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https://www.readbyqxmd.com/read/28436284/exertional-heat-illness-among-secondary-school-athletes
#1
Jill Rodgers, Peggy Slota, Beth Zamboni
Exertional heat illness (EHI) is a leading cause of preventable death among student athletes. While causes and preventative measures for EHI are known, school districts may not be implementing evidence-based practices. This descriptive, exploratory study explored school policies, resources, and practices of coaches in a mid-Atlantic state in the prevention and identification of EHI; 397 responded. Ninety-three percent knew of EHI, but only 52% scheduled acclimatization. Coaches reporting a heat emergency plan (56%) were significantly more likely to follow other evidence-based recommendations: altering equipment ( p < ...
January 1, 2017: Journal of School Nursing: the Official Publication of the National Association of School Nurses
https://www.readbyqxmd.com/read/28431408/the-effects-of-exercise-modality-during-additional-high-intensity-interval-training-upon-aerobic-fitness-and-strength-in-powerlifting-and-strongman-athletes
#2
Patroklos Androulakis-Korakakis, Louis Langdown, Adam Lewis, James Fisher, Paulo Gentil, Antonio Paoli, James Steele
Powerlifters and strongman athletes have a necessity for optimal levels of muscular strength whilst maintaining sufficient aerobic capacity to perform and recover between events. HIIT has been popularized for its efficacy in improving both aerobic fitness and strength but never assessed within the aforementioned population group. The present study looked to compare the effect of exercise modality, e.g. a traditional aerobic mode (AM), and strength mode, (SM), during HIIT upon aerobic fitness and strength. Sixteen well resistance trained male participants, currently competing in powerlifting and strongman events, completed 8 weeks of approximately effort- and volume-matched HIIT in 2 groups: AM (cycling, n=8) and SM (resistance training, n=8)...
April 21, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28430941/vagal-third-degree-atrioventricular-block-in-a-highly-trained-endurance-athlete
#3
Alejandro Vidal, Valentina Agorrody, Rodrigo Abreu, Pablo Viana, Alejandro Dodera, Luis Vidal
No abstract text is available yet for this article.
April 18, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28430758/the-refractive-error-of-professional-baseball-players
#4
Daniel M Laby, David G Kirschen
PURPOSE: High levels of visual acuity are required to hit a baseball effectively. Research has shown that any decrease in vision is likely caused by low-order optical aberrations. This study is designed to validate the SVOne autorefractor, and describe the amount and type, of low-order optical aberrations present in a large cohort of professional baseball players. METHODS: A retrospective chart review on the 608 Major League Baseball players evaluated during the 2016 Spring Training Season was performed...
May 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28430553/sport-concussion-management-using-facebook-a-feasibility-study-of-an-innovative-adjunct-icon
#5
Osman Hassan Ahmed, Anthony G Schneiders, Paul R McCrory, S John Sullivan
CONTEXT:   Sport concussion is currently the focus of much international attention. Innovative methods to assist athletic trainers in facilitating management after this injury need to be investigated. OBJECTIVE:   To investigate the feasibility of using a Facebook concussion-management program termed iCon (interactive concussion management) to facilitate the safe return to play (RTP) of young persons after sport concussion. DESIGN:   Observational study...
April 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28430550/round-table-on-malignant-hyperthermia-in-physically-active-populations-meeting-proceedings
#6
Yuri Hosokawa, Douglas J Casa, Henry Rosenberg, John F Capacchione, Emmanuel Sagui, Sheila Riazi, Luke N Belval, Patricia A Deuster, John F Jardine, Stavros A Kavouras, Elaine C Lee, Kevin C Miller, Sheila M Muldoon, Francis G O'Connor, Scott R Sailor, Nyamkhishig Sambuughin, Rebecca L Stearns, William M Adams, Robert A Huggins, Lesley W Vandermark
CONTEXT:   Recent case reports on malignant hyperthermia (MH)-like syndrome in physically active populations indicate potential associations among MH, exertional heat stroke (EHS), and exertional rhabdomyolysis (ER). However, an expert consensus for clinicians working with these populations is lacking. OBJECTIVE:   To provide current expert consensus on the (1) definition of MH; (2) history, etiology, and pathophysiology of MH; (3) epidemiology of MH; (4) association of MH with EHS and ER; (5) identification of an MH-like syndrome; (6) recommendations for acute management of an MH-like syndrome; (7) special considerations for physically active populations; and (8) future directions for research...
April 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28426514/comparison-of-the-hang-high-pull-and-loaded-jump-squat-for-the-development-of-vertical-jump-and-isometric-force-time-characteristics
#7
Dustin J Oranchuk, Tracey L Robinson, Zachary J Switaj, Eric J Drinkwater
Weightlifting movements have high skill demands and require expert coaching. Loaded jumps have a comparably lower skill demand, but may be similarly effective for improving explosive performance. The purpose of this study was to compare vertical jump performance, isometric force, and rate of force development (RFD) following a ten-week intervention employing the hang high-pull (hang-pull) or trap-bar jump squat (jump-squat). Eighteen NCAA Division II swimmers (8 males, 10 females) with at least one year of resistance training experience volunteered to participate...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28426511/an-evaluation-of-time-trial-based-predictions-of-v-combining-dot-above-o2max-and-recommended-training-paces-for-collegiate-and-recreational-runners
#8
E M Scudamore, V W Barry, J M Coons
The purpose of the current study was to determine the accuracy of Jack Daniels' VDOT Running Calculator for the prediction of V[Combining Dot Above]O2max, and recommendations of interval and training paces (pIN & pTH) in samples of NCAA Division 1 track athletes (ATH, n = 11) and recreational runners (REC; n = 9). Predicted variable data were obtained using results from indoor 5km time-trials. Data from the VDOT calculator was compared to laboratory tested V[Combining Dot Above]O2max, pace at V[Combining Dot Above]O2max (V[Combining Dot Above]O2maxpace), and lactate threshold pace (LTpace)...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28424849/ultrasound-evaluation-of-the-ulnar-collateral-ligament-of-the-elbow-which-method-is-most-reproducible
#9
Mehool Shukla, Robert Keller, Nathan Marshall, Hafeez Ahmed, Courtney Scher, Vasilios Bill Moutzouros, Marnix van Holsbeeck
INTRODUCTION: The ulnar collateral ligament (UCL) is an important medial stabilizer of the elbow, particularly in overhead-throwing athletes. However, there is no universally accepted method for evaluating UCL thickness with ultrasound (US). OBJECTIVE: To assess reproducibility of previously published methods, as well as a modified technique, for evaluating the UCL via US. We hypothesize that a modified technique would show greater reproducibility. MATERIAL AND METHODS: Using US, the thickness of the UCL in 50 volunteers was measured by two musculoskeletal trained radiologists using two different measurement techniques...
April 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28423014/initial-systemic-inflammatory-state-perturbs-exercise-training-adaptations-in-elite-taekwondo-athletes
#10
Chung-Yu Chen, Yi-Hung Liao, Chun-Chung Chou, Yu-Chi Sung, Shiow-Chwen Tsai
PURPOSE: This study examined ten-week TKD-specific training effects on aerobic capacity, body composition, hormone responses and hematological parameters in elite TKD athletes with varied initial inflammatory states. METHODS: Twenty-two elite college TKD athletes were divided into two groups according to their initial neutrophils-to-lymphocytes ratio (NLR) values: Low NLR (N = 11, 9M/2F, age: 21.6 ± 1.0 yrs; NLR: 1.3 ± 0.2) and High NLR (N = 11, 8M/3F, age: 22...
2017: PloS One
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/28422523/can-the-lamberts-submaximal-cycle-test-reflect-overreaching-in-professional-cyclists
#12
Lieselot Decroix, Robert P Lamberts, Romain Meeusen
PURPOSE: The Lamberts and Lambert Submaximal Cycle Test (LSCT) consists of 3 stages during which cyclist's cycle for 6 minutes at 60%, 6 minutes at 80% and 3 minutes at 90% of their maximal heart rate, followed by one-minute recovery. It was the aim of this study to determine if the LSCT is able to reflect a state of functional overreaching in professional female cyclists during an 8-day training camp and the following recovery days. METHODS: Six professional female cyclists performed an LSCT on day 1, day 5 and day 8 of the training camp and 3 days after the training camp...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28417093/instability-resistance-training-for-health-and-performance
#13
REVIEW
Erika Zemková
Recently, resistance exercises performed on an unstable surface have become part of athletic training and rehabilitation. Accordingly, their role in performance and health-oriented strength training has increasingly emerged as a matter of interest to researchers and conditioning specialists. A more pronounced activation of stabilizing muscles is assumed to be the main feature of instability resistance exercises. This assumption has been proven by EMG studies, which have highlighted significantly greater electromyographic activity of trunk-stabilizing muscles during exercises under unstable as compared to stable conditions...
April 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28416894/letter-to-the-editor-a-genetic-based-algorithm-for-personalized-resistance-training
#14
A Karanikolou, G Wang, Y Pitsiladis
In a recent paper entitled "A genetic-based algorithm for personalized resistance training", Jones et al. [1] presented an algorithm of 15 performance-associated gene polymorphisms that they propose can determine an athlete's training response by predicting power and endurance potential. However, from the design of their studies and the data provided, there is no evidence to support these authors' assertions. Progress towards such a significant development in the field of sport and exercise genomics will require a paradigm shift in line with recent recommendations for international collaborations such as the Athlome Project (see www...
March 2017: Biology of Sport
https://www.readbyqxmd.com/read/28416154/a-comparison-of-dicarbonyl-stress-and-advanced-glycation-endproducts-in-lifelong-endurance-athletes-vs-sedentary-controls
#15
Martijn F H Maessen, Casper G Schalkwijk, Rebecca J H M Verheggen, Vincent L Aengevaeren, Maria T E Hopman, Thijs M H Eijsvogels
OBJECTIVES: Dicarbonyl stress and high concentrations of advanced glycation endproducts (AGEs) relate to an elevated risk for cardiovascular diseases (CVD). Exercise training lowers the risk for future CVD. We tested the hypothesis that lifelong endurance athletes have lower dicarbonyl stress and AGEs compared to sedentary controls and that these differences relate to a better cardiovascular health profile. DESIGN: Cross-sectional study. METHODS: We included 18 lifelong endurance athletes (ATH, 61±7years) and 18 sedentary controls (SED, 58±7years) and measured circulating glyoxal (GO), methylglyoxal (MGO) and 3-deoxyglucosone (3DG) as markers of dicarbonyl stress...
March 23, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28415084/p260right-cardiac-chambers-remodeling-in-marathon-and-ultra-trail-athletes-detected-by-speckle-tracking-echocardiography
#16
K Ujka, R M Bruno, B Catuzzo, L Bastiani, A Tonacci, G D'angelo, S Mrakic-Sposta, A Vezzoli, G Giardini, L Pratali
Background: Strenuous and chronic exercise training can have detrimental effects on cardiac morphology and function. Our aim was to evaluate the cardiac adaptation between 2 different specialties' endurance athletes: marathon runners (M) and ultra-trailers (UT). Methods: 47 M (age 45±7, men 32; training: 18 (9-53) years*days/week), 41 UT (age 42±9, men 38, training: 30 (15-66) years*days/week) were submitted in rest condition to conventional 2D echocardiography and Speckle-Tracking echo (STE) (Beyond Diogenes 2...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28415065/acute-effect-of-biomechanical-muscle-stimulation-on-the-counter-movement-vertical-jump-power-and-velocity-in-division-i-football-players
#17
Bert H Jacobson, Taylor P Monaghan, John H Sellers, Eric C Conchola, Zach K Pope, Rob G Glass
Jacobson, BH, Monaghan, TP, Sellers, JH, Conchola, EC, Pope, ZK, and Glass, RG. Acute effect of biomechanical muscle stimulation on the counter-movement vertical jump power and velocity in division I football players. J Strength Cond Res 31(5): 1259-1264, 2017-Research regarding whole body vibration (WBV) largely supports such training augmentation in attempts to increase muscle strength and power. However, localized biomechanical vibration has not received the same attention. The purpose of this study was to assess peak and average power before and after acute vibration of selected lower-body sites in division I athletes...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28412479/cough-in-exercise-and-athletes
#18
REVIEW
J H Hull, J W Dickinson, A R Jackson
Cough is the most common respiratory symptom reported by athletes and can significantly impact on health status, ability to train and athletic performance. The presence of cough in an athlete is typically taken to indicate exercise-induced bronchoconstriction (EIB), yet in many athletes with chronic cough there is no objective evidence of airway hyper-responsiveness (AHR) or heightened airway inflammation. Moreover, cough in athletes often fails to respond to a therapeutic asthma strategy, thus further work is urgently needed to progress our understanding of the pathophysiology of exercise-associated cough in this unique population...
April 12, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28410999/impact-of-time-and-work-rest-ratio-matched-sprint-interval-training-programmes-on-performance-a-randomised-controlled-trial
#19
Molly C Lloyd Jones, Martyn G Morris, John R Jakeman
OBJECTIVES: The aim of this study was to examine the effects of a short training intervention using two repeated sprint protocols matched for total sprint duration and work:rest ratio. DESIGN: Randomised-controlled trial. METHODS: Thirty physically active males were randomly allocated to one of two sprint training groups: a 6s group, a 30s group or a non-exercising control. The training groups were matched for work:rest ratio and total sprint time per session, and completed 6 training sessions over a 2-week period...
March 31, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28410328/manipulation-of-muscle-creatine-and-glycogen-changes-dual-x-ray-absorptiometry-estimates-of-body-composition
#20
Julia L Bone, Megan L Ross, Kristyen A Tomcik, Nikki A Jeacocke, Will G Hopkins, Louise M Burke
Standardizing a dual x-ray absorptiometry (DXA) protocol is thought to provide a reliable measurement of body composition. PURPOSE: We investigated the effects of manipulating muscle glycogen and creatine content independently and additively on DXA estimates of lean mass. METHOD: Eighteen well-trained male cyclists undertook a parallel group application of creatine loading (n = 9) (20 g·d for 5 d loading; 3 g·d maintenance) or placebo (n = 9) with crossover application of glycogen loading (12 v 6 g·kg BM per day for 48 h) as part of a larger study involving a glycogen-depleting exercise protocol...
May 2017: Medicine and Science in Sports and Exercise
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