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https://www.readbyqxmd.com/read/28647869/muscular-viscoelastic-characteristics-of-athletes-participating-in-the-european-master-indoor-athletics-championship
#1
Marco Gervasi, Davide Sisti, Stefano Amatori, Marco Andreazza, Piero Benelli, Piero Sestili, Marco Bruno Luigi Rocchi, Anna Rita Calavalle
PURPOSE: To investigate how the viscoelastic characteristics of muscles (non-neural tone, elasticity and stiffness) vary as a function of age and gender in a sample of track and field master athletes. To compare these findings with data on related sedentary subjects in literature. METHODS: A total of 390 athletes (aged 35-99) were assessed during the European Master Athletics Indoor Championship 2016. A non-invasive measurement device called MyotonPro was used to measure tone, stiffness, and elasticity in the biceps brachii and rectus femoris muscles at rest...
June 24, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28647809/left-ventricles-of-aging-athletes-better-untwisters-but-not-more-relaxed-during-exercise
#2
Claire Maufrais, G Doucende, T Rupp, M Dauzat, P Obert, S Nottin, I Schuster
OBJECTIVE: With an aging population and the increasing prevalence of heart failure with preserved ejection fraction, developing strategies to prevent diastolic dysfunction is crucial. Regular endurance training has been suggested to be one such strategy. However, the underlying mechanisms of training, including the effect on left ventricular (LV) untwist, which promotes LV filling, are unclear and studies exploring the heart during exercise in the aging heart are lacking. METHODS: Cardiopulmonary exercise testing with speckle tracking echocardiography was realized in male subjects: 16 young athletes (YA), 19 young controls (YC), 22 middle-aged athletes (MA) with a lifelong history of endurance training, and 20 middle-aged controls (MC)...
June 24, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28646812/oral-consumption-of-vitamin-k2-for-8-weeks-associated-with-increased-maximal-cardiac-output-during-exercise
#3
Brian K McFarlin, Andrea L Henning, Adam S Venable
Background • Vitamin K1 and K2 are not typically common in a Western diet because they are found in a variety of fermented foods. Vitamin K2 in particular has been demonstrated to restore mitochondrial function and has a key role in production of mitochondrial adenosine triphosphate. Thus, it is reasonable to speculate that dietary supplementation with vitamin K2 could increase the function of muscle with high mitochondrial content (ie, skeletal and cardiac muscle). Objective • The purpose of this study was to determine if 8 wk of dietary supplementation with Vitamin K2 could alter cardiovascular responses to a graded cycle ergometer test...
July 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28646101/serum-androgen-profile-and-physical-performance-in-women-olympic-athletes
#4
Emma Eklund, Bo Berglund, Fernand Labrie, Kjell Carlström, Lena Ekström, Angelica Lindén Hirschberg
BACKGROUND: The role of endogenous androgens for body composition and physical performance in women athletes is still not elucidated. AIM: To examine the serum androgen profile in relation to body composition and physical performance in women Olympic athletes and to compare endocrine variables and body composition to controls. STUDY DESIGN: Cross-sectional study, conducted between 2011 and 2015 at the Women's Health Research Unit, Karolinska University Hospital, Stockholm...
June 23, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28646100/the-athlete-monitoring-cycle-a-practical-guide-to-interpreting-and-applying-training-monitoring-data
#5
EDITORIAL
Tim J Gabbett, George P Nassis, Eric Oetter, Johan Pretorius, Nick Johnston, Daniel Medina, Gil Rodas, Tom Myslinski, Dan Howells, Adam Beard, Allan Ryan
No abstract text is available yet for this article.
June 23, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28645497/an-association-between-polymorphisms-within-the-apoe-gene-and-concussion-aetiology-in-rugby-union-players
#6
Shameemah Abrahams, Sarah Mc Fie, Jon Patricios, Jason Suter, Michael Posthumus, Alison V September
OBJECTIVES: Concussion refers to changes in neurological function due to biomechanical forces transmitted to the head. The APOE ε4 allele is associated with brain injury severity. The objective was to determine if APOE gene variants are associated with concussion history and severity in rugby players. DESIGN: In total, 128 non-concussed controls and 160 previously concussed participants (all cases N=160; diagnosed N=139) were recruited from high school (junior, N=121), club (N=116) and professional rugby teams (N=51)...
June 8, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28645495/validity-and-reliability-of-the-mytemp-ingestible-temperature-capsule
#7
Coen C W G Bongers, Maria T E Hopman, Thijs M H Eijsvogels
OBJECTIVES: An accurate and non-invasive measurement of core body temperature (Tc) is of great importance to quantify exercise-induced increases in Tc in athletes or to assess changes in Tc in patient populations. The use of ingestible gastrointestinal telemetric temperature capsules is widely accepted as a surrogate marker for Tc, but widespread implementation is lacking due to the high costs of these disposable capsules. A new and cheaper temperature capsule system (i.e. myTemp) was recently introduced...
June 8, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28644933/survey-of-hand-and-upper-extremity-injuries-among-rock-climbers
#8
Clayton E Nelson, Ghazi M Rayan, Dustin I Judd, Kai Ding, Julie A Stoner
BACKGROUND: Rock climbing first evolved as a sport in the late 18th century. With its growing popularity, the number of rock climbing-related injuries has potential to increase, spurring a rise in the number of articles associated with it. Despite the available literature, there remains a paucity of information about upper extremity injuries sustained by rock climbers, and no studies to date have focused on gender-specific injuries. METHODS: A 24-question online survey was distributed to rock climbers about upper extremity injuries sustained during rock climbing...
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28644776/eye-injuries-in-high-school-and-collegiate-athletes
#9
Barry P Boden, Lauren A Pierpoint, Rebecca G Boden, R Dawn Comstock, Zachary Y Kerr
BACKGROUND: Although eye injuries constitute a small percentage of high school and college sports injuries, they have the potential to be permanently debilitating. HYPOTHESIS: Eye injury rates will vary by sport, sex, and between the high school and college age groups. STUDY DESIGN: Descriptive epidemiology study. LEVEL OF EVIDENCE: Level 3. METHODS: Data from eye injury reports in high school and college athletes were obtained from the National High School Sports-Related Injury Surveillance System, High School Reporting Information Online (HS RIO) database over a 10-year span (2005-2006 through 2014-2015 school years) and the National Collegiate Athletic Association (NCAA) Injury Surveillance Program (ISP) over an 11-year span (2004-2005 through 2014-2015 school years)...
June 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28644678/professional-athletes-return-to-play-and-performance-after-operative-repair-of-an-achilles-tendon-rupture
#10
David P Trofa, J Chance Miller, Eugene S Jang, Denzel R Woode, Justin K Greisberg, J Turner Vosseller
BACKGROUND: Most Achilles tendon ruptures are sports related. However, few studies have examined and compared the effect of surgical repair for complete ruptures on return to play (RTP), play time, and performance across multiple sports. PURPOSE: To examine RTP and performance among professional athletes after Achilles tendon repair and compare pre- versus postoperative functional outcomes of professional athletes from different major leagues in the United States...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28644677/young-athletes-after-anterior-cruciate-ligament-reconstruction-with-single-leg-landing-asymmetries-at-the-time-of-return-to-sport-demonstrate-decreased-knee-function-2-years-later
#11
Matthew P Ithurburn, Mark V Paterno, Kevin R Ford, Timothy E Hewett, Laura C Schmitt
BACKGROUND: Previous work shows that young athletes after anterior cruciate ligament reconstruction (ACLR) demonstrate single-leg (SL) landing movement asymmetries at the time of return to sport (RTS); however, the effect of movement asymmetries on longitudinal knee-related function after ACLR has not been examined. Hypothesis/Purpose: The purpose of this study was to examine the effect of SL drop-landing movement symmetry at the time of RTS on knee-related function 2 years later in young athletes after ACLR...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28644195/considerations-for-selecting-field-based-strength-and-power-fitness-tests-to-measure-asymmetries
#12
Chris Bishop, Anthony Turner, Shyam Chavda, Paul Jarvis, Paul Read
The prevalence of lower limb asymmetries has been reported in numerous studies; however, methodological differences exist in the way they can be detected. Strength and jumping-based tasks have been most commonly used to examine these differences across both athlete and non-athlete populations. The aim of this review was to critically analyze the utility of strength and jumping tests that are frequently used to measure asymmetry. Reliability, validity, and considerations for assessment are examined to enhance test accuracy and effectiveness in the quantification of asymmetries during strength and jumping-based tasks...
June 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28644194/phase-characteristics-of-the-countermovement-jump-force-time-curve-a-comparison-of-athletes-by-jumping-ability
#13
Christopher J Sole, Satoshi Mizuguchi, Kimitake Sato, Gavin L Moir, Michael H Stone
The purpose of this study was to compare the phase characteristics of the countermovement jump (CMJ) force time (F-t) curve between athletes based on jumping ability. An initial sample of one-hundred and fifty Division-I collegiate athletes were ranked based on CMJ jump height. Three performance groups were then formed by taking the top, middle, and lower thirty athletes (15 male and 15 female) from the sample. Phases of the CMJ F-t curve were determined and then characterized by their duration, magnitude, area (impulse), and shape (shape factor)...
June 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28644159/investigation-of-the-rosenbaum-concussion-knowledge-and-attitudes-survey-in-collegiate-athletes
#14
Erin B Chapman, Alan Nasypany, Jim May, Timothy Henry, Chris Hummel, Hyung-Pil Jun
OBJECTIVE: The purpose of this study is to determine whether the Rosenbaum Concussion Knowledge and Attitudes Survey (RoCKAS) is an appropriate outcome measure to assess knowledge and attitudes toward concussion in collegiate student-athletes as determined through validity and reliability testing. STUDY DESIGN: Convenience study. SETTING: The researcher recruited all athletic teams at a Division III National Collegiate Athletic Association institution...
June 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28644052/a-little-dab-will-do-ya-in-a-case-report-of-neuro-and-cardiotoxicity-following-use-of-cannabis-concentrates
#15
Shannon S Rickner, Dazhe Cao, Kurt Kleinschmidt, Steven Fleming
CONTEXT: The use of marijuana and cannabis concentrates is increasing, especially following decriminalization in several states. Psychosis and cardiotoxicity have been reported following cannabis use; however, myocardial injury from "dabbing" has not yet been reported. We report a case of hyperthermia, tachycardia, hypertension, severe agitation, neuro-, and cardiotoxicity following the use of "dabs" where there is concomitant confirmatory biological and sample testing. CASE DETAILS: A 17-year-old athletic man developed agitation requiring sedation and intubation for safety, with peak systolic blood pressures in the 190s and hyperthermia (to 102 °F)...
June 23, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28643129/magnetohydrodynamic-voltage-recorder-for-comparing-peripheral-blood-flow
#16
Kevin J Wu, T Stan Gregory, Michael C Lastinger, Jonathan R Murrow, Zion Tsz Ho Tse
Blood flow is a clinical metric for monitoring of cardiovascular diseases but current measurements methods are costly or uncomfortable for patients. It was shown that the interaction of the magnetic field (B 0) during MRI and blood flow in the body, through the magnetohydrodynamic (MHD) effect, produce voltages (V MHD) observable through intra-MRI electrocardiography (ECG), which are correlated with regional blood flow. This study shows the reproducibility of V MHD outside the MRI and its application in a portable flow monitoring device...
June 22, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28642676/international-society-of-sports-nutrition-position-stand-protein-and-exercise
#17
REVIEW
Ralf Jäger, Chad M Kerksick, Bill I Campbell, Paul J Cribb, Shawn D Wells, Tim M Skwiat, Martin Purpura, Tim N Ziegenfuss, Arny A Ferrando, Shawn M Arent, Abbie E Smith-Ryan, Jeffrey R Stout, Paul J Arciero, Michael J Ormsbee, Lem W Taylor, Colin D Wilborn, Doug S Kalman, Richard B Kreider, Darryn S Willoughby, Jay R Hoffman, Jamie L Krzykowski, Jose Antonio
The International Society of Sports Nutrition (ISSN) provides an objective and critical review related to the intake of protein for healthy, exercising individuals. Based on the current available literature, the position of the Society is as follows:An acute exercise stimulus, particularly resistance exercise, and protein ingestion both stimulate muscle protein synthesis (MPS) and are synergistic when protein consumption occurs before or after resistance exercise.For building muscle mass and for maintaining muscle mass through a positive muscle protein balance, an overall daily protein intake in the range of 1...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28642659/sports-injuries-among-amateur-athletes-at-a-brazilian-university
#18
André Marangoni Asperti, Tiago Lazzaretti Fernandes, André Pedrinelli, Arnaldo José Hernandez
OBJECTIVE: To obtain information on the incidence and nature of sports injuries at a Brazilian university. METHOD: Data from 396 student amateur athletes (61% male) playing 15 different sports during the 2013 season were retrospectively evaluated. Subjects completed the National Collegiate Athletic Association Injury Surveillance System questionnaire at the conclusion of the 2013 sports season. Injuries that resulted in at least one day of time lost were included...
March 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28642223/performing-high-level-sport-is-strongly-associated-with-urinary-incontinence-in-elite-athletes-a-comparative-study-of-372-elite-female-athletes-and-372-controls
#19
Alice Carvalhais, Jorge Renato Natal, Kari Bø
OBJECTIVE: To evaluate the prevalence of urinary incontinence (UI) in female elite athletes compared with controls and to investigate potential risk factors for UI among elite athletes. METHODS: This cross-sectional study included 372 elite athletes (athletes group, AG) and 372 age-matched controls (control group, CG). The median age was low (19 years) and the vast majority were nulliparous. Potential risk factors, including clinical, demographic and sports practice characteristics, were collected by using a questionnaire...
June 22, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28642221/exercise-and-pregnancy-in-recreational-and-elite-athletes-2016-17-evidence-summary-from-the-ioc-expert-group-meeting-lausanne-part-3-exercise-in-the-postpartum-period
#20
Kari Bø, Raul Artal, Ruben Barakat, Wendy J Brown, Gregory A L Davies, Michael Dooley, Kelly R Evenson, Lene A H Haakstad, Bengt Kayser, Tarja I Kinnunen, Karin Larsén, Michelle F Mottola, Ingrid Nygaard, Mireille van Poppel, Britt Stuge, Karim M Khan, Ioc Medical Commission
No abstract text is available yet for this article.
June 22, 2017: British Journal of Sports Medicine
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