Outcomes of an Integrated Approach to Speed and Strength Training with an Elite-Level Sprinter

The purpose of this study was to observe changes in sprint velocity, ground contact time, and peak force demonstrated by a competitive sprinter following an integrated approach to speed development and strength training. As part of an ongoing monitoring procedure the participant completed 20m sprint testing through an optical measurement system and isometric-strength testing before and after each phase of training. Sprint velocity, ground contact time and peak force were analysed using Tau-U, smallest worthwhile and percent change statistics. Results indicate sprinting velocity statistically improved while changes in peak force were practically significant and ground contact time remained trivial throughout the investigation. Results lead investigators to suggest the implementation of a periodized approach merging technical skill and the development of physical abilities. The integrated approach provided a transfer of training effect and may have been the primary source of sprint enrichment

A framework for quantitative analysis of user-generated spatial data

This paper proposes a new framework for automated analysis of game-play metrics for aiding game designers in finding out the critical aspects of the game caused by factors like design modications, change in playing style, etc. The core of the algorithm measures similarity between spatial distribution of user generated in-game events and automatically ranks them in order of importance. The feasibility of the method is demonstrated on a data set collected from a modern, multiplayer First Person Shooter, together with application examples of its use. The proposed framework can be used to accompany traditional testing tools and make the game design process more efficient

The means of (re-)production: expertise, open tools, standards and communication

This article examines the current difficulties faced in penetrating the world of scholarly communication technology. While there have been large strides forward in the disintermediation of digital publishing expertise – most notably by the Public Knowledge Project – a substantial number of barriers remain. This paper examines a case study in terms of scholarly typesetting and the JATS standard before moving to suggest three potential solutions: 1.) The formation of open, non-commercial and inclusive (but structured) organizations dedicated to the group exploration and standardisation of scholarly publishing technology; 2.) The collective authoring of as much technological and process documentation on scholarly publishing as is possible; 3.) The modularisation of platforms and agreement on standards of interoperability. Only through such measures is it possible for researchers to reclaim the means of (re)production, for the remaining barriers are not difficult to understand, merely hard to discover

Maximal aerobic speed as a useful tool to understand specific training demand among elite male volleyball

Lakhdar Louglaib, Zerf Mohammed. Maximal aerobic speed as a useful tool to understand specific training demand among elite male volleyball. Pedagogy and Psychology of Sport. 2019;5(1):96-107. elSSN 2450-6605. DOI http://dx.doi.org/10.12775/19324 http://apcz.umk.pl/czasopisma/index.php/PPS/article/view/19324 https://pbn.nauka.gov.pl/sedno-webapp/works/903078 The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. Part B (26/01/2017). © The Authors 2019; This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike. (http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received: 18.01.2019. Revised: 30.01.2019. Accepted: 06.02.2019. MAXIMAL AEROBIC SPEED AS A USEFUL TOOL TO UNDERSTAND SPECIFIC TRAINING DEMAND AMONG ELITE MALE VOLLEYBALL Louglaib Lakhdar 1, Mohammed Zerf 2* 1, 2, Physical Education Institute, University of Abdel Hamid Ibn Badis Mostaganem, Algeria ABSTRACT Aim: The study aims to study the impact of Maximal Aerobic Speed (MAS) levels on the growth of skills fitness among volleyball. Methods: To achieve this objective, we assess the levels of MAS for 60 elite male volleyball players (ages 22 to 25 years with +5 years' experience in elite championships). Tested by volleyball Alberta tests and standing triple jump and T agility tests to estimate the effect of coordination abilities on players body adaptations to recover from the high-intensity and fatiguing actions as a result of levels of endurance. Results: Backup on statistics applied, centred on MAS levels as protocol. We confirmed that a high-level of MAS enhanced skills fitness. Admitted by the inverse correlation between the levels of MAS in compares with speed, power and explosive abilities. In the benefits of players with elevated levels of MAS as a beneficial condition to improve skills fitness (Serve-attack/Spike/Block) among volleyball players. Conclusion: our protocol supports the development of MAS at 4 + (m/s). Agreed as minimal components of physical condition allied to neuromuscular system adaptations, which permit players not only to improve their speed and power components. But also, their ability to recover from high-intensity and fatiguing actions. Keywords: maximal aerobic speed, volleyball, elite, skill physically ability, correlatio

An insight into the use & assessment of lower-limb running prostheses in sport with a disability: a mixed method approach

In able-bodied sport, controversy has occasionally been caused through the adoption or introduction of sports technology. However, scant attention has specifically been paid to sport with a disability with respect to such concerns. This article therefore investigates the use of lower limb running prostheses (LLRPs) in competition by below-knee amputees. This study uses a four-phase mixed method approach to investigate the nature, use and assessment of LLRPs. The first phase conducted a statistical analysis of the sports time series data to ascertain the progression of the sport when considering the impact of sports technology. The second phase performed a stakeholder assessment of the sport using the Delphi method and provided a proposed series of guidelines for lower limb prostheses technology inclusion. The third phase assessed the behaviour of LLRPs in a competitive environment. Ultimately, the three previous phases provided information that led to the fourth phase. This phase investigated the use of a dynamic drop jump technique as an assessment strategy for further development in the future. This information would prove of intrinsic value when developing sports policy in the future

Innovation in services: corporate culture and investment banking

The article discusses service innovation in the investment banking industry. Service industry innovations differ from innovations in industries that produce physical products because they rarely have intellectual property and patent protections. However, investment banking services are typically a series of interrelated businesses such as consulting, wealth management and accounting, and innovations require a business wide coordinated approach. The authors argue that a strong corporate culture can support rather than hinder innovation. The creation of such a culture requires strong leadership and an emphasis on innovation in hiring and promotions

Contribution of anaerobic energy expenditure to whole body thermogenesis

Heat production serves as the standard measurement for the determination of energy expenditure and efficiency in animals. Estimations of metabolic heat production have traditionally focused on gas exchange (oxygen uptake and carbon dioxide production) although direct heat measurements may include an anaerobic component particularly when carbohydrate is oxidized. Stoichiometric interpretations of the ratio of carbon dioxide production to oxygen uptake suggest that both anaerobic and aerobic heat production and, by inference, all energy expenditure – can be accounted for with a measurement of oxygen uptake as 21.1 kJ per liter of oxygen. This manuscript incorporates contemporary bioenergetic interpretations of anaerobic and aerobic ATP turnover to promote the independence of these disparate types of metabolic energy transfer: each has different reactants and products, uses dissimilar enzymes, involves different types of biochemical reactions, takes place in separate cellular compartments, exploits different types of gradients and ultimately each operates with distinct efficiency. The 21.1 kJ per liter of oxygen for carbohydrate oxidation includes a small anaerobic heat component as part of anaerobic energy transfer. Faster rates of ATP turnover that exceed mitochondrial respiration and that are supported by rapid glycolytic phosphorylation with lactate production result in heat production that is independent of oxygen uptake. Simultaneous direct and indirect calorimetry has revealed that this anaerobic heat does not disappear when lactate is later oxidized and so oxygen uptake does not adequately measure anaerobic efficiency or energy expenditure (as was suggested by the "oxygen debt" hypothesis). An estimate of anaerobic energy transfer supplements the measurement of oxygen uptake and may improve the interpretation of whole-body energy expenditure