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https://www.readbyqxmd.com/read/27966392/changes-in-cytokines-leptin-and-igf-1-levels-in-overtrained-athletes-during-a-prolonged-recovery-phase-a-case-control-study
#1
Raimo Joro, Arja Uusitalo, Keith C DeRuisseau, Mustafa Atalay
We investigated how cytokines are implicated with overtraining syndrome (OTS) in athletes during a prolonged period of recovery. Plasma IL-6, IL-10, TNF-α, IL-1β, adipokine leptin, and insulin like growth factor-1 (IGF-1) concentrations were measured in overtrained (OA: 5 men, 2 women) and healthy control athletes (CA: 5 men, 5 women) before and after exercise to volitional exhaustion. Measurements were conducted at baseline and after 6 and 12 months. Inflammatory cytokines did not differ between groups at rest...
December 14, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27941492/effects-of-a-modified-german-volume-training-program-on-muscular-hypertrophy-and-strength
#2
Theban Amirthalingam, Yorgi Mavros, Guy C Wilson, Jillian L Clarke, Lachlan Mitchell, Daniel A Hackett
German Volume Training (GVT), or the 10 sets method, has been used for decades by weightlifters to increase muscle mass. To date, no study has directly examined the training adaptations following GVT. The purpose of this study was to investigate the effect of a modified GVT intervention on muscular hypertrophy and strength. Nineteen healthy males were randomly assign to 6 weeks of 10 or 5 sets of 10 repetitions for specific compound resistance exercises included in a split-routine performed 3 times per week...
November 25, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27920726/hrvanalysis-a-free-software-for-analyzing-cardiac-autonomic-activity
#3
Vincent Pichot, Frédéric Roche, Sébastien Celle, Jean-Claude Barthélémy, Florian Chouchou
Since the pioneering studies of the 1960s, heart rate variability (HRV) has become an increasingly used non-invasive tool for examining cardiac autonomic functions and dysfunctions in various populations and conditions. Many calculation methods have been developed to address these issues, each with their strengths and weaknesses. Although, its interpretation may remain difficult, this technique provides, from a non-invasive approach, reliable physiological information that was previously inaccessible, in many fields including death and health prediction, training and overtraining, cardiac and respiratory rehabilitation, sleep-disordered breathing, large cohort follow-ups, children's autonomic status, anesthesia, or neurophysiological studies...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27918673/predictive-indicators-of-overuse-injuries-in-adolescent-endurance-athletes
#4
Daniel Martínez-Silván, Jaime Díaz-Ocejo, Andrew Murray
PURPOSE: To analyse the influence of training exposure and the utility of self-report questionnaires on predicting overuse injuries in adolescent endurance athletes. METHODS: 5 adolescent male endurance athletes (15.7 ± 1.4 yr) from a full-time sports academy answered 2 questionnaires (Recovery Cue; RC-q & Oslo Sports Trauma Research questionnaire; OSTRC-q) on a weekly basis for one season (37 wks) in order to detect (1) signs of overtraining and under-recovery (RC-q) and (2) early symptoms of lower limb injuries (OSTRC-q)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27918270/interaction-of-inhibitory-and-facilitatory-effects-of-conditioning-trials-on-long-term-memory-formation
#5
Shouhei Hosono, Yukihisa Matsumoto, Makoto Mizunami
Animals learn through experience and consolidate the memories into long-time storage. Conditioning parameters to induce protein synthesis-dependent long-term memory (LTM) have been the subject of extensive studies in many animals. Here we found a case in which a conditioning trial inhibits or facilitates LTM formation depending on the intervals from preceding trials. We studied the effects of conditioning parameters on LTM formation in olfactory conditioning of maxillary-palpi extension response with sucrose reward in the cockroach Periplaneta americana We found, at first, that translation- and transcription-dependent LTM forms 1 h after training, the fastest so far reported in insects...
December 2016: Learning & Memory
https://www.readbyqxmd.com/read/27889430/classification-of-teeth-in-cone-beam-ct-using-deep-convolutional-neural-network
#6
Yuma Miki, Chisako Muramatsu, Tatsuro Hayashi, Xiangrong Zhou, Takeshi Hara, Akitoshi Katsumata, Hiroshi Fujita
Dental records play an important role in forensic identification. To this end, postmortem dental findings and teeth conditions are recorded in a dental chart and compared with those of antemortem records. However, most dentists are inexperienced at recording the dental chart for corpses, and it is a physically and mentally laborious task, especially in large scale disasters. Our goal is to automate the dental filing process by using dental x-ray images. In this study, we investigated the application of a deep convolutional neural network (DCNN) for classifying tooth types on dental cone-beam computed tomography (CT) images...
November 12, 2016: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/27845474/risk-of-infectious-mononucleosis-among-agonistic-swimmers-a-cross-sectional-study
#7
M S Gallone, L Astuto, G Mastrorilli, R Tamma, L Ascatigno, D Sinesi, A Notarnicola, S Tafuri
BACKGROUND: The risk of infectious mononucleosis among athletes is quite debated. Some personal observations seem to suggest an increase risk of mononucleosis among athletes, because they attend always close settings with an high probability of respiratory pathogens transmission; overtraining has been also proposed as risk factor. STUDY DESIGN: Cross-sectional study in a group of swimmers (aged 11-14 years) of the University Sport Centre of Bari. METHODS: 40 swimmers were interviewed by healthcare personnel at the end of training courses; demographic characteristics, personal habits, information about sport training and diagnosis of mononucleosis were analysed...
November 2016: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/27782053/circulating-micrornas-as-potential-biomarkers-of-exercise-response
#8
REVIEW
Mája Polakovičová, Peter Musil, Eugen Laczo, Dušan Hamar, Ján Kyselovič
Systematic physical activity increases physical fitness and exercise capacity that lead to the improvement of health status and athletic performance. Considerable effort is devoted to identifying new biomarkers capable of evaluating exercise performance capacity and progress in training, early detection of overtraining, and monitoring health-related adaptation changes. Recent advances in OMICS technologies have opened new opportunities in the detection of genetic, epigenetic and transcriptomic biomarkers. Very promising are mainly small non-coding microRNAs (miRNAs)...
October 5, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27771800/changes-in-resting-mitogen-activated-protein-kinases-following-resistance-exercise-overreaching-and-overtraining
#9
Justin X Nicoll, Andrew C Fry, Andrew J Galpin, Adam J Sterczala, Donald B Thomason, Christopher A Moore, Lawrence W Weiss, Loren Z F Chiu
PURPOSE: Many physiological maladaptations persist after overreaching and overtraining resistance exercise (RE). However, no studies have investigated changes in mitogen-activated protein kinases (MAPK) after overtraining in humans, despite their critical role regulating exercise-induced muscular adaptations. The purpose of this study was to describe the changes in total and resting phosphorylation status of extracellular signal-regulated kinase 1/2 (ERK1/2), c-Jun NH2-terminal kinase (JNK) and p38-MAPK following a period of RE overreaching or overtraining...
December 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27767967/one-year-follow-up-of-blood-viscosity-factors-and-hematocrit-viscosity-ratio-in%C3%A2-elite-soccer-players
#10
Brun Jean-Frédéric, Varlet-Marie Emmanuelle, Fédou Christine, Raynaud de Mauverger Eric
We investigated to what extent a prediction of the 'ideal' hematocrit based on individual hemorheological profile with an equation of viscosity is relevant in trained athletes, and how the agreement between theoretical and actual values is modified by changes in training volume and performance. Elite soccer players (national level: 18-32 yr, weight 61-83 kg, body mass index 20.9-25.8 kg/m2) were seen twice at one year interval. Hemorheologic parameters were measured with the MT90 viscometer and the Myrenne aggregometer the theoretical bell-shaped curve of hematocrit/viscosity ratio as a function of hematocrit was reconstructed with Quemada's equation using actual plasma viscosity and red cell rigidity to predict hematocrit/viscosity at various hematocrit levels...
October 15, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27767965/hematocrit-and-hematocrit-viscosity-ratio-during-exercise-in-athletes-even-closer-to-predicted-optimal-values
#11
Jean-Frédéric Brun, Emmanuelle Varlet-Marie, Eric Raynaud de Mauverger
The hemorheological theory of optimal hematocrit suggests that the best value of hematocrit (hct) should be that which results in the highest value of the hematocrit/viscosity (h/η) ratio. Trained athletes compared to sedentary subjects have a lower hct, but a higher h/η, and endurance training reduces the discrepancy between the actual hct and the ⪡ideal⪢ hct that can be predicted with a theoretical curve of h/η vs hct constructed with Quemada's model. In this study we investigated what becomes this homeostasis of h/η and hct during acute exercise in 19 athletes performing a 25 min exercise test...
October 17, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27751748/-intensive-training-and-menstrual-disorders-in-young-female-impact-on-bone-mass
#12
L Maïmoun, F Paris, O Coste, C Sultan
Participation in recreational physical activity is widely acknowledged to provide significant health benefits. Conversely, intense training imposes several constraints, such as intermittent or chronic metabolic and psychogenic training stressors and maintenance of very low body fat to maximize performance. Adolescent and adult athletic women are therefore at risk of overtraining and/or poor dietary intake, which may have several consequences for endocrine function particularly on hypothalamic-pituitary-gonadal axis...
November 2016: Gynécologie, Obstétrique & Fertilité
https://www.readbyqxmd.com/read/27747782/medical-care-for-swimmers
#13
Morteza Khodaee, George T Edelman, Jack Spittler, Randall Wilber, Brian J Krabak, Daniel Solomon, Scott Riewald, Alicia Kendig, Laura M Borgelt, Mark Riederer, Vladimir Puzovic, Scott Rodeo
Swimming is one of the most popular sports worldwide. Competitive swimming is one of the most watched sports during the Olympic Games. Swimming has unique medical challenges as a result of a variety of environmental and chemical exposures. Musculoskeletal overuse injuries, overtraining, respiratory problems, and dermatologic conditions are among the most common problems swimmers encounter. Although not unique to swimming, overtraining is a serious condition which can have significant negative impact on swimmers' health and performance...
December 2016: Sports Medicine—Open
https://www.readbyqxmd.com/read/27747780/athletes-fit-but-unhealthy
#14
Philip B Maffetone, Paul B Laursen
While the words "fit" and "healthy" are often used synonymously in everyday language, the terms have entirely separate meanings. Fitness describes the ability to perform a given exercise task, and health explains a person's state of well-being, where physiological systems work in harmony. Although we typically view athletes as fit and healthy, they often are not. The global term we place on unhealthy athletes is the overtraining syndrome. In this current opinion, we propose that two primary drivers may contribute to the development of the overtraining syndrome, namely high training intensity and the modern-day highly processed, high glycemic diet...
December 2016: Sports Medicine—Open
https://www.readbyqxmd.com/read/27732041/leveraging-the-test-effect-to-improve-maintenance-of-the-gains-achieved-through-cognitive-rehabilitation
#15
Rhonda B Friedman, Kelli L Sullivan, Sarah F Snider, George Luta, Kevin T Jones
Objective: An important aspect of the rehabilitation of cognitive and linguistic function subsequent to brain injury is the maintenance of learning beyond the time of initial treatment. Such maintenance is often not satisfactorily achieved. Additional practice, or overtraining, may play a key role in long-term maintenance. In particular, the literature on learning in cognitively intact persons has suggested that it is testing, and not studying, that contributes to maintenance of learning. The present study investigates the hypothesis that continuing to test relearned words in persons with anomia will lead to significantly greater maintenance compared with continuing to study relearned words...
October 10, 2016: Neuropsychology
https://www.readbyqxmd.com/read/27685953/exhaustive-training-leads-to-hepatic-fat-accumulation
#16
Alisson L da Rocha, Ana P Pinto, Giovana R Teixeira, Bruno C Pereira, Luciana C Oliveira, Adriana C Silva, Gustavo P Morais, Dennys E Cintra, José R Pauli, Adelino S R da Silva
Recently, we demonstrated that an overtraining (OT) protocol for mice based on downhill running sessions increased the hepatic phosphorylation of 70-kDa ribosomal protein S6 kinase 1 (S6K1; Thr389), a downstream target of the mammalian target of rapamycin complex 1 (mTORC1). In liver, the overactivation of the Akt/mTORC1 pathway induces lipogenesis via regulation of the action of sterol regulatory element binding protein-1 (SREBP-1) at multiple steps. Herein, we verified the effects of three running OT models with same external load (i...
September 29, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27660501/diagnosis-and-prevention-of-overtraining-syndrome-an-opinion-on-education-strategies
#17
Jeffrey B Kreher
Overtraining syndrome is a condition of maladapted physiology in the setting of excessive exercise without adequate rest. The exact etiology and pathogenesis are unknown and being investigated. Symptoms are multisystem in nature and often representative of underlying hormonal, immunologic, neurologic, and psychologic disturbances. Unfortunately, systematic review of the literature does not clearly direct diagnosis, management, or prevention. However, given the severity of symptoms and impairment to quality of life, prevention of overtraining syndrome should be considered by all who interact with endurance athletes...
2016: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/27573090/sports-specialization-and-intensive-training-in-young-athletes
#18
Joel S Brenner
Sports specialization is becoming the norm in youth sports for a variety of reasons. When sports specialization occurs too early, detrimental effects may occur, both physically and psychologically. If the timing is correct and sports specialization is performed under the correct conditions, the athlete may be successful in reaching specific goals. Young athletes who train intensively, whether specialized or not, can also be at risk of adverse effects on the mind and body. The purpose of this clinical report is to assist pediatricians in counseling their young athlete patients and their parents regarding sports specialization and intensive training...
September 2016: Pediatrics
https://www.readbyqxmd.com/read/27535991/how-much-is-too-much-part-2-international-olympic-committee-consensus-statement-on-load-in-sport-and-risk-of-illness
#19
Martin Schwellnus, Torbjørn Soligard, Juan-Manuel Alonso, Roald Bahr, Ben Clarsen, H Paul Dijkstra, Tim J Gabbett, Michael Gleeson, Martin Hägglund, Mark R Hutchinson, Christa Janse Van Rensburg, Romain Meeusen, John W Orchard, Babette M Pluim, Martin Raftery, Richard Budgett, Lars Engebretsen
The modern-day athlete participating in elite sports is exposed to high training loads and increasingly saturated competition calendar. Emerging evidence indicates that inappropriate load management is a significant risk factor for acute illness and the overtraining syndrome. The IOC convened an expert group to review the scientific evidence for the relationship of load-including rapid changes in training and competition load, competition calendar congestion, psychological load and travel-and health outcomes in sport...
September 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27378988/comparison-of-athletes-proneness-to-depressive-symptoms-in-individual-and-team-sports-research-on-psychological-mediators-in-junior-elite-athletes
#20
Insa Nixdorf, Raphael Frank, Jürgen Beckmann
Depression among elite athletes is a topic of increasing interest and public awareness. Currently, empirical data on elite athletes' depressive symptoms are rare. Recent results indicate sport-related mechanisms and effects on depression prevalence in elite athlete samples; specific factors associated with depression include overtraining, injury, and failure in competition. One such effect is that athletes competing in individual sports were found to be more prone to depressive symptoms than athletes competing in team sports...
2016: Frontiers in Psychology
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