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Overtraining

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https://www.readbyqxmd.com/read/29926662/-effects-and-mechanisms-of-6-week-intensive-training-on-renal-function-in-rats
#1
Yan-Long Niu, Jian-Min Cao, Hai-Tao Zhou, Jie Li
OBJECTIVE: To study the effect of 6-week intensive training on renal function in rats and the mechanism of exercise-induced proteinuria. METHODS: Thirty-six male SD rats, aged 6 weeks, were divided into two groups, including a control group(C, n =12)and an overtraining group(M, n =24). After the rats adapted to feeding for 4 d, group C did not carry out any exercise, and the M group did 6-week of increasing load swimming, 6 days a week, once a day. Started with the load of 1%weight at the beginning of the 4th week,and gradually increased (to 6% weight)...
January 8, 2018: Chinese Journal of Applied Physiology
https://www.readbyqxmd.com/read/29915702/identifying-the-predisposing-factors-signs-and-symptoms-of-overreaching-and-overtraining-in-physical-education-professionals
#2
Ricardo B Viana, Paulo Gentil, Vinício S Lorenço, Carlos A Vieira, Mário H Campos, Douglas A T Santos, Wellington F Silva, Marilia S Andrade, Rodrigo L Vancini, Claudio A B de Lira
Background: It is possible that physical education professionals, especially those who participate in aerobic activities, have predisposing factors, signs and symptoms of overreaching (OVR) and overtraining (OVT) due to a high load and volume of exercise followed by suboptimal recovery time. The present study aimed to identify the predisposing factors, signs and symptoms of OVR and OVT in physical education professionals. Methods: A questionnaire consisting of 42 questions (10 questions group) about predisposing factors and signs/symptoms was answered by 132 physical education professionals from both sexes (83 men and 49 women) who were allocated into a resistance training group (RG, n  = 74), aerobic training group (AG, n  = 20) and resistance and aerobic training group (RAG, n  = 38)...
2018: PeerJ
https://www.readbyqxmd.com/read/29878985/evaluation-of-skating-top-speed-acceleration-and-multiple-repeated-sprint-speed-ice-hockey-performance-tests
#3
Colin W Bond, Tylor W Bennett, Benjamin C Noonan
Bond, CW, Bennett, TW, and Noonan, BC. Evaluation of skating top speed, acceleration, and multiple repeated sprint speed ice hockey performance tests. J Strength Cond Res XX(X): 000-000, 2018-Skating speed, acceleration (ACC), and economy are important attributes related to ice hockey success and should ideally be tested on the ice in a reliable and time efficient manner that is accessible to coaches at all levels of the sport. The purpose of this study was to determine the reliability of certain on-ice tests and further, to use these results to evaluate changes in performance across a season...
June 6, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29797568/excessive-training-induces-molecular-signs-of-pathologic-cardiac-hypertrophy
#4
Alisson L da Rocha, Giovana R Teixeira, Ana P Pinto, Gustavo P de Morais, Luciana da C Oliveira, Larissa Gaioto de Vicente, Lilian E C M da Silva, José R Pauli, Dennys E Cintra, Eduardo R Ropelle, Leandro P de Moura, Rania A Mekary, Ellen C de Freitas, Adelino S R da Silva
Chronic exercise induces cardiac remodeling that promotes left ventricular hypertrophy and cardiac functional improvement, which are mediated by the mammalian or the mechanistic target of rapamycin (mTOR) as well as by the androgen and glucocorticoid receptors (GRs). However, pathological conditions (i.e., chronic heart failure, hypertension, and aortic stenosis, etc.) also induce cardiac hypertrophy, but with detrimental function, high levels of proinflammatory cytokines and myostatin, elevated fibrosis, reduced adenosine monophosphate-activated protein kinase (AMPK) activation, and fetal gene reactivation...
May 24, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29740346/can-sleep-be-used-as-an-indicator-of-overreaching-and-overtraining-in-athletes
#5
Michele Lastella, Grace E Vincent, Rob Duffield, Gregory D Roach, Shona L Halson, Luke J Heales, Charli Sargent
No abstract text is available yet for this article.
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29733940/a-fresh-look-at-functional-link-neural-network-for-motor-imagery-based-brain-computer-interface
#6
Imali T Hettiarachchi, Toktam Babaei, Thanh Nguyen, Chee P Lim, Saeid Nahavandi
BACKGROUND: Artificial neural networks (ANN) is one of the widely used classifiers in the brain computer interface (BCI) systems-based on noninvasive electroencephalography (EEG) signals. Among the different ANN architectures, the most commonly applied for BCI classifiers is the multilayer perceptron (MLP). When appropriately designed with optimal number of neuron layers and number of neurons per layer, the ANN can act as a universal approximator. However, due to the low signal-to-noise ratio of EEG signal data, overtraining problem may become an inherent issue, causing these universal approximators to fail in real-time applications...
May 4, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29666559/assessing-performance-in-pre-season-wrestling-athletes-using-biomarkers
#7
Ionas Papassotiriou, Artemissia-Phoebe Nifli
Introduction: Although regular training introduces the desired changes in athletes' metabolism towards optimal final performance, literature is rarely focusing on the metabolic responses off-competition. Therefore, the aim of this study was to evaluate biochemical indices during typical preseason training in wrestling athletes. Materials and methods: Twenty male freestyle and Greco-roman wrestlers (14 to 31 years) followed a typical session of the preparatory phase...
June 15, 2018: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/29621810/-secondary-full-title-effects-of-high-intensity-interval-training-in-plain-and-uphill-regarding-physical-performance
#8
Natalie Marterer, Verena Menz, Martin Burtscher
BACKGROUND:  As the number of HIITs is increasing in competitive and non-competitive sports, the risk of injuries and overload is increasing. There are no scientific data to support specific recommendations in regard to intensity, duration, number of intervals and gradient for HIIT that result in improved muscular parameters in athletes. Therefore the aim of this study was to compare HIIT in plain and uphill exercise, with respect to exercise tolerance and improvements in performance (VO2max and 800 m running time in the plain and uphill)...
June 2018: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29614917/perfectionism-and-training-distress-in-junior-athletes-the-mediating-role-of-coping-tendencies
#9
Daniel J Madigan, Andrew P Hill, Paul A Anstiss, Sarah H Mallinson-Howard, Simon Kumar
Training distress occurs when athletes fail to cope with physiological and psychological stress and can be an early sign of overtraining syndrome. Recent research has found that perfectionism predicts increases in training distress in junior athletes over time. The current study provides the first empirical test of the possibility that coping tendencies mediate the perfectionism-training distress relationship. Adopting a cross-sectional design, 171 junior athletes (mean age = 18.1 years) completed self-report measures of perfectionistic strivings, perfectionistic concerns, problem-focused coping, avoidant coping, and training distress...
April 3, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29600310/pain-across-artists-lifespan
#10
EDITORIAL
Bronwen J Ackermann
Having a lifelong career as a professional performing artist carries both challenges and benefits across different body systems. Pushing one's body to the limits results in a higher risk of suffering from some kind of episode of overload, whether it be physical or psychological. Indeed, a sudden increase in playing load (overtraining) is linked with increased frequency and intensity of pain or performance-related musculoskeletal disorders in both dance and music student populations. In this issue, research highlights this across the lifespan and in different genres of performing arts, including Irish fiddlers...
March 2018: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/29571524/habits-are-negatively-regulated-by-histone-deacetylase-3-in-the-dorsal-striatum
#11
Melissa Malvaez, Venuz Y Greenfield, Dina P Matheos, Nicolas A Angelillis, Michael D Murphy, Pamela J Kennedy, Marcelo A Wood, Kate M Wassum
BACKGROUND: Optimal behavior and decision making result from a balance of control between two strategies, one cognitive/goal-directed and one habitual. These systems are known to rely on the anatomically distinct dorsomedial and dorsolateral striatum, respectively. However, the transcriptional regulatory mechanisms required to learn and transition between these strategies are unknown. Here we examined the role of one chromatin-based transcriptional regulator, histone modification via histone deacetylases (HDACs), in this process...
February 8, 2018: Biological Psychiatry
https://www.readbyqxmd.com/read/29564546/sports-psychiatry-mental-health-and-mental-disorders-in-athletes-and-exercise-treatment-of-mental-disorders
#12
REVIEW
Andreas Ströhle
Sports psychiatry has developed for the past 3 decades as an emerging field within psychiatry and sports medicine. An International society has been established in 1994 and also national interest groups were implemented, mostly within the national organizations for psychiatry, some also containing the topic of exercise treatment of mental disorders. Where are we now 30 years later? We systematically but also selectively review the medical literature on exercise, sport, psychiatry, mental health and mental disorders and related topics...
March 21, 2018: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/29543069/multidimensional-monitoring-of-recovery-status-and-implications-for-performance
#13
Jahan Heidari, Jürgen Beckmann, Maurizio Bertollo, Michel Brink, Wolfgang Kallus, Claudio Robazza, Michael Kellmann
Monitoring of recovery in the context of athletic performance has gained significant importance during recent years. As a systematic process of data collection and evaluation, the monitoring of recovery can be implemented for various purposes. It may aid to prevent negative outcomes of training or competition, such as underrecovery, overtraining, or injuries. Further, it aims at establishing routines and strategies necessary to guarantee athletes' readiness for performance by restoring their depleted resources...
March 15, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29538614/exploiting-and-assessing-multi-source-data-for-supervised-biomedical-named-entity-recognition
#14
Dieter Galea, Ivan Laponogov, Kirill Veselkov
Motivation: Recognition of biomedical entities from scientific text is a critical component of natural language processing and automated information extraction platforms. Modern named entity recognition approaches rely heavily on supervised machine learning techniques, which are critically dependent on annotated training corpora. These approaches have been shown to perform well when trained and tested on the same source. However, in such scenario, the performance and evaluation of these models may be optimistic, as such models may not necessarily generalize to independent corpora, resulting in potential non-optimal entity recognition for large-scale tagging of widely diverse articles in databases such as PubMed...
March 10, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29536784/autonomic-modulations-of-heart-rate-variability-are-associated-with-sports-injury-incidence-in-sprint-swimmers
#15
Dayanne S Lima-Borges, Paula F Martinez, Luiz Carlos M Vanderlei, Fernando S S Barbosa, Silvio A Oliveira-Junior
OBJECTIVES: Young athletes' participation in competitive sports is becoming increasingly common, and this increased involvement raises concerns about the occurrence of overtraining and sports injuries. Since these issues are poorly understood, this study analyzed heart rate variability, stress/recovery relationship, and sports injury incidence during a training macrocycle of young sprint and endurance swimmers. METHODS: Thirty teenage swimmers (aged 12 to 17 years) were divided into two groups as follows: Sprint (n = 17) and Endurance (n = 13)...
March 28, 2018: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29528959/seasonal-changes-in-anthropometric-physiological-nutritional-and-performance-factors-in-collegiate-rowers
#16
Kenji Kuzuhara, Kanako Katai, Tatsuya Hojo, Yoshihiko Fujisawa, Misaka Kimura, Yasuyoshi Yanagida, Yosuke Yamada, Junta Iguchi
Well-controlled seasonal distribution of training intensity appears to be an important variable for endurance athletes' success as competitors and/or for avoidance of overtraining. The aim of this study was to examine the interrelationships of training distribution, body composition, energy intake/expenditure, and rowing ergometer performance throughout the 2012-2013 season. In the present study of 15 collegiate male rowers, most of whom started rowing during their time at the university, we divided the 2012-2013 season (total 37 weeks) into 3 phases (off-season, December to mid-March, 16 weeks; pre-season, late March to April, 5 weeks; and in-season, May to August, 16 weeks) and analyzed the transition of 2000-m rowing ergometer time, training intensity/volume, body composition (body weight and body fat) and energy intake/expenditure in each phase...
March 6, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29467598/an-attempt-to-induce-an-immunomodulatory-effect-in-rowers-with-spirulina-extract
#17
RANDOMIZED CONTROLLED TRIAL
Artur Juszkiewicz, Piotr Basta, Elżbieta Petriczko, Bogusław Machaliński, Jerzy Trzeciak, Karolina Łuczkowska, Anna Skarpańska-Stejnborn
Background: The aim of this study was to analyze the response of selected components of the immune system in rowers to maximal physical exercise, and to verify if this response can be modulated by supplementation with spirulina (cyanobacterium Spirulina platensis ) . Method: The double-blind study included 19 members of the Polish Rowing Team. The subjects were randomly assigned to the supplemented group ( n  = 10), receiving 1500 mg of spirulina extract for 6 weeks, or to the placebo group ( n  = 9)...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29450135/development-of-a-specific-index-to-detect-malnutrition-in-athletes-validity-in-weight-class-or-intermittent-fasted-athletes
#18
François D Desgorces, Christophe Moinard, Mounir Chennaoui, Jean-François Toussaint, Cyril Petibois, Philippe Noirez
Fasted or weight-category athletes manage their training under strict diet conditions that could impair the stress-recovery balance and result in acute or chronic fatigue. However, to date, no validated biomarker are available to quantify this phenomena. The aim of this study was to assess the validity of a specific index combining plasma albumin and weight change to detect nutrition-related risks of fatigue increase and under-performance in athletes experiencing particular nutritional conditions. An athlete's nutrition risk index (ANRI) equation, based on data from lightweight and heavyweight rowers, was developed using relationship between plasma albumin concentrations combined to weight changes with sport performance and overtraining scores and was tested by odds ratio for failure...
June 2017: Biochimie open
https://www.readbyqxmd.com/read/29378205/coordinated-neural-behavioral-and-phenomenological-changes-in-perceptual-plasticity-through-overtraining-of-synesthetic-associations
#19
Nicolas Rothen, David J Schwartzman, Daniel Bor, Anil K Seth
Synesthesia is associated with additional perceptual experiences, which are automatically and consistently triggered by specific inducing stimuli. Synesthesia is also accompanied by more general sensory and cortical changes, including enhanced modality-specific cortical excitability. Extensive cognitive training has been shown to generate synesthesia-like phenomenology but whether these experiences are accompanied by neurophysiological changes characteristic of synesthesia remains unknown. Addressing this question provides a unique opportunity to elucidate the neural basis of perceptual plasticity relevant to conscious experiences...
March 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29364545/influence-of-excessive-exercise-on-immunity-metabolism-and-gut-microbial-diversity-in-an-overtraining-mice-model
#20
Xin Yuan, Shijie Xu, Haiyang Huang, Jian Liang, Yayun Wu, Chujie Li, Huiqi Yuan, Xuejie Zhao, Xiaoping Lai, Shaozhen Hou
The purpose of this study was to evaluate the negative influence of excessive exercise on immunity, substance and energy metabolism as well as gut microbiota in mice. Firstly, an overtraining model of Male Kunming mice was established by high-intensity swimming exercise for 4 weeks. Then, a series of evaluation indicators, including the routine blood analysis, immune organ coefficient, digestive enzymes, and aquaporins expression levels of small intestine and colon tissue, histological examinations of liver, spleen, small intestine, and colon, were determined based on this model...
May 2018: Scandinavian Journal of Medicine & Science in Sports
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