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Sports Performance

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https://www.readbyqxmd.com/read/29777356/visuospatial-abilities-and-fine-motor-experiences-influence-acquisition-and-maintenance-of-fundamentals-of-laparoscopic-surgery-fls-task-performance
#1
Cuan M Harrington, Patrick Dicker, Oscar Traynor, Dara O Kavanagh
BACKGROUND: Minimally invasive surgery poses a unique learning curve due to the requirement for non-intuitive psychomotor skills. The fundamentals of laparoscopic surgery (FLS) program trains and certifies residents in such skills. However, innate predictors of FLS performance and maintenance remain to be described. This single-centre observational study aimed to assess for candidate factors influencing the acquisition and maintenance of FLS performance amongst a surgically naïve cohort...
May 18, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29776619/poor-sleep-quality-and-insufficient-sleep-of-a-collegiate-student-athlete-population
#2
Cheri D Mah, Eric J Kezirian, Brandon M Marcello, William C Dement
OBJECTIVE: Poor and inadequate sleep negatively impact cognitive and physical functioning and may also affect sports performance. The study aim is to examine sleep quality, sleep duration, and daytime sleepiness in collegiate student-athletes across a wide range of sports. DESIGN: Questionnaire. SETTING: University setting. PARTICIPANTS: 628 athletes across 29 varsity teams at Stanford University. MEASUREMENTS: Athletes completed a questionnaire inquiring about sleep quality via a modified Pittsburgh Sleep Quality Index (PSQI), sleep duration, and daytime sleepiness via Epworth Sleepiness Scale...
June 2018: Sleep Health
https://www.readbyqxmd.com/read/29775483/ldha-gene-is-associated-with-pigeon-survivability-during-racing-competitions
#3
Sherif Ramadan, Takeshi Miyake, Junichi Yamaura, Miho Inoue-Murayama
Pigeon racing is a popular sport worldwide. Pigeons are under continuous selection to improve speed, spatial orientation, and endurance during long flights. However, numerous genetic and non-genetic factors affect survivability and homing ability, making such traits difficult for breeders to control. Polymorphisms in the lactate dehydrogenase A gene (LDHA) likely affects pigeon racing and homing abilities, due to its role in physical and mental performance. Additionally, the adenylate cyclase activating polypeptide 1 gene (ADCYAP1) has been associated with physiological and behavioral shifts that occur during avian migration...
2018: PloS One
https://www.readbyqxmd.com/read/29775379/decision-to-return-to-sport-participation-after-anterior-cruciate-ligament-reconstruction-part-ii-self-reported-and-functional-performance-outcomes
#4
Jennifer L Werner, Julie P Burland, Carl G Mattacola, Jenny Toonstra, Robert A English, Jennifer S Howard
CONTEXT:   Anterior cruciate ligament (ACL) reconstruction (ACLR) is the most commonly used method for helping athletes regain function and return to preinjury activity levels after ACL injury. Outcomes after ACLR have suggested that athletes return to a level of function that would support a return to sport participation; however, in a recent meta-analysis, pooled return rates were only 55%. It is unclear whether this discrepancy is a result of functional impairments. OBJECTIVE:   To compare patient-reported outcomes (PROs), dynamic balance, dynamic functional performance, strength, and muscular endurance in athletes who have returned to sport (RTS) and athletes who have not returned to sport (NRTS) after ACLR...
May 18, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29773412/athlete-s-heart-is-the-morganroth-hypothesis-obsolete
#5
Mark J Haykowsky, T Jake Samuel, Michael D Nelson, Andre La Gerche
In 1975, Morganroth and colleagues reported that the increased left ventricular (LV) mass in highly trained endurance athletes versus nonathletes was primarily due to increased end-diastolic volume while the increased LV mass in resistance trained athletes was solely due to an increased LV wall thickness. Based on the divergent remodelling patterns observed, Morganroth and colleagues hypothesised that the increased "volume" load during endurance exercise may be similar to that which occurs in patients with mitral or aortic regurgitation while the "pressure" load associated with performing a Valsalva manoeuvre (VM) during resistance exercise may mimic the stress imposed on the heart by systemic hypertension or aortic stenosis...
May 1, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29770501/correlation-between-cycling-power-and-muscle-thickness-in-cyclists
#6
Hyung-Jin Lee, Kang-Woo Lee, Yong-Woo Lee, Hee-Jin Kim
INTRODUCTION: The aim of this study was to determine the correlation between muscle thickness (MT) and cycling power in varsity cyclists using ultrasonography (US) and to identify any differences in MT between short- and long-distance cyclists. MATERIALS AND METHODS: Twelve cyclists participated in this study. Real-time two-dimensional B-mode US was used to measure the MT in the anterior thigh, anterior lower leg, and trunk, especially in the abdominal and lumbar regions...
May 17, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29770341/knowledge-attitudes-and-beliefs-of-youth-club-athletes-toward-sport-specialization-and-sport-participation
#7
M Alison Brooks, Eric G Post, Stephanie M Trigsted, Daniel A Schaefer, Daniel M Wichman, Andrew M Watson, Timothy A McGuine, David R Bell
Background: There are a variety of proposed motivations for sport specialization, such as improving sport skills to an elite level, making all-star or travel teams, or receiving a scholarship or professional contract. However, there has not been a quantitative examination of the attitudes and beliefs that may be contributing to the trend of sport specialization and year-round sport participation. Purpose: The primary aim was to describe the attitudes and beliefs of youth club sport athletes regarding sport specialization and sport participation...
May 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29769834/continuous-knee-cooling-affects-functional-hop-performance-a-randomized-controlled-trial
#8
Bruno Tassignon, Ben Serrien, Kevin De Pauw, Jean-Pierre Baeyens, Romain Meeusen
Cryotherapy is widely used in sports and rehabilitation to aid recovery and injury management. The purpose was to examine if a low temperature computer controlled continuous knee cooling protocol (10°C) for one hour and a moderate continuous knee cooling protocol (18°C) for one hour affected neuromuscular activity and functional performance tests. We used a randomized controlled study design. Twenty healthy male subjects (age = 24 ± 3 years) were included and randomized into 2 groups (10°C and 18°C). On day one, participants performed a maximal voluntary contraction of the quadriceps (MVC), single leg hop for distance (SLHD), and crossover hop for time (COHT) with both legs before and after cooling of their right leg...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29769830/low-external-workloads-are-related-to-higher-injury-risk-in-professional-male-basketball-games
#9
Toni Caparrós, Martí Casals, Álvaro Solana, Javier Peña
The primary purpose of this study was to identify potential risk factors for sports injuries in professional basketball. An observational retrospective cohort study involving a male professional basketball team, using game tracking data was conducted during three consecutive seasons. Thirty-three professional basketball players took part in this study. A total of 29 time-loss injuries were recorded during regular season games, accounting for 244 total missed games with a mean of 16.26 ± 15.21 per player and season...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29769823/relationship-between-achilles-tendon-stiffness-and-ground-contact-time-during-drop-jumps
#10
Mohamed Abdelsattar, Andreas Konrad, Markus Tilp
The purpose of this study was to investigate the relationship between Achilles tendon stiffness and ground contact time (GCT) during drop jumps. The property of "springiness" and a short GCT during the movement is required in several types of sports. Therefore, a stiff tendon might be advantageous due to the quick force transmission from the muscle to the bone. Hence, a secondary aim was to relate Achilles tendon stiffness with squat jump (SJ) and counter movement jump (CMJ) performance, respectively...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29769139/double-bundle-anterior-cruciate-ligament-reconstruction-improves-tibial-rotational-instability-analysis-of-squatting-motion-using-a-2d-3d-registration-technique
#11
Kenichi Kidera, Akihiko Yonekura, Takeshi Miyaji, Yusuke Nakazoe, Kazuyoshi Gamada, Kei Yoneta, Futoshi Ikuta, Masato Tomita, Takashi Miyamoto, Shiro Kajiyama, Akira Hozumi, Ko Chiba, Narihiro Okazaki, Takayuki Shida, Makoto Osaki
BACKGROUND: The anterior cruciate ligament-deficient (ACLD) knee requires appropriate treatment for the patient to return to sports. The purpose of this study was to clarify the kinematics of the anterior cruciate ligament-deficient knee in squatting motion before and after double-bundle anterior cruciate ligament reconstruction (DB-ACLR) using a 2D/3D registration technique. METHODS: The subjects of this study were 10 men with confirmed unilateral ACL rupture who underwent DB-ACLR...
May 16, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29768095/test-retest-reliability-of-kinetic-variables-measured-on-campus-board-in-sport-climbers
#12
Edgardo Alvares de Campos Abreu, Sílvia Ribeiro Santos Araújo, Gustavo Henrique da Cunha Peixoto Cançado, André Gustavo Pereira de Andrade, Mauro Heleno Chagas, Hans-Joachim Karl Menzel
Sport climbers frequently use campus board (CB) to improve their upper limb strength under similar conditions of high-difficulty sport climbing routes. The objective of this study was to assess the test-retest reliability of peak force and impulse measured using a CB instrumented with two load cells on starting holds. The same evaluator examined 22 climbers on two days with 48 h between the assessments. The participants performed five concentric lunges (CL) and five lunges with stretch-shortening cycle with 1 min intervals between repetitions and 10 min between exercises...
May 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29768026/return-to-play-and-performance-outcomes-of-professional-athletes-in-north-america-after-hip-arthroscopy-from-1999-to-2016
#13
Michael S Schallmo, Thomas H Fitzpatrick, Hunter B Yancey, Alejandro Marquez-Lara, T David Luo, Allston J Stubbs
BACKGROUND: The effect of hip arthroscopy on athletic performance compared with preinjury levels for professional athletes in different sports remains unknown. In addition, while return rates have been reported for professional baseball, football, and hockey players, return rates have not been reported for professional basketball players. HYPOTHESIS: Professional athletes in 4 major North American sports would be able to return to their sport and preoperative level of performance at a high rate after arthroscopic hip surgery...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29766509/acceleration-and-deceleration-at-constant-speed-systematic-modulation-of-motion-perception-by-kinematic-sonification
#14
Alfred O Effenberg, Gerd Schmitz
Many domains of human behavior are based on multisensory representations. Knowledge about the principles of multisensory integration is useful to configure real-time movement information for the online support of perceptuomotor processes (motor perception, control, and learning). A powerful method for generating real-time information is movement sonification. Remarkable evidence exists on movement-acoustic real-time information being effective in behavioral domains (music training, motor rehabilitation, sports)...
May 16, 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29764915/remote-physiological-monitoring-in-an-austere-environment-a-future-for-battlefield-care-provision
#15
Matthew J Smyth, J A Round, A J Mellor
Wearable technologies are making considerable advances into the mainstream as they become smaller and more user friendly. The global market for such devices is forecasted to be worth over US$5 billion in 2018, with one in six people owning a device. Many professional sporting teams use self-monitoring to assess physiological parameters and work rate on the pitch, highlighting the potential utility for military command chains. As size of device reduces and sensitivity improves, coupled with remote connectivity technology, integration into the military environment could be relatively seamless...
May 14, 2018: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/29764737/a-comparison-of-head-injuries-in-male-and-female-lacrosse-participants-seen-in-us-emergency-departments-from-2005-to-2016
#16
Christopher N Cooley, Tyler J Beranek, Matthew A Warpinski, Robert Alexander, Amanda O Esquivel
INTRODUCTION: In the United States there has been a large increase in participation in lacrosse for both males and females. The purpose of this study was to analyze the number of head injuries, injury rates (calculated using the reported number of participants) and types of head injuries that are seen in emergency departments in the United States. METHODS: We compared injuries between male and female lacrosse participants. This was a retrospective study using a publicly available database produced by the US Consumer Product Safety Commission and information about lacrosse participation from US Lacrosse...
May 9, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29764376/methicillin-resistant-staphylococcus-aureus-in-emergency-department-patients-in-the-united-arab-emirates
#17
Muna Al Jalaf, Hanan Fadali, Rasha Alanee, Firas Najjar, Zulfa Al Deesi, Rania M Seliem, Eric J Nilles
BACKGROUND: Since the 1990s, community-associated methicillin resistant staphylococcus aureus (CA-MRSA) has emerged as an important global cause of skin and soft tissue infections. Little is known about the epidemiology of this pathogen in the Middle East. METHODS: We conducted a prospective observational study in a single large teaching hospital in Dubai to identify the incidence of community-acquired methicillin resistant staphylococcus aureus (MRSA) among ambulatory patients presenting with purulent skin and soft tissue infections...
May 15, 2018: BMC Emergency Medicine
https://www.readbyqxmd.com/read/29764338/the-prognostic-relevance-of-psychological-factors-with-regard-to-participation-and-success-in-table-tennis
#18
Guillaume Martinent, Valérian Cece, Marije Titia Elferink-Gemser, Irene Renate Faber, Jean-Claude Decret
This study examined the prognostic relevance of self-determined motivation, coping, burnout, perceived stress and recovery experienced by 159 youth table-tennis players involved in intensive training centers with regard to their participation and success six years later. Results of ANCOVAs showed that players who still practiced at time 2 (T2; six years later; n = 130) reported lower time 1 (T1; while they were involved in intensive training centers) amotivation (large effect), disengagement-oriented coping, sport devaluation and reduced accomplishment (moderate effects) than their counterparts who dropped out at T2 (n = 29)...
May 15, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29763813/age-and-gymnastic-experience-effects-on-sensory-reweighting-processes-during-quiet-stand
#19
Albert Busquets, Silvia Aranda-Garcia, Blai Ferrer-Uris, Michel Marina, Rosa Angulo-Barroso
BACKGROUND: The relative contribution of sensory inputs to control balance while standing is dynamically adjusted. These sensory reweighting processes could be impacted by age and sport expertise capabilities, especially when the sport emphasizes equilibrium like artistic gymnastics. RESEARCH QUESTION: The aim of this study was to explore the sensory reweighting processes to adjust standing posture in children and adults with different gymnastic expertise (gymnasts, G, and non-gymnast, NG)...
May 8, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29763339/the-v-shaped-distal-triceps-tendon-repair-a-comparative-biomechanical-analysis
#20
Bastian Scheiderer, Florian B Imhoff, Daichi Morikawa, Lucca Lacheta, Elifho Obopilwe, Mark P Cote, Andreas B Imhoff, Augustus D Mazzocca, Sebastian Siebenlist
BACKGROUND: Restoring footprint anatomy, minimizing gap formation, and maximizing the strength of distal triceps tendon repairs are essential factors for a successful healing process and return to sport. HYPOTHESIS: The novel V-shaped distal triceps tendon repair technique with unicortical button fixation closely restores footprint anatomy, provides minimal gap formation and high ultimate failure load, and minimizes iatrogenic fracture risk in acute/subacute distal triceps tendon tears...
May 1, 2018: American Journal of Sports Medicine
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