Repeated exercise stress impairs volitional but not magnetically evoked electromechanical delay of the knee flexors

The effects of serial episodes of fatigue and recovery on volitional and magnetically evoked neuromuscular performance of the knee flexors were assessed in 20 female soccer players during: (i) an intervention comprising 4 × 35 s maximal static exercise, and (ii) a control condition. Volitional peak force was impaired progressively (-16% vs. baseline: 235.3 ± 54.7 to 198.1 ± 38.5 N) by the fatiguing exercise and recovered to within -97% of baseline values following 6 min of rest. Evoked peak twitch force was diminished subsequent to the fourth episode of exercise (23.3%: 21.4 ± 13.8 vs. 16.4 ± 14.6 N) and remained impaired at this level throughout the recovery. Impairment of volitional electromechanical delay performance following the first episode of exercise (25.5%: 55.3 ± 11.9 vs. 69.5 ± 24.5 ms) contrasted with concurrent improvement (10.0%: 24.5 ± 4.7 vs. 22.1 ± 5.0 ms) in evoked electromechanical delay (P < 0.05), and this increased disparity between evoked and volitional electromechanical delay remained during subsequent periods of intervention and recovery. The fatiguing exercise provoked substantial impairments to volitional strength and volitional electromechanical delay that showed differential patterns of recovery. However, improved evoked electromechanical delay performance might identify a dormant capability for optimal muscle responses during acute stressful exercise and an improved capacity to maintain dynamic joint stability during critical episodes of loading.     

Developmental trajectories of personal and collective self-concept among American Indian adolescents

Developmental trajectories of personal and collective self-concept were examined among American Indian adolescents. Personal self-concept (self-esteem) and collective self-concept (American Indian identity, Euro-American identity, community-mindedness) were assessed 6 times over 3 years in 4 cohorts of adolescents from 3 American Indian cultural groups (N=1,252). An accelerated longitudinal design was used to estimate developmental trajectories from 14 to 19 years; parallel-process and covariate models were used to examine variation in trajectories. Both personal and collective self-concepts were generally positive and showed small gains; they were moderately related to one another and differentially related to cultural group, gender, and perceived social support. The findings highlight the complexity of self-concept for American Indian youth and the significance of both personal and collective identity.     

Qualitative differences in the exploration of upright and upside-down faces in four-month-old infants: an eye-movement study

Four-month-old infants were habituated with an upright or an upside-down face. Eye-movement recordings showed that the upright and upside-down faces were not explored the same way. Infants spent more time exploring internal features, mainly in the region of the nose and mouth, when the face was upright. They also alternated as frequently between the face's internal features (eyes vs. nose/mouth) as between external and internal features. When the face was upside down, the infants spent half of their time exploring external features, and preferentially alternated between external features and internal features. The main effect of inversion was a decrease of the looking time to the nose/mouth region and of the number of shifts between the eye region and the nose/mouth region.     

Towards a Definition of Community Education

Community work in the UK has developed in a haphazard way and would appear to have two major roots which have influenced its development and application. In one direction community work has grown out of education and in the other direction out of social work, and it would seem that much of community work in this country can be viewed and evaluated as having objectives which are either educationally or socially remedial. In recent years, the term ‘community work’ has come to be related much more clearly to socially remedial work rather than to educationally remedial work. The term ‘community education’ has tended to be applied much more to the changing and developing role of the secondary school within the community and the establishment of the concept of the community school or community college.     

Teaching as Theater

As new media proliferate, professors need to be particularly attentive to the ways by which students learn—in and out of the classroom—and how scarce classroom time can be organized. This article argues that professors' comparative advantage lies as an exemplar of discipline‐based thinking. Effective training in how to think about problems (the essence of any discipline) demands that professors embrace the classroom as theater, where business drama and the story it tells can capture the hearts and minds of the student participants. The article talks through a case as theater.     

TRENDS RESHAPING COLLEGES

The annual Community College Futures Assembly is usually a trend-setting experience and this year was no exception. This special issue highlights lessons learned from the institutions who competitively presented and broke new ground at the 2002 Assembly. The theme, Trends in the New Economy , was evident in each presentation and the vehicle of web-casting demonstrated how the community college could be reshaped by technology. Attendees were introduced to the ideas reshaping the new economy by the keynote speaker Britt Beemer and the Bellwether Finalists presented viable examples of college adaptation to these reshaping trends. Important pre-assembly workshops introduced innovative concepts relating to the future of community colleges, including access to baccalaureate degrees. The stimulating presentations, enthusiastic camaraderie, and great meals set the stage for all attendees to take home trend-setting information to their institutions and communities. This introduction focuses on the experience of attending the 2002 Community College Futures Assembly. Approximately 200 community college trustees, presidents, vice-presidents, deans, faculty members, and other decision makers representing 25 states attended the Assembly which was held in Orlando, Florida. The Assembly is sponsored annually by the Institute of Higher Education (IHE), University of Florida (UF) and cosponsored this year by Dell Computers, Saville & Holdsworth, and the numerous organizations identified in this introduction. The assembly has provided quality learning experiences since 1995 and is proud to be an independent national policy forum recognized by the Association of Community College Trustees for its Trustee Education Recognition Program.     

Preparation never ends: Sustaining a mentorship model in early childhood teacher education

Abstract

This paper documents the development of a mentorship project for both inservice and preservice early childhood teachers. This mentorship model was conceived by university faculty who were concerned that developmentally appropriate practice was fast becoming a casualty of the present accountability reform in education, and distressed by the disconnect between the university and the prek‐grade three classroom. The first two years of the model are described with particular emphasis placed on the second year efforts to increase the interaction of preservice and inservice teachers. Central to these efforts has been the two‐way communication resulting from video mentorship, and this paper documents the reactions of the stakeholders to this initiative. The paper closes by discussing the challenges that lie ahead as the mentorship model continues to evolve.