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https://www.readbyqxmd.com/read/28332025/endurance-aerobic-high-intensity-and-repeated-sprint-cycling-performance-is-unaffected-by-normobaric-live-high-train-low-a-double-blind-placebo-controlled-cross-over-study
#1
Jacob Bejder, Andreas Breenfeldt Andersen, Rie Buchardt, Tanja Hultengren Larsson, Niels Vidiendal Olsen, Nikolai Baastrup Nordsborg
The aim was to investigate whether 6 weeks of normobaric "Live High-Train Low" (LHTL) using altitude tents affect highly trained athletes incremental peak power, 26-km time-trial cycling performance, 3-min all-out performance, and 30-s repeated sprint ability. In a double-blinded, placebo-controlled cross-over design, seven highly trained triathletes were exposed to 6 weeks of normobaric hypoxia (LHTL) and normoxia (placebo) for 8 h/day. LHTL exposure consisted of 2 weeks at 2500 m, 2 weeks at 3000 m, and 2 weeks at 3500 m...
March 22, 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
#2
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/28251402/dietary-nitrate-supplementation-enhances-short-but-not-longer-duration-running-time-trial-performance
#3
Oliver Michael Shannon, Matthew John Barlow, Lauren Duckworth, Emily Williams, Georgina Wort, David Woods, Mario Siervo, John Paul O'Hara
PURPOSE: This study evaluated the effects of dietary nitrate (NO3(-)) supplementation on physiological functioning and exercise performance in trained runners/triathletes conducting short and longer-distance treadmill running time-trials (TT). METHOD: Eight trained male runners or triathletes completed four exercise performance tests comprising a 10 min warm up followed by either a 1500 or 10,000 m treadmill TT. Exercise performance tests were preceded 3 h before the exercise by supplementation with either 140 ml concentrated nitrate-rich (~12...
March 1, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28240713/the-cycling-power-profile-characteristics-of-national-level-junior-triathletes
#4
Christopher J Stevens, Kyle J M Bennett, Andrew R Novak, Aden B Kittel, Ben J Dascombe
With the draft-legal rule recently introduced to junior triathlon competition, it has become difficult to assess cycling performance through race results. Therefore, this study assessed the cycling power profile characteristics of national level junior triathletes to assist with physical assessment and program design. Thirteen male (17.0 ± 1.0 yr) and eleven female (17.2 ± 1.3 yr) national level junior triathletes completed a cycling power profile that consisted of maximal intervals that lasted 6, 15, 30, 60, 240 and 600 seconds in duration...
February 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28236712/a-biomechanical-evaluation-of-the-combined-elevation-test
#5
Sam Allen, Gemma Phillips, Steve McCaig
OBJECTIVES: To evaluate biomechanically the relationships between the outcome of the Combined Elevation Test, its component joint motions, and thoracic spine angles. DESIGN: Cross-sectional study. SETTING: Laboratory. PARTICIPANTS: 18 elite swimmers and triathletes (11 males and 7 females). MAIN OUTCOME MEASURES: Combined Elevation Test outcome in forehead and chin positions. Individual joint contributions to test outcome...
November 12, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28230417/aging-and-half-ironman-performance
#6
M J Stones, Adric Hartin
Background/Study Context: Previous research on triathlon performance analyzed age trends for the Top Ten or Top Five finishers in world championship or national races at Olympic, Half-Ironman, and Ironman distances. The findings indicated higher age declines and/or earlier onset of decline in swimming and running than cycling. However, the designs of those studies took no account of possible differences between cross-sectional and longitudinal trends (i.e., cohort differences versus age changes). METHODS: This study analyzed performance times over the inaugural 5 years of the Half-Ironman world championship held in Clearwater, Florida, from 2006 to 2010...
March 2017: Experimental Aging Research
https://www.readbyqxmd.com/read/28225523/the-age-related-performance-decline-in-ironman-triathlon-starts-earlier-in-swimming-than-in-cycling-and-running
#7
Ilja Käch, Christoph A Rüst, Pantelis T Nikolaidis, Thomas Rosemann, Beat Knechtle
In Ironman triathlon, the number of overall male and female finishers increased in the last 30 years, while an improvement in performance has been reported. Studies concluding these numbers only analysed the top ten athletes per age group instead of all finishers, therefore a selection bias might have occurred. The aim of the present study was to investigate participation, performance and the age-related performance decline of all pro and age group triathletes ranked in all Ironman triathlons held worldwide between 2002 and 2015...
February 21, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28224882/social-physique-anxiety-mental-health-and-exercise-analyzing-the-role-of-basic-psychological-needs-and-psychological-inflexibility
#8
Manuel Alcaraz-Ibáñez, Álvaro Sicilia, Rafael Burgueño
This study aimed to determine the usefulness of integrating basic psychological needs theory (BPNT) and relational frames theory (RFT) in order to explain the effects of social physique anxiety (SPA) - in the context of exercise - on exercisers' mental health. A total of 296 recreational cyclists and triathletes (100% males) aged 18 to 60 years old (M age = 35.65, SD = 9.49) completed a multi-section questionnaire assessing the target variables. Two models of structural equations with multiple mediators were tested using 5000 bootstrap samples...
February 22, 2017: Spanish Journal of Psychology
https://www.readbyqxmd.com/read/28212266/individual-patterns-in-blood-borne-indicators-of-fatigue-trait-or-chance
#9
Ross Julian, Tim Meyer, Hugh H K Fullagar, Sabrina Skorski, Mark Pfeiffer, Michael Kellmann, Alexander Ferrauti, Anne Hecksteden
Julian, R, Meyer, T, Fullagar, HHK, Skorski, S, Pfeiffer, M, Kellmann, M, Ferrauti, A, and Hecksteden, A. Individual patterns in blood-borne indicators of fatigue-trait or chance. J Strength Cond Res 31(3): 608-619, 2017-Blood-borne markers of fatigue such as creatine kinase (CK) and urea (U) are widely used to fine-tune training recommendations. However, predictive accuracy is low. A possible explanation for this dissatisfactory characteristic is the propensity of athletes to react to different patterns of fatigue indicators (e...
March 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28203462/adherence-to-follow-up-recommendations-by-triathlon-competitors-receiving-event-medical-care
#10
Jeremy D Joslin, Jarem B Lloyd, Nikoli Copeli, Derek R Cooney
Introduction. We sought to investigate triathlete adherence to recommendations for follow-up for participants who received event medical care. Methods. Participants of the 2011 Ironman Syracuse 70.3 (Syracuse, NY) who sought evaluation and care at the designated finish line medical tent were contacted by telephone approximately 3 months after the initial encounter to measure adherence with the recommendation to seek follow-up care after event. Results. Out of 750 race participants, 35 (4.6%) athletes received event medical care...
2017: Emergency Medicine International
https://www.readbyqxmd.com/read/28174540/the-influence-of-mid-event-deception-on-psychophysiological-status-and-pacing-can-persist-across-consecutive-disciplines-and-enhance-self-paced-multi-modal-endurance-performance
#11
Daniel Taylor, Mark F Smith
Purpose: To examine the effects of deceptively aggressive bike pacing on performance, pacing, and associated physiological and perceptual responses during simulated sprint-distance triathlon. Methods: Ten non-elite, competitive male triathletes completed three simulated sprint-distance triathlons (0.75 km swim, 500 kJ bike, 5 km run), the first of which established personal best "baseline" performance (BL). During the remaining two trials athletes maintained a cycling power output 5% greater than BL, before completing the run as quickly as possible...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28153693/breathing-parameters-associated-to-two-different-external-nasal-dilator-strips-in-endurance-athletes
#12
Giancarlo Ottaviano, Andrea Ermolao, Ennio Nardello, Flavio Muci, Vittorio Favero, Marco Zaccaria, Lorenzo Favero
OBJECTIVE: The aim of the study was to investigate and compare the effects of two different external nasal dilator strips (ENDS) on nasal respiratory flow, maximal oxygen uptake (VO2max), nasal VO2max, time to exhaustion and subjective nasal obstruction in adult triathletes participating in exhaustive, controlled physical exercise tests. METHODS: Thirteen healthy triathletes without nasal symptoms were recruited and randomly tested in three different conditions: without ENDS, wearing the Breathe Right(®) dilator strip and wearing the Master-aid Roll-flex(®) strip...
January 30, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28149367/triathlon-wetsuit-removal-strategy-physiological-cost-of-running-with-a-wetsuit
#13
Mihaela Ciulei, Aaron Prado, James Navalta, John A Mercer
Triathletes exiting the swim portion of an event have to decide on how and when to take a wetsuit off (if worn). The purpose of this study was to determine the physiological cost of running while not using a wetsuit, carrying a wetsuit, wearing a wetsuit halfway down or wearing a wetsuit fully up. Participants (n = 20, 30.9 ± 8.7 yrs, 1.71 ± 0.08 m, 71.6 ± 9.5 kg) completed four 5 min running conditions: 1) not wearing the wetsuit, 2) wearing the wetsuit fully up, 3) wearing the wetsuit halfway down, and 4) carrying the wetsuit...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28138315/effect-of-mouth-rinsing-and-ingestion-of-carbohydrate-solutions-on-mood-and-perceptual-responses-during-exercise
#14
Ajmol Ali, Catherine Moss, Michelle Ji Yeon Yoo, Alanah Wilkinson, Bernhard H Breier
BACKGROUND: The aim of this study was to investigate whether mouth rinsing or ingesting carbohydrate (CHO) solutions impact on perceptual responses during exercise. METHODS: Nine moderately trained male cyclists underwent a 90-min glycogen-reducing exercise, and consumed a low CHO meal, prior to completing an overnight fast. A 1-h cycle time trial was performed the following morning. Four trials, each separated by 7 days, were conducted in a randomized, counterbalanced study design: 15% CHO mouth rinse (CHOR), 7...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28121799/compensatory-changes-in-energy-balance-regulation-over-one-athletic-season
#15
Analiza M Silva, Catarina N Matias, Diana A Santos, Diana Thomas, Anja Bosy-Westphal, Manfred J Müller, Steven B Heymsfield, Luís B Sardinha
PURPOSE: Mechanisms in energy balance (EB) regulation may include compensatory changes in energy intake (EI) and metabolic adaption (MA) but information is unavailable in athletes who often change EB components. We aim to investigate EB regulation compensatory mechanisms over one athletic season. METHODS: Fifty-seven athletes (39 males/18 females; handball, volleyball, basketball, triathlon, and swimming) were evaluated from the beginning to the competitive-phase of the season...
January 24, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28121183/betalain-rich-concentrate-supplementation-improves-exercise-performance-and-recovery-in-competitive-triathletes
#16
RANDOMIZED CONTROLLED TRIAL
Cristhian F Montenegro, David A Kwong, Zev A Minow, Brian A Davis, Christina F Lozada, Gretchen A Casazza
We aimed to determine the effects of a betalain-rich concentrate (BRC) of beetroots, containing no sugars or nitrates, on exercise performance and recovery. Twenty-two (9 men and 13 women) triathletes (age, 38 ± 11 years) completed 2 double-blind, crossover, randomized trials (BRC and placebo) starting 7 days apart. Each trial was preceded by 6 days of supplementation with 100 mg·day(-1) of BRC or placebo. On the 7th day of supplementation, exercise trials commenced 120 min after ingestion of 50 mg BRC or placebo and consisted of 40 min of cycling (75 ± 5% maximal oxygen consumption) followed by a 10-km running time trial (TT)...
February 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28031772/the-chronotype-of-elite-athletes
#17
Michele Lastella, Gregory D Roach, Shona L Halson, Charli Sargent
The aims of this study were (i) to compare the chronotype distribution of elite athletes to a young adult population and (ii) to determine if there was a tendency for athletes to select and/or participate in sports which suited their chronotype. A total of 114 elite athletes from five sports (cricket, cycling, hockey, soccer and triathlon) participated in this study. The participants' chronotype, sleepiness, sleep satisfaction and sleep quality were determined using the Horne and Östberg Morningness and Eveningness questionnaire, the Epworth Sleepiness Scale and questions concerning their sleep satisfaction and quality...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/27999729/a-non-operative-approach-to-the-management-of-chronic-exertional-compartment-syndrome-in-a-triathlete-a-case-report
#18
Cristiana Kahl Collins, Brad Gilden
BACKGROUND & PURPOSE: Chronic Exertional Compartment Syndrome (CECS) causes significant exercise related pain secondary to increased intra-compartmental pressure (ICP) in the lower extremities. CECS is most often treated with surgery with minimal information available on non-operative approaches to care. This case report presents a case of CECS successfully managed with physical therapy. STUDY DESIGN: Case report. CASE DESCRIPTION: A 34-year-old competitive triathlete experienced bilateral anterior and posterior lower leg pain measured with a numerical pain rating scale of 7/10 at two miles of running...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27988251/upper-extremity-deep-vein-thrombosis-in-a-triathlete-again-intense-endurance-exercise-as-a-thrombogenic-risk
#19
Ignacio Sancho-González, María Vicenta Bonilla-Hernández, David Ibañez-Muñoz, Davinia Vicente-Campos, José López Chicharro
Triathlon followers increase each year and long-distance events have seen major growth worldwide. In the cycling phase, athletes must maintain an aerodynamic posture on the bike for long periods of time. We report a case of a 38-year-old triathlete with symptoms of an axillary vein thrombosis 48h after a long triathlon competition. After 3days of hospitalization with a treatment consisted on enoxaparin anticoagulant and acenocumarol, the patient was discharged with instructions to continue treatment under home hospitalization with acetaminophen...
December 13, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27980158/my-working-week-hannah-jordan
#20
Hannah Jordan
Hannah Jordan is a BVA policy officer, having previously been parliamentary intern to Lord Trees. She is also a triathlete.
December 17, 2016: Veterinary Record
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