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https://www.readbyqxmd.com/read/29775483/ldha-gene-is-associated-with-pigeon-survivability-during-racing-competitions
#1
Sherif Ramadan, Takeshi Miyake, Junichi Yamaura, Miho Inoue-Murayama
Pigeon racing is a popular sport worldwide. Pigeons are under continuous selection to improve speed, spatial orientation, and endurance during long flights. However, numerous genetic and non-genetic factors affect survivability and homing ability, making such traits difficult for breeders to control. Polymorphisms in the lactate dehydrogenase A gene (LDHA) likely affects pigeon racing and homing abilities, due to its role in physical and mental performance. Additionally, the adenylate cyclase activating polypeptide 1 gene (ADCYAP1) has been associated with physiological and behavioral shifts that occur during avian migration...
2018: PloS One
https://www.readbyqxmd.com/read/29775379/decision-to-return-to-sport-participation-after-anterior-cruciate-ligament-reconstruction-part-ii-self-reported-and-functional-performance-outcomes
#2
Jennifer L Werner, Julie P Burland, Carl G Mattacola, Jenny Toonstra, Robert A English, Jennifer S Howard
CONTEXT:   Anterior cruciate ligament (ACL) reconstruction (ACLR) is the most commonly used method for helping athletes regain function and return to preinjury activity levels after ACL injury. Outcomes after ACLR have suggested that athletes return to a level of function that would support a return to sport participation; however, in a recent meta-analysis, pooled return rates were only 55%. It is unclear whether this discrepancy is a result of functional impairments. OBJECTIVE:   To compare patient-reported outcomes (PROs), dynamic balance, dynamic functional performance, strength, and muscular endurance in athletes who have returned to sport (RTS) and athletes who have not returned to sport (NRTS) after ACLR...
May 18, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29773412/athlete-s-heart-is-the-morganroth-hypothesis-obsolete
#3
Mark J Haykowsky, T Jake Samuel, Michael D Nelson, Andre La Gerche
In 1975, Morganroth and colleagues reported that the increased left ventricular (LV) mass in highly trained endurance athletes versus nonathletes was primarily due to increased end-diastolic volume while the increased LV mass in resistance trained athletes was solely due to an increased LV wall thickness. Based on the divergent remodelling patterns observed, Morganroth and colleagues hypothesised that the increased "volume" load during endurance exercise may be similar to that which occurs in patients with mitral or aortic regurgitation while the "pressure" load associated with performing a Valsalva manoeuvre (VM) during resistance exercise may mimic the stress imposed on the heart by systemic hypertension or aortic stenosis...
May 1, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29762691/diagnostic-accuracy-of-post-acth-challenge-salivary-cortisol-concentrations-for-identifying-horses-with-equine-glandular-gastric-disease
#4
Fay J Sauer, Rupert M Bruckmaier, Alessandra Ramseyer, Beatriz Vidondo, Milena D Scheidegger, Vinzenz Gerber
The aims of this study were to better characterize the adrenal response to i.v. adrenocorticotropic hormone (ACTH) in horses with and without gastric disease and to validate and simplify the ACTH stimulation test by determining the diagnostic accuracy of six consecutive sampling time points after ACTH administration for equine glandular gastric disease (EGGD) and equine squamous gastric disease (ESGD). Twenty-six endurance and eventing horses without clinical disease [Sport Horse Population (SHP)] and an independent population of 62 horses [General Population (GP)] were grouped by gastroscopic findings (no/mild vs...
May 12, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29761651/mr%C3%AF-inside-the-meat-pie
#5
John Massie, Michael Kean, Tim Cain
Meat pies have been adopted as one of Australia's favourite foods, and considered an icon by many. The hand-held convenience of the pie has made them a culinary necessity while watching sport, also beloved in Australia. An enduring question about the meat pie is what exactly is inside. This can be difficult to ascertain by digital, ocular or oral exploration. In this study we use MR imaging to study the contents of some of Australia's best loved pies.
May 14, 2018: Journal of Medical Imaging and Radiation Oncology
https://www.readbyqxmd.com/read/29757049/prevalence-of-indicators-of-low-energy-availability-in-elite-female-sprinters
#6
Jennifer Sygo, Alexandra M Coates, Erik Sesbreno, Margo L Mountjoy, Jamie F Burr
Low energy availability (LEA), and subsequent relative energy deficiency in sport (RED-S), has been observed in endurance, aesthetic, and team sport athletes, with limited data on prevalence in athletes in short-burst activities such as sprinting. We examined prevalence of signs and symptoms of LEA in elite female sprinters at the start of the training season (PRE), and at the end of a 5-month indoor training period (POST). Four of 13 female sprinters (31%) presented at PRE testing with at least one primary (amenorrhea, low BMD, low FSH, LH, or estradiol, RMR ≤ 29kcal/kg FFM, Low Energy Availability in Females Questionnaire (LEAF-Q) score ≥8) and one secondary indicator of LEA (fasting blood glucose < 4mmol/L, free triiodothyronine < 3...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29757047/development-and-implementation-of-a-nutrition-knowledge-questionnaire-for-ultra-endurance-athletes
#7
Claire Blennerhassett, Lars R McNaughton, Lorcan Cronin, S Andy Sparks
The nutritional intake of ultra-endurance athletes is often poorly matched with the requirements of the sport. Nutrition knowledge is a mediating factor to food choice that could correct such imbalances. Therefore, the purpose of this study was to develop and validate a questionnaire to assess the nutrition knowledge of ultra-endurance athletes. Nutritional knowledge was assessed using a modified sports nutrition questionnaire (ULTRA-Q). Four independent assessors with specialist sports nutrition knowledge confirmed the content validity of the ULTRA-Q...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29741654/assessment-of-muscular-fitness-as-a-predictor-of-flight-duty-limitation
#8
Tuomas Honkanen, Matti Mäntysaari, Janne Avela, Heikki Kyröläinen, Tuomo Leino
Introduction: The high acceleration (Gz) exposure among military pilots flying fighter aircraft has been associated with an increased risk for cervical and lumbar disorders. It has been suggested that an adequate level of physical performance could reduce the risk of experiencing these disorders. The Finnish Air Force has for several years used aerobic (bicycle ergometer) and muscular fitness tests (battery of five tests) in the selection process of military pilot candidates in order to evaluate their physical fitness level...
May 8, 2018: Military Medicine
https://www.readbyqxmd.com/read/29740341/circulating-mirnas-as-putative-biomarkers-of-exercise-adaptation-in-endurance-horses
#9
Katia Cappelli, Stefano Capomaccio, Andrea Viglino, Maurizio Silvestrelli, Francesca Beccati, Livia Moscati, Elisabetta Chiaradia
Endurance exercise induces metabolic adaptations and has recently been reported associated with the modulation of a particular class of small noncoding RNAs, microRNAs, that act as post-transcriptional regulators of gene expression. Released into body fluids, they termed circulating miRNAs, and they have been recognized as more effective and accurate biomarkers than classical serum markers. This study examined serum profile of miRNAs through massive parallel sequencing in response to prolonged endurance exercise in samples obtained from four competitive Arabian horses before and 2 h after the end of competition...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29730785/may-the-force-be-with-you-why-resistance-training-is-essential-for-subjects-with-type-2-diabetes-mellitus-without-complications
#10
REVIEW
Roberto Codella, Marta Ialacqua, Ileana Terruzzi, Livio Luzi
Physical activity, together with diet and pharmacological therapy, represents one of the three cornerstones in type 2 diabetes mellitus treatment and care. The therapeutic appeal of regular physical activity stems from: (i) its non-pharmacological nature; (ii) its beneficial effects on the metabolic risk factors associated with diabetes complications; (iii) its low costs. Evidence accumulated in the last years suggests that aerobic training-endurance training-constitutes a safe modality of intervention, achievable, and effective in diabetes treatment, whenever it is not limited by comorbidities...
May 5, 2018: Endocrine
https://www.readbyqxmd.com/read/29730745/the-heart-of-the-matter-years-saved-from-cardiovascular-and-cancer-deaths-in-an-elite-athlete-cohort-with-over-a-century-of-follow-up
#11
Juliana Antero-Jacquemin, Maja Pohar-Perme, Grégoire Rey, Jean-François Toussaint, Aurélien Latouche
To quantify the years of life saved from cardiovascular (CVD), cancer and overall deaths among elite athletes according to their main type of physiological effort performed in the Olympic Games. All French athletes participating in the Games from 1912 to 2012, with vital status validated and cause of death (if concerned) identified by the national registries were included (n = 2814, 455 died) and classified according to 6 groups of effort: POWER (continuous effort < 45 s); INTERMEDIATE (45 s ≤ continuous effort < 600 s); ENDURANCE (continuous effort ≥ 600 s); POLYVALENT (participating in different events entering different classifications), INTERMITTENT (intermittent effort, i...
May 5, 2018: European Journal of Epidemiology
https://www.readbyqxmd.com/read/29722250/the-effects-of-8-weeks-of-two-different-training-methods-on-on-sight-lead-climbing-performance
#12
Marc Philippe, Ingo Filzwieser, Veronika Leichtfried, Cornelia Blank, Simon Haslinger, Johannes Fleckenstein, Wolfgang Schobersberger
BACKGROUND: Despite climbing being an increasingly popular sporting pursuit, there have been very few scientific evaluations of appropriate training methods for competitive climbers. The aim of this study was to investigate the effects of an 8-week climbing-specific muscular hypertrophy (MH) or muscular endurance (ME) resistance training program on the on-sight lead climbing performance in a similar setting to a world cup. METHODS: Twenty-three elite male and female climbers (age: 25...
May 2, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29720949/active-recovery-after-high-intensity-interval-training-does-not-attenuate-training-adaptation
#13
Thimo Wiewelhove, Christoph Schneider, Alina Schmidt, Alexander Döweling, Tim Meyer, Michael Kellmann, Mark Pfeiffer, Alexander Ferrauti
Objective: High-intensity interval training (HIIT) can be extremely demanding and can consequently produce high blood lactate levels. Previous studies have shown that lactate is a potent metabolic stimulus, which is important for adaptation. Active recovery (ACT) after intensive exercise, however, enhances blood lactate removal in comparison with passive recovery (PAS) and, consequently, may attenuate endurance performance improvements. Therefore, the aim of this study was to examine the influence of regular ACT on training adaptations during a HIIT mesocycle...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29710835/eicosahexanoic-acid-epa-and-docosahexanoic-acid-dha-in-muscle-damage-and-function
#14
REVIEW
Eisuke Ochi, Yosuke Tsuchiya
Nutritional supplementation not only helps in improving and maintaining performance in sports and exercise, but also contributes in reducing exercise fatigue and in recovery from exhaustion. Fish oil contains large amounts of omega-3 fatty acids, eicosapentaenoic acid (EPA; 20:5 n-3) and docosahexaenoic acid (DHA; 22:6 n-3). It is widely known that omega-3 fatty acids are effective for improving cardiac function, depression, cognitive function, and blood as well as lowering blood pressure. In the relationship between omega-3 fatty acids and exercise performance, previous studies have been predicted improved endurance performance, antioxidant and anti-inflammatory responses, and effectivity against delayed-onset muscle soreness...
April 29, 2018: Nutrients
https://www.readbyqxmd.com/read/29706494/is-there-a-role-for-genes-in-exercise-induced-atrial-cardiomyopathy
#15
REVIEW
Diane Fatkin, Charles D Cox, Inken G Huttner, Boris Martinac
In endurance athletes, prolonged high intensity exercise participation can have deleterious effects on the myocardium with subsequent structural and electrical remodelling. In a subset of athletes, there is a predilection for atrial involvement and the risk of atrial fibrillation (AF) is increased. The mechanisms underpinning exercise-induced atrial cardiomyopathy have yet to be fully elucidated and the contribution of an individual's genetic makeup is unknown. Some athletes may have rare genetic variants that are sufficient to cause AF irrespective of exercise exposure...
April 9, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29663075/comparison-of-running-and-cycling-economy-in-runners-cyclists-and-triathletes
#16
Wannes Swinnen, Shalaya Kipp, Rodger Kram
PURPOSE: Exercise economy is one of the main physiological factors determining performance in endurance sports. Running economy (RE) can be improved with running-specific training, while the improvement of cycling economy (CE) with cycling-specific training is controversial. We investigated whether exercise economy reflects sport-specific skills/adaptations or is determined by overall physiological factors. METHODS: We compared RE and CE in 10 runners, 9 cyclists and 9 triathletes for running at 12 km/h and cycling at 200 W...
April 16, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29659723/age-related-slowing-of-contractile-properties-differs-between-power-endurance-and-non-athletes-a-tensiomyographic-assessment
#17
Boštjan Šimunic, Rado Pišot, Jörn Rittweger, Hans Degens
Although master athletes maintain high levels of physical activity, they also suffer from an age-related decline in skeletal muscle function. There are indications of disproportional age- and physical inactivity-induced muscle wasting between muscles. Tensiomyography is a non-invasive tool that has been used to study the effects of a variety of sports on the contraction time (Tc) in different skeletal muscles. The aim of this cross-sectional study was to assess age-related changes in the Tc of the vastus lateralis, gastrocnemius medialis and biceps femoris muscles with Tensiomyography in older non-athletes (age = 62...
April 12, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29648505/abstracts-from-the-5th-annual-congress-on-medicine-science-in-ultra-endurance-sports-may-9-10-2018-castell%C3%A3-de-la-plana-spain
#18
(no author information available yet)
No abstract text is available yet for this article.
April 12, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29624450/national-athletic-trainers-association-position-statement-evaluation-management-and-outcomes-of-and-return-to-play-criteria-for-overhead-athletes-with-superior-labral-anterior-posterior-injuries
#19
Lori A Michener, Jeffrey S Abrams, Kellie C Huxel Bliven, Sue Falsone, Kevin G Laudner, Edward G McFarland, James E Tibone, Charles A Thigpen, Timothy L Uhl
OBJECTIVE:   To present recommendations for the diagnosis, management, outcomes, and return to play of athletes with superior labral anterior-posterior (SLAP) injuries. BACKGROUND:   In overhead athletes, SLAP tears are common as either acute or chronic injuries. The clinical guidelines presented here were developed based on a systematic review of the current evidence and the consensus of the writing panel. Clinicians can use these guidelines to inform decision making regarding the diagnosis, acute and long-term conservative and surgical treatment, and expected outcomes of and return-to-play guidelines for athletes with SLAP injuries...
March 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29621885/improvement-in-exercise-capacity-and-delayed-anaerobic-metabolism-induced-by-far-infrared-emitting-garments-in-active-healthy-subjects-a-pilot-study
#20
Valentina Mantegazza, Mauro Contini, Maurizia Botti, Ada Ferri, Francesca Dotti, Pierluigi Berardi, Piergiuseppe Agostoni
Background Far-infrared-emitting garments have several biological properties including the capability to increase blood perfusion in irradiated tissues. Design The aim of the study was to evaluate whether far-infrared radiation increases exercise capacity and delays anaerobic metabolism in healthy subjects. Methods With a double-blind, crossover protocol, a maximal cardiopulmonary exercise test was performed in 20 volunteers, wearing far-infrared or common sport clothes, identical in texture and colour. Results Comparing far-infrared with placebo garments, higher oxygen uptake at peak of exercise and longer endurance time were observed (peak oxygen uptake 38...
January 1, 2018: European Journal of Preventive Cardiology
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