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https://www.readbyqxmd.com/read/28817408/reactive-osteochondromatous-lesion-of-the-femoral-neck-in-a-highly-active-preadolescent-patient-is-this-the-pathogenesis-of-a-cam-deformity
#1
Yoko Matsuda, Naomi Kobayashi, Yutaka Inaba, So Kubota, Yohei Yukizawa, Hyonmin Choe, Ikuma Kato, Kenichi Ohashi, Tomoyuki Saito
Here, we present a rare case of a preadolescent boy with a prominent bony bump on the femoral neck. The main histological feature was concordant with a reactive osteochondromatous lesion possibly induced by repetitive microtrauma, probably because of overtraining as a soccer goalkeeper. The nature of this pathological change is consistent with the growth of a cam deformity. Especially in the preadolescent age group, we should note that repetitive use of the same joint kinematics may induce a prominent cam deformity...
August 16, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28767620/effects-of-training-and-overtraining-on-intervertebral-disc-proteoglycans
#2
Renato H S Ueta, Victor A F Tarini, Carlos E Franciozi, Marcel J S Tamaoki, Valquíria P Medeiros, Helena B Nader, Flávio Faloppa
STUDY DESIGN: Animal experimental study OBJECTIVE.: Evaluate the effect of physical activity and overtraining condition on glycosaminoglycan concentration on the intervertebral disc (IVD) using a rat running model. SUMMARY OF BACKGROUND DATA: Some guidelines recommend the implementation of a physical exercise program as treatment for low back pain, however cyclic loading impact on the health of the intervertebral disc and whether there is a dose-response relationship is still incompletely understood...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28737585/biomarkers-in-sports-and-exercise-tracking-health-performance-and-recovery-in-athletes
#3
Elaine C Lee, Maren S Fragala, Stavros A Kavouras, Robin M Queen, J Luke Pryor, Douglas J Casa
Biomarker discovery and validation is a critical aim of the medical and scientific community. Research into exercise and diet-related biomarkers aims to improve health, performance, and recovery in military personnel, athletes, and lay-persons. Exercise physiology research has identified individual biomarkers for assessing health, performance, and recovery during exercise training. However, there are few recommendations for biomarker panels for tracking changes in individuals participating in physical activity and exercise training programs...
July 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28639438/body-composition-analysis-to-study-long-term-training-effects-in-elite-male-water-polo-athletes
#4
Giovanni Melchiorri, Valerio Viero, Roberto Sorge, Tamara Triossi, Alessandro Campagna, Stella L Volpe, Dalgisio Lecis, Virginia Tancredi, Angela Andreoli
BACKGROUND: Elite water polo athletes undergo heavy training programs throughout the year, but especially to prepare major competitions, such as the Olympics. Optimal athletic performance is a result of many factors, including proper management of the intensity and volume of training, nutrition and recovery between training sessions. When training is excessive in relation to recovery may occur non functional overreaching (NFO). NFO can degenerate into overtraining syndrome (OTS) resulting in a decrease in athletic performance, with likely changes in body weight and body composition...
June 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28597618/effects-of-resistance-training-overtraining-and-early-specialization-on-youth-athletes
#5
Benjamin K Walters, Connor R Read, A Reed Estes
INTRODUCTION: In 2014, 60 million youth ages 6-18 participated in some form of generalized athletics. 3.5 million children are injured annually participating in organized sport or recreational activities. While sound physical education can decrease the burden of youth sports injuries, the median annual physical education budget of $764 for United States elementary, middle and high schools may not allow enough flexibility to apply evidenced-based guidelines. EVIDENCE ACQUISITION: The topics were selected after a careful review of the 2016 National Strength and Conditioning Association Position Statement on Long-Term Athletic Development...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28544858/effects-of-resistance-training-on-performance-in-previously-trained-endurance-runners-a-systematic-review
#6
Manuel Alcaraz-Ibañez, Manuel Rodríguez-Pérez
The aim of this work was to identify, synthesize and evaluate the results of randomized controlled trials examining the effects of resistance training on performance indicators in previously trained endurance runners. A database search was carried out in PubMed, Science Direct, OvidSPMedLine, Wiley, Web of Science, ProQuest and Google Scholar. In accordance with the PRISMA checklist, 18 published articles dated prior to May 2016 involving 321 endurance runners were reviewed using the PEDro scale. Resistance training led to general improvements in muscular strength, running economy, muscle power factors, and direct performance in distances between 1,500 and 10,000 m...
May 25, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28535314/team-training-in-family-medicine-residency-programs-and-its-impact-on-team-based-practice-post-graduation
#7
Patricia A Carney, Elaine Waller, Eve Dexter, Miguel Marino, Kelly Morton, Larry Green, Colleen T Fogarty, Samuel Jones, M Patrice Eiff
OBJECTIVE: Our objective was to examine perceptions of adequacy in team-based care training during residency and whether this influences practice choice post- residency training. METHODS: We analyzed self-administered survey data from recent residency graduates collected as part of the Preparing Personal Physicians for Practice (P4) Project to characterize residents' perceptions of adequacy of training they received on team-based care. Multivariable logistic regression was used to assess the association between adequacy of team-based care training and joining practices that use team-based care after residency graduation, adjusting for differences in demographics...
May 2017: Family Medicine
https://www.readbyqxmd.com/read/28497285/comparison-of-periodized-and-non-periodized-resistance-training-on-maximal-strength-a-meta-analysis
#8
REVIEW
Tyler D Williams, Danilo V Tolusso, Michael V Fedewa, Michael R Esco
BACKGROUND: Periodization is a logical method of organizing training into sequential phases and cyclical time periods in order to increase the potential for achieving specific performance goals while minimizing the potential for overtraining. Periodized resistance training plans are proposed to be superior to non-periodized training plans for enhancing maximal strength. OBJECTIVE: The primary aim of this study was to examine the previous literature comparing periodized resistance training plans to non-periodized resistance training plans and determine a quantitative estimate of effect on maximal strength...
May 12, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28480859/the-effects-of-non-functional-overreaching-and-overtraining-on-autonomic-nervous-system-function-in-highly-trained-athletes
#9
T Kajaia, L Maskhulia, K Chelidze, V Akhalkatsi, Z Kakhabrishvili
Aim of the study was to compare the ANS functioning, as measured by heart rate variability (HRV), in athletes with non-functional overreaching (NFO) and overtraining syndrome (OTS) and in athletes without NFO/OTS. In 43 athletes with NFO/OTS, 40 athletes without NFO/OTS, as well as in 35 sedentary subjects the ANS function was evaluated with the Autonomic Balance Test, based on the HRV analysis of resting heart rate recordings. Results of the study show lower HRV and lower vagal influence along with increased sympathetic cardiovascular control in athletes with non-functional overreaching and particularly in athletes with overtraining, than in highly trained athletes without NFO/OTS...
March 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28446868/triggering-avoidance-dissociable-influences-of-aversive-pavlovian-conditioned-stimuli-on-human-instrumental-behavior
#10
Sara Garofalo, Trevor W Robbins
The present study investigates human aversive Pavlovian-to-Instrumental Transfer (PIT) and possible influences of outcome devaluation and instrumental overtraining on this effect. PIT measures the extent to which a Pavlovian conditioned stimulus (CS) can increase instrumental responses independently paired with the same (outcome-specific transfer) or a different (general transfer) reinforcer. Two measures of PIT were obtained: the percentage of instrumental responses and the vigor of such responses. Thirty-eight volunteers performed a standard PIT task sequence...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28422588/alterations-in-redox-homeostasis-during-recovery-from-unexplained-underperformance-syndrome-in-an-elite-international-rower
#11
Nathan A Lewis, Ann Redgrave, Mark Homer, Richard Burden, Wendy Martinson, Brian Moore, Charles R Pedlar
PURPOSE: This case study of an international rower examines a diagnosis of Unexplained Under Performance Syndrome (UUPS or Overtraining Syndrome) describing a full recovery and return to elite competition the same year. METHODS: On diagnosis and 4 and 14 months post-diagnosis, detailed assessments including physiological, nutritional, and biomarkers were made. RESULTS: Clinical examination and laboratory results for haematology, biochemistry, thyroid function, immunology, vitamins and minerals were unremarkable and did not explain the presentation and diagnosis...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28408889/effects-of-sesame-sesamum-indicum-l-supplementation-on-creatine-kinase-lactate-dehydrogenase-oxidative-stress-markers-and-aerobic-capacity-in-semi-professional-soccer-players
#12
Carlos V da Silva Barbosa, Alexandre S Silva, Caio V C de Oliveira, Nayara M L Massa, Yasmim R F de Sousa, Whyara K A da Costa, Ayice C Silva, Plínio Delatorre, Rhayane Carvalho, Valdir de Andrade Braga, Marciane Magnani
Nutritional intervention with antioxidants rich foods has been considered a strategy to minimize the effects of overtraining in athletes. This experimental, randomized, and placebo-controlled study evaluated the effects of consumption of sesame (Sesamum indicum L.) on muscle damage markers, oxidative stress, systemic inflammation, and aerobic performance in male semi-professional soccer players. Twenty athletes were randomly assigned to groups that received 40 g (two tablespoons) per day of sesame or a placebo during 28 days of regular training (exposed to routine training that includes loads of heavy training in the final half of the season)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28342242/a-systematic-analysis-of-scoring-functions-in-rigid-body-protein-docking-the-delicate-balance-between-the-predictive-rate-improvement-and-the-risk-of-overtraining
#13
Didier Barradas-Bautista, Iain H Moal, Juan Fernández-Recio
Protein-protein interactions play fundamental roles in biological processes including signaling, metabolism, and trafficking. While the structure of a protein complex reveals crucial details about the interaction, it is often difficult to acquire this information experimentally. As the number of interactions discovered increases faster than they can be characterized, protein-protein docking calculations may be able to reduce this disparity by providing models of the interacting proteins. Rigid-body docking is a widely used docking approach, and is often capable of generating a pool of models within which a near-native structure can be found...
July 2017: Proteins
https://www.readbyqxmd.com/read/28306393/circannual-rhythm-of-plasmatic-vitamin-d-levels-and-the-association-with-markers-of-psychophysical-stress-in-a-cohort-of-italian-professional-soccer-players
#14
Giovanni Lombardi, Jacopo Antonino Vitale, Sergio Logoluso, Giovanni Logoluso, Nino Cocco, Giulio Cocco, Antonino Cocco, Giuseppe Banfi
Adequate plasmatic Vitamin D levels are crucial to maintain calcium homeostasis and bone metabolism both in the general population and in athletes. Correct dietary supply and a regular sun exposure are fundamental for allowing the desired and effective fitness level. Past studies highlighted a scenario of Vitamin D insufficiency among professional soccer players in several countries, especially in North Europe, whilst a real deficiency in athletes is rare. The typical seasonal fluctuations of Vitamin D are wrongly described transversally in athletes belonging to teams that play at different latitudes and a chronobiologic approach studying the Vitamin D circannual rhythm in soccer players has not been described yet...
2017: Chronobiology International
https://www.readbyqxmd.com/read/28265245/passion-and-pacing-in-endurance-performance
#15
Lieke Schiphof-Godart, Florentina J Hettinga
Endurance sports are booming, with sports passionates of varying skills and expertise battering city streets and back roads on their weekly or daily exercise rounds. The investments required for performing in endurance exercise are nevertheless considerable, and passion for their sport might explain the efforts endurance athletes are willing to make. Passion may be defined as a strong motivational force and as such might be related to the neurophysiological basis underlying the drive to exercise. A complex relationship between the brain and other systems is responsible for athletes' exercise behavior and thus performance in sports...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28240299/identification-of-an-unconventional-process-of-instrumental-learning-characteristically-initiated-with-outcome-devaluation-insensitivity-and-generalized-action-selection
#16
Yoshio Iguchi, Ziqiao Lin, Hiromi Nishikawa, Yoshio Minabe, Shigenobu Toda
The distinction between goal-directed action and habitual response, particularly with respect to moderate or extended appetitive instrumental training, is well documented; however, the propensity toward instrumental behavior in the early training stage has not been elucidated. In this study, we trained Sprague Dawley rats to press a lever to obtain food as an outcome for various time periods and monitored the changes in their sensitivity to outcome devaluation and choice between the levers they had been trained with and unfamiliar levers...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28177743/excessive-training-is-associated-with-endoplasmic-reticulum-stress-but-not-apoptosis-in-the-hypothalamus-of-mice
#17
Ana Paula Pinto, Alisson Luiz da Rocha, Bruno Cesar Pereira, Luciana da Costa Oliveira, Gustavo Paroschi Morais, Leandro Pereira Moura, Eduardo Rochete Ropelle, José Rodrigo Pauli, Adelino Sanchez Ramos da Silva
Downhill running-based overtraining model increases the hypothalamic levels of IL-1β, TNF-α, SOCS3, and pSAPK-JNK. The aim of the present study was to verify the effects of 3 overtraining protocols on the levels of BiP, pIRE-1 (Ser724), pPERK (Thr981), pelF2α (Ser52), ATF-6, GRP-94, caspase 4, caspase 12, pAKT (Ser473), pmTOR (Ser2448), and pAMPK (Thr172) proteins in the mouse hypothalamus. The mice were randomized into the control, overtrained by downhill running (OTR/down), overtrained by uphill running (OTR/up), and overtrained by running without inclination (OTR) groups...
December 5, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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
#18
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
#19
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
#20
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
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