Irvine A.,Waikato Institute of Technology
European Journal of Applied Physiology | Year: 2010
This investigation reports the effects of caffeinated chewing gum on fatigue and hormone response during repeated sprint performance with competitive cyclists. Nine male cyclists (mean ± SD, age 24 ± 7 years, VO 2max 62.5 ± 5.4 mL kg -1 min -1) completed four high-intensity experimental sessions, consisting of four sets of 30 s sprints (5 sprints each set). Caffeine (240 mg) or placebo was administered via chewing gum following the second set of each experimental session. Testosterone and cortisol concentrations were assayed in saliva samples collected at rest and after each set of sprints. Mean power output in the first 10 sprints relative to the last 10 sprints declined by 5.8 ± 4.0% in the placebo and 0.4 ± 7.7% in the caffeine trials, respectively. The reduced fatigue in the caffeine trials equated to a 5.4% (90% confidence limit ±3.6%, effect size 0.25; ±0.16) performance enhancement in favour of caffeine. Salivary testosterone increased rapidly from rest (~53%) and prior to treatments in all trials. Following caffeine treatment, testosterone increased by a further 12 ± 14% (ES 0.50; ± 0.56) relative to the placebo condition. In contrast, cortisol concentrations were not elevated until after the third exercise set; following the caffeine treatment cortisol was reduced by 21 ± 31% (ES-0.30; ± 0.34) relative to placebo. The acute ingestion of caffeine via chewing gum attenuated fatigue during repeated, high-intensity sprint exercise in competitive cyclists. Furthermore, the delayed fatigue was associated with substantially elevated testosterone concentrations and decreased cortisol in the caffeine trials. © 2010 Springer-Verlag.
News Article | October 26, 2016
The International Nurses Association is pleased to welcome Elizabeth Norah Tamepo, RM, to their prestigious organization with her upcoming publication in the Worldwide Leaders in Healthcare. Elizabeth Norah Tamepo is a Registered Midwife working within her own private practice in Ngati Porou Te Tairawhiti, New Zealand. With over 20 years of experience, she is a specialist midwife and provides midwifery care to her clients who live in very isolated areas of Ngati Porou. Elizabeth Norah Tamepo gained her Bachelor in Midwifery degree from the Waikato Institute of Technology (also known as Wintec) in Hamilton, New Zealand. Since then, Elizabeth has practiced as a Registered Midwife and consolidated her skills and knowledge. Elizabeth has a wealth of experience in providing a comprehensive range of midwifery services to patients in the Tairawhiti Region. She maintains a professional membership with the New Zealand College of Midwives and the Midwifery Council of New Zealand, and enjoys reading the Journal of the New Zealand College of Midwives. When she is not working, Elizabeth enjoys being with her family/whanau, baking, gardening and fishing. Learn more Elizabeth Norah Tamepo here: http://inanurse.org/network/index.php?do=/4133245/info/ and read her upcoming publication in Worldwide Leaders in Healthcare.
Roodt H.,Waikato Institute of Technology
9th Annual IEEE International Systems Conference, SysCon 2015 - Proceedings | Year: 2015
Farming procedures have intensified to the point where they significantly impact on the environment, the social fabric of the communities involved and the political and financial stability of regions. Traditional design procedures do not take the recursive and adaptive nature of these systems fully into account. The author starts from the premise that the feedback loop and recursive causal nature inherent to agri-eco-socio-technical systems make them inherently wicked1. The design of a low carbon footprint farm takes this into account and uses a transdisciplinary approach to consider the solutions from a broad stakeholder group. An initial solution design is presented that shows how the problem was structured and what factors were considered for a model based approach. © 2015 IEEE.
Bond H.,Waikato Institute of Technology |
Morton L.,Waikato Institute of Technology |
Braakhuis A.J.,Waikato Institute of Technology
International Journal of Sport Nutrition and Exercise Metabolism | Year: 2012
Increased plasma nitrate concentrations from dietary sources of nitrate have proven to benefit exercise performance. Beetroot (BR) contains relatively high levels of nitrate (NO3-), which increases nitric oxide stores. This study investigated whether dietary nitrate supplementation, in the form of a BR beverage, would improve rowing performance during ergometer repetitions. In a randomized crossover design, 14 well-trained junior male rowers consumed 500 ml of either BR or placebo (PL) daily for 6 d. After supplementation, rowers completed 6 maximal 500-m ergometer repetitions and times were recorded. A 7-d washout period separated the 2 trials. Blood pressure, oxygen saturation, maximum heart rate, urine (specific gravity, pH, and nitrites), and lactates were collected for analysis at baseline and pre- and postperformance. Changes in the mean with 95% confidence limits were calculated. There was a likely benefit to average repetition time in the BR condition, compared with PL (0.4%, 95% confidence limits, ± 1.0%). In particular, Repetitions 4-6 showed an almost certain benefit in rowing time on BR (1.7%, 95% CL, ± 1.0%). The underlying mechanism for the observed results remains unknown, as differences observed in rowers' physiological measures between the 2 conditions were unclear. Conclusively, nitrate supplementation in the form of BR juice resulted in improved maximal rowing-ergometer repetitions, particularly in the later stages of exercise. © 2012 Human Kinetics, Inc.
Clayton J.,Waikato Institute of Technology
Research in Learning Technology | Year: 2012
Education has long been regarded as the foundation stone of national growth and international competitiveness. In the last three decades national educational reforms to improve access to higher education qualifications, individual higher education institutions' aggressive national and international marketing initiatives and improved information and communication technology (ICT) systems and infrastructure have resulted in greatly increased participation in tertiary education. As a consequence of this wider participation, tertiary educators are now engaging with increased numbers of culturally and economically diverse learners in distributed ICT environments that they, the educators and learners, are often unfamiliar with. There is an expectation that these educators will be able to design learning modules to meet students' multi-cultural needs, in a range of contexts, with no additional resources. In essence, it is expected that learners will participate in individually customised learning events at a cost similar to traditional delivery. This requires a fundamental shift in educators and learners conceptions on the provision of education. The purpose of this paper is to explore how the development and deployment of reflective frameworks, based on recognised international standards, can fully engage learners in mass-customised environments. First this article outlines the key building blocks required for reflective mass-customisation to occur. Second, it illustrates how this concept is being tentatively explored at a New Zealand institution. Finally, it recommends the areas of action for further research on the impact and effect of masscustomisation on learners, educators and institutions to be undertaken. © J. Clayton.
Ryan J.,Waikato Institute of Technology
Journal of Pragmatics | Year: 2016
While referent tracking is considered highly problematic, researchers have generally concluded that adult second language learners face few problems with referent introductions. However, previous studies have typically blurred the distinction between recognitional and non-recognitional introductions and have largely focused on the noun phrase as the primary unit of analysis, overlooking the complex multi-stage and interactional practices used to refer to entities with low accessibility. The present study addresses these issues in the analysis of references by native and non-native speakers in a film retelling task, and additionally explores the interlocutors' interpretations of references through stimulated recall interviews, thereby identifying which introductions were miscommunicated. The findings suggest that, even for relatively competent second language speakers, introductions pose a substantially greater communicative and acquisitional challenge than has been previously reported, with evidence presented of miscommunications triggered by under-explicitness. The findings highlight theoretical issues in interlanguage pragmatics and the methodological value of analysing interpretations of learner speech; pedagogically, the findings suggest a need for addressing the complex move structure and interactional practices for achieving recognition. © 2016 Elsevier B.V.
Puddle D.L.,Waikato Institute of Technology |
Maulder P.S.,Waikato Institute of Technology
Journal of Sports Science and Medicine | Year: 2013
Due to the relative infancy of Parkour there is currently a lack of empirical evidence on which to base specific technique instruction upon. The purpose of this study was to compare the ground reaction forces and loading rates involved in two Parkour landing techniques encouraged by local Parkour instructors and a traditional landing technique recommended in the literature. Ten male participants performed three different drop landing techniques (Parkour precision, Parkour roll, and traditional) onto a force plate. Compared to the traditional technique the Parkour precision technique demonstrated significantly less maximal vertical landing force (38%, p < 0.01, ES = 1.76) and landing loading rate (54%, p < 0.01, ES = 1.22). Similarly, less maximal vertical landing force (43%, p < 0.01, ES = 2.04) and landing loading rate (63%, p < 0.01, ES = 1.54) were observed in the Parkour roll technique compared to the traditional technique. It is unclear whether or not the Parkour precision technique produced lower landing forces and loading rates than the Parkour roll technique as no significant differences were found. The landing techniques encouraged by local Parkour instructors such as the precision and roll appear to be more appropriate for Parkour practitioners to perform than a traditional landing technique due to the lower landing forces and loading rates experienced. © Journal of Sports Science and Medicine.
Gheitasi A.,Waikato Institute of Technology
Asia-Pacific Power and Energy Engineering Conference, APPEEC | Year: 2015
This paper investigates the ability of impedance based fault locating systems in series compensated lines. Behaviour of Series capacitors and their built-in protection system has been studied to analyse the dynamics of the system during short circuit faults. This paper also aims at investigating attempt to provide a framework to facilitate a reliable decision making in the real time situation by amending conventional fault locating algorithms. The algorithm is simulated using MATLAB Simiilink for a 220kV transmission line. © 2015 IEEE.
Gedera D.S.P.,Waikato Institute of Technology
Proceedings of ASCILITE 2014 - Annual Conference of the Australian Society for Computers in Tertiary Education | Year: 2014
Integration of educational technologies in teaching and learning has changed the nature of face-toface learning. Educational technologies that include LMSs generally offer powerful tools that can be used in enhancing teaching and learning experiences. However, it is not clear to what extent LMSs affect learner engagement in universities. With this focus, this article aims to explore the factors that affected students' engagement with e-learning activities facilitated by Moodle in a blended learning course in a university in New Zealand. With Activity Theory as its research framework, the research methods of this study include individual interviews, online and face-toface observation of activities and analysis of other relevant documents. This article includes some of the findings of the research and a discussion on how the university learning management systemâ€" Moodle and other tools affected students' active participation in learning activities in this course. The article also offers some pedagogical strategies that can be of use to teachers and instructional designers when designing online courses.
Flynn C.,Waikato Institute of Technology |
Rubin M.B.,Technion - Israel Institute of Technology
Mechanics of Materials | Year: 2014
Nonlinear three-dimensional constitutive equations are developed for analyzing inelastic effects that cause dissipation in biological tissues. The model combines a structural icosahedral model of six discrete fiber bundles with a phenomenological model of the inelastic distortional deformations of the matrix containing the fibers. The inelastic response of the matrix is characterized by only three material parameters, which can be used to model both rate-independent and rate-dependent response with a smooth elastic-inelastic transition. Also, a robust, strongly objective scheme is discussed, which allows the model to be easily implemented into finite element computer codes. Examples show that the model predictions compare well with experimental data for the nonlinear, anisotropic, inelastic response of a number of tissues. Specifically, the model simulated the biaxial stretching of rabbit skin with an error of 15.7%, stress relaxation of rabbit skin with an error of 17.2%, simple shear of rat septal myocardium with an error of 21.6%, and uniaxial stress in compression of monkey liver with an error of 8.3%. © 2013 Elsevier Ltd. All rights reserved.