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10 km running

Josué Gómez-Molina, Ana Ogueta-Alday, Christopher Stickley, Jesus Camara Tobalina, Jon Cabrejas-Ugartondo, Juan García-López
The aim of this study was to compare the spatio-temporal parameters of trained runners and untrained participants with the same foot strike pattern (rearfoot) during running at controlled speeds. Twenty-one participants were classified in two groups according to their training experience: Trained (n=10, amateur runners with long distance training experience) and Untrained (n=11, healthy non-trained participants). Anthropometric variables were recorded, and the participants performed both a submaximal (between 9 and 15 km·h) and a graded exercise running test (from 6 km·h until exhaustion) on a treadmill...
October 6, 2016: Journal of Strength and Conditioning Research
Paweł Chmura, Marek Konefał, Marcin Andrzejewski, Jakub Kosowski, Andrzej Rokita, Jan Chmura
The present study attempts to assess changes in soccer players' physical activity profiles under the simultaneous influence of the different combinations of ambient temperature and relative humidity characterising matches of the 2014 FIFA World Cup hosted by Brazil. The study material consisted of observations of 340 players representing 32 national teams taking part in the tournament. The measured indices included total distances covered; distances covered with low, moderate, or high intensity; numbers of sprints performed, and peak running speeds achieved...
September 12, 2016: International Journal of Biometeorology
Yann Le Meur, Martin Buchheit, Anaël Aubry, Aaron J Coutts, Christophe Hausswirth
PURPOSE: Faster heart rate recovery (HRR) following high-to-maximal exercise (≥90% HRmax) has been reported in athletes suspected of functional overreaching (f-OR). This study investigated whether this response would also occur at lower exercise intensity. METHODS AND RESULTS: HRR and rate of perceived exertion (RPE) responses were compared during an incremental intermittent running protocol to exhaustion in twenty experienced male triathletes (8 control and 13 overload subjects led to f-OR) before (Pre), immediately after an overload training period (Mid) and following a 1-week taper (Post)...
September 6, 2016: International Journal of Sports Physiology and Performance
Nils Haller, Suzan Tug, Sarah Breitbach, Arne Jörgensen, Perikles Simon
PURPOSE: Increases in cfDNA concentrations have recently been demonstrated to occur in a variety of exhausting and vigorous exercise settings. Here we assessed the association of cfDNA with exercise duration and intensity in a controlled test-retest setting of a regenerative up to moderate aerobic run. METHODS: In a pre-test the lactate threshold (LT) was determined in 13 subjects (range: 10.8-13.4 km/h) by means of a step-wise incremental running test. Speed of the two endurance runs was set to 9...
September 6, 2016: International Journal of Sports Physiology and Performance
Beat Knechtle, Pantelis Theodoros Nikolaidis, Michael Stiefel, Thomas Rosemann, Christoph Alexander Rüst
The performance and sex differences of long-distance triathletes competing in 'Ironman Hawaii' are well investigated. However, less information is available with regards to triathlon races of the Ironman distance held under extreme environmental conditions (e.g. extreme cold) such as the 'Isklar Norseman Xtreme Triathlon' which started in 2003. In 'Isklar Norseman Xtreme Triathlon', athletes swim at a water temperature of ~13-15°C, cycle at temperatures of ~5-20°C and run at temperatures of ~12-28°C in the valley and of ~2-12°C at Mt...
October 31, 2016: Chinese Journal of Physiology
A M Zagatto, M Papoti, Asr Da Silva, R A Barbieri, E Z Campos, E C Ferreira, J P Loures, K Chamari
The assessment of aerobic endurance is important for training prescription in soccer, and is usually measured by straight running without the ball on a track or treadmill. Due to the ball control and technical demands during a specific soccer test, the running speeds are likely to be lower compared to a continuous incremental test. The aim of the present study was to compare the heart rate (HR), rating of perceived exertion (RPE) and speeds corresponding to 2.0 mmol∙L(-1), 3.5 mmol∙L(-1), lactate threshold (Dmax method) and peak lactate determined in the laboratory and in the Hoff circuit soccer-specific test...
September 2016: Biology of Sport
Mathieu Lacome, Julien Piscione, Jean-Philippe Hager, Chris Carling
This study investigated end-game and transient changes in running activities and whether these were concomitantly associated with reductions in skill-related performance in senior international rugby union match-play. Altogether, 18 official matches were analysed (322 individual observations) using computerised video-based tracking and event coding (Amisco Pro(®), SUP, Nice, France). In forwards and backs, trivial to small reductions (% difference: -2.1, ±1.3 to -10.0, ±4.0%) in total distance and that covered at high speeds (>18...
August 30, 2016: European Journal of Sport Science
Prashant Kumar, Anju Goel
The understanding of rapidly evolving concentrations of particulate matter (PMC) at signalised traffic intersections (TIs) is limited, but it is important for accurate exposure assessment. We performed "mobile" and "fixed-site" monitoring of size-resolved PMCs in the 0.25-34 μm range at TIs. On-road mobile measurements were made inside a car under five different ventilation settings on a 6 km long round route, passing through 10 different TIs. Fixed-site measurements were conducted at two types (3- and 4-way) of TIs...
September 14, 2016: Environmental Science. Processes & Impacts
T B Andersen, P Krustrup, M Bendiksen, C O Orntoft, M B Randers, S A Pettersen
The present study evaluated the effect of a smaller, lighter ball on kicking speed and technical-tactical and physical match performance in high-level adult female footballers. In the laboratory test setting, the peak ball velocity was 6% higher with the new ball (NB) than the standard ball (SB) (26.5±0.5 vs. 25.1±0.5 m·s(-1), p<0.05). However, during match-play, no differences were observed in mean heart rate (87±5 vs. 87±5%HRmax; p>0.05), blood lactate (90 min: 4.7±1.7 and 4.0±1.7 mmol·l(-1); p>0...
August 23, 2016: International Journal of Sports Medicine
Jonathan H Kim, Yi-An Ko, Jeff Hedley, James MacNamara, Mosaab Awad, William Taylor, Sean Healy, Hiroshi Aida, Ngoc-Anh Le, Peter W Wilson, Melissa White, Laurence S Sperling, Joseph S Wilson, Aaron L Baggish
OBJECTIVE: Exercise-induced cardiac dysfunction and corollary biomarker release have been documented following long-distance running events. To what degree these processes occur during shorter distance running events is unknown. METHODS: 72 healthy recreational runners (54% male/46% female) recruited by age (group 1 (18-20 years old, N=19); group 2 (45-50 years old, N=27); group 3 (70-75 years old, N=26)) were studied with echocardiography and biochemical profiling during participation in a 10 km running race...
August 16, 2016: Heart: Official Journal of the British Cardiac Society
Seteena L Ueberschlag, James R Seay, Alexandra H Roberts, Pamela C DeSpirito, Jeremy M Stith, Rodney J Folz, Kathleen A Carter, Edward P Weiss, Gerald S Zavorsky
UNLABELLED: The purpose of this study determined if oral supplementation of Protandim® (a nutraceutical) for 90 days improved 5-km running performance and reduced serum thiobarbituric acid-reacting substances (TBARS) at rest, an indicator of oxidative stress. Secondary objectives were to measure whole blood superoxide dismutase (SOD), glutathione (GSH), and glutathione peroxidase (GPX), at rest and 10 minutes after completion of the race before and after supplementation as well as quality of life...
2016: PloS One
Julien Louis, Laurie-Anne Marquet, Eve Tiollier, Stéphane Bermon, Christophe Hausswirth, Jeanick Brisswalter
PURPOSE: We investigated the effects of a 3-week dietary periodization on immunity and sleep in triathletes. METHODS: 21 triathletes were divided into two groups with different nutritional guidelines during a 3-week endurance training program including nine twice a day sessions with lowered (SL group) or maintained (CON group) glycogen availability during the overnight recovery period. In addition to performance tests, sleep was monitored every night. Systemic and mucosal immune parameters as well as the incidence of URTI were monitored every week of the training/nutrition protocol...
October 2016: European Journal of Applied Physiology
Daniel Castillo, Asier Los Arcos, Raùl Martinez-Santos
BACKGROUND: Physical characteristics have been widely analysed in order to understand why some soccer players are more successful than others. Therefore, the aims of this study were: a) to describe the evolution of aerobic endurance performance across 18 years in a Spanish elite soccer academy, b) to know if the playing position could affect physical testing performance, and c) to look into the alleged impact of this factor on the professional career of soccer players. METHODS: We considered 162 players belonging to the reserve team of an elite Spanish soccer club from 1994 to 2012...
July 21, 2016: Journal of Sports Medicine and Physical Fitness
Thomas M Doering, David G Jenkins, Peter R Reaburn, Nattai R Borges, Erik Hohmann, Stuart M Phillips
PURPOSE: The objective of this study is to compare the integrated muscle protein synthesis (MPS) rates of masters and younger triathletes over three consecutive days of intense endurance training. Recovery of cycling performance, after muscle-damaging running, was also compared between groups. METHODS: Five masters (age, 53 ± 2 yr; V˙O2max, 55.7 ± 6.9 mL·kg·min) and six younger (age, 27 ± 2 yr; V˙O2max, 62.3 ± 1.5 mL·kg·min) trained triathletes volunteered for the study...
August 2016: Medicine and Science in Sports and Exercise
Mark Ross, Peter Tormey, Lesley Ingram, Richard Simpson, Eva Malone, Geraint Florida-James
CD31(+) T-cells have been documented to possess vasculogenic properties, and have been termed 'angiogenic T-cells' (TANG ). No study to date has fully characterised the effect of acute exercise on TANG cells. Twelve male participants aged 24-45yrs undertook a running 10 km time trial, with peripheral blood samples taken pre-, immediately post- and 1-hour post-exercise for quantification of TANG cells and subsequent CXCR4 cell surface expression by flow cytometry. TANG cells demonstrated a 102% increase in number in peripheral circulation immediately post-exercise compared to pre-exercise levels, followed by a large egress (50%) from the circulation in total TANG cells 1-hour post-exercise...
July 18, 2016: Experimental Physiology
Juan J Salinero, Maria L Soriano, Beatriz Lara, César Gallo-Salazar, Francisco Areces, Diana Ruiz-Vicente, Javier Abian-Vicen, Cristina Gonzalez-Millan, Juan Del Coso
BACKGROUND: The aim of the study was to analyze the relationship between anthropometry, training characteristics, muscular strength and effort-related cardiovascular response and marathon race time in male amateur runners. METHODS: A total of 84 male amateur marathon runners aged between 23 and 70 years took part in this study (41.0±9.5 years). All of them competed in the 2013 edition of the Madrid Marathon with a finish time between 169.8 and 316 min (226.0±28...
July 6, 2016: Journal of Sports Medicine and Physical Fitness
Neil D Clarke, James R Thomas, Marion Kagka, Roger Ramsbottom, Anne Delextrat
Oral carbohydrate rinsing has been demonstrated to provide beneficial effects on exercise performance of durations of up to one hour, albeit predominately in a laboratory setting. The aim of the present study was to investigate the effects of different concentrations of carbohydrate solution mouth-rinse on 5 km running performance. Fifteen healthy men (n=9; mean±SD age: 42±10 years; height: 177.6±6.1 cm; body mass: 73.9±8.9 kg) and women (n=6; mean±SD age: 43±9 years; height: 166.5±4.1 cm; body mass: 65...
June 30, 2016: Journal of Strength and Conditioning Research
Giuseppe Lippi, Ruggero Buonocore, Cantor Tarperi, Martina Montagnana, Luca Festa, Elisa Danese, Marco Benati, Gian Luca Salvagno, Chiara Bonaguri, Dirk Roggenbuck, Federico Schena
The aim of this study was to evaluate DNA damage in response to increasing bulks of aerobic physical exercise. Fifteen adult and trained athletes performed four sequential trials with increasing running distance (5-, 10-, 21- and 42-km) in different periods of the year. The γ-H2AX foci parameters were analyzed before and 3h after the end of each trial. The values of all γ-H2AX foci parameters were enhanced after the end of each trial, with values gradually increasing from the 5- to the 42-km trial. Interestingly, a minor increase of γ-H2AX foci was still evident after 5- to 10-km running, but a much higher increase occurred when the running distance exceeded 21km...
September 1, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
Guiji Wang, Xuemiao Chen, Jintao Cai, Xuping Zhang, Tao Chong, Binqiang Luo, Jianheng Zhao, Chengwei Sun, Fuli Tan, Cangli Liu, Gang Wu
A high current pulsed power generator CQ-3-MMAF (Multi-Modules Assembly Facility, MMAF) was developed for material dynamics experiments under ramp wave and shock loadings at the Institute of Fluid Physics (IFP), which can deliver 3 MA peak current to a strip-line load. The rise time of the current is 470 ns (10%-90%). Different from the previous CQ-4 at IFP, the CQ-3-MMAF energy is transmitted by hundreds of co-axial high voltage cables with a low impedance of 18.6 mΩ and low loss, and then hundreds of cables are reduced and converted to tens of cables into a vacuum chamber by a cable connector, and connected with a pair of parallel metallic plates insulated by Kapton films...
June 2016: Review of Scientific Instruments
Caroline Sunderland, Phillip L Edwards
This study aimed to: 1) provide a position specific activity profile for elite male hockey players; 2) determine if the activity profile was altered by the introduction of the 'self-pass' rule and 3) provide information relating to match to match variability in elite male field hockey. The activity of 28 elite male field hockey players was analysed over 2 seasons totalling 395 player-match analyses using Global Positioning Satellite technology. Total distance, high speed running (>15.5 km.h), sprinting (>20 km...
June 27, 2016: Journal of Strength and Conditioning Research
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