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Athlete, training adaptation, monitoring

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https://www.readbyqxmd.com/read/29282696/cardiac-biomarkers-release-in-preadolescent-athletes-after-an-high-intensity-exercise
#1
A Peretti, L Mauri, A Masarin, G Annoni, A Corato, A Maloberti, Cristina Giannattasio, G Vignati
INTRODUCTION: An elevation of cardiac troponins has been described in healthy athletes after endurance exercises. The clinical significance of this increase is unclear and the lack of awareness of this phenomenon may lead to inappropriate management of these subjects. AIM: We sought to determine wether an intensive cycling training could determine a biomarkers elevation. METHODS: We evaluated serum high sensitivity cardiac troponin T, NH(2)-terminal pro-brain natriuretic peptide, CK-MB and CK in 21 healthy male preadolescent athletes (age 9...
December 27, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/29238242/heart-rate-variability-is-a-moderating-factor-in-the-workload-injury-relationship-of-competitive-crossfit%C3%A2-athletes
#2
Sean Williams, Thomas Booton, Matthew Watson, Daniel Rowland, Marco Altini
Heart rate variability (HRV) is a popular tool for monitoring training adaptation and readiness in athletes, but it also has the potential to indicate early signs of somatic tissue overload prior to the onset of pain or fully developed injury. Therefore, the aim of this study was to investigate the interaction between HRV, workloads, and risk of overuse problems in competitive CrossFit™ athletes. Daily resting HRV and workloads (duration × session-RPE) were recorded in six competitive CrossFit™ athletes across a 16 week period...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29187343/an-ehealth-application-of-self-reported-sports-related-injuries-and-illnesses-in-paralympic-sport-pilot-feasibility-and-usability-study
#3
Kristina Fagher, Jenny Jacobsson, Örjan Dahlström, Toomas Timpka, Jan Lexell
BACKGROUND: Sport participation is associated with a risk of sports-related injuries and illnesses, and Paralympic athletes' additional medical issues can be a challenge to health care providers and medical staff. However, few prospective studies have assessed sports-related injuries and illnesses in Paralympic sport (SRIIPS) over time. Advances in mobile phone technology and networking systems offer novel opportunities to develop innovative eHealth applications for collection of athletes' self-reports...
November 29, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/29135639/sleep-and-athletic-performance
#4
Andrew M Watson
Sleep is an essential component of health and well-being, with significant impacts on physical development, emotional regulation, cognitive performance, and quality of life. Along with being an integral part of the recovery and adaptive process between bouts of exercise, accumulating evidence suggests that increased sleep duration and improved sleep quality in athletes are associated with improved performance and competitive success. In addition, better sleep may reduce the risk of both injury and illness in athletes, not only optimizing health but also potentially enhancing performance through increased participation in training...
November 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28993881/maximal-rate-of-heart-rate-increase-correlates-with-fatigue-recovery-status-in-female-cyclists
#5
Maximillian J Nelson, Clint R Bellenger, Rebecca L Thomson, Eileen Y Robertson, Kade Davison, Daniela Schäfer Olstad, Jonathan D Buckley
PURPOSE: Being able to identify how an athlete is responding to training would be useful to optimise adaptation and performance. The maximal rate of heart rate increase (rHRI), a marker of heart rate acceleration has been shown to correlate with performance changes in response to changes in training load in male athletes; however, it has not been established if it also correlates with performance changes in female athletes. METHODS: rHRI and cycling performance were assessed in six female cyclists following 7 days of light training (LT), 14 days of heavy training (HT) and a 10 day taper period...
December 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28948583/a-narrative-review-of-the-physical-demands-and-injury-incidence-in-american-football-application-of-current-knowledge-and-practices-in-workload-management
#6
REVIEW
Toby Edwards, Tania Spiteri, Benjamin Piggott, G Gregory Haff, Christopher Joyce
The sport of American football (AmF) exposes athletes to high-velocity movements and frequent collisions during competition and training, placing them at risk of contact and non-contact injury. Due to the combative nature of the game, the majority of injuries are caused by player contact; however, a significant number are also non-contact soft-tissue injuries. The literature suggests that this mechanism of injury can be prevented through workload monitoring and management. The recent introduction of microtechnology into AmF allows practitioners and coaches to quantify the external workload of training and competition to further understand the demands of the sport...
September 25, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28948538/the-right-heart-acute-and-chronic-issues
#7
REVIEW
Timothy W Churchill, Aaron L Baggish
Cardiovascular remodeling in response to sustained moderate and high-intensity exercise is a well-established phenomenon. Following more than a century of work focused on the left ventricle (LV), remodeling of the right side of the heart has recently become a topic of considerable scientific and clinical interest. Morphologic and functional changes have now been well documented in the right ventricle (RV) after isolated bouts of endurance exercise and in association with long-term sustained training. Although exercise-induced cardiac remodeling is classically viewed as an adaptive, clinically benign process, it has recently been hypothesized that repetitive bouts of intense exercise may trigger pathologic changes in the RV characterized by patchy fibrosis and a predisposition to arrhythmia...
September 25, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28902119/determination-of-vertical-jump-as-a-measure-of-neuromuscular-readiness-and-fatigue
#8
Casey M Watkins, Saldiam R Barillas, Megan A Wong, David C Archer, Ian J Dobbs, Robert G Lockie, Jared W Coburn, Tai T Tran, Lee E Brown
Coaches closely monitor training loads and periodize sessions throughout the season to create optimal adaptations at the proper time. However, only monitoring training loads ignores the innate physiological stress each athlete feels individually. Vertical jump (VJ) is widely used as a measure of lower body power, and has been used in post-match studies to demonstrate fatigue levels. However, no pre-training monitoring via VJ performance has been previously studied. Therefore, the purpose of this study was to determine the sensitivity of VJ as a measure of readiness and fatigue on a daily sessional basis...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28886473/strategies-for-injury-prevention-in-brazilian-football-perceptions-of-physiotherapists-and-practices-of-premier-league-teams
#9
Maurício Couto Meurer, Marcelo Faria Silva, Bruno Manfredini Baroni
OBJECTIVES: To describe the physiotherapists perceptions and the current practices for injury prevention in elite football (soccer) clubs in Brazil. DESIGN: Cross-sectional study. SETTING: Group of Science in Sports & Exercise, Federal University of Healthy Sciences of Porto Alegre (Brazil). PARTICIPANTS: 16 of the 20 football clubs involved in the Brazilian premier league 2015. MAIN OUTCOME MEASURES: Physiotherapists answered a structured questionnaire...
November 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28872380/optimizing-heat-acclimation-for-endurance-athletes-high-vs-low-intensity-training
#10
Cyril Schmit, Rob Duffield, Christophe Hausswirth, Jeanick Brisswalter, Yann Le Meur
PURPOSE: We sought to determine the effect of high- vs. low-intensity training in the heat and ensuing taper period in the heat on endurance performance. METHODS: Nineteen well-trained triathletes undertook 5 days of normal training and a 1-week taper, including either low- (HA-L, n=10) or high-intensity (HA-H, n=9) training sessions in the heat (30°C, 50% of relative humidity). A control group (n=10) reproduced their usual training in thermoneutral conditions...
September 5, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28841573/pediatric-providers-attitudes-and-practices-regarding-concussion-diagnosis-and-management
#11
Khalida Itriyeva, Ronald Feinstein, Linda Carmine
Background Concussions, a form of mild traumatic brain injury, are a current "hot topic" in sports and medicine, with current research focusing on diagnosis, treatment, and the long-term effects of repeated concussions on development of chronic traumatic encephalopathy. Concussions represent 8.9% of all high school athletic injuries, and pediatricians see many of these patients in their practices, however evolving guidelines and recommendations have resulted in varying practices among providers. Objective To assess how local pediatricians in New York Chapter 2 of the American Academy of Pediatrics (AAP) diagnose and treat concussion patients, and to evaluate the need for continuing education in this area...
August 25, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28798200/wearable-physiological-monitoring-for-human-thermal-work-strain-optimization
#12
Mark J Buller, Alexander Pearson Welles, Karl E Friedl
Safe performance limits of soldiers and athletes have typically relied on predictive work-rest models of ambient conditions, average work intensity, and characteristics of the population. Bioengineering advances in noninvasive sensor technologies including miniaturization, reduced cost, power requirements, and comfort now make it possible to produce individual predictions of safe thermal-work limits. These precision medicine assessments depend on the development of thoughtful algorithms based on physics and physiology...
August 10, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28597621/hemodynamic-adaptation-to-training-in-visually-impaired-professional-tandem-cyclists
#13
Anna M Kamelska, Krzysztof L Mazurek, Jacek J Nowakowski
BACKGROUND: Cycling is one of the disciplines with the greatest training-induced volumetric changes in cardiovascular systems. The aim of the study was to evaluate the hemodynamic adaptation to 7-month routine training in athletes with and without severe visual impairment. METHODS: The study involved 26 men: visually impaired (VI) (n = 13; 37±12.2 years) and properly sighted (PS) (n = 13; 41±12.8 years) elite tandem-cycling athletes. They underwent hemodynamic variables monitoring at rest and during exercise test by impedance cardiography (ICG), before (in the middle of the transition period) and after 7-month cycling training (at the beginning of the competitive period)...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28469745/adequacy-of-the-ultra-short-term-hrv-to-assess-adaptive-processes-in-youth-female-basketball-players
#14
Fabio Y Nakamura, Lucas A Pereira, Cesar C Cal Abad, Igor F Cruz, Andrew A Flatt, Michael R Esco, Irineu Loturco
Heart rate variability has been widely used to monitor athletes' cardiac autonomic control changes induced by training and competition, and recently shorter recording times have been sought to improve its practicality. The aim of this study was to test the agreement between the (ultra-short-term) natural log of the root-mean-square difference of successive normal RR intervals (lnRMSSD - measured in only 1 min post-1 min stabilization) and the criterion lnRMSSD (measured in the last 5 min out of 10 min of recording) in young female basketball players...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28239404/impact-of-a-6-week-non-energy-restricted-ketogenic-diet-on-physical-fitness-body-composition-and-biochemical-parameters-in-healthy-adults
#15
Paul Urbain, Lena Strom, Lena Morawski, Anja Wehrle, Peter Deibert, Hartmut Bertz
BACKGROUND: The ketogenic diet (KD) is a very low-carbohydrate, high-fat and adequate-protein diet that without limiting calories induces different metabolic adaptations, eg, increased levels of circulating ketone bodies and a shift to lipid metabolism. Our objective was to assess the impact of a 6-week non-energy-restricted KD in healthy adults beyond cohorts of athletes on physical performance, body composition, and blood parameters. METHODS: Our single arm, before-and-after comparison study consisted of a 6-week KD with a previous preparation period including detailed instructions during classes and individual counselling by a dietitian...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28149347/application-of-a-physiological-strain-index-in-evaluating-responses-to-exercise-stress-a-comparison-between-endurance-and-high-intensity-intermittent-trained-athletes
#16
Ilona Pokora, Aleksandra Żebrowska
The study evaluated differences in response to exercise stress between endurance and high-intensity intermittent trained athletes in a thermoneutral environment using a physiological strain index (PSI). Thirty-two subjects participated in a running exercise under normal (23°C, 50% RH) conditions. The group included nine endurance trained athletes (middle-distance runners - MD), twelve high-intensity intermittent trained athletes (soccer players - HIIT) and eleven students who constituted a control group. The exercise started at a speed of 4 km·h(-1) which was increased every 3 min by 2 km·h(-1) to volitional exhaustion...
April 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28145740/adaptive-alterations-in-shoulder-range-of-motion-and-strength-in-young-tennis-players
#17
Benoit Gillet, Mickaël Begon, Violaine Sevrez, Christian Berger-Vachon, Isabelle Rogowski
CONTEXT: Playing tennis requires unilateral and intensive movement of the upper limb, which may lead to functional adaptations of the shoulder and an increased injury risk. Identifying which athletes will be future elite tennis players starts at 5 to 6 years of age. Therefore, highly skilled players practice intensively in their childhood. However, whether these functional changes occur during the prepubertal years has not been established. OBJECTIVES: To assess changes in glenohumeral-joint-rotation range of motion and strength of the shoulder-complex muscles in prepubertal elite tennis players...
February 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/27967274/a-new-method-to-individualize-monitoring-of-muscle-recovery-in-athletes
#18
Anne Hecksteden, Werner Pitsch, Ross Julian, Mark Pfeiffer, Michael Kellmann, Alexander Ferrauti, Tim Meyer
PURPOSE: Assessment of muscle recovery is essential for the daily fine-tuning of training load in competitive sports, but individual differences may limit the diagnostic accuracy of group-based reference ranges. We report an attempt to develop individualized reference ranges using a Bayesian approach comparable to that developed for the athlete biological passport. METHODS: Urea and creatine kinase (CK) were selected as indicators of muscle recovery. For each parameter, prior distributions and repeated measures standard deviations were characterized based on data of 883 squad athletes (1758 data points, 1-8 per athlete, years 2013-2015)...
December 14, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27937967/tensiomyographical-responses-to-accelerometer-loads-in-female-collegiate-basketball-players
#19
Kyle D Peterson, Gabriela T Quiggle
The purpose of the present study was to characterise the relationship between relative versus absolute internal and external loads in collegiate basketball players throughout the course of a season. Five Division I basketball players wore triaxial accelerometers throughout the 2015-2016 season and were tensiomyographically assessed weekly. One-way repeated-measure analysis of variance (RM ANOVA) with least-significant-difference (LSD) pairwise comparisons was used to determine which absolute weekly loads were different across the season...
December 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27895662/muscle-enriched-micrornas-isolated-from-whole-blood-are-regulated-by-exercise-and-are-potential-biomarkers-of-cardiorespiratory-fitness
#20
Joshua Denham, Priscilla R Prestes
MicroRNAs (miRNAs) are small non-coding RNA molecules that regulate gene expression post-transcriptionally. Evidence indicating miRNAs influence exercise-induced health and performance adaptations is mounting. Circulating miRNAs are responsible for intercellular communication and could serve as biomarkers for disease and exercise-related traits. Such biomarkers would contribute to exercise screening, monitoring, and the development of personalized exercise prescription. Accordingly, we investigated the impact of long-term strenuous aerobic exercise training and a single bout of maximal aerobic exercise on five muscle-enriched miRNAs implicated in exercise adaptations (miR-1, miR-133a, miR-181a, miR-486, and miR-494)...
2016: Frontiers in Genetics
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