The effects of barbell load on countermovement vertical jump power and net impulse

The aim of this study was to examine the effects of barbell load on countermovement vertical jump (CMJ) power and net impulse within a theoretically valid framework, cognisant of the underpinning force, temporal, and spatial components. A total of 24 resistance-trained rugby union athletes (average ± SD: age: 23.1 ± 3.4 years; height: 1.83 ± 0.05 m; body mass (BM): 91.3 ± 10.5 kg) performed maximal CMJ under 5 experimental conditions in a randomised, counterbalanced order: unloaded, and with additional loads of 25%, 50%, 75%, and 100% of BM. Peak power and average power were maximised during the unloaded condition, both decreasing significantly (P < 0.05) as load increased. Net impulse was maximised with 75% of BM, which was significantly greater (P < 0.05) than the unloaded and 100% of BM conditions. Net mean force and mean velocity were maximised during the unloaded condition and decreased significantly (P < 0.05) as load increased, whereas phase duration increased significantly (P < 0.05) as load increased. As such, the interaction between barbell load and the underpinning force, time, and displacement components should be considered by strength and conditioning coaches when prescribing barbell loads.     

The perceptual gaps in using a learning management system: Indigenous cultural perspectives

ABSTRACT

Learning management systems (LMS) have been utilised for enhancing the quality of learning and teaching in higher education, yet the cultural needs of Indigenous students are rarely considered. The study reimagines culturally inclusive learning in an LMS by critically reviewing theories of culturally inclusive learning and Indigenous pedagogical values. It explores perceptual gaps between Indigenous cultural needs and the current use of an LMS through analysis of data collected from Indigenous students and academic staff via an online questionnaire (n = 100) and face-to-face interviews (n = 20) at one Australian university. As a result, it articulates and unpacks mythical perceptions of using an LMS. Consequently, there is clear evidence that Indigenous students expect to experience more human-to-human interactions and develop a sense of community through the use of available communication tools, whereas academic staff tend to rely on a binary opposition between pedagogy and culture in which culture is regarded as a subordinate concept to pedagogy.     

Inequity in the Performance Evaluation Process: How You Rate Me Affects How I Rate You

The current study examined issues of leniency in the ratings provided by students for their instructors. Based on equity theory from the psychological literature, we proposed that individuals would consider the evaluations that they expect to receive in concurrent classes when evaluating the effectiveness of a given instructor. Our results suggest that individuals may form a mental comparison between how they expect to be graded in a given class with how they have been rated or expect to be rated in other classes. This comparison then leaves the individual either satisfied or dissatisfied, thus influencing the ratings that they provide for their superiors. Limitations of the current results are discussed, and recommendations for future research are advanced.     

Using Space Imagery in the Science Classroom: Efforts of the CASDE Project

This article describes the ongoing curriculum development efforts of the Consortium for the Application of Space Data in Education (CASDE), which is an evolving consortium of educators, engineers, scientists, and other professionals dedicated to providing the educational community with vast amounts of NASA imagery, tools, and interdisciplinary learning activities, distributed freely over the Internet. The article particularly details the curricular approach taken by CASDE, which involves the concept of curriculum building blocks that contain tools, data, tutorials, curriculum standards, assessments, and a sample lesson or instructional activity. The article also describes the student interactive DataSlate software, developed by engineers at the Jet Propulsion Laboratory, to help teachers use space imagery conveniently with students in the science classroom. In addition, the article discusses the consortium's approach to providing ongoing training to teachers, and also describes the efforts of the consortium to evaluate some of the educational activities undertaken by participating teachers. Finally, a web-based link to all of the consortium's resources and curriculum activities is provided to the reader for their possible use and reference.     

The Politically and Culturally One-Sided Campus: Causes, Consequences, Remedies: Pernicious Politicization in Academe: Victims of the One-Sided Campus: Advocacy in the College Classroom

The three papers that follow were delivered on 22 April 2006 at a conference of the California Association of Scholars at the Annenberg School on the campus of the University of Southern California in Los Angeles. The aim of the panelists was to diagnose the political and cultural imbalance in higher education, to analyze its causes and consequences, and to look for remedies. Other essays from that conference may appear later in AQ.