessions per week) show athletic performance improvements in football players by improving sprint, repeated sprint ability (RSA) and change of direction (COD) along with muscular and physiological adaptation.  相似文献   

Effectiveness of pedalling retraining in reducing bilateral pedal force asymmetries     

Rodrigo R. Bini  Tiago C. Jacques  Felipe P. Carpes  Marco A. Vaz 《Journal of sports sciences》2017,35(14):1336-1341

ABSTRACT

Previous studies have been limited to describe asymmetries during pedalling and suggest possible repercussion on performance and/or injury risks. However, few studies have presented strategies to mitigate asymmetries. The purpose of this study was to assess the effectiveness of a pedalling retraining intervention to reduce bilateral pedal force asymmetries. Twenty cyclists were assessed and 10 enrolled in a pedalling retraining method receiving visual and verbal feedback of pedal forces. The asymmetry index was computed for comparison of bilateral peak pedal forces and used during retraining (12 trials at 70% of peak power). Significantly larger asymmetry was observed for asymmetrical cyclists at the first three trials (P < 0.01 and ES = 1.39), which was reduced when post-retraining was compared to measures from symmetrical cyclists (P = 0.69 and ES = 0.18). Cyclists with larger asymmetry (>20%) in bilateral pedal forces reduce their asymmetries using sessions of pedalling retraining and achieve asymmetry indices similar to symmetrical cyclists.  相似文献   

The Severe Exercise Domain Amplitude: A Comparison Between Endurance Runners and Cyclists     

João A. G. Raimundo  Tiago Turnes  Rafael A. de Aguiar  Felipe D. Lisbôa  Thiago Loch  Guilherme Ribeiro 《Research quarterly for exercise and sport》2019,90(1):3-13

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Artistic Techniques in Heritage Education: An Exploratory SHEO‐Based Study     

Carmen Gmez‐Redondo  Lucía Valle‐Gmez  Olaia Fontal 《The International Journal of Art & Design Education》2021,40(1):35-51

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Participation in the figured world of graffiti     

Imuris Valle  Eduardo Weiss 《Teaching and Teacher Education》2010

This article is based on ethnographic work with two “crews” of young graffiti artists in southern Mexico City. The crews share certain characteristics with gangs or urban tribes, but more with “communities of practice”: they live in the “figured world” of graffiti, a community of practice at the local and global level. Through participation, including observation and the study of fanzines, group members learn the language, technical and social skills, and values of this figured world. Their reasons to paint and the topics they express are varied, but authentic expression is fundamental. Graffiti allows these young people to establish an interesting interplay of identities in the world of graffiti versus their ordinary lives.  相似文献   

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   

Broken gears: the value added of higher education on teachers’ academic achievement     

Carlos Felipe Balcázar  Hugo Ñopo 《Higher Education》2016,72(3):341-361

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The ABCs of private equity and venture capital data and information     

Jordan Nielsen  Erin Wachowicz  Benjamin Hall  Holly Inglis  Felipe Castillo 《Journal of Business & Finance Librarianship》2017,22(3-4):231-238

ABSTRACT

In June 2017, the Business Reference & Services Section of the Reference & User Services Association organized and hosted an event known as the Publishers' Forum during the annual American Library Association Conference in Chicago, Illinois. The Publishers' Forum is a professional development event that brings together business librarians and publishers of business information to engage in a discussion about business information products. The theme of the 2017 Publishers' Forum was private equity and venture capital data and information, and three different publishers were invited to speak and showcase their information products. This article will provide an overview of the Publishers' Forum, discuss the selection of private equity and venture capital as the theme, and highlight the importance of private equity and venture capital to business librarianship. Finally, this article will include a discussion of each of the publishers who presented at the Publishers' Forum and the information products they showcased.  相似文献   

Modelos de lectura y dislexias     

Fernando Cuetos  Francisco Valle 《Infancia y Aprendizaje》2013,36(44):3-19

Resumen

En este artículo se hace una revisión de las dislexias a partir de los modelos de lectura. Para ello se comienza por describir el modelo de lectura que, según los datos empíricos, rige la ejecución de los lectores normales. A partir de la literatura publicada se puede comprobar que los diferentes tipos de trastornos lectores se pueden explicar a partir del modelo. Se termina comentando las importantes implicaciones de este enfoque en el tratamiento de las dislexias en particular y en los métodos de enseñanza de la lectura en general.  相似文献   

Classification and Subject Indexing Issues at a Mexican Library Specializing in Law Research     

Filiberto Felipe Martínez-Arellano  Federico Hernández-Pacheco  Efrén Chávez-Hernández 《Cataloging & classification quarterly》2013,51(2-3):91-105

Abstract

Subject indexing and classification of law resources is a complex issue due to several factors: specialized meanings of legal terms, meanings across different branches of law, terms in legal systems from diverse countries, and terms in different languages. These issues led to the development of a classification and subject indexing system which will help answer the major challenges of indexing and classifying law resources in the Research Institute Library at the National Autonomous University of Mexico. Adopting its own classification required interdisciplinary work between law and information organization specialists, constant updating by legal specialists and others beyond the Legal Research Institute; and the sharing of this classification system with other institutions. Now, this classification system is used by important institutions that specialize in law, such as the network of Libraries of the Supreme Court of Justice of the Nation of Mexico. The purpose of this article is to show why and how this law classification and subject system was developed and is continuously being updated by libarians and law scholars in order for it to meet their specific needs.  相似文献