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https://www.readbyqxmd.com/read/29792560/acceleration-profile-of-an-acrobatic-act-during-training-and-shows-using-wearable-technology
#1
Leland Barker, Bryan Burnstein, John Mercer
The purpose of this study was to describe the mechanical characteristics of a trampoline circus act and its individual tracks performed in training and shows using a tri-axial accelerometer. A track is an artist's specific role within a choreographed act. Seven male acrobats performed their trampoline act during training and shows while wearing a triaxial accelerometer and reported ratings of perceived exertion (RPE) after each trial. Average acceleration (AVG), root mean square (RMS), root mean to the fourth (RM4), time spent in specific acceleration ranges and RPE were measured/recorded from training and show acts...
May 24, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29782309/in-memoriam-assistant-professor-kre%C3%A5-imir-kostovi%C3%A4-md-phd-16-october-1969-15-october-2017
#2
Branka Marinović
On a Sunday afternoon almost six months ago, we were deeply moved by the news that our Krešimir is no longer with us. The sad news spread from Sarajevo with the speed only most horrible and saddest news can achieve. And everybody who was reached by these news wondered whether it was possible and whether it was true. Because our professor Kostović left us a day before his 48th birthday. Krešimir Kostović was born on the 16th October 1969 in Zagreb, where he completed primary and secondary education. He enrolled at the University of Zagreb School of Medicine in 1988, and got his medical degree in 1995...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29781992/muscle-imbalances-testing-and-training-functional-eccentric-hamstring-strength-in-athletic-populations
#3
Petr Stastny, Michal Lehnert, James J Tufano
Many hamstring injuries that occur during physical activity occur while the muscles are lengthening, during eccentric hamstring muscle actions. Opposite of these eccentric hamstring actions are concentric quadriceps actions, where the larger and likely stronger quadriceps straighten the knee. Therefore, to stabilize the lower limbs during movement, the hamstrings must eccentrically combat against the strong knee-straightening torque of the quadriceps. As such, eccentric hamstring strength expressed relative to concentric quadricep strength is commonly referred to as the "functional ratio" as most movements in sports require simultaneous concentric knee extension and eccentric knee flexion...
May 1, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781938/physical-demands-of-amateur-domestic-and-representative-netball-in-one-season-in-new-zealand-assessed-using-heart-rate-and-movement-analysis
#4
Doug A King, Cloe Cummins, Patria A Hume, Trevor N Clark
King, DA, Cummins, C, Hume, PA, and Clark, TN. Physical demands of amateur domestic and representative netball in one season in New Zealand assessed using heart rate and movement analysis. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this descriptive cohort study was to describe physical demands of netball for positions and between playing levels using microtechnology. Data were collected from 34 female netball players across 3 teams at different levels (over 19 years representative [O19], under 19 years representative [U19], and open-age amateur club domestic) for 20 games using heart rate and microtechnology data...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781935/balance-training-reduces-postural-sway-and-improves-sport-specific-performance-in-visually-impaired-cross-country-skiers
#5
Alexander Kurz, Benedikt Lauber, Steffen Franke, Christian Leukel
Kurz, A, Lauber, B, Franke, S, and Leukel, C. Balance training reduces postural sway and improves sport-specific performance in visually impaired cross-country skiers. J Strength Cond Res XX(X): 000-000, 2018-Balance training is highly effective in reducing sport injuries and causes improvements in postural stability and rapid force production. So far, the positive effects of balance training have been described for healthy athletes. In the present experiments, we questioned whether athletes with disabilities of the visual system can also benefit from balance training...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781788/a-review-of-the-reliability-of-biomechanical-variables-produced-during-the-isometric-mid-thigh-pull-and-isometric-squat-and-the-reporting-of-normative-data
#6
Claire J Brady, Andrew J Harrison, Thomas M Comyns
The use of isometric strength testing, particularly the isometric mid-thigh pull (IMTP) has increased dramatically over the last decade. The IMTP and isometric squat (ISqT) provide one aspect of performance monitoring with variables such as peak force and rate of force development being derived from the force-time curve. The reliability of some of these variables is conflicting in the literature, and the reporting of the reliability is not standardised across the research. The majority of research only reports intraclass correlation coefficients with very few studies reporting coefficient of variation and 90% confidence intervals...
May 21, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29748899/implementing-a-coach-delivered-dating-violence-prevention-program-with-high-school-athletes
#7
Maria Catrina D Jaime, Heather L McCauley, Daniel J Tancredi, Michele R Decker, Jay G Silverman, Brian O'Connor, Elizabeth Miller
Teen dating violence and sexual violence are severe public health problems. Abusive behaviors within the context of dating or romantic relationships are associated with adverse health outcomes. Promoting positive bystander intervention and increasing knowledge of abusive behaviors are promising strategies for preventing dating and sexual violence. Coaching Boys Into Men (CBIM) is an evidence-based, athletic coach-delivered dating violence prevention program that has been shown to increase positive bystander behaviors and reduce abuse perpetration among high school male athletes...
May 10, 2018: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/29746803/urine-specific-gravity-as-an-indicator-of-dehydration-in-olympic-combat-sport-athletes-considerations-for-research-and-practice
#8
Damir Zubac, Reid Reale, Hrvoje Karnincic, Anamaria Sivric, Igor Jelaska
Urine specific gravity (USG ) is the most commonly reported biochemical marker used in research and applied settings to detect fluid deficits in athletes, including those participating in combat sports. Despite the popularity of its use, there has been a growing debate regarding the diagnostic accuracy and the applicability of USG in characterizing whole-body fluid status and fluctuations. Moreover, recent investigations report universally high prevalence of hypohydration (∼90%) via USG assessment in combat sport athletes, often in spite of stable body-mass...
May 10, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29739304/soccer-injury-movement-screen-sims-composite-score-is-not-associated-with-injury-among-semi-professional-soccer-players
#9
Robert McCunn, Karen Aus der Fünten, Matthew Whalan, John A Sampson, Tim Meyer
Study Design Prospective cohort. Background The association between movement quality and injury is equivocal. No soccer-specific movement assessment has been prospectively investigated in relation to injury risk. Objectives To investigate the association between a soccer-specific movement quality assessment and injury risk among semi-professional soccer players. Methods Semi-professional soccer players (n=306) from 12 clubs completed the Soccer Injury Movement Screen (SIMS) during the pre-season period. Individual training/match exposure and non-contact time loss injuries were recorded prospectively for the entirety of the 2016 season...
May 8, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29738678/the-athletes-visuomotor-system-cortical-processes-contributing-to-faster-visuomotor-reactions
#10
Thorben Hülsdünker, Heiko K Strüder, Andreas Mierau
Many sports require athletes to rapidly transform visual information into a targeted motor response, a process referred to as visuomotor reaction. On the behavioural level, athletes have long been established to achieve faster simple visuomotor reaction times when compared to non-athletes. However, although the superior performance in athletes has been attributed to the central nervous system, the underlying neural mechanisms remained poorly studied. More recently, a growing number of neurophysiological and neuroimaging studies systematically addressed the functional and structural modulations in the athletes' visual and motor systems as well as their contribution to visuomotor performance...
May 8, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29736728/effects-and-dose-response-relationship-of-balance-training-on-balance-performance-in-youth-a-systematic-review-and-meta-analysis
#11
REVIEW
Arnd Gebel, Melanie Lesinski, David G Behm, Urs Granacher
BACKGROUND: Effects and dose-response relationships of balance training on measures of balance are well-documented for healthy young and old adults. However, this has not been systematically studied in youth. OBJECTIVES: The objectives of this systematic review and meta-analysis were to quantify effects of balance training (BT) on measures of static and dynamic balance in healthy children and adolescents. Additionally, dose-response relations for BT modalities (e...
May 7, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29734457/11-361-sports-injuries-in-a-15-year-survey-of-a-level-i-emergency-trauma-department-reveal-different-severe-injury-types-in-the-6-most-common-team-sports
#12
Werner Krutsch, Volker Krutsch, Franz Hilber, Christian Pfeifer, Florian Baumann, Johannes Weber, Paul Schmitz, Maximilian Kerschbaum, Michael Nerlich, Peter Angele
INTRODUCTION:  Severe sports-related injuries are a common affliction treated in Level I trauma departments. Detailed knowledge on injury characteristics from different medical settings is essential to improve the development of injury prevention strategies in different team sports. METHODS:  Team sport injuries were retrospectively analysed in a Level I trauma department registry over 15 years. Injury and treatment data were compared with regard to competition and training exposure...
May 7, 2018: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29730533/establishing-the-reliability-of-a-novel-battery-of-range-of-motion-tests-to-enable-evidence-based-classification-in-para-swimming
#13
Vaughan P Nicholson, Jemima G Spathis, Luke W Hogarth, Mark J Connick, Emma M Beckman, Sean M Tweedy, Carl J Payton, Brendan J Burkett
OBJECTIVES: To evaluate the reliability of swimming-specific range of movement tests developed in order to permit evidenced-based classification in the sport of para swimming. DESIGN: Test-retest intra- and inter-examiner reliability. SETTING: International Swimming training camps and university exercise science departments. PARTICIPANTS: 42 non-disabled participants (mean age 23.2 years) and 24 Para swimmers (mean age 28...
April 30, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29722250/the-effects-of-8-weeks-of-two-different-training-methods-on-on-sight-lead-climbing-performance
#14
Marc Philippe, Ingo Filzwieser, Veronika Leichtfried, Cornelia Blank, Simon Haslinger, Johannes Fleckenstein, Wolfgang Schobersberger
BACKGROUND: Despite climbing being an increasingly popular sporting pursuit, there have been very few scientific evaluations of appropriate training methods for competitive climbers. The aim of this study was to investigate the effects of an 8-week climbing-specific muscular hypertrophy (MH) or muscular endurance (ME) resistance training program on the on-sight lead climbing performance in a similar setting to a world cup. METHODS: Twenty-three elite male and female climbers (age: 25...
May 2, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29721691/nonoperative-treatment-of-pcl-injuries-goals-of-rehabilitation-and-the-natural-history-of-conservative-care
#15
REVIEW
Dean Wang, Jessica Graziano, Riley J Williams, Kristofer J Jones
PURPOSE OF REVIEW: To review the current practices of nonoperative management of posterior cruciate ligament (PCL) injuries, the natural history of conservative care, and the latest PCL rehabilitation strategies. RECENT FINDINGS: PCL injuries often occur as part of a multiligamentous knee injury and occasionally occur in isolation. Although patients may be able to tolerate or compensate for a PCL-deficient knee, long-term outcomes after conservative care demonstrate a high rate of arthrosis in the medial and patellofemoral compartments resulting from altered knee kinematics and loads...
May 2, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29720949/active-recovery-after-high-intensity-interval-training-does-not-attenuate-training-adaptation
#16
Thimo Wiewelhove, Christoph Schneider, Alina Schmidt, Alexander Döweling, Tim Meyer, Michael Kellmann, Mark Pfeiffer, Alexander Ferrauti
Objective: High-intensity interval training (HIIT) can be extremely demanding and can consequently produce high blood lactate levels. Previous studies have shown that lactate is a potent metabolic stimulus, which is important for adaptation. Active recovery (ACT) after intensive exercise, however, enhances blood lactate removal in comparison with passive recovery (PAS) and, consequently, may attenuate endurance performance improvements. Therefore, the aim of this study was to examine the influence of regular ACT on training adaptations during a HIIT mesocycle...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29716626/injury-in-kite-buggying-the-role-of-the-out-of-buggy-experience
#17
F Feletti, E Brymer
BACKGROUND: The purpose of this descriptive, epidemiological study is to classify injury patterns and determine dynamics of injuries, possible causes and preventive measures. METHODS: A questionnaire was filled in by 127 kite buggying enthusiasts in 17 countries. Injuries were classified by type and anatomical site. Incident causes were analysed using the Haddon matrix. RESULTS: Injuries classified as moderate or severe (AIS score ≥ 2) were sustained by 26% of kite buggy enthusiasts...
May 2, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29708524/subject-specific-musculoskeletal-model-for-studying-bone-strain-during-dynamic-motion
#18
Henry Wang, Scott Dueball
Bone stress injuries are common in sports and military trainings. Repetitive large ground impact forces during training could be the cause. It is essential to determine the effect of high ground impact forces on lower-body bone deformation to better understand the mechanisms of bone stress injuries. Conventional strain gauge measurement has been used to study in vivo tibia deformation. This method is associated with limitations including invasiveness of the procedure, involvement of few human subjects, and limited strain data from small bone surface areas...
April 11, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29707231/preventing-lower-extremity-injury-in-elite-orienteerers-study-protocol-for-a-randomised-controlled-trial
#19
Philip von Rosen, Bodil Halvarsson
Background: The high physical load associated with running through uneven terrain contributes toorienteerers being exposed to high injury risk, where the majority of injuries are located in the lower extremities. Specific training programmes have been effective at reducing injury risk in sports. Yet no trial has been conducted in elite orienteering. The aim of this study is to investigate the effectiveness of a specific training programme in preventing lower extremity injury in adult elite orienteerers...
2018: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29706822/high-intensity-sport-specific-cardiac-rehabilitation-training-of-a-22-year-old-competitive-cyclist-after-spontaneous-coronary-artery-dissection
#20
Nicholas Weber, Adam Weber, Pasquale Carbone, Anne Lawrence, Tim Bilbrey, Jeffrey M Schussler, Jenny Adams
A 22-year-old man with spontaneous coronary artery dissection wanted to assess the feasibility of returning to competitive cycling. He was referred to the cardiac rehabilitation (CR) program at Baylor Hamilton Heart and Vascular Hospital where staff designed a high-intensity, sport-specific training program that simulated the movements and forces associated with his goal activity. The program was symptom limited and enabled the patient to train earlier and at a higher intensity than is typically allowed in conventional CR programs...
April 2018: Proceedings of the Baylor University Medical Center
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