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By Nathan Cashion Chiropractic & Sports Medicine Student
L E Hodgson, E Walter, R M Venn, R Galloway, Y Pitsiladis, F Sardat, L G Forni
Introduction: A growing body of evidence suggests even small rises in serum creatinine (SCr) are of considerable clinical relevance. Given that participants in endurance events are exposed to potential (repeated) renal insults, a systematic review was undertaken to collate current evidence for acute kidney injury (AKI), complicating such events. Methods: A systematic review of studies and case reports meeting inclusion criteria on Medline and EMBASE (inception to October 2015)...
2017: BMJ Open Sport & Exercise Medicine
Florian Azad Engel, Hans-Christer Holmberg, Billy Sperlich
BACKGROUND: Runners at various levels of performance and specializing in different events (from 800 m to marathons) wear compression socks, sleeves, shorts, and/or tights in attempt to improve their performance and facilitate recovery. Recently, a number of publications reporting contradictory results with regard to the influence of compression garments in this context have appeared. OBJECTIVES: To assess original research on the effects of compression clothing (socks, calf sleeves, shorts, and tights) on running performance and recovery...
December 2016: Sports Medicine
Fabrice Vercruyssen, Marcus Tartaruga, Nicolas Horvais, Jeanick Brisswalter
PURPOSE: This study aimed to examine the effects of footwear and neuromuscular fatigue induced by short distance trail running (TR) on running economy (RE) and biomechanics in well-trained and traditionally shod runners. METHODS: RE, vertical and leg stiffness (Kvert and Kleg), as well as foot strike angle were measured from two 5-min treadmill running stages performed at a speed of 2.5 (with 10% grade, uphill running) and 2.77 m·s (level running) before and after an 18...
October 2016: Medicine and Science in Sports and Exercise
Bernd Volker Scheer, Dejan Reljic, Andrew Murray, Ricardo Jose Soures Costa
BACKGROUND: Blisters are the most common dermatologic problem in ultraendurance runners. Their incidence, localization, pain scores, and risk factors in field conditions are poorly understood. METHODS: We conducted an observational field-based cohort study during the 5-day multistage 2010 and 2011 Al Andalus Ultimate Trail (219 km). Daily postrace data on blister frequency, localization, severity, and preventive measures from 50 ultramarathon runners were collected through the direct interview technique...
September 2014: Journal of the American Podiatric Medical Association
Lawrence E Armstrong, Evan C Johnson, Amy L McKenzie, Lindsay A Ellis, Keith H Williamson
The purpose of this field investigation was to identify and clarify factors that may be used by strength and conditioning professionals to help athletes drink adequately but not excessively during endurance exercise. A universal method to accomplish this goal does not exist because the components of water balance (i.e., sweat rate, fluid consumed) are different for each athlete and endurance events differ greatly. Twenty-six male cyclists (mean ± SD; age, 41 ± 8 years; height, 177 ± 7 cm; body mass, 81.85 ± 8...
April 2015: Journal of Strength and Conditioning Research
Martin D Hoffman, Jeremy Joslin, Ian R Rogers
No abstract text is available yet for this article.
January 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Grant S Lipman, Bernd V Scheer
No abstract text is available yet for this article.
June 2015: Wilderness & Environmental Medicine
Carl J Lavie, Duck-chul Lee, Xuemei Sui, Ross Arena, James H O'Keefe, Timothy S Church, Richard V Milani, Steven N Blair
Considerable evidence has established the link between high levels of physical activity (PA) and all-cause and cardiovascular disease (CVD)-specific mortality. Running is a popular form of vigorous PA that has been associated with better overall survival, but there is debate about the dose-response relationship between running and CVD and all-cause survival. In this review, we specifically reviewed studies published in PubMed since 2000 that included at least 500 runners and 5-year follow-up so as to analyze the relationship between vigorous aerobic PA, specifically running, and major health consequences, especially CVD and all-cause mortality...
November 2015: Mayo Clinic Proceedings
Martin D Hoffman, Ian R Rogers, Jeremy Joslin, Chad A Asplund, William O Roberts, Benjamin D Levine
Increasing participation in ultramarathons and other ultra-endurance events amplifies the potential for serious medical issues during and immediately following these competitions. Since these events are often located in remote settings where access may be extremely limited; the diagnostic capabilities, treatment options, and expectations of medical care may differ from those of urban events. This work outlines a process for assessment and treatment of athletes presenting for medical attention in remote environments, with a focus on potentially serious conditions such as major trauma, acute coronary syndrome, exertional heat stroke, hypothermia, hypoglycemia, exercise-associated hyponatremic encephalopathy, severe dehydration, altitude illness, envenomation, anaphylaxis, and bronchospasm...
February 2015: Sports Medicine
Josh Timothy Arnold, Samuel James Oliver, Tammy Maria Lewis-Jones, Lee John Wylie, Jamie Hugo Macdonald
We hypothesized that acute dietary nitrate (NO3(-)) provided as concentrated beetroot juice supplement would improve endurance running performance of well-trained runners in normobaric hypoxia. Ten male runners (mean (SD): sea level maximal oxygen uptake, 66 (7) mL·kg(-1)·min(-1); 10 km personal best, 36 (2) min) completed incremental exercise to exhaustion at 4000 m and a 10-km treadmill time-trial at 2500 m simulated altitude on separate days after supplementation with ∼7 mmol NO3(-) and a placebo at 2...
June 2015: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Mohannad Abou Shoak, Beat Knechtle, Christoph Alexander Rüst, Romuald Lepers, Thomas Rosemann
BACKGROUND: Participation and performance trends regarding the nationality of ultraendurance athletes have been investigated in the triathlon, but not in running. The present study aimed to identify the countries in which multistage ultramarathons were held around the world and the nationalities of successful finishers. METHODS: Finisher rates and performance trends of finishers in multistage ultramarathons held worldwide between 1992 and 2010 were investigated...
2013: Open Access Journal of Sports Medicine
Christoph A Rüst, Beat Knechtle, Patrizia Knechtle, Andrea Wirth, Thomas Rosemann
We investigated, in 50 recreational male ultrarunners, the changes in body mass, selected hematological and urine parameters, and fluid intake during a 100-km ultramarathon. The athletes lost (mean and SD) 2.6 (1.8) % in body mass (p < 0.0001). Running speed was significantly and negatively related to the change in body mass (p < 0.05). Serum sodium concentration ([Na⁺]) and the concentration of aldosterone increased with increasing loss in body mass (p < 0.05). Urine-specific gravity increased (p < 0...
June 2012: Journal of Strength and Conditioning Research
Andrew R Getzin, Cindy Milner, Karen M LaFace
Participation in ultraendurance events has been increasing. Appropriate nutrition in training and fueling while racing within the confines of gastrointestinal tolerability is essential for optimal performance. Unfortunately, there has been a paucity of studies looking at this special population of athletes. Recent field studies have helped to clarify appropriate fluid intake and dispel the myth that moderate dehydration while racing is detrimental. Additional current nutrition research has looked at the role of carbohydrate manipulation during training and its effect on macronutrient metabolism, as well as of the benefits of the coingestion of multiple types of carbohydrates for race fueling...
November 2011: Current Sports Medicine Reports
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