Weather Conditions, Travel Distance, Rest, and Running Performance: The 2014 FIFA World Cup and Implications for the Future

2017 ◽  
Vol 31 (1) ◽  
pp. 27-43 ◽  
Author(s):  
Nicholas Watanabe ◽  
Pamela Wicker ◽  
Grace Yan
Keyword(s):  
High Intensity ◽  
Weather Conditions ◽  
Travel Distance ◽  
Heat Index ◽  
Host Countries ◽  
World Cup ◽  
Policy Makers ◽  
Running Performance ◽  
Clear Sky ◽  
Travel Distances

The awarding of the hosting of the Football World Cup to Russia and Qatar initiated discussions about temperature and travel distances related to the game. This study examines the effect of weather conditions, travel distances, and rest days—three factors potentially causing fatigue—on running performance using player-level and teamlevel data from the 2014 World Cup. The results show that the heat index (combining temperature and humidity) significantly decreased running performance (number of sprints, high-intensity running), while a clear sky was positively associated with distance covered at high intensity. Travel distance and rest were insignificant. When these models are used to predict running performance at the 2022 Qatar World Cup, the projections show that the combination of heat and wind could hinder the performance of both players and teams and create potentially dangerous conditions. The present study has implications for policy makers regarding the choice of future host countries.

scholarly journals Hazard Duration Model with Panel Data for Daily Car Travel Distance: A Toyota City Case Study

2020 ◽  
Vol 12 (16) ◽  
pp. 6331
Author(s):  
Jiahang He ◽  
Toshiyuki Yamamoto ◽  
Tomio Miwa ◽  
Takayuki Morikawa
Keyword(s):  
Weather Conditions ◽  
Travel Distance ◽  
Logistic Distribution ◽  
Socioeconomic Indicators ◽  
Panel Model ◽  
Multiple Variables ◽  
And Gender ◽  
Car Travel ◽  
Travel Distances

The limitation of battery size for electric vehicles has driven researchers to study driving distance. Trip patterns and traveler preferences in terms of distance are affected by multiple variables. This study, using socioeconomics, weather conditions, and vehicle characteristics as covariates, compares lognormal, log-logistic, and Weibull distribution assumptions on daily car travel distances with a parametric hazard model for both pooled and panel regression. The results reveal that the log-logistic distribution performed best for both the pooled and panel models, and the inclusion of heterogeneity by the panel model improves the model. The results suggest that the travel distances achieved by people in Toyota City, Japan, is highly dependent on the weather conditions, specifically the precipitation and wind speed. Socioeconomic indicators, such as age and gender, and vehicle characteristics, such as engine size and vehicle price, also significantly affect the car travel distance.

scholarly journals Examining dispatching practices for Interagency Hotshot Crews to reduce seasonal travel distance and manage fatigue

2018 ◽  
Vol 27 (9) ◽  
pp. 569 ◽  
Author(s):  
Erin J. Belval ◽  
David E. Calkin ◽  
Yu Wei ◽  
Crystal S. Stonesifer ◽  
Matthew P. Thompson ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Travel Distance ◽  
Simulation Process ◽  
Fatigue Management ◽  
Potential Benefits ◽  
Management Policies ◽  
Optimisation Model ◽  
Fatigue Mitigation ◽  
Travel Distances

Interagency Hotshot Crews (IHCs) are a crucial firefighting suppression resource in the United States. These crews travel substantial distances each year and work long and arduous assignments that can cause accumulated fatigue. Current dispatching practices for these crews are supposed to send the closest resource while adhering to existing fatigue-management policies. In this research, we designed a simulation process that repeatedly implements an optimisation model to assign crews to suppression requests. This study examines the potential effects of using an optimisation approach to shorten seasonal crew travel distances and mitigate fatigue. We also examine the potential benefits of coordinating crew-dispatch decisions to meet multiple requests. Results indicate there is substantial room for improvement in reducing travel distances while still balancing crew fatigue; coordinating crew dispatching for multiple requests can increase the assignment efficiency, particularly when both fatigue mitigation and travel distances are jointly optimised. This research indicates implementing an optimisation model for dispatching IHCs is promising.

scholarly journals APLIKASI RADAR CUACA UNTUK IDENTIFIKASI FLUKTUASI KONDISI CUACA EKSTRIM (STUDI KASUS: BANJIR DI KOTA MEDAN TANGGAL 5 OKTOBER 2018)

2020 ◽  
Vol 20 (1) ◽  
pp. 13-21
Author(s):  
Budi Prasetyo ◽  
Nikita Pusparini ◽  
Irwandi Irwandi ◽  
Welly Fitria
Keyword(s):  
High Intensity ◽  
Descriptive Analysis ◽  
Weather Conditions ◽  
The Third ◽  
Region I ◽  
Average Rainfall ◽  
Second Period ◽  
Graphic Environment

Intisari Data Radar cuaca Enterprise Electronics Corporation (EEC) selama 24 jam pada tanggal 5 Oktober 2018 mulai pukul 07.00 WIB hingga 07.00 WIB tanggal 6 Oktober 2018 digunakan pada penelitian ini. Data ini diperoleh dari Balai Besar Meteorologi Klimatologi dan Geofisika Wilayah I dalam format volumetric (.vol) dan memiliki selang waktu per 10 menit. Metode yang digunakan yaitu analisis deskriptif hasil produk turunan Radar yang diolah menggunakan perangkat lunak yang berasal dari produsen radar yaitu Enterprise Doppler Graphic Environment (EDGE) berupa Coloumn Maximum (CMAX), momen intensitas horizontal, momen rata-rata curah hujan, dan Vertical Integrated Reflectivity (VIR), serta grafik curah hujan (RHG). Penelitian ini memperlihatkan bahwa fluktuasi kondisi cuaca yang terjadi pada tanggal 5 Oktober 2018 sangat tinggi. Secara umum, curah hujan intensitas tinggi yang terjadi di Kota Medan pada tanggal 5 Oktober 2018 umumnya terbagi menjadi tiga periode, yaitu hujan pada siang hingga sore (pukul 14.00 – 15.50 WIB), hujan pada petang (pukul 18.20 – 19.40 WIB), dan hujan pada malam hari (21.10 – 23.40 WIB). Fluktuasi tertinggi terjadi pada periode pertama dengan kenaikan curah hujan tertinggi terjadi di Kecamatan Medan Helvetia dengan kenaikan curah hujan sebanyak 32 mm dalam 10 menit yang terjadi pada pukul 14.50 WIB, pada periode kedua terjadi di Kecamatan Medan Kota dengan kenaikan 24 mm pada pukul 18.20 WIB, dan periode ketiga terjadi di Kecamatan Medan Johor dengan kenaikan 17 mm pada pukul 21.20 WIB. Abstract Enterprise Electronics Corporation (EEC) Data Radar for 24 hours on October 5th, 2018, starting at 7:00 LT until 07.00 LT on October 6th, 2018, were used in this research. These data were obtained from the Center for Meteorology, Climatology and Geophysics in Region I in the form of volumetric (.vol) and has an interval of 10 minutes. The method used were descriptive analysis of Radar products processed by software from Radar manufacture, namely Enterprise Doppler Graphic Environment (EDGE) software which in the form of Column Maximum (CMAX) moments of horizontal intensity and moments of average rainfall, Vertical Integrated Reflectivity (VIR), and rainfall graph (RHG). We found that there were high fluctuations in weather conditions that occurred on October 5th, 2018. In general, the high-intensity rainfall occurred in Medan city on October 5th, 2018 was generally divided into three periods, namely rain in the afternoon until evening (at 14:00 - 15:50 LT), rain at dusk (18:20 - 19:40 LT), rain at night (21.10 - 23.40 LT). The highest fluctuation occurred in the first period with the highest increase of rainfall occurred in Medan Helvetia Subdistrict with an increase of 32 mm rainfall in 10 minutes which occurred at 14.50 LT; the second period occurred in Medan Kota District with a 24 mm increase at 18.20 LT, and the third period occurred in Medan Johor District with a 17 mm increase at 21.20 LT.

scholarly journals Relation between 1,500-m running performance and running economy during high-intensity running in well-trained distance runners

2017 ◽  
Vol 6 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Fumiya Tanji ◽  
Yusuke Shirai ◽  
Toshiki Tsuji ◽  
Wataru Shimazu ◽  
Yoshiharu Nabekura
Keyword(s):  
High Intensity ◽  
Running Economy ◽  
Distance Runners ◽  
Running Performance

scholarly journals Acute administration of high doses of taurine does not substantially improve high-intensity running performance and the effect on maximal accumulated oxygen deficit is unclear

2016 ◽  
Vol 41 (5) ◽  
pp. 498-503 ◽  
Author(s):  
Fabio Milioni ◽  
Elvis de Souza Malta ◽  
Leandro George Spinola do Amaral Rocha ◽  
Camila Angélica Asahi Mesquita ◽  
Ellen Cristini de Freitas ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Exercise Intensity ◽  
Maximal Oxygen Uptake ◽  
High Intensity ◽  
Treadmill Running ◽  
Oxygen Deficit ◽  
Time To Exhaustion ◽  
Acute Administration ◽  
Running Performance ◽  
Accumulated Oxygen Deficit

The aim of the present study was to investigate the effects of acute administration of taurine overload on time to exhaustion (TTE) of high-intensity running performance and alternative maximal accumulated oxygen deficit (MAODALT). The study design was a randomized, placebo-controlled, crossover design. Seventeen healthy male volunteers (age: 25 ± 6 years; maximal oxygen uptake: 50.5 ± 7.6 mL·kg−1·min−1) performed an incremental treadmill-running test until voluntary exhaustion to determine maximal oxygen uptake and exercise intensity at maximal oxygen uptake. Subsequently, participants completed randomly 2 bouts of supramaximal treadmill-running at 110% exercise intensity at maximal oxygen uptake until exhaustion (placebo (6 g dextrose) or taurine (6 g) supplementation), separated by 1 week. MAODALT was determined using a single supramaximal effort by summating the contribution of the phosphagen and glycolytic pathways. When comparing the results of the supramaximal trials (i.e., placebo and taurine conditions) no differences were observed for high-intensity running TTE (237.70 ± 66.00 and 277.30 ± 40.64 s; p = 0.44) and MAODALT (55.77 ± 8.22 and 55.06 ± 7.89 mL·kg−1; p = 0.61), which seem to indicate trivial and unclear differences using the magnitude-based inferences approach, respectively. In conclusion, acute 6 g taurine supplementation before exercise did not substantially improve high-intensity running performance and showed an unclear effect on MAODALT.

Macroplastic Debris Transfer in Rivers: A Travel Distance Approach 

2021 ◽  
Author(s):  
Robert Newbould ◽  
Mark Powell ◽  
Mick Whelan
Keyword(s):  
Average Distance ◽  
Field Measurements ◽  
River System ◽  
Tracer Experiment ◽  
Travel Distance ◽  
Distance Distributions ◽  
Different Types ◽  
Meander Bends ◽  
Distance Approach ◽  
Travel Distances

<p>Plastic accumulation in the marine environment is a major concern given the harmful effects and longevity of plastics at sea. Although rivers significantly contribute to flux of plastic to marine systems, plastic transport in rivers remains poorly understood and estimates of riverine plastic flux derived from field measurements and modelling efforts are highly uncertain. In this study, a new probabilistic model of plastic transport in rivers is presented which describes the main processes controlling displacement to predict the statistical distribution of travel distances for individual items of buoyant macroplastic debris. Macroplastic transport is controlled by retention in temporary stores (or traps) created by vegetation, bank roughness elements and other obstacles. The behaviour of these traps is represented in the model via a series of Bernoulli trials conducted in a Monte Carlo simulation framework. The probability of retention or release from traps is described using physical characteristics such as the type of vegetation, channel width or channel sinuosity index. The model was calibrated using a tracer experiment with six replicates, conducted in a small 1.1 km river reach. For each replicate, 90 closed air-filled plastic bottles were injected at the upstream end of the reach and the location of each bottle was recorded several times over a 24-hour period. Bottles were chosen as ‘model’ macroplastic litter items given their high usage and littering volume. Travel distances were low (the average distance travelled over 24 hours was 231 m and no bottles travelled more than 1.1 km, the length of the study reach) and variable (the coefficient of variation for the replicates ranged between 0.54 and 1.41). The travel distance distributions were controlled by the location and characteristics of discrete traps. The numerical model described the observed travel distance distributions reasonably well (particularly the trapping effect of overhanging trees and flow separation at meander bends), which suggests that modelling plastic transport for longer reaches and even whole catchments using a stochastic travel distance approach is feasible. The approach has the potential to improve estimates of total river plastic flux to the oceans, although significant knowledge gaps remain (e.g. the rate and location of plastic supply to river systems, the transport behaviours of different types of plastic debris in rivers and the effectiveness of different traps in different types of river system).</p>

scholarly journals Associations Between Selected Training-Stress Measures and Fitness Changes in Male Soccer Players

2019 ◽  
Vol 14 (8) ◽  
pp. 1050-1057 ◽  
Author(s):  
Alireza Rabbani ◽  
Mehdi Kargarfard ◽  
Carlo Castagna ◽  
Filipe Manuel Clemente ◽  
Craig Twist
Keyword(s):  
Heart Rate ◽  
High Intensity ◽  
Soccer Players ◽  
Running Performance ◽  
Total Distance ◽  
Professional Soccer ◽  
Before And After ◽  
Body Load ◽  
Training Stress ◽  
Training Impulse

Purpose: To investigate the relationship between accumulated global positioning system–accelerometer-based and heart rate–based training metrics and changes in high-intensity intermittent-running capacity during an in-season phase in professional soccer players. Methods: Eleven male professional players (mean [SD] age 27.2 [4.5] y) performed the 30-15 Intermittent Fitness Test (30-15IFT) before and after a 5-wk in-season training phase, and the final velocity (VIFT) was considered their high-intensity intermittent-running capacity. During all sessions, Edwards training impulse (Edwards TRIMP), Banister TRIMP, Z5 TRIMP, training duration, total distance covered, new body load (NBL), high-intensity running performance (distance covered above 14.4 km·h−1), and very-high-intensity running performance (distance covered above 19.8 km·h−1) were recorded. Results: The players’ VIFT showed a most likely moderate improvement (+4.3%, 90% confidence limits 3.1–5.5%, effect size 0.70, [0.51–0.89]). Accumulated NBL, Banister TRIMP, and Edwards TRIMP showed large associations (r = .51–.54) with changes in VIFT. A very large relationship was also observed between accumulated Z5 TRIMP (r = .72) with changes in VIFT. Large to nearly perfect within-individual relationships were observed between NBL and some of the other training metrics (ie, Edwards TRIMP, Banister TRIMP, training duration, and total distance) in 10 out of 11 players. Conclusions: Heart rate–based training metrics can be used to monitor high-intensity intermittent-running-capacity changes in professional soccer players. The dose–response relationship is also largely detected using accelerometer-based metrics (ie, NBL) to track changes in high-intensity intermittent-running capacity of professional soccer players.

Targeted Agenda Program: An Innovative Approach to Facilitate Progress in Disaster Health

2008 ◽  
Vol 23 (S2) ◽  
pp. s43-s47
Author(s):  
Joost J.L.M. Bierens ◽  
Brigitte Nooij ◽  
Ferd Sturmans
Keyword(s):  
Health Impact Assessment ◽  
Weather Conditions ◽  
Health Impact ◽  
Health Organizations ◽  
Policy Makers ◽  
Expert Opinions ◽  
Golden Standard ◽  
First Time ◽  
Operational Aspects

AbstractThe Targeted Agenda Program (TAP) has been introduced for the first time during the 15th World Congress on Disaster and Emergency Medicine (15WCDEM) in Amsterdam in 2007 to stimulate interaction between the participants before, during and after the congress. A TAP process consists of 11 steps, starting with defining a relevant issue and ending with the publication of a TAP report based on expert opinions. Seven TAP groups participated during the 15WCDEM. The TAP issues referred to: (1) the need for health impact assessment of disasters; (2) the golden standard for preparedness for a chemical, biological, radiological and nuclear disasters; (3) the role of acute psychosocial first aid; (4) the 10 most important issues for policy makers to minimize health effects of floods; (5) the search for a golden standard in the treatment of wounded combatants; (6) the preparedness of health organizations for consequences of extreme weather conditions; and (7) the health problems of high-vulnerability groups during disasters. This article describes the motivation and operational aspects of the TAP and advocates that this concept can play an important facilitating role in focus, networking and enhancement of knowledge in the field of disaster health.

Correction: Effects of High-intensity Warm-ups on Running Performance

2018 ◽  
Vol 39 (06) ◽  
pp. e1-e1
Author(s):  
Fernando González-Mohíno ◽  
Raúl Martín ◽  
Daniel Santos-García ◽  
Pedro Fidel ◽  
Francisco de Asis Fernandez ◽  
...  
Keyword(s):  
High Intensity ◽  
Running Performance

scholarly journals Dietary nitrate supplementation enhances high-intensity running performance in moderate normobaric hypoxia, independent of aerobic fitness

Nitric Oxide ◽  
2016 ◽  
Vol 59 ◽  
pp. 63-70 ◽  
Author(s):  
Oliver Michael Shannon ◽  
Lauren Duckworth ◽  
Matthew John Barlow ◽  
David Woods ◽  
Jose Lara ◽  
...  
Keyword(s):  
Aerobic Fitness ◽  
High Intensity ◽  
Normobaric Hypoxia ◽  
Running Performance ◽  
Dietary Nitrate ◽  
Nitrate Supplementation
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