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https://www.readbyqxmd.com/read/28087244/practice-makes-perfect-correlations-between-prior-experience-in-high-level-athletics-and-robotic-surgical-performance-do-not-persist-after-task-repetition
#1
Kevin Shee, Fady M Ghali, Elias S Hyams
OBJECTIVE: Robotic surgical skill development is central to training in urology as well as in other surgical disciplines. Here, we describe a pilot study assessing the relationships between robotic surgery simulator performance and 3 categories of activities, namely, videogames, musical instruments, and athletics. DESIGN: A questionnaire was administered to preclinical medical students for general demographic information and prior experiences in surgery, videogames, musical instruments, and athletics...
January 10, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28081584/-mini-open-approach-shows-good-results-in-treatment-of-femoroacetabular-impingement
#2
Stephanie Maria Kirschbaum, Frank Sitterlee, Carsten Perka, Michael Müller
Background Femoroacetabular impingement (FAI) describes a painful, abnormal (bony) contact between the femoral neck and acetabulum, which, if left untreated, contributes to early osteoarthritis (OA) of the hip. Despite its flat learning curve and long operation times, hip arthroscopy has been used increasingly often in recent years in the surgery of femoroacetabular impingement. The mini-open technique (MOT) offers a possible alternative that addresses the abnormal morphological prominence and allows minimally invasive clearance of hip motion...
January 12, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28081034/the-effects-of-the-removal-of-electronic-devices-for-48-hours-on-sleep-in-elite-judo-athletes
#3
Ian C Dunican, David T Martin, Shona L Halson, Reid Reale, Brian Dawson, John Caldwell, Maddison J Jones, Peter R Eastwood
OBJECTIVE: This study examined the effects of the removal of electronic devices (i.e., smartphones, etc.) for 48 hours on sleep quality and next-day athletic and cognitive performance in elite Judo athletes. PARTICIPANTS: Over 6 days and nights, 23 eliteAustralian Judo athletes were monitored while attending a camp at the Australian Institute of Sport (AIS). In 14 athletes all electronic devices were removed on days 3 & 4 (i.e. for 48 hours: the 'device-restricted group') while 9 were permitted to use their devices throughout the camp (the 'control group')...
January 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28080323/oral-adenosine-5-triphosphate-atp-administration-increases-postexercise-atp-levels-muscle-excitability-and-athletic-performance-following-a-repeated-sprint-bout
#4
Eduardo O De Souza, John A Rathmacher, Matthew H Sharp, Ryan P Lowery, Kevin A Shields, Jeremy M Partl, Jacob M Wilson, Ralf Jäger, Martin Purpura
OBJECTIVE: Oral adenosine-5'-triphosphate (ATP) administration has failed to increase plasma ATP levels; however, chronic supplementation with ATP has shown to increase power, strength, lean body mass, and blood flow in trained athletes. The purpose of this study was to investigate the effects of ATP supplementation on postexercise ATP levels and on muscle activation and excitability and power following a repeated sprint bout. METHODS: In a double-blind, placebo-controlled, randomized design, 42 healthy male individuals were given either 400 mg of ATP as disodium salt or placebo for 2 weeks prior to an exercise bout...
January 12, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28078945/influences-of-population-size-and-density-on-birthplace-effects
#5
David J Hancock, Patrícia Coutinho, Jean Côté, Isabel Mesquita
Contextual influences on talent development (e.g., birthplace effects) have become a topic of interest for sport scientists. Birthplace effects occur when being born in a certain city size leads to participation or performance advantages, typically for those born in smaller or mid-sized cities. The purpose of this study was to investigate birthplace effects in Portuguese volleyball players by analysing city size, as well as population density - an important but infrequently used variable. Participants included 4062 volleyball players (Mage = 33), 53...
January 12, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28078878/vitamin-a-decreases-after-a-maximal-incremental-stress-test-in-non-professional-male-runners-with-low-aerobic-performance
#6
P Izzicupo, B Ghinassi, M A D'Amico, T Bucciarelli, S Gallina, A Di Baldassarre
The data on the effects of aerobic training on plasma antioxidant vitamins are conflicting. Additionally, most studies focus on the oxidative profiles of professional athletes, but limited information is available for amateur athlete populations. The aim of this study was to evaluate the effects of high-intensity exercise on antioxidant vitamins in non-professional runners with varying levels of aerobic power. Eighty-one male runners underwent an incremental test to exhaustion. The study population was then divided into the following tertiles according to VO2max: Group L (LowVO2max, less than 44...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078610/optimization-of-the-return-to-sport-paradigm-after-anterior-cruciate-ligament-reconstruction-a-critical-step-back-to-move-forward
#7
REVIEW
Bart Dingenen, Alli Gokeler
Athletes who have sustained an anterior cruciate ligament (ACL) injury often opt for an ACL reconstruction (ACLR) with the goal and expectation to resume sports. Unfortunately, the proportion of athletes successfully returning to sport is relatively low, while the rate of second ACL injury has been reported to exceed 20% after clearance to return to sport, especially within younger athletic populations. Despite the development of return-to-sport guidelines over recent years, there are still more questions than answers on the most optimal return-to-sport criteria after ACLR...
January 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28077934/serum-reference-value-of-two-potential-doping-candidates-myostatin-and-insulin-like-growth-factor-i-in-the-healthy-young-male
#8
Der-Sheng Han, Chi-Huang Huang, Ssu-Yuan Chen, Wei-Shiung Yang
BACKGROUND: Myostatin negatively regulates muscle growth, and its inhibition by suitable proteins can increase muscle bulk and exercise performance. However, the reference values of serum myostatin in athletes performing strength training are still lacking. METHODS: A cross-sectional study recruiting28 male collegiate athletes performing strength training and 29 age-matched normal controls was conducted. The serum concentration of myostatin and insulin-like growth factor 1 (IGF-1), grip strength, and body composition were the main outcome measures...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28074875/from-an-indirect-response-pharmacodynamic-model-towards-a-secondary-signal-model-of-dose-response-relationship-between-exercise-training-and-physical-performance
#9
Thierry Busso
The aim of this study was to test the suitability of using indirect responses for modeling the effects of physical training on performance. We formulated four different models assuming that increase in performance results of the transformation of a signal secondary to the primary stimulus which is the training dose. The models were designed to be used with experimental data with daily training amounts ascribed to input and performance measured at several dates ascribed to output. The models were tested using data obtained from six subjects who trained on a cycle ergometer over a 15-week period...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28072633/visual-motion-processing-subserves-faster-visuomotor-reaction-in-badminton-players
#10
Thorben Hülsdünker, Heiko K Strüder, Andreas Mierau
INTRODUCTION: Athletes participating in ball or racquet sports have to respond to visual stimuli under critical time pressure. Previous studies used visual contrast stimuli to determine visual perception and visuomotor reaction in athletes and non-athletes however, especially ball and racquet sports are characterized by motion rather than contrast visual cues. Since visual contrast and motion signals are processed in different cortical regions, this study aimed to determine differences in perception and processing of visual motion between athletes and non-athletes...
January 9, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28072631/terbutaline-accumulates-in-blood-and-urine-following-daily-therapeutic-inhalation
#11
Nanna Krogh, Sebastian Rzeppa, Anders Dyreborg, Yvette Dehnes, Peter Hemmersbach, Vibeke Backer, Morten Hostrup
PURPOSE: This study investigated pharmacokinetics of terbutaline after single and seven consecutive days of inhalation in exercising trained men. METHODS: Twelve healthy young trained men underwent two pharmacokinetic trials comparing single dose (2 mg) and seven consecutive days (2 mg×d) of inhaled terbutaline. After inhalation of terbutaline at each trial, subjects performed 90 min of bike ergometer exercise at 65% of maximal oxygen consumption after which they stayed inactive...
January 9, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28071936/concussion-baseline-testing-preexisting-factors-symptoms-and-neurocognitive-performance
#12
Eric Hall, Jordan Cottle, Caroline Ketcham, Kirtida Patel, Kenneth P Barnes
CONTEXT:  Neurocognitive test scores are often considered an important aspect of concussion management. To best use these data, clinicians must understand potential factors that may influence baseline performance on these tests. OBJECTIVE:  To determine preexisting factors that may influence performance on the Immediate Post-Concussion Assessment and Cognitive Test (ImPACT). DESIGN:  Cross-sectional study. SETTING:  Research laboratory...
January 10, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28070839/-1-h-and-31-p-myocardial-magnetic-resonance-spectroscopy-in-non-obstructive-hypertrophic-cardiomyopathy-patients-and-competitive-athletes
#13
Francesco Secchi, Giovanni Di Leo, Marcello Petrini, Riccardo Spairani, Marco Alì, Marco Guazzi, Francesco Sardanelli
PURPOSE: The clinical differentiation between athlete's heart and mild forms of non-obstructive hypertrophic cardiomyopathy (HCM) is crucial. We hypothesized that differences do exist between the myocardial metabolism of patients with non-obstructive HCM and competitive athletes (CAs). Our aim was to evaluate myocardial metabolism with (31)P-MRS and (1)H-MRS in HCM patients and CAs. MATERIALS AND METHODS: After Ethics Committee approval, 15 CAs and 7 HCM patients were prospectively enrolled...
January 9, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28067808/effects-of-beetroot-juice-supplementation-on-cardiorespiratory-endurance-in-athletes-a-systematic-review
#14
REVIEW
Raúl Domínguez, Eduardo Cuenca, José Luis Maté-Muñoz, Pablo García-Fernández, Noemí Serra-Paya, María Carmen Lozano Estevan, Pablo Veiga Herreros, Manuel Vicente Garnacho-Castaño
Athletes use nutritional supplementation to enhance the effects of training and achieve improvements in their athletic performance. Beetroot juice increases levels of nitric oxide (NO), which serves multiple functions related to increased blood flow, gas exchange, mitochondrial biogenesis and efficiency, and strengthening of muscle contraction. These biomarker improvements indicate that supplementation with beetroot juice could have ergogenic effects on cardiorespiratory endurance that would benefit athletic performance...
January 6, 2017: Nutrients
https://www.readbyqxmd.com/read/28067741/hypertensive-medications-in-competitive-athletes
#15
Henry Pelto
Hypertension is the most common cardiovascular disease in athletes. It is an important cause of long-term morbidity and mortality, even in a fit, athletic population. Management options to reduce these long-term risks exist that have minimal impact on athletic performance. Identification and management of underlying lifestyle factors and diseases that may lead to secondary hypertension is critical. These include substance abuse, medications, and underlying medical conditions. After evaluation and management of these issues, medications can be used to reduce blood pressure...
January 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28065996/history-of-the-royal-college-of-chiropractic-sports-sciences-canada-the-early-years
#16
John De Finney, Gordon Lawson, David Gryfe, Susan Gillis-Lawson, John P Crawford
In 1978 the Canadian Chiropractic Association recognized the need to establish an organization that would prepare chiropractors to treat athletic injuries and promote these services to sports organizations. Dr. Adrian Grice approached three chiropractors to establish such an organization. The Canadian Chiropractic Sports Academy (CCSA) was established in 1978. This was the start of the chiropractic sports movement which has seen chiropractors playing prominent roles as team doctors to professional and amateur teams and athletes and in the delivery of care at major national and international competitions...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28065993/the-utility-of-the-king-devick-test-as-a-sideline-assessment-tool-for-sport-related-concussions-a-narrative-review
#17
Scott Howitt, Robert Brommer, Justin Fowler, Logan Gerwing, Julian Payne, Christopher DeGraauw
OBJECTIVE: The objective of this paper is to review existing literature surrounding the utility of the King-Devick test which is a commonly used sideline assessment tool for sport-related concussions. METHODS: A review of the literature was performed using MEDLINE, CINHAL, and SportDiscus databases. The search was performed from the beginning of the record through November 16(th), 2015. RESULTS: This search strategy yielded 27 articles from aforementioned databases...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28065163/diagnostic-approach-to-catastrophic-musculoskeletal-injuries-in-racehorses
#18
Santiago S Diab, Susan M Stover, Francisco Carvallo, Akinyi C Nyaoke, Janet Moore, Ashley Hill, Rick Arthur, Francisco A Uzal
Catastrophic musculoskeletal injuries are the most common cause of euthanasia or spontaneous death in racehorses, and the most common cause of jockey falls with potential for serious human injury. Horses are predisposed to the vast majority of these injuries by preexisting lesions that can be prevented by early diagnosis and adequate bone injury management. A thorough examination of the musculoskeletal system in racehorses often determines the cause of these injuries and generates data to develop injury prevention strategies...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28063895/improvement-of-table-tennis-dystonia-by-stereotactic-ventro-oral-thalamotomy-a-case-report
#19
Takashi Asahi, Takaomi Taira, Kiyonobu Ikeda, Jiro Yamamoto, Shuji Sato
BACKGROUND: Task-specific focal dystonia, such as writer's cramp and musician's cramp, is a type of dystonia that affects performance of particular tasks. Such movement disorders have been treated with stereotactic ventro-oral (Vo) thalamotomy, with excellent outcomes. However, there has been no previous report of treatment of sport-related/athlete's dystonia by means of stereotactic surgery. We treated a patient with table tennis-related dystonia with Vo thalamotomy, and evaluated the outcome...
January 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28062686/the-gstp1-c-313a-g-polymorphism-in-russian-and-polish-athletes
#20
Aleksandra Zarebska, Zbigniew Jastrzębski, Ildus I Ahmetov, Piotr Zmijewski, Pawel Cieszczyk, Agata Leonska-Duniec, Marek Sawczuk, Katarzyna Leznicka, Grzegorz Trybek, Ekaterina A Semenova, Agnieszka Maciejewska-Skrendo
The GSTP1 gene encodes glutathione S-transferase P1 which is a member of glutathione S-transferases (GSTs) that are a family of enzymes playing an important role in detoxification and in the antioxidant defense system. There were some the evidence indicating that GSTP1 c.313A>G polymorphism may be beneficial for exercise performance. Therefore, we have decided to verify the association between the frequency of GSTP1 c.313A>G variants, physical performance and athlete's status in two cohorts: in a group of Russian athletes (n=507) and in an independent population of Polish athletes (n=510) in a replication study...
January 6, 2017: Physiological Genomics
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