Purpose: The purpose of this project was to utilise global-positioning system (GPS) technology to understand the physical demands of youth international field hockey. Methods: Sixteen male field hockey players (age 17.1 ± 0.6 y, stature 165 ± 11 cm, body mass 63.3 ± 6.6 kg, estimated VO2max, 52.6 ± 5.3 ml/kg/min) were investigated while competing in 6 matches at the 2011 Boy’s Under-18 Asia Cup...

The Purdue Neurotrauma Group began in 2009 to study causes and consequences of concussion in youth athletes in an effort to understand why, in a two-player collision that produced a diagnosed injury, it was only one— rather than each—athlete that evidenced symptoms. Our work applies the concept of structural health monitoring (Bond et al. 2014; Kim et al. 2014), without intervention, to charact...

Objective: to analyze the reasons for senior schoolchildren’s interest destructive social groups dedicated challenges, criminal culture, weapons, erotic and sex, dangerous leisure, death suicide, mass killings violence, drugs; describe hierarchy of interests life values adolescents based on research results (questionnaire survey schoolchildren multidimensional content analysis VKontakte network...

Gangs can be understood in many ways. John hagedorn (2005) and Sudhir Venkatesh (2003) describe gangs as replacements for mainstream institutions (the state, the family) that find themselves in crisis. others such as luis barrios (2003) and David brotherton (2003) argue that gangs take on aspects of social movements. Finally, many have observed that gangs proliferate and operate within the real...

The paper examines the time-series evidence relating to participation rates in further education in England and Wales, and uses cointegration analysis to identify a long-run statistical relationship in the data consistent with an augmented human-capital model. The recent rapid growth of participation is attributable largely to the improvements in GCSE attainment of the last decade, coupled with...

This article seeks to amplify our scholarly view of immigrant identity by centering the first-person narratives immigrant-origin children and youth. Our theoretical methodological framework centers on testimonio—a narrative practice popularized in Latin American social movements which an individual recounts a lived experience that is intended be representative collective struggle. goal foregrou...

How has the youth climate movement in US grown since Climate Strikes began and what ways did it change as grew? This article takes advantage of a unique dataset that includes surveys from activists who organized nationally coordinated strikes with Fridays for Future spring 2019. Building on research alliance building strategic coalitions, this analyzes how patterns participation changed over pe...

Multidirectional speed (MDS) can be defined as [DOUBLE HIGH-REVERSED-9 QUOTATION MARK]the competency and capacity to accelerate, decelerate, change direction, maintain in multiple directions movements, within the context of sport-specific scenarios.” The components MDS are linear speed, direction curvilinear contextual agility. A development framework is provided for practitioner who considers ...