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https://www.readbyqxmd.com/read/29141506/triathlon-transition-study-quantifying-differences-in-running-movement-pattern-and-precision-after-bike-run-transition
#1
Christian Weich, Randall L Jensen, Manfred Vieten
Various publications discuss the discrepancies of running in triathlons and stand-alone runs. However, those methods, such as analysing step-characteristics or ground-contact time, lack the ability to quantitatively discriminate between subtle running differences. The attractor method can be applied to overcome those shortcomings. The purpose was to detect differences in athletes' running patterns (δM) and movement precision (δD) by comparing a 5,000 m run after a prior cycling session (TRun) with an isolated run over the same distance (IRun)...
November 15, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29071114/cracking-the-code-for-maintaining-quality-training-in-olympic-distance-triathlon-lessons-learnt-from-a-squad-of-elite-scandinavian-athletes
#2
Corrie Myburgh, Tobias Hansen, Anders Holm Beck, Eleanor Boyle
OBJECTIVE: High-quality training is a key determinant of performance in the Olympic distance triathlon and is potentially influenced by a unique array of context-specific biopsychosocial factors. Our objective was to explore and describe these factors among squad members of a university-based, elite Olympic distance triathlete developmental programme. METHOD: A qualitative investigation using a visual communication tool-assisted focus group and longitudinal semistructured individual interviews was conducted...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29050040/maximal-fat-oxidation-is-related-to-performance-in-an-ironman-triathlon
#3
Jacob Frandsen, Stine Dahl Vest, Steen Larsen, Flemming Dela, Jørn W Helge
The aim of the present study was to investigate the relationship between maximal fat oxidation rate (MFO) measured during a progressive exercise test on a cycle ergometer and ultra-endurance performance. 61 male ironman athletes (age: 35±1 yrs. [23-47 yrs.], with a BMI of 23.6±0.3 kg/m(2) [20.0-30.1 kg/m(2)], a body fat percentage of 16.7±0.7% [8.4-30.7%] and a VO2peak of 58.7±0.7 ml/min/kg [43.9-72.5 ml/min/kg] SEM [Range]) were tested in the laboratory between 25 and 4 days prior to the ultra-endurance event, 2016 Ironman Copenhagen...
October 19, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28975231/death-and-cardiac-arrest-in-u-s-triathlon-participants-1985-to-2016-a-case-series
#4
Kevin M Harris, Lawrence L Creswell, Tammy S Haas, Taylor Thomas, Monica Tung, Erin Isaacson, Ross F Garberich, Barry J Maron
Background: Reports of race-related triathlon fatalities have raised questions regarding athlete safety. Objective: To describe death and cardiac arrest among triathlon participants. Design: Case series. Setting: United States. Participants: Participants in U.S. triathlon races from 1985 to 2016. Measurements: Data on deaths and cardiac arrests were assembled from such sources as the U...
October 17, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28904979/the-russians-are-the-fastest-in-marathon-cross-country-skiing-the-engadin-ski-marathon
#5
Pantelis Theodoros Nikolaidis, Jan Heller, Beat Knechtle
It is well known that athletes from a specific region or country are dominating certain sports disciplines such as marathon running or Ironman triathlon; however, little relevant information exists on cross-country skiing. Therefore, the aim of the present study was to investigate the aspect of region and nationality in one of the largest cross-country skiing marathons in Europe, the "Engadin Ski Marathon." All athletes (n = 197,125) who finished the "Engadin Ski Marathon" between 1998 and 2016 were considered...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28900572/return-to-running-following-a-knee-disarticulation-amputation-a-case-report
#6
Angela R Diebal-Lee, Robert S Kuenzi, Christopher A Rábago
BACKGROUND AND PURPOSE: The evolution of running-specific prostheses has empowered athletes with lower extremity amputations to run farther and faster than previously thought possible; but running with proper mechanics is still paramount to an injury-free, active lifestyle. The purpose of this case report was to describe the successful alteration of intact limb mechanics from a Rearfoot Striking (RFS) to a Non-Rearfoot Striking (NRFS) pattern in an individual with a knee disarticulation amputation, the associated reduction in Average Vertical Loading Rate (AVLR), and the improvement in functional performance following the intervention...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28895388/probiotic-strains-as-the-element-of-nutritional-profile-in-physical-activity-%C3%A2-new-trend-or-better-sports-results
#7
REVIEW
Joanna Smarkusz, Lucyna Ostrowska, Katarzyna Witczak-Sawczuk
A diet, individually customized to the needs of sportsmen and sportswomen prepares them better for competition and achievement of better sports results. However, disorders of the gastrointestinal tract and frequently recurrent upper respiratory tract infections pose a common problem observed among athletes of disciplines such as triathlon, cycling and marathon. Diarrhea, splashing in the intestines or gastrointestinal bleeding make it difficult to start and win in the race. Recently researchers have paid special attention to the therapeutic effect of probiotic strains on the human body...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28745470/effects-of-taurine-on-markers-of-muscle-damage-inflammatory-response-and-physical-performance-in-triathletes
#8
Bryan S Martinez Galan, Flavia Giolo de Carvalho, Priscila Carvalho Santos, Ronaldo Bucken Gobbi, Carlos Kalva-Filho, Marcelo Papoti, Adelino Sanchez Silva, Ellen C Freitas
BACKGROUND: The practice of prolonged exercise with high intensity, as seen in triathlon training, can cause physiological imbalances that might result in muscle fatigue, muscle damage and changes in systemic inflammatory response, thus reduce the athletes physical performance, therefore, both adequate total caloric and macronutrient intake also the use of a specific ergogenic aid, as taurine supplementation would be an alternative to prevent inflammation and muscle damage. In order to verify the effects of 8 weeks of taurine and chocolate milk supplementation, markers of muscle damage, inflammation, and aerobic capacity were quantified in triathletes...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28696992/triathlon-medical-coverage-a-guide-for-medical-directors
#9
Chad A Asplund, Thomas K Miller, Lawrence Creswell, Andrew Getzin, Andrew Hunt, John Martinez, Jason Diehl, William D Hiller, Paul Berlin
Interest and participation in triathlon has grown rapidly over the past 20 yr and with this growth, there has been an increase in the number of new events. To maximize the safety of participation, triathlons require medical directors to plan and oversee medical care associated with event participation. Provision of proper medical care requires knowledge of staffing requirements, common triathlon medical conditions, impact of course design, communication skill, and a familiarity of administrative requirements...
July 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28696986/fueling-the-triathlete-evidence-based-practical-advice-for-athletes-of-all-levels
#10
Andrew R Getzin, Cynthia Milner, Marie Harkins
Triathletes need to effectively fuel during training and racing to maximize their potential for success. While most research on fueling has focused on elite male triathletes, triathlon participation encompasses a broader demographic of racers ranging from those with aspirations of winning to those whose goals are completion. Carbohydrate is the primary macronutrient for fueling endurance activities. Athletes can usually tolerate 60 to 90 mg·h in the form of multiple different carbohydrate sources. Athletes should drink as thirst dictates and consider sodium replacement of sweat loss especially in individuals with a history of exercise-associated muscle cramps...
July 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28628968/performance-trends-in-age-group-triathletes-in-the-olympic-distance-triathlon-at-the-world-championships-2009-2014
#11
Martin Wonerow, Christoph Alexander Rüst, Pantelis Theodoros Nikolaidis, Thomas Rosemann, Beat Knechtle
Performance trends in elite triathletes competing in age group classes have been investigated for Ironman triathlon in ‘Ironman Hawaii’ but not for short distance triathletes competing at international level in events such as the Olympic distance triathlon at the World Championships. The aim of the present study was to evaluate participation and performance trends of age group triathletes competing in the Olympic distance triathlon at the International Triathlon Union (ITU) World Championships 2009-2014...
June 30, 2017: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/28542004/do-dynamic-fat-and-fat-free-mass-changes-follow-theoretical-driven-rules-in-athletes
#12
Analiza M Silva, Catarina N Matias, Diana A Santos, Paulo M Rocha, Cláudia S Minderico, Diana Thomas, Steven B Heymsfield, Luís B Sardinha
INTRODUCTION: Maximizing fat mass (FM) loss while preserving or increasing fat-free mass (FFM) is a central goal for athletic performance but the composition of body weight (BW) changes over time with training are largely unknown. PURPOSE: We aimed to analyze FM and FFM contributions to BW changes and to test if these contributions follow established rules and predictions over one athletic season. METHODS: Seventy athletes (42 men; handball, volleyball, basketball, triathlon, and swimming) were evaluated from the beginning to the competitive stage of the season and were empirically divided into those who lost (n = 20) or gained >1...
October 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28507970/a-new-technique-for-surgical-treatment-of-proximal-hamstring-tendinopathy-in-a-triathlon-athlete
#13
Lincoln Paiva Costa, Antônio Augusto Guimarães Barros, Carlos Cesar Vassalo, Bertrand Sonnery-Cottet, Victor Atsushi Kasuya Barbosa, Eduardo Frois Temponi
INTRODUCTION: Proximal hamstring tendinopathy (PHT) is the result of chronic overload caused by repetitive eccentric contraction. Surgical treatment becomes an option for patients with chronic symptoms that do not respond to conservative treatment. CASE REPORT: This report describes a case of a 48-year-old man, an amateur triathlete, with deep gluteal pain in the left hip for 12 months, leading to a decline in sports performance. Magnetic resonance imaging revealed abnormalities that suggested a PHT...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28498220/patient-presentations-and-medical-logistics-at-full-and-half-ironman-distance-triathlons
#14
Sheila A Turris, Adam Lund, Ron R Bowles, Michael Camporese, Tom Green
We describe logistical challenges, illness/injury rates, as well as medical and ambulance transfer rates (ATR) at an annual large-scale half/full triathlon in a remote location. Prospective observational study; registry data. Data on patient presentation rates, percentage of patients transferred by ambulance, transfer to hospital rates (TTHR), ATR, and medical usage rates were collected and analyzed. In total, 1923 athletes participated in the 2016 triathlon (1404 in the full-length race and 519 in the half) and 181 patient encounters were documented...
May 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28473024/-prehospital-arterial-blood-gas-analysis-after-collapse-connected-to-triathlon-participation
#15
Asbjørn Ettrup-Christensen, Louise Amstrup-Hansen, Stine T Zwisler
Long-distance athletes are at risk of serious fluid and electrolyte disturbances, such as hypernatraemia (dehydration). Recently, cases of serious morbidity have been reported, due to acute exercise-associated hyponatraemia, which can advance to encephalopathy. An arterial blood gas analysis (ABG) was drawn from collapsed athletes at the championship of full-distance triathlon 2015, and different electrolyte imbalances were found. Our findings show that prehospital ABG can assist in differentiating the cause of collapse, and presumably, targeted treatment can be initiated already on scene...
May 1, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28350714/multiple-transportable-carbohydrate-effect-on-long-distance-triathlon-performance
#16
David S Rowlands, Stuart D Houltham
The ingestion of multiple (2:1 glucose-fructose) transportable carbohydrate in beverages at high rates (>78 g·h) during endurance exercise enhances exogenous carbohydrate oxidation, fluid absorption, gut comfort, and performance relative to glucose alone. However, during long-distance endurance competition, athletes prefer a solid-gel-drink format, and the effect size of multiple-transportable carbohydrate is unknown. PURPOSE: This study aimed to determine the effect of multiple-transportable carbohydrate on triathlon competition performance when ingested within bars, gels, and drinks...
August 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28340944/snapping-knee-syndrome-caused-by-semitendinosus-and-semimembranosus-tendons-a-case-report
#17
Nikolaus von Dercks, Jan Dirk Theopold, Bastian Marquass, Christoph Josten, Pierre Hepp
We report the case of a 24-year-old female triathlon athlete with a snapping syndrome of both the distal semimembranosus and the semitendinosus tendon which has not been described so far. The semitendinosus tendon was harvested whereupon snapping has diminished. Tenoscopy and digital palpation showed the semimembranosus tendon to cause the snapping, as well. A careful step-by-step release of the anterior insertion of the tendon was performed with the result of a snapping-free range of motion of the patient's knee...
December 2016: Knee
https://www.readbyqxmd.com/read/28303338/blood-glucose-kinetics-and-physiological-changes-in-a-type-1-diabetic-finisher-of-the-ultraman-triathlon-a-case-study
#18
Christopher W Bach, Daniel A Baur, William S Hyder, Michael J Ormsbee
PURPOSE: To investigate the blood glucose kinetics and physiological effects experienced by a type 1 diabetic (T1D) finisher of a 3-day, multi-stage ultra endurance triathlon consisting of a 10 km swim and 144.8 km bike (stage 1), a 275.4 km bike (stage 2), and an 84.4 km run (stage 3). METHODS: The athlete self-monitored blood glucose (SMBG) levels via fingerstick blood draw and hand-held glucometer. Researchers evaluated blood glucose kinetics via a continuous glucose monitoring device...
May 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28295487/sperm-dna-fragmentation-as-a-result-of-ultra-endurance-exercise-training-in-male-athletes
#19
D Vaamonde, C Algar-Santacruz, A Abbasi, J M García-Manso
Intensive sports practice seems to exert negative effects on semen parameters; in order to assess these effects, the objective of this study was to assess semen, including DNA fragmentation, and hormone parameters in elite triathletes. Twelve high-level triathletes preparing for a National Triathlon Championship participated in the study. The qualitative sperm parameters analysed were volume, sperm count, motility, morphology and DNA fragmentation; when needed, additional testing was performed. Assessed hormones were testosterone (T), cortisol (C) and testosterone-cortisol ratio (T/C)...
March 15, 2017: Andrologia
https://www.readbyqxmd.com/read/28259848/calf-muscle-strain-injuries-in-sport-a-systematic-review-of-risk-factors-for-injury
#20
REVIEW
Brady Green, Tania Pizzari
OBJECTIVE: To systematically review the literature to identify risk factors for calf strain injury, and to direct future research into calf muscle injuries. DESIGN: Systematic review DATA SOURCES: Database searches conducted for Medline, CINAHL, EMBASE, AMED, AUSPORT, SportDiscus, PEDro and Cochrane Library. Manual reference checks, ahead of press searches, citation tracking. From inception to June 2016. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Studies evaluating and presenting data related to intrinsic or extrinsic risk factors for sustaining future calf injury...
August 2017: British Journal of Sports Medicine
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