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https://www.readbyqxmd.com/read/28338445/socioeconomic-status-and-outcomes-after-sport-related-concussion-a-preliminary-investigation
#1
Scott L Zuckerman, Brian Holt Zalneraitis, Douglas J Totten, Kolin E Rubel, Andrew W Kuhn, Aaron M Yengo-Kahn, Christopher M Bonfield, Allen K Sills, Gary S Solomon
OBJECTIVE A significant proportion of patients experience long-term symptoms after sport-related concussion (SRC), and several factors have been associated with this protracted recovery. Limited data exist on the role of socioeconomic status (SES) on SRC outcomes. The objective in this study was to conduct a preliminary investigation to determine the effect of SES on outcomes after SRC in student-athletes treated at a regional sports concussion center. METHODS A retrospective cohort study of 282 middle school, high school, and collegiate student-athletes was conducted...
March 24, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28338405/physiological-responses-to-treadmill-running-with-body-weight-support-in-hypoxia-compared-to-normoxia
#2
Ben J Lee, Charles Douglas Thake
CONTEXT: Anecdotal reports suggest elite sports clubs combine lower body positive pressure (LBPP) rehabilitation with a hypoxic stimulus in order to maintain or increase physiological and metabolic strain, which are reduced during LBPP. However the effects of hypoxia on cardiovascular and metabolic response during LBPP rehabilitation is unknown. OBJECTIVE: Evaluate the use of normobaric hypoxia as a means to increase physiological strain during body weight supported (BWS) running...
March 24, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28338358/a-mismatch-between-athlete-practice-and-current-sports-nutrition-guidelines-among-elite-female-and-male-middle-and-long-distance-athletes
#3
Ida Aliisa Heikura, Trent Stellingwerff, Antti A Mero, Arja Leena Tuulia Uusitalo, Louise Mary Burke
Contemporary nutrition guidelines promote a variety of periodized and time-sensitive recommendations, but current information regarding the knowledge and practice of these strategies among world-class athletes is limited. The aim of this study was to investigate this theme by implementing a questionnaire on dietary periodization practices in national/international level female (n=27) and male (n=21) middle- and long-distance runners/race-walkers. The questionnaire aimed to gain information on between and within-day dietary choices, as well as timing of pre- and post-training meals and practices of training with low or high carbohydrate (CHO) availability...
March 24, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28337890/beneficial-effects-of-protein-hydrolysates-in-exercise-and-sports-nutrition
#4
J Yuan, B Jiang, K Li, W Shen, J L Tang
Protein hydrolysates (PH) are rich sources of proteins that supply the need of exercising muscles. PHs are enriched in di- and tripeptides and are better than free amino acids or intact proteins when muscle anabolic effect is considered. Digestion, absorption and muscle uptake of amino acids are faster and more efficient when PH is ingested in comparison to the respective intact protein. PHs not only enhance endurance in high intensity exercise regimen, but also help in faster post-exercise recovery of muscle by promoting glycogen synthesis, although the latter effect requires more convincing evidence...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28334382/concussion-like-symptom-reporting-in-non-concussed-collegiate-athletes
#5
Breton M Asken, Aliyah R Snyder, James R Clugston, Leslie S Gaynor, Molly J Sullan, Russell M Bauer
Objective: Non-concussed individuals may report a variety of concussion-like symptoms even in the absence of a diagnosed brain injury. Previous studies described concussion-like symptom reporting in adolescent athletes. This study provides complementary data on concussion-like symptoms in collegiate athletes. Methods: We analyzed baseline symptom scales from 738 collegiate athletes (452 men and 286 women) who completed either the Sport Concussion Assessment Tool, 3 Symptom Evaluation (S3SE; n = 377) or the Post-Concussion Scale (PCS; n = 361) and determined if subjects met criteria for diagnosis of International Classification of Diseases 10th Revision (ICD-10) postconcussional syndrome...
March 10, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28332113/the-critical-power-concept-applications-to-sports-performance-with-a-focus-on-intermittent-high-intensity-exercise
#6
REVIEW
Andrew M Jones, Anni Vanhatalo
The curvilinear relationship between power output and the time for which it can be sustained is a fundamental and well-known feature of high-intensity exercise performance. This relationship 'levels off' at a 'critical power' (CP) that separates power outputs that can be sustained with stable values of, for example, muscle phosphocreatine, blood lactate, and pulmonary oxygen uptake ([Formula: see text]), from power outputs where these variables change continuously with time until their respective minimum and maximum values are reached and exercise intolerance occurs...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28324999/surface-electromyography-based-muscle-fatigue-analysis-for-stroke-patients-at-different-brunnstrom-stages
#7
Yinjun Tu, Zhe Zhang, Xudong Gu, Qiang Fang
Muscle fatigue analysis has been an important topic in sport and rehabilitation medicine due to its role in muscle performance evaluation and pathology investigation. This paper proposes a surface electromyography (sEMG) based muscle fatigue analysis approach which was specifically designed for stroke rehabilitation applications. 14 stroke patients from 5 different Brunnstrom recovery stage groups were involved in the experiment and features including median frequency and mean power frequency were extracted from the collected sEMG samples for investigation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28322596/motor-imagery-during-action-observation-increases-eccentric-hamstring-force-an-acute-non-physical-intervention
#8
Matthew Scott, Stephen Taylor, Paul Chesterton, Stefan Vogt, Daniel Lloyd Eaves
PURPOSE: Rehabilitation professionals typically use motor imagery (MI) or action observation (AO) to increase physical strength for injury prevention and recovery. Here we compared hamstring force gains for MI during AO (AO + MI) against two pure MI training groups. MATERIALS AND METHODS: Over a 3-week intervention physically fit adults imagined Nordic hamstring exercises in both legs and synchronized this with a demonstration of the same action (AO + MI), or they purely imagined this action (pure MI), or imagined upper-limb actions (pure MI-control)...
March 21, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28320567/gender-differences-in-concussion-and-postinjury-cognitive-findings-in-an-older-and-younger-pediatric-population
#9
Sarah Tanveer, Nassim Zecavati, Elizabeth Bronson Delasobera, Temitayo Oyefunmike Oyegbile
BACKGROUND: Studies have documented gender differences associated with concussion. The purpose of this study was to determine if these gender differences are also noted within a pediatric population. METHODS: This prospective study analyzed 1971 patients who had completed preconcussion and postconcussion neuropsychological testing within the Washington, DC, area. RESULTS: Our results showed that children and adolescents with concussion exhibit gender differences with respect to risk factors, recovery, and symptomatology...
February 9, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28316263/individualised-dietary-strategies-for-olympic-combat-sports-acute-weight-loss-recovery-and-competition-nutrition
#10
Reid Reale, Gary Slater, Louise M Burke
Olympic combat sports separate athletes into weight divisions, in an attempt to reduce size, strength, range and/or leverage disparities between competitors. Official weigh-ins are conducted anywhere from 3 and up to 24 h prior to competition ensuring athletes meet weight requirements (i.e. have 'made weight'). Fighters commonly aim to compete in weight divisions lower than their day-to-day weight, achieved via chronic and acute manipulations of body mass (BM). Although these manipulations may impair health and absolute performance, their strategic use can improve competitive success...
March 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28314523/detection-of-anabolic-and-androgenic-steroids-and-or-their-esters-in-horse-hair-using-ultra-high-performance-liquid-chromatography-high-resolution-mass-spectrometry
#11
Karen Y Kwok, Timmy L S Choi, Wai Him Kwok, Jenny K Y Wong, Terence S M Wan
Anabolic and androgenic steroids (AASs) are a class of prohibited substances banned in horseracing at all times. The common approach for controlling the misuse of AASs in equine sports is by detecting the presence of AASs and/or their metabolites in urine and blood samples using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS). This approach, however, often falls short as the duration of effect for many AASs are longer than their detection time in both urine and blood...
March 6, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28301436/the-effects-of-recovery-duration-during-high-intensity-interval-exercise-on-time-spent-at-high-rates-of-oxygen-consumption-oxygen-kinetics-and-blood-lactate
#12
Ilias Smilios, Aristides Myrkos, Andreas Zafeiridis, Argyris Toubekis, Apostolos Spassis, Savas P Tokmakidis
The recovery duration and the work to recovery ratio are important aspects to consider when designing a high-intensity aerobic interval exercise (HIIE). This study examined the effects of recovery duration on total exercise time performed above 80, 90 and 95% of maximum oxygen consumption (VO2max) and heart rate (HRmax) during a single-bout HIIE. We also evaluated the effects on VO2 and HR kinetics, blood lactate concentration and rating of perceived exertion (RPE). Eleven moderately trained males (22.1±1 yrs...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28287684/the-value-of-sleep-on-athletic-performance-injury-and-recovery-in-the-young-athlete
#13
Elizabeth A Copenhaver, Alex B Diamond
Adequate sleep can easily become compromised as student-athletes try to balance the multiple demands on their time. People with sleep deficiency are at increased risk for acute illnesses, traumatic sports injuries, and development of chronic diseases. Training sessions or competitions during extremely early or late hours can interfere with circadian and homeostatic rhythms. Adjusting the training schedule to improve sleep duration has a significantly positive impact on several aspects of athletic performance...
March 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28282741/effects-of-acute-exercise-dehydration-and-rehydration-on-cognitive-function-in-well-trained-athletes
#14
Christopher Irwin, Nadia Campagnolo, Elizaveta Iudakhina, Gregory R Cox, Ben Desbrow
This study investigated the effects of aerobic exercise, fluid loss and rehydration on cognitive performance in well-trained athletes. Ten endurance-trained males (25 ± 5 years; 175 ± 5 cm; 70.35 ± 5.46 kg; VO2max, 62.95 ± 7.20 ml · kg.min(-1)) lost ~2.5 ± 0.6% body mass via continuous cycling exercise at ~65% peak sustainable power output (60 min duration) before consuming different beverages (Water = W1 and W2, Sustagen Sport = SS, Powerade = PD) and food ad libitum on four separate occasions...
March 2, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28277402/a-multifactorial-criteria-based-progressive-algorithm-for-hamstring-injury-treatment
#15
Jurdan Mendiguchia, Enrique Martinez-Ruiz, Pascal Edouard, Jean-Benoît Morin, Francisco Martinez-Martinez, Fernando Idoate, Alberto Mendez-Villanueva
INTRODUCTION: Given the prevalence of hamstring injuries in football, a rehabilitation program that effectively promotes muscle tissue repair and functional recovery is paramount to minimize re-injury risk and optimize player performance and availability. PURPOSE: To assess the concurrent effectiveness of administering an individualized and multifactorial criteria-based algorithm (RA) on hamstring injury rehabilitation in comparison to employing a general rehabilitation protocol (RP)...
March 8, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28276909/how-should-we-categorise-self-reported-data-on-subsequent-injuries
#16
Philip von Rosen, Annette Heijne
Classifying subsequent injuries is of high importance in injury epidemiology since a previous injury has been reported to increase the risk of a new injury or increase the risk of a more severe injury. Multiple reports have shown that self-reported data provide an extensive view of an injury problem and add valuable information to the understanding of the athlete's health. The purpose of this study was to display a method that can be used to facilitate classification of subsequent injuries and to discuss challenges faced when categorising subsequent injuries based on self-reported data...
March 5, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28268276/preliminary-results-of-residual-deficits-observed-in-athletes-with-concussion-history-combined-eeg-and-cognitive-study
#17
Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai
Assessment, treatment, and management of sport-related concussions are a widely recognized public health issue. Although several neuropsychological and motor assessment tools have been developed and implemented for sports teams at various levels and ages, the sensitivity of these tests has yet to be validated with more objective measures to make return-to-play (RTP) decisions more confidently. The present study sought to analyze the residual effect of concussions on a sample of adolescent athletes who sustained one or more previous concussions compared to those who had no concussion history...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28263409/cryotherapy-induces-an-increase-in-muscle-stiffness
#18
Maxime Point, Gaël Guilhem, François Hug, Antoine Nordez, Alain Frey, Lilian Lacourpaille
Although cold application (i.e., cryotherapy) may be useful to treat sports injuries and to prevent muscle damage, it is unclear whether it has adverse effects on muscle mechanical properties. This study aimed to determine the effect of air-pulsed cryotherapy on muscle stiffness estimated using ultrasound shear wave elastography. Myoelectrical activity, ankle passive torque, shear modulus (an index of stiffness) and muscle temperature of the gastrocnemius medialis were measured before, during an air-pulsed cryotherapy (-30°) treatment of 4 sets of 4 minutes with 1 min recovery in between, and during a 40-min post-cryotherapy period...
March 6, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28262355/the-importance-of-a-neck-exam-in-sport-related-concussion-cervical-schwannoma-in-post-concussion-syndrome
#19
David M Langelier, Kathryn J Schneider, John Hurlbert, Chantel T Debert
OBJECTIVE: Few cases of cervical schwannoma have been reported following head trauma. The present case, involves a schwannoma of the C2 spinal nerve mimicking post-concussion symptoms following a sport-related concussion (SRC). DESIGN: Case study. SETTING: University of Calgary, Sport Medicine Clinic, Calgary, Alberta, Canada. RESULTS: We report a 28 year old, athlete who developed headache, dizziness, photophobia, and neck pain following a cycling accident...
January 17, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28253031/the-relationship-between-training-load-and-injury-in-men-s-professional-basketball-players
#20
Kaitlyn J Weiss, Sian V Allen, Mike R McGuigan, Chris S Whatman
PURPOSE: To establish the relationship between the acute:chronic workload ratio and lower extremity overuse injuries in professional basketball players over the course of a competitive season. METHODS: The acute:chronic workload ratio was determined by calculating the sum of the current week's session rate of perceived exertion (sRPE) training load (acute load) and dividing it by the average weekly training load over the previous four weeks (chronic load). All injuries were recorded weekly using a self-reported injury questionnaire (Oslo Sports Trauma Research Centre Injury Questionnaire(20)) Workload ratios were modelled against injury data using a logistic regression model with unique intercepts for each player...
March 2, 2017: International Journal of Sports Physiology and Performance
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