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https://www.readbyqxmd.com/read/29450135/development-of-a-specific-index-to-detect-malnutrition-in-athletes-validity-in-weight-class-or-intermittent-fasted-athletes
#1
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/29449792/seric-concentrations-of-copper-chromium-manganesum-nickel-and-selenium-in-aerobic-anaerobic-and-mixed-professional-sportsmen
#2
Marcos Maynar, Francisco Llerena, Ignacio Bartolomé, Javier Alves, María-Concepción Robles, Francisco-Javier Grijota, Diego Muñoz
Background: The aim of the present study was to determine changes in serum concentrations of trace elements Cooper (Cu), Chromiun (Cr), Manganesum (Mn), Nickel (Ni) and Selenium (Se) in high-level sportsmen. Methods: Eighty professional athletes of different metabolic modalities, were recruited before the start of their training period. Thirty one sedentary participants of the same geographic area constituted the control group. Cu, Cr, Mn, Ni and Se analysis was performed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS)...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29449746/high-quality-carbohydrates-and-physical-performance-expert-panel-report
#3
Mitch Kanter
While all experts agreed that protein needs for performance are likely greater than believed in past generations, particularly for strength training athletes, and that dietary fat could sustain an active person through lower-intensity training bouts, current research still points to carbohydrate as an indispensable energy source for high-intensity performance.
January 2018: Nutrition Today
https://www.readbyqxmd.com/read/29447910/preventing-non-contact-acl-injuries-in-female-athletes-what-can-we-learn-from-dancers
#4
Catherine Turner, Sarah Crow, Thomas Crowther, Brittany Keating, Trenton Saupan, Jason Pyfer, Kimberly Vialpando, Szu-Ping Lee
OBJECTIVES: To investigate the effects of dance experience and movement instruction on lower extremity kinematics and muscle activation during a landing task. DESIGN: Cross-sectional case control. SETTING: Laboratory setting. PARTICIPANTS: 27 female subjects (age 18-25) in 2 groups: dancers (n = 12) and non-dancers (n = 15). MAIN OUTCOME MEASURES: Lower extremity biomechanics during drop landing were analyzed...
December 23, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29447400/prevalence-and-clinical-correlation-of-superficial-fungal-foot-infection-in-thai-naval-rating-cadets
#5
Punyawee Ongsri, Sumanas Bunyaratavej, Charussri Leeyaphan, Penvadee Pattanaprichakul, Pattachee Ongmahutmongkol, Chulaluk Komoltri, Kanokvalai Kulthanan
Background: Superficial fungal foot infection is one of the most important dermatological diseases currently affecting military personnel. Many Thai naval rating cadets are found to suffer from superficial fungal foot infections and their sequels. Objective: To investigate prevalence, potent risk factors, responding pathogens and clinical correlation of superficial fungal foot infection in Thai naval rating cadets training in Naval rating school, Sattahip, Thailand...
February 13, 2018: Military Medicine
https://www.readbyqxmd.com/read/29445348/taekwondo-fighting-in-training-does-not-simulate-the-affective-and-cognitive-demands-of-competition-implications-for-behavior-and-transfer
#6
Michael A Maloney, Ian Renshaw, Jonathon Headrick, David T Martin, Damian Farrow
Enhancing practice design is critical to facilitate transfer of learning. Considerable research has focused on the role of perceptual information in practice simulation, yet has neglected how affect and cognition are shaped by practice environments and whether this influences the fidelity of behavior (Headrick et al., 2015). This study filled this gap by examining the fidelity of individual (cognition, affect, and actions) and interpersonal behavior of 10 highly skilled Australian Taekwondo athletes fighting in training compared to competition...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29444538/-effects-of-judo-specific-resistance-training-on-kinetic-and-electromyographic-parameters-of-pulling-exercises-in-judo-athletes
#7
Norman Helm, Olaf Prieske, Thomas Muehlbauer, Tom Krüger, Urs Granacher
BACKGROUND: In judo, rapid force production during pulling movements is an important component of athletic performance, which is why this capacity needs to be specifically exercised in judo. This study aimed at examining the effects of a judo-specific resistance training program using a judo ergometer system (PTJ) versus a traditional resistance training regime using a partner (PTP) on kinetics and muscle activity of judo-specific pulling exercises. METHOD: Twenty-four male judo athletes (age: 22 ± 4 years, training experience: 15 ± 3 years) were randomly assigned to two groups...
February 14, 2018: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29444412/heart-rate-variability-responses-to-acute-and-repeated-post-exercise-sauna-in-trained-cyclists
#8
Anthony S Leicht, Aaron Halliday, Wade H Sinclair, Shaun D'Auria, Martin Buchheit, Glen P Kenny, Jamie Stanley
Short- to medium-term (i.e. 4-14 days) heating protocols induce physiological adaptations including improved cardiac autonomic modulations, as assessed using heart rate variability, which may contribute to greater exercise performance. Whether similar cardiac autonomic changes occur during an intense heating protocol (sauna) reported to increase plasma volume in athletes remains to be confirmed. This study examined the changes in heart rate and its variability during a single, extreme heat (sauna) exposure and repeated exposures in athletes...
February 14, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29444266/fundamentals-of-glycogen-metabolism-for-coaches-and-athletes
#9
Bob Murray, Christine Rosenbloom
The ability of athletes to train day after day depends in large part on adequate restoration of muscle glycogen stores, a process that requires the consumption of sufficient dietary carbohydrates and ample time. Providing effective guidance to athletes and others wishing to enhance training adaptations and improve performance requires an understanding of the normal variations in muscle glycogen content in response to training and diet; the time required for adequate restoration of glycogen stores; the influence of the amount, type, and timing of carbohydrate intake on glycogen resynthesis; and the impact of other nutrients on glycogenesis...
February 10, 2018: Nutrition Reviews
https://www.readbyqxmd.com/read/29444097/the-effects-of-intensified-training-on-resting-metabolic-rate-rmr-body-composition-and-performance-in-trained-cyclists
#10
Amy L Woods, Anthony J Rice, Laura A Garvican-Lewis, Alice M Wallett, Bronwen Lundy, Margot A Rogers, Marijke Welvaert, Shona Halson, Andrew McKune, Kevin G Thompson
BACKGROUND: Recent research has demonstrated decreases in resting metabolic rate (RMR), body composition and performance following a period of intensified training in elite athletes, however the underlying mechanisms of change remain unclear. Therefore, the aim of the present study was to investigate how an intensified training period, designed to elicit overreaching, affects RMR, body composition, and performance in trained endurance athletes, and to elucidate underlying mechanisms. METHOD: Thirteen (n = 13) trained male cyclists completed a six-week training program consisting of a "Baseline" week (100% of regular training load), a "Build" week (~120% of Baseline load), two "Loading" weeks (~140, 150% of Baseline load, respectively) and two "Recovery" weeks (~80% of Baseline load)...
2018: PloS One
https://www.readbyqxmd.com/read/29434077/low-proportion-of-dietary-plant-protein-among-athletes-with-premenstrual-syndrome-related-performance-impairment
#11
Keiko Yamada, Takashi Takeda
Premenstrual syndrome (PMS) is psychosomatic disorder that are limited to the late luteal phase in the menstrual cycle. PMS could impair athletic performance. To investigate associations between proportions of dietary plant and animal protein and PMS-related impairment of athletic performance, we surveyed 135 female athletes aged 18-23 years attending Kindai University. Participants belonged to authorized university clubs, all of which have high rankings in Japanese university sports. Participants completed self-administered questionnaires on diet history, demographics, and PMS-related impairment of athletic performance...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29433921/modified-perceptual-training-in-sport-a-new-classification-framework
#12
REVIEW
Stephen Mark Hadlow, Derek Panchuk, David Lindsay Mann, Marc Ronald Portus, Bruce Abernethy
OBJECTIVES: To overview a framework that provides a theoretically-grounded approach to predicting the types of modified perceptual training tasks that will stimulate transfer of improved perceptual skills to sport performance environments. Modified perceptual training (MPT) collectively describes on- or off-field sports training tasks that are specifically designed to develop visual and perceptual-cognitive skill. Traditional training approaches in sport include sports vision training and perceptual-cognitive training, while recently, new technologies have enabled a broad range of additional MPT tools to become available to coaches and athletes...
February 3, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29431536/multi-day-pomegranate-extract-supplementation-decreases-oxygen-uptake-during-submaximal-cycling-exercise-but-co-supplementation-with-n-acetylcysteine-negates-the-effect
#13
Emma M Crum, Matthew J Barnes, Stephen R Stannard
Pomegranate extract (POMx) has been suggested as an ergogenic aid, due to its rich concentration of polyphenols, which are proposed to enhance nitric oxide (NO) bioavailability, thereby improving the efficiency of oxygen usage and consequently, endurance exercise performance. Although acute POMx supplementation improves aerobic exercise performance in untrained individuals, trained athletes appear to require chronic supplementation for a similar effect. Further, the combination of POMx with a thiol antioxidant may prove more effective than POMx alone, due to the protective effects of thiols on NO...
February 12, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29427982/exercise-and-asthma
#14
Andréanne Côté, Julie Turmel, Louis-Philippe Boulet
Transient airway narrowing can occur during or following exercise, a phenomenon called exercise-induced bronchoconstriction (EIB). The main mechanism of EIB is considered to be airway dehydration, resulting from increased ventilation during exercise. In asthma, such water loss causes an increase in airway fluid osmolarity, inducing airway smooth muscle contraction following the release of mediators from airway inflammatory cells. Asthmatics frequently experience EIB, but it may also be observed in others not reporting asthma symptoms, particularly elite endurance athletes...
February 2018: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29427565/intensified-training-increases-salivary-free-light-chains-in-trained-cyclists-indication-that-training-volume-increases-oral-inflammation
#15
Jennifer L J Heaney, Sophie C Killer, Ida S Svendsen, Michael Gleeson, John P Campbell
Periods of short-term intensified training (IT) are often used by athletes during training cycles over the season and undergoing phases of increased physical stress may impact upon the immune system. This study investigated the effects of a period of IT on free light chains (FLCs) in saliva - an emerging immune biomarker of oral inflammation - and matched serum samples in well-trained athletes. It also examined if IT influences basal FLC levels and FLC flux during acute exercise. Highly trained male cyclists (n = 10) underwent a 9-day period of IT; before and after IT participants performed a 1 h time trial (TT) on a cycle ergometer, with blood and saliva samples collected pre- and post-exercise...
February 7, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29425972/a-longitudinal-analysis-of-salivary-testosterone-concentrations-and-competitiveness-in-elite-and-non-elite-women-athletes
#16
Blair T Crewther, Christian J Cook
BACKGROUND: There is evidence linking women's T to competitive behaviours in sport and exercise. To advance this work, we examined the longitudinal relationships between salivary testosterone (sal-T) and competitiveness in athletic women who differ in training status. METHODS: Elite (n = 9) and non-elite (n = 21) women athletes were monitored on days 6-8 (follicular phase), 13-15 (ovulatory phase) and 20-22 (Luteal phase) of a menstrual cycle with two repeats...
February 6, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29420813/sport-psychology-for-the-soldier-athlete-a-paradigm-shift
#17
Vanessa M Meyer
Background: Competitive athletes train body and mind in preparation for competition with mental fortitude often providing the "winning edge." Similarly, the current-day warfighter faces significant physical and psychological challenges and must be prepared to respond to life-threatening danger with mental and physical agility. Sport Psychology for the Soldier Athlete recognizes the soldier as an elite athlete and provides training required to perform at the highest caliber. Through this curriculum, mental skills coaching in goal setting, imagery, positive self-talk, and heart rate control is integrated into routine physical fitness training...
February 6, 2018: Military Medicine
https://www.readbyqxmd.com/read/29420349/thyroid-disorders-in-athletes
#18
John R Luksch, Philip B Collins
When athletic performance begins to deteriorate, it is important to identify possible underlying etiologies to explain such a phenomenon. Causes include inadequate nutrition, improper training habits, infection, and hematologic or endocrine diseases. In athletes, a thorough investigation of potentially reversible underlying medical conditions may be warranted when there are noted disruptions in training, competition, and recovery. Thyroid disorders should be considered in athletes in whom such a condition is suspected...
February 2018: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29420150/adaptations-in-muscle-oxidative-capacity-fiber-size-and-oxygen-supply-capacity-after-repeated-sprint-training-in-hypoxia-combined-with-chronic-hypoxic-exposure
#19
Stephan van der Zwaard, Franck Brocherie, Bengt L G Kom, Grégoire P Millet, Louise Deldicque, Willem J van der Laarse, Olivier Girard, Richard T Jaspers
In this study, we investigate adaptations in muscle oxidative capacity, fiber size and oxygen supply capacity in team-sport athletes after six repeated-sprint sessions in normobaric hypoxia or normoxia combined with 14 days of chronic normobaric hypoxic exposure. Lowland elite field hockey players resided at simulated altitude ({greater than or equal to}14 h∙d-1 at 2800-3000 m) and performed regular training plus six repeated-sprint sessions in normobaric hypoxia (3000 m; LHTLH; n=6) or normoxia (0 m, LHTL; n=6) or lived at sea level with regular training only (LLTL; n=6)...
February 8, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29420058/athletic-training-student-core-competency-implementation-during-patient-encounters
#20
Julie M Cavallario, Bonnie L Van Lunen, Johanna M Hoch, Matthew Hoch, Sarah A Manspeaker, Shana L Pribesh
CONTEXT: Health care research evidence suggests that early patient encounters (PEs), as well as the purposeful implementation of professional core competencies (CCs), for athletic training students (ATSs) may be beneficial to their ability to provide care. However, no investigators have related facets of the clinical education experience with CC implementation as a form of summative assessment of the clinical experience. OBJECTIVE: To determine the relationship between the frequency and length of PEs, as well as the student's role and clinical site during PEs, and the students' perceived CC implementation during these encounters...
February 8, 2018: Journal of Athletic Training
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