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https://www.readbyqxmd.com/read/29922383/what-are-the-most-widely-used-and-effective-attack-coverage-systems-in-men-s-volleyball
#1
Raúl Hileno, Antonio García-de-Alcaraz, Bernat Buscà, Cristòfol Salas, Oleguer Camerino
In volleyball, attack coverage is one of the play actions most neglected in coaching and research. The purpose of this study was to find out which attack coverage systems are used by high-level men's teams in different game situations and the characteristics of the most effective systems. We analysed 15 matches from the 2010 Men's Pan-American Volleyball Cup, with a total of 1,415 coverage actions. Chi-square tests for independence, adjusted residuals analysis and calculations of standardised mean difference were performed...
June 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29922380/skeletal-muscle-cell-damage-indicators-in-volleyball-players-after-the-competitive-phase-of-the-annual-training-cycle
#2
Mateusz Radojewski, Tomasz Podgórski, Barbara Pospieszna, Jakub Kryściak, Ewa Śliwicka, Joanna Karolkiewicz
The aim of the study was to evaluate the impact of the competitive phase on physiological and metabolic indices and selected markers of skeletal muscle damage in male volleyball players. The study group consisted of 24 young male volleyball players. During the study, participants underwent two series of measurements, before and after the competitive phase of the annual training cycle. In both study terms, players performed an incremental treadmill running test to determine their ventilatory threshold and maximal oxygen uptake...
June 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29905599/when-the-injury-s-healing-process-meets-the-needs-of-a-top-level-volleyball-player-a-non-conventional-treatment-of-a-mallet-fracture-re-injury
#3
Daniele Checcarelli, Mauro Zampolini, Michele Berloco, Claudia Fusco, Levent Özçakar
Managing top-level athlete's recovery after an injury is very complicated because it requires a challenging combination of clinical and social/professional aspects with the need to return as soon as possible to sports play. Herein, we report a top-level volleyball player for whom a finger splint combined with a custom made thermoplastic protection was used for the conservative management of a Mallet fracture re-injury. This way our player continued training and competitions in contrast to conventional rehabilitation protocols which suggest to avoid new traumas until the healing phase is completed...
June 13, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29877677/a-systematic-review-on-posterior-circumflex-humeral-artery-pathology-sports-and-professions-at-risk-and-associated-risk-factors
#4
Rik B Kraan, Lisa Beers, Daan van de Pol, Joost G Daams, Mario Maas, P Paul Kuijer
INTRODUCTION: Posterior circumflex humeral artery (PCHA) aneurysm formation and thrombosis as overuse injury in the dominant shoulder can result in ischemia of the forearm, hand and digits due to arterial embolisms. Increased awareness among physicians is necessary as PCHA pathology (PCHAP) might be underdiagnosed. Knowledge of sports and professions at risk and risk-factors for obtaining PCHAP is essential for the development of future preventive measures. This study aims to identify sports and professions at risk as well as risk factors for PCHAP...
June 7, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29809056/effects-of-athlete-dependent-traits-on-joint-and-system-countermovement-jump-power
#5
Kym J Williams, Dale W Chapman, Elissa J Phillips, Nick Ball
PURPOSE: To establish the influence of athlete-dependent characteristics on the generation and timing of system and individual joint powers during a countermovement jump (CMJ). METHODS: Male national representative athletes from Volleyball ([VB] n=7), Basketball ([BB], n=6) and Rugby Union ([RU] n=7) performed a set of three CMJ's at relative barbell loads of 0, 10, 20, 30, and 40% of absolute back squat strength. Ground reaction forces and joint kinematics were captured using a 16 camera motion capture system integrated with two in-ground force plates...
May 29, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29807269/influence-of-pelvic-padding-and-kinesiology-taping-on-pain-perception-kinematics-and-kinetics-of-falls-in-female-volleyball-athletes
#6
Cleopatra L Y Lam, Shirley S M Fong, Joanne W Y Chung, Louisa M Y Chung, Karen P Y Liu, Young-Hyeon Bae, Ada W W Ma
BACKGROUND: Volleyball digging techniques may cause pelvic injuries among female volleyball athletes. Pelvic padding and Kinesiology Taping (KT) may reduce impact force and pain and improve posture during a fall. This study examined the effects of pelvic padding and KT on pain perception, fall kinematics, and kinetics among female volleyball athletes. METHODS: Twenty-four female volleyball athletes were exposed to two pelvic padding scenarios (with and without padding) and two KT conditions (with and without KT applied on the rectus abdominis muscle) during a fall in the forward direction...
May 22, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29804139/isometric-strength-of-the-hip-abductors-and-external-rotators-in-athletes-with-and-without-patellar-tendinopathy
#7
Z J Zhang, W C Lee, G Y F Ng, S N Fu
PURPOSE: This study aims to compare the isometric strength of hip abductors and external rotators in male athletes with and without patellar tendinopathy (PT), and to examine the correlation between hip strength, pain, and functional scores. METHODS: Sixty male athletes (30 with PT and 30 controls) were recruited from local volleyball and basketball teams. The isometric strength of the hip abductors and external rotators was quantified using a belt-stabilized handheld dynamometer...
May 26, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29792104/association-of-hip-and-foot-factors-with-patellar-tendinopathy-jumper-s-knee-in-athletes
#8
Luciana D Mendonça, Juliana M Ocarino, Natália F N Bittencourt, Luciana G Macedo, Sérgio T Fonseca
Study Design Clinical measurement, cross-sectional. Background Investigations on the causes of patellar tendinopathy (PT) should consider impairments at the hip and foot/ankle since they are known to influence movement patterns and affect patellar tendon loading. Objectives To investigate, by means of CART analysis, impairments of the hip and foot/ankle that are associated with PT in volleyball and basketball athletes. Methods One-hundred and ninety athletes were assessed for impairments of the hip and foot/ankle including: shank-forefoot alignment (SFA), ankle dorsiflexion range of motion (DF ROM), iliotibial band flexibility, passive hip internal rotation (IR) ROM, and hip external rotator (ER) and hip abductor isometric strength...
May 23, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29772095/effect-of-specific-exercise-strategy-on-strength-and-proprioception-in-volleyball-players-with-infraspinatus-muscle-atrophy
#9
José Inácio Salles, Victor Rodrigues Amaral Cossich, João Matheus Guimarães, Geraldo Motta Filho, Dylan Morrissey
Infraspinatus muscle atrophy is common in professional volleyball players, but it is unclear whether commonly observed strength and proprioception deficits can be reversed with training. Fifty-four participants were recruited into an infraspinatus atrophy group (IAG, n = 18) and a non-atrophy group (NAG, n=18) of elite volleyballers plus a healthy non-athletic control group (CG, n = 18). IAG were trained with a progressive, specific shoulder external rotator strengthening routine for 32 sessions over 8 weeks...
May 17, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29765494/the-oxidant-antioxidant-equilibrium-and-inflammatory-process-indicators-after-an-exercise-test-on-the-alterg-antigravity-treadmill-in-young-amateur-female-athletes
#10
Łukasz Sielski, Paweł Sutkowy, Agnieszka Skopowska, Katarzyna Pawlak-Osińska, Zofia Augustyńska, Katarzyna Hewelt, Radosław Drapała, Alina Woźniak
The AlterG antigravity treadmill allows running with a considerable weight reduction. Physical exercise practiced on this treadmill is an innovative method supporting the treatment of injuries in sports and rehabilitation of patients. The aim of the study was to investigate the effect of a 30 min run on the AlterG treadmill with 80% body weight reduction comparing the effect to the similar effort on the classic treadmill on the redox equilibrium and the activity of selected lysosomal enzymes and a serine protease inhibitor in the blood of amateur minor female volleyball players...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29745752/predicting-volleyball-serve-reception-at-group-level
#11
Ana Paulo, Frank T J M Zaal, Ludovic Seifert, Sofia Fonseca, Duarte Araújo
In a group-serve-reception task, how does serve-reception become effective? We addressed "who" receives/passes the ball, what task-related variables predict action mode selection and whether the action mode selected was associated with reception efficacy. In 182 serve-receptions we tracked the ball and the receivers' heads with two video-cameras to generate 3D world-coordinates reconstructions. We defined receivers' reception-areas based on Voronoi diagrams (VD). Our analyses of the data showed that this approach was accurate in describing "who" receives the serve in 95...
May 10, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29741447/health-effects-of-wrist-loading-sports-during-youth-a-systematic-literature-review
#12
Laura S Kox, P Paul F M Kuijer, Dagmar A J Thijssen, Gino M M J Kerkhoffs, Rick R van Rijn, Monique H W Frings-Dresen, Mario Maas
BACKGROUND: The benefits and risks of performing popular wrist-loading sports at a young age have not been investigated systematically. We aimed to evaluate positive and negative long-term wrist-related health effects of sports performance requiring repetitive wrist loading during youth. METHODS: Six databases were searched for cohort and cross-sectional studies. Three investigators selected studies evaluating quantitatively measured health effects of upper extremities in athletes practicing wrist-loading sports (gymnastics, tennis, volleyball, field hockey, rowing, and judo) for minimally 4 months before the age of 18...
May 9, 2018: Journal of Physical Activity & Health
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
#13
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/29731401/adverse-effects-of-common-sports-and-recreational-activities-on-male-reproduction
#14
REVIEW
Kush Panara, John M Masterson, Luis F Savio, Ranjith Ramasamy
CONTEXT: Male factor infertility plays a significant role in infertility. Many factors have been associated with male infertility; however, the link between many sports and recreational factors and male reproduction remains poorly characterized. OBJECTIVE: To evaluate the current literature regarding the impact of many common sports and recreational factors on male reproduction. EVIDENCE ACQUISITION: A comprehensive PubMed and Embase search for relevant articles published between 1970 and 2017 was performed by combining the following search terms: male, sports (including individual sports), traumatic brain injury, sauna, hot tub, fertility, erectile dysfunction, varicocele, environment, cell phone, and laptop computer...
May 3, 2018: European Urology Focus
https://www.readbyqxmd.com/read/29719738/motor-experience-with-a-sport-specific-implement-affects-motor-imagery
#15
Lanlan Zhang, Yanling Pi, Hua Zhu, Cheng Shen, Jian Zhang, Yin Wu
The present study tested whether sport-specific implements facilitate motor imagery, whereas nonspecific implements disrupt motor imagery. We asked a group of basketball players (experts) and a group of healthy controls (novices) to physically perform (motor execution) and mentally simulate (motor imagery) basketball throws. Subjects produced motor imagery when they were holding a basketball, a volleyball, or nothing. Motor imagery performance was measured by temporal congruence, which is the correspondence between imagery and execution times estimated as (imagery time minus execution time) divided by (imagery time plus execution time), as well as the vividness of motor imagery...
2018: PeerJ
https://www.readbyqxmd.com/read/29688136/predictors-of-attack-performance-in-high-level-male-volleyball-players
#16
Dimitrios Challoumas, Andreas Artemiou
PURPOSE: In volleyball, teams win the majority of points through attacks ('spikes') and therefore attack effectiveness (AE) is one of the most important predictors of victory. Traditionally, greater vertical jump heights (VJH) and higher spike speeds (SS) have been thought to increase AE, however relevant research is limited. Our aim was to assess the relationship of VJH and SS with AE as well as identify possible associations of demographic and anthropometric factors, including common volleyball injuries, with VJH, SS and AE...
April 24, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29659298/agreement-between-visual-assessment-and-2-dimensional-analysis-during-jump-landing-among-healthy-female-athletes
#17
Alon Rabin, Ofira Einstein, Zvi Kozol
CONTEXT:   Altered movement patterns, including increased frontal-plane knee movement and decreased sagittal-plane hip and knee movement, have been associated with several knee disorders. Nevertheless, the ability of clinicians to visually detect such altered movement patterns during high-speed athletic tasks is relatively unknown. OBJECTIVE:   To explore the association between visual assessment and 2-dimensional (2D) analysis of frontal-plane knee movement and sagittal-plane hip and knee movement during a jump-landing task among healthy female athletes...
April 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29649012/clinical-improvements-are-not-explained-by-changes-in-tendon-structure-on-utc-following-an-exercise-program-for-patellar-tendinopathy
#18
Mathijs van Ark, Ebonie Rio, Jill Cook, Inge van den Akker-Scheek, James E Gaida, Johannes Zwerver, Sean Docking
OBJECTIVES: The aim of this study was to investigate the effects of a 4-week in-season exercise program of isometric or isotonic exercises on tendon structure and dimensions as quantified by Ultrasound Tissue Characterization (UTC). DESIGN: Randomized clinical trial. Volleyball and basketball players (16-31 years, n=29) with clinically diagnosed patellar tendinopathy were randomized to a 4-week isometric or isotonic exercise program. The programs were designed to decrease patellar tendon pain...
April 11, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29649011/ultrasonographic-findings-in-a-latissimus-dorsi-injury-in-a-beach-volleyball-player
#19
Manuel Wong-On, Edgar Mora-Montoya
No abstract text is available yet for this article.
April 11, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29628407/posterior-circumflex-humeral-artery-pathology-and-digital-ischemia-in-elite-volleyball-symptoms-risk-factors-suggestions-for-clinical-management
#20
Daan van de Pol, P Paul F M Kuijer, Aart Terpstra, Marja Pannekoek-Hekman, Sena Alaeikhanehshir, Olivier Bouwmeester, R Nils Planken, Mario Maas
OBJECTIVES: To assess the association between posterior circumflex humeral artery (PCHA) pathology (PCHAP), symptoms and associated risk factors, in elite volleyball players, and to suggest profiles for clinical management and monitoring. DESIGN: Cross-sectional study. METHODS: A questionnaire assessed symptoms of digital ischemia (DI) in the dominant hand and risk factors among 278 elite indoor and beach volleyball players of whom 6.1% (17/278) was diagnosed with PCHAP using ultrasound...
March 28, 2018: Journal of Science and Medicine in Sport
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