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https://www.readbyqxmd.com/read/29621279/assessing-worst-case-scenarios-in-movement-demands-derived-from-global-positioning-systems-during-international-rugby-union-matches-rolling-averages-versus-fixed-length-epochs
#1
Daniel J Cunningham, David A Shearer, Neil Carter, Scott Drawer, Ben Pollard, Mark Bennett, Robin Eager, Christian J Cook, John Farrell, Mark Russell, Liam P Kilduff
The assessment of competitive movement demands in team sports has traditionally relied upon global positioning system (GPS) analyses presented as fixed-time epochs (e.g., 5-40 min). More recently, presenting game data as a rolling average has become prevalent due to concerns over a loss of sampling resolution associated with the windowing of data over fixed periods. Accordingly, this study compared rolling average (ROLL) and fixed-time (FIXED) epochs for quantifying the peak movement demands of international rugby union match-play as a function of playing position...
2018: PloS One
https://www.readbyqxmd.com/read/29566665/development-of-a-measurement-approach-to-assess-time-children-participate-in-organized-sport-active-travel-outdoor-active-play-and-curriculum-based-physical-activity
#2
Michael M Borghese, Ian Janssen
BACKGROUND: Children participate in four main types of physical activity: organized sport, active travel, outdoor active play, and curriculum-based physical activity. The objective of this study was to develop a valid approach that can be used to concurrently measure time spent in each of these types of physical activity. METHODS: Two samples (sample 1: n = 50; sample 2: n = 83) of children aged 10-13 wore an accelerometer and a GPS watch continuously over 7 days...
March 22, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29559318/the-ball-in-play-demands-of-international-rugby-union
#3
Benjamin T Pollard, Anthony N Turner, Robin Eager, Daniel J Cunningham, Christian J Cook, Patrick Hogben, Liam P Kilduff
OBJECTIVES: Rugby union is a high intensity intermittent sport, typically analysed via set time periods or rolling average methods. This study reports the demands of international rugby union via global positioning system (GPS) metrics expressed as mean ball in play (BiP), maximum BiP (max BiP), and whole match outputs. DESIGN: Single cohort cross sectional study involving 22 international players, categorised as forwards and backs. METHODS: A total of 88 GPS files from eight international test matches were collected during 2016...
March 3, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29533361/an-investigation-in-to-the-positional-running-demands-of-elite-gaelic-football-players-how-competition-data-can-inform-training-practice
#4
Jason McGahan, Con Burns, Seán Lacey, Tim Gabbett, Cian O' Neill
PURPOSE: This study investigated the positional running demands of elite Gaelic football players during match-play and compared these demands with typical training activities used to prepare players for competition. METHODS: Global positioning system (GPS) data was obtained from thirty elite Gaelic football players (26.9 ± 3.5 years, 182.8 ± 6.1 cm, 84.6 ± 8.1 kg) across a full season (13 competitive games and 78 training sessions). Only players who completed the full match and respective training sessions were included (n = 107 match files and n = 1,603 training files)...
March 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29466098/comparing-global-positioning-system-gps-and-global-navigation-satellite-system-gnss-measures-of-team-sport-movements
#5
Benjamin M Jackson, Ted Polglaze, Brian Dawson, Trish King, Peter Peeling
PURPOSE: To compare data from conventional GPS and new GNSS-enabled tracking devices, and to examine the inter-unit reliability of GNSS devices. METHODS: Inter-device differences between 10 Hz GPS and GNSS devices were examined during laps (n=40) of a simulated game circuit (SGC) and during elite hockey matches (n=21); GNSS inter-unit reliability was also examined during the SGC laps. Differences in distance values and measures in three velocity categories (low <3 m...
February 21, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29426309/neighborhood-based-pa-and-its-environmental-correlates-a-gis-and-gps-based-cross-sectional-study-in-the-netherlands
#6
Marijke Jansen, Carlijn B M Kamphuis, Frank H Pierik, Dick F Ettema, Martin J Dijst
BACKGROUND: To improve our understanding of the neighborhood environment - physical activity (PA) relationship, it is of importance to assess associations between neighborhood environmental characteristics and neighborhood-based PA. METHODS: Participants' (N = 308; 45-65 years) light PA (LPA) and moderate-vigorous PA (MVPA) within a 400, 800, and 1600 m buffer around adults' homes was measured using accelerometers and GPS-devices. Land use data in ArcGIS provided neighborhood characteristics for the same buffers...
February 9, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29420620/validity-and-reliability-of-gps-and-lps-for-measuring-distances-covered-and-sprint-mechanical-properties-in-team-sports
#7
Matthias W Hoppe, Christian Baumgart, Ted Polglaze, Jürgen Freiwald
This study aimed to investigate the validity and reliability of global (GPS) and local (LPS) positioning systems for measuring distances covered and sprint mechanical properties in team sports. Here, we evaluated two recently released 18 Hz GPS and 20 Hz LPS technologies together with one established 10 Hz GPS technology. Six male athletes (age: 27±2 years; VO2max: 48.8±4.7 ml/min/kg) performed outdoors on 10 trials of a team sport-specific circuit that was equipped with double-light timing gates. The circuit included various walking, jogging, and sprinting sections that were performed either in straight-lines or with changes of direction...
2018: PloS One
https://www.readbyqxmd.com/read/29385963/accuracy-intra-and-inter-unit-reliability-and-comparison-between-gps-and-uwb-based-position-tracking-systems-used-for-time-motion-analyses-in-soccer
#8
Alejandro Bastida Castillo, Carlos D Gómez Carmona, Ernesto De la Cruz Sánchez, José Pino Ortega
There is interest in the accuracy and inter-unit reliability of position-tracking systems to monitor players. Research into this technology, although relatively recent, has grown exponentially in the last years, and it is difficult to find professional team sport that does not use Global Positioning System (GPS) technology at least. The aim of this study is to know the accuracy of both GPS-based and Ultra Wide Band (UWB)-based systems on a soccer field and their inter- and intra-unit reliability. A secondary aim is to compare them for practical applications in sport science...
January 31, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29373435/match-play-running-demands-and-technical-performance-among-elite-gaelic-footballers-does-divisional-status-count
#9
Jason H McGahan, Shane Mangan, Kieran Collins, Con Burns, Tim Gabbett, Cian O' Neill
The aim of the current study was to compare positional differences in running demands and technical performance variables among elite Gaelic football teams from separate Divisions. Data were obtained from a Division 1 (26.7 ± 2.9 years, 179.2 ± 21.3 cm, 89.9 ± 21.2 kg) and a Division 3 (25.7 ± 3.5 years, 183.0 ± 4.7 cm, 84.4 ± 6.5 kg) team. Match-play running variables were collected using 4-Hz global positioning system (GPS) units (VX Sport, New-Zealand) (Match data sets; Division 1: n = 107, Division 3: n = 97)...
January 24, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29357871/factors-related-with-public-open-space-use-among-adolescents-a-study-using-gps-and-accelerometers
#10
Linde Van Hecke, Hannah Verhoeven, Peter Clarys, Delfien Van Dyck, Nico Van de Weghe, Tim Baert, Benedicte Deforche, Jelle Van Cauwenberg
BACKGROUND: Low physical activity levels and high levels of sedentary time among adolescents call for population wide interventions. Public open spaces can be important locations for adolescents' physical activity. This study aimed to describe the prevalence, frequency and context of public open space visitation and to gain insight into the individual, social and physical environmental factors associated with public open space use among 12- to 16-year-old Flemish (Belgian) adolescents...
January 22, 2018: International Journal of Health Geographics
https://www.readbyqxmd.com/read/29315267/experimental-evaluation-of-uwb-indoor-positioning-for-sport-postures
#11
Matteo Ridolfi, Stef Vandermeeren, Jense Defraye, Heidi Steendam, Joeri Gerlo, Dirk De Clercq, Jeroen Hoebeke, Eli De Poorter
Radio frequency (RF)-based indoor positioning systems (IPSs) use wireless technologies (including Wi-Fi, Zigbee, Bluetooth, and ultra-wide band (UWB)) to estimate the location of persons in areas where no Global Positioning System (GPS) reception is available, for example in indoor stadiums or sports halls. Of the above-mentioned forms of radio frequency (RF) technology, UWB is considered one of the most accurate approaches because it can provide positioning estimates with centimeter-level accuracy. However, it is not yet known whether UWB can also offer such accurate position estimates during strenuous dynamic activities in which moves are characterized by fast changes in direction and velocity...
January 9, 2018: Sensors
https://www.readbyqxmd.com/read/29238243/analysis-of-time-motion-and-heart-rate-in-elite-male-and-female-beach-handball
#12
Basilio Pueo, Jose M Jimenez-Olmedo, Alfonso Penichet-Tomas, Manuel Ortega Becerra, Jose J Espina Agullo
Beach handball is a spectacular new team sport; however, scientific knowledge about the demands in beach handball is very low. Consequently, the aim of this study was to analyze the physical demands of elite beach handball players by means of time-motion analysis with GPS technology and physiological response with Heart Rate (HR). Both male (n = 12) and female (n = 12) players from the Spanish Beach Handball National Team were recruited for this study. The sample consisted in four matches of two 10-min periods each...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29209229/proposal-of-a-global-training-load-measure-predicting-match-performance-in-an-elite-team-sport
#13
Brendan H Lazarus, Andrew M Stewart, Kevin M White, Amber E Rowell, Alireza Esmaeili, William G Hopkins, Robert J Aughey
Aim: The use of external and internal load is an important aspect of monitoring systems in team sport. The aim of this study was to validate a novel measure of training load by quantifying the training-performance relationship of elite Australian footballers. Methods: The primary training measure of each of 36 players was weekly load derived from a weighted combination of Global Positioning System (GPS) data and perceived wellness over a 24-week season. Smoothed loads representing an exponentially weighted rolling average were derived with decay time constants of 1...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29158244/post-traumatic-knee-mri-findings-and-associations-with-patient-trauma-and-clinical-characteristics-a-subgroup-analysis-in-primary-care-in-the-netherlands
#14
Kim van Oudenaarde, Nynke M Swart, Johan L Bloem, Sita Ma Bierma-Zeinstra, Paul R Algra, Bart Koes, Jan Verhaar, Rob Ghh Nelissen, Patrick Je Bindels, Pim Aj Luijsterburg, Monique Reijnierse
BACKGROUND: The added value of magnetic resonance imaging (MRI) in primary care is still being debated. A high diagnostic yield can be expected in young and active patients with post-traumatic knee complaints. AIM: To determine the frequency of MRI abnormalities in young and active patients (aged 18-45 years) and the associations with patient, trauma, and clinical characteristics. DESIGN AND SETTING: A subgroup analysis of 174 patients, aged 18-45 years with knee trauma of <6 months, allocated to MRI in a randomised controlled trial on the yield of MRI in primary care...
December 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/29105001/design-of-projectrun21-a-14-week-prospective-cohort-study-of-the-influence-of-running-experience-and-running-pace-on-running-related-injury-in-half-marathoners
#15
Camma Damsted, Erik Thorlund Parner, Henrik Sørensen, Laurent Malisoux, Rasmus Oestergaard Nielsen
BACKGROUND: Participation in half-marathon has been steeply increasing during the past decade. In line, a vast number of half-marathon running schedules has surfaced. Unfortunately, the injury incidence proportion for half-marathoners has been found to exceed 30% during 1-year follow-up. The majority of running-related injuries are suggested to develop as overuse injuries, which leads to injury if the cumulative training load over one or more training sessions exceeds the runners' load capacity for adaptive tissue repair...
November 6, 2017: Injury Epidemiology
https://www.readbyqxmd.com/read/29035588/external-match-loads-of-footballers-with-cerebral-palsy-a-comparison-among-sport-classes
#16
Javier Yanci, Daniel Castillo, Aitor Iturricastillo, Tomás Urbán, Raúl Reina
PURPOSE: The aim of this study was to determine and to compare the external match load (ML), according to sport class (FT) of footballers with cerebral palsy (CP) during the International Federation of CP Football (IFCPF) World Championships Qualification Tournament. METHODS: Forty-two international male footballers with CP participated in the data collection. The footballers with CP were classified according to their FT in three groups (i.e. FT5/6, FT7, and FT8)...
October 16, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28992540/kids-in-space-measuring-children-s-residential-neighborhoods-and-other-destinations-using-activity-space-gps-and-wearable-camera-data
#17
T Chambers, A L Pearson, I Kawachi, Z Rzotkiewicz, J Stanley, M Smith, M Barr, C Ni Mhurchu, L Signal
INTRODUCTION: Defining the boundary of children's 'neighborhoods' has important implications for understanding the contextual influences on child health. Additionally, insight into activities that occur outside people's neighborhoods may indicate exposures that place-based studies cannot detect. This study aimed to 1) extend current neighborhood research, using data from wearable cameras and GPS devices that were worn over several days in an urban setting; 2) define the boundary of children's neighborhoods by using leisure time activity space data; and 3) determine the destinations visited by children in their leisure time, outside their neighborhoods...
November 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28978747/optimal-dynamic-soaring-consists-of-successive-shallow-arcs
#18
Gabriel D Bousquet, Michael S Triantafyllou, Jean-Jacques E Slotine
Albatrosses can travel a thousand kilometres daily over the oceans. They extract their propulsive energy from horizontal wind shears with a flight strategy called dynamic soaring. While thermal soaring, exploited by birds of prey and sports gliders, consists of simply remaining in updrafts, extracting energy from horizontal winds necessitates redistributing momentum across the wind shear layer, by means of an intricate and dynamic flight manoeuvre. Dynamic soaring has been described as a sequence of half-turns connecting upwind climbs and downwind dives through the surface shear layer...
October 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28931147/the-quantified-self-during-travel-mapping-health-in-a-prospective-cohort-of-travellers
#19
Andrea Farnham, Reinhard Furrer, Ulf Blanke, Emily Stone, Christoph Hatz, Milo A Puhan
Background: Travel medicine research has remained relatively unchanged in the face of rapid expansion of international travel and is unlikely to meet health challenges beyond infectious diseases. Our aim was to identify the range of health outcomes during travel using real-time monitoring and daily reporting of health behaviours and outcomes and identify traveller subgroups who may benefit from more targeted advice before and during travel. Methods: We recruited a prospective cohort of travellers ≥ 18 years and planning travel to Thailand for <5 weeks from the travel clinics in Zurich and Basel (Switzerland)...
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28880052/effects-of-volleyball-plyometric-intervention-program-on-vertical-jumping-ability-in-male-volleyball-players
#20
Dariusz Mroczek, Krzysztof Maćkała, Adam Kawczynski, Edward Superlak, Paweł Chmura, Tomasz Seweryniak, Jan Chmura
BACKGROUND: This study aimed to investigate the effect of a 6-week plyometric exercise training program on the development of lower limb explosive power in terms of vertical jumping ability in university level volleyball players. The study involved 9 male volleyball players from the AWF Wroclaw University Sports Club, with a minimum of 5 years of training and competition experience. The program consisted of various bounds, hops, and jumps in vertical, horizontal, and mixed directions...
September 5, 2017: Journal of Sports Medicine and Physical Fitness
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