A comparison of electromyography and stroke kinematics during ergometer and on-water rowing

Abstract

This study assessed muscle recruitment patterns and stroke kinematics during ergometer and on-water rowing to validate the accuracy of rowing ergometry. Male rowers (n = 10; age 21 ± 2 years, height 1.90 ± 0.05 m and body mass 83.3 ± 4.8 kg) performed 3 × 3 min exercise bouts, at heart and stroke rates equivalent to 75, 85 and 95% V?O₂peak, on both dynamic and stationary rowing ergometers, and on water. During exercise, synchronised data for surface electromyography (EMG) and 2D kinematics were recorded. Overall muscle activity was quantified by the integration of rmsEMG and averaged for each 10% interval of the stroke cycle. Muscle activity significantly increased in rectus femoris (RF) and vastus medialis (VM) (P <0.01), as exercise intensity increased. Comparing EMG data across conditions revealed significantly (P <0.05) greater RF and VM activity during on-water rowing at discrete 10% intervals of stroke cycle. In addition, the drive/recovery ratio was significantly lower during dynamic ergometry compared to on-water (40 ± 1 vs. 44 ± 1% at 95%, P <0.01). Results suggest that significant differences exist while comparing recruitment and kinematic patterns between on-water and ergometer rowing. These differences may be due to altered acceleration and deceleration of moving masses on-ergometer not perfectly simulating the on-water scenario.     

The impact of adverse childhood experiences and recent life events on anxiety and quality of life in university students

Higher Education - Adverse childhood experiences (ACEs) have been repeatedly associated with a wide range of physical and mental health issues. Research has indicated high levels of anxiety and...     

An early career academic network: what worked and what didn’t

This article documents the experiences of three early career academics trying to establish a network of early career academics (ECAs) in a middle-ranked university in Australia. The changing context of academia means that ECAs face considerable challenges in understanding and negotiating effective career paths. Some of the issues encountered include insecure employment arrangements; unclear and shifting expectations; heavy workloads and competing demands; and conflicting experiences around the collegiate culture of academia. As research and teaching institutions, universities must ensure the ongoing development of new academics. While there is a growing interest in exploring the issues confronted by new academics, much remains to be done to better understand, and improve, the pathways of academic development. To this end we reflect on our efforts to establish an ECA network that aimed to enhance professional development, facilitate an improved research culture and establish an informal peer support network. We did so through establishing an online presence for sharing information, hosting a series of professional development seminars and hosting a 2.5 day writing retreat. Our experiences suggest that, while efforts to enhance the capacity of ECAs are worthwhile, the very same pressures that our network was attempting to address were simultaneously creating barriers to ECA involvement in the network and its activities.     

High school transition – an intervention that empowers children with special educational needs and improves school practice

This article discusses the process and results of a junior school initiative from a local authority in the East of England, to ensure that vulnerable pupils in the school experience a successful transition to high school. The resulting project is the consequence of an inter‐organisational collaboration between the junior school, a secondary school and the local educational psychology service. The transition intervention, which is the first product of this project, was borne from the ideas of year 7 students with special educational needs, which were analysed and presented visually into a transition booklet, later used in the intervention with year 6 pupils. At the end of the intervention, the year 6 pupils provided feedback, which informed first changes in the intervention. Overall, the intervention was successful and because of the interest drawn, it was decided to extend the initiative to other schools with year 6 pupils.     

In Excess of Epistemology: Siegel,Taylor, Heidegger and the Conditions of Thought

Harvey Siegel's epistemologically‐informed conception of critical thinking is one of the most influential accounts of critical thinking around today. In this article, I seek to open up an account of critical thinking that goes beyond the one defended by Siegel. I do this by re‐reading an opposing view, which Siegel himself rejects as leaving epistemology (and, by implication, his epistemological account of critical thinking) ‘pretty much as it is’. This is the view proposed by Charles Taylor in his paper ‘Overcoming Epistemology’. Crucially, my aim here is not to defend Taylor's challenge to epistemology per se, but rather to demonstrate how, through its appeal to certain key tropes within Heideggerian philosophy, Taylor's paper opens us towards a radically different conception of thinking and the human being who thinks. Indeed, as will be argued, it is through this that Taylor and Heidegger come to offer us the resources for re‐thinking the nature of critical thinking—in a way that exceeds the epistemological, and does more justice to receptive and responsible conditions of human thought.     

Using behaviour contracts to decrease antisocial behaviour in four boys with an autistic spectrum disorder at home and at school

This article describes how a behaviour contract has been implemented to achieve positive and enduring results for four boys with a diagnosis of an autistic spectrum disorder (ASD). Four case studies are described which address reductions in behaviours such as assaultive and destructive behaviour, out‐of‐seat behaviour, inappropriate contact with others and loud vocalisations, while also increasing the following of directions in the classroom and at playtimes. The common thread across all of the case studies is the use of the behaviour contract and the link that is built between home and school. The authors suggest that it is this contingent link that is the basis for the success in each of these studies. Based on their research, they believe that the behaviour contract can be considered an important and useful tool in helping address challenging behaviours in children with an ASD. Emma Hawkins is the Director of Education at The Jigsaw CABAS® School and oversees the implementation of strategies at the school to improve the behaviour of the pupils. Grant Gautreaux, from Nicholls State University in Louisiana, consults at The Jigsaw CABAS® School and is a member of the CABAS® Board. All of the remaining authors work at The Jigsaw CABAS® School and have successfully implemented the behaviour contract in their classrooms.     

Using method of instruction to predict the skills supporting initial reading development: insight from a synthetic phonics approach

This study examined the skills predicting early reading development when children were taught by a synthetic phonics approach. Eighty five children taught to read by systematic synthetic phonics were assessed on reading and cognitive assessments prior to reading instruction (average age 4 years, 7 months), 6 months later (5 years, 1 month), and 73 were also tested 1 year later (6 years, 1 month). Consistent with hypotheses, word reading was most strongly and consistently predicted by letter sound knowledge and short term memory. It is proposed that method of instruction may shape the skills children draw upon when learning to read.     

Unpacking (white) privilege in a South African university classroom: A neglected element in multicultural educational contexts

Multiculturalism currently aims for the political accommodation of difference instead of the subversion of the resulting privileges of difference. In the South African context such a distinction is especially important since the economic and symbolic subjugation of the majority of Black South Africans continues despite political transformation, and is exacerbated by an unwillingness to reflect on privilege and inequality. Drawing on Biko and Soudien’s critique of multiculturalism and vision for anti-racist education, this paper describes a classroom activity set for 164 nationally and culturally diverse second year sociology students at a university in Cape Town, South Africa. The activity tasked students to reflect on texts by Peggy McIntosh and Khaya Dlanga (one canonical, the other contextual) and reports on these students’ nuanced understandings of personal biography, experiences of privilege and self-reflexivity that connects personal experience to social structure and historical contexts. It concludes by offering modest implications for moral education in a multicultural university classroom.     

Out of the Ordinary: incorporating limits with Austin and Derrida

This article seeks to open up a re-examination of the relationship between thought and language by reference to two philosophers: John Austin and Jacques Derrida. While in traditional philosophical terms these thinkers stand far apart, recent work in the philosophy of education has highlighted the importance of Austin’s work in a way that has begun to bridge the philosophical divide. This article seeks to continue the renewed interest in Austin in educational research, yet also take it in new direction by exploring Austin’s wider philosophical concern within the William James Lectures with the nature of language. The significance of the philosophical turn to language has entered the agenda of a number of philosophers of education in recent years. The main aim of this article will be to present, as a starting point for further work, an account of language that does justice to the way language actually operates. The article will argue that Austin’s account of the performative opens up new possibilities in this regard and yet—for reasons that will be made clear—also fails in the final instance to carry these through. By illustrating the way Derrida’s philosophy works, contrastingly, to take these possibilities to their full conclusion, I will argue that Derrida succeeds in bringing a radically new conception of language to the fore. The article will end by pointing towards some of the implications of the initial exploration conducted here to be developed elsewhere—particularly for the ways we think about thinking.