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https://www.readbyqxmd.com/read/28811191/can-psychological-well-being-scales-and-hormone-levels-be-used-to-predict-acute-performance-of-anaerobic-training-tasks-in-elite-female-volleyball-players
#1
Juan Mielgo-Ayuso, Michael C Zourdos, Vicente J Clemente-Suárez, Julio Calleja-González, Amber M Shipherd
The purpose of this study was to examine relationships between pre-training psychological well-being assessment scales (General Health Questionnaire-28-GHQ-28, Competitive State Anxiety Inventory-2-CSAI-2, Sport Competition Anxiety Test-SCAT, State-Trait Anxiety Inventory-S-STAI-S, Oviedo Sleep Questionnaire-OSQ and Psychological Characteristics Related to Sport Performance-PCSP), and pre-training stress hormone concentrations (cortisol-C, total testosterone-TT, free testosterone-FT, adrenocorticotropic hormone-ACTH and testosterone/cortisol-T/C ratios), on acute neuromuscular performance (ANP) in female volleyballers...
August 12, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28801751/activity-demands-during-multi-directional-team-sports-a-systematic-review
#2
REVIEW
Jeffrey B Taylor, Alexis A Wright, Steven L Dischiavi, M Allison Townsend, Adam R Marmon
BACKGROUND: Late-stage rehabilitation programs often incorporate 'sport-specific' demands, but may not optimally simulate the in-game volume or intensity of such activities as sprinting, cutting, jumping, and lateral movement. OBJECTIVE: The aim of this review was to characterize, quantify, and compare straight-line running and multi-directional demands during sport competition. DATA SOURCES: A systematic review of PubMed, CINAHL, SPORTDiscus, and Cochrane Central Register of Controlled Trials databases was conducted...
August 12, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28796124/evaluation-of-strength-and-conditioning-measures-with-game-success-in-division-i-collegiate-volleyball-a-retrospective-study
#3
Jennifer A Bunn, Greg A Ryan, Gabriel R Button, S Zhang
The purpose of this study was to retrospectively assess relationships between strength and conditioning (SC) measures and game performance in Division I volleyball. Five years of SC and game data were collected from one women's Division I collegiate team, n = 76. SC measures included: T-drill, 18.3 m sprint, back squat, hang clean, vertical jump, and broad jump. All game and SC stats were normalized to Z-scores. Analyses included assessing SC differences by position, and multiple stepwise regression to assess relationships between game and SC stats...
August 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28782096/the-prevention-of-musculoskeletal-injuries-in-volleyball-the-systematic-development-of-an-intervention-and-its-feasibility
#4
Vincent Gouttebarge, Marije van Sluis, Evert Verhagen, Johannes Zwerver
BACKGROUND: A scientific research project has started in the Netherlands with the aim of developing and implementing an evidence-based intervention to prevent the occurrence of musculoskeletal injuries among young and adult recreational volleyball players. This article describes (i) the systematic development of the intervention; and (ii) the assessment of its feasibility in terms of relevancy, suitability and usability. SYSTEMATIC DEVELOPMENT OF THE INTERVENTION: The development of the intervention was based on the Intervention Mapping structured and systematic process...
December 2017: Injury Epidemiology
https://www.readbyqxmd.com/read/28768502/preventing-musculoskeletal-injuries-among-recreational-adult-volleyball-players-design-of-a-randomised-prospective-controlled-trial
#5
Vincent Gouttebarge, Johannes Zwerver, Evert Verhagen
BACKGROUND: Both acute and overuse injuries are common among recreational volleyball players, especially finger/wrist, ankle, shoulder and knee injuries. Consequently, an intervention ('VolleyVeilig') was developed to prevent or reduce the occurrence of finger/wrist, shoulder, knee and ankle injuries among recreational volleyball players. This article describes the design of a study evaluating the effectiveness of the developed intervention on the one-season occurrence of finger/wrist, shoulder, knee and ankle injuries among recreational adult volleyball players...
August 2, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28768338/combined-effects-of-fatigue-and-surface-instability-on-jump-biomechanics-in-elite-athletes
#6
Olaf Prieske, Marie Demps, Melanie Lesinski, Urs Granacher
The present study aimed to examine the effects of fatigue and surface instability on kinetic and kinematic jump performance measures. Ten female and 10 male elite volleyball players (18±2 years) performed repetitive vertical double-leg box jumps until failure. Pre and post fatigue, jump height/performance index, ground reaction force and knee flexion/valgus angles were assessed during drop and countermovement jumps on stable and unstable surfaces. Fatigue, surface condition, and sex resulted in significantly lower drop jump performance and ground reaction force (p≤0...
August 2, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28745472/effect-of-eight-weeks-of-upper-body-plyometric-training-during-the-competitive-season-on-professional-female-volleyball-players
#7
David Valades, José M Palao, Pedro Femia, Aurelio Ureña
BACKGROUND: The purpose of this study was to assess the effect of incorporating specific upper-body plyometric training for the spike into the competitive season of a women's professional volleyball team. METHODS: A professional team from the Spanish first division participated in the study. An A-B-A' quasi-experimental design with experimental and control groups was used. The independent variable was the upper-body plyometric training for eight weeks during the competitive season...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28739314/concussion-rates-in-u-s-middle-school-athletes-2015-2016-school-year
#8
Zachary Y Kerr, Nelson Cortes, Amanda M Caswell, Jatin P Ambegaonkar, Kaitlin Romm Hallsmith, A Frederick Milbert, Shane V Caswell
INTRODUCTION: Concussion incidence estimates in middle school sports settings are limited. This study examines concussion incidence in nine U.S. middle schools during the 2015-2016 school year. METHODS: Concussion data originated from nine public middle schools in Prince William County, Virginia, during the 2015-2016 school year. Certified athletic trainers collected concussion and athlete exposure (AE) data in school-sanctioned games and practices in boys' baseball, basketball, football, soccer, track, and wrestling; and girls' basketball, cheerleading, soccer, softball, track, and volleyball...
July 21, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28731885/effectiveness-of-a-posterior-shoulder-stretching-program-on-university-level-overhead-athletes-randomized-controlled-trial
#9
Judy C Chepeha, David J Magee, Martin Bouliane, David Sheps, Lauren Beaupre
OBJECTIVE: To determine whether a posterior shoulder stretch was effective in increasing internal rotation (IR) and horizontal adduction (HAd) range of motion (ROM) in overhead athletes identified as having reduced mobility. DESIGN: Randomized controlled trial (parallel design). SETTING: University-based sports medicine clinic. PARTICIPANTS: Thirty-seven university-level athletes in volleyball, swimming, and tennis, with IR ROM deficits ≥15°, were randomized into intervention or control groups...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28717619/comparison-of-dynamic-postural-stability-scores-between-athletes-with-and-without-chronic-ankle-instability-during-lateral-jump-landing
#10
Zeinab Shiravi, Azadeh Shadmehr, Saeed Talebian Moghadam, Behrouz Attarbashi Moghadam
BACKGROUNDS: Many ankle injuries occur while participating in sports that require jumping and landing such as basketball, volleyball and soccer. Most recent studies have investigated dynamic postural stability of patients with chronic ankle instability after landing from a forward jump. The present study aimed to investigate the dynamic postural stability of the athletes who suffer from chronic ankle sprain while landing from a lateral jump. METHODS: Twelve athletes with self-reported unilateral chronic ankle instability (4 females and 8 males) and 12 matched controls (3 females and 9 males) voluntarily participated in the study...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28713471/assessment-of-specificity-of-the-badcamp-agility-test-for-badminton-players
#11
Luiz de França Bahia Loureiro, Mário Oliveira Costa Dias, Felipe Couto Cremasco, Maicon Guimarães da Silva, Paulo Barbosa de Freitas
The Badcamp agility test was created to evaluate agility of badminton players. The Badcamp is a valid and reliable test, however, a doubt about the need for the use of this test exists as simpler tests could provide similar information about agility in badminton players. Thus, the aim of this study was to examine the specificity of the Badcamp, comparing the performance of badminton players and athletes from other sports in the Badcamp and the shuttle run agility test (SRAT). Sixty-four young male and female athletes aged between 14 and 16 years participated in the study...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28680897/high-prevalence-of-nontraumatic-shoulder-pain-in-a-regional-sample-of-female-high-school-volleyball-athletes
#12
Kayt E Frisch, Jacob Clark, Chad Hanson, Chris Fagerness, Adam Conway, Lindsay Hoogendoorn
BACKGROUND: Shoulder pain is becoming increasingly problematic in young players as volleyball gains popularity. Associations between repetitive motion and pain and overuse injury have been observed in other overhand sports (most notably baseball). Studies of adult athletes suggest that there is a shoulder pain and overuse problem present in volleyball players, but minimal research has been done to establish rates and causes in juvenile participants. PURPOSE: To establish rates of shoulder pain, regardless of whether it resulted in a loss of playing time, in female high school volleyball players...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28677513/-a-teenage-girl-with-non-infectious-osteomyelitis
#13
A C Deden, P Hissink Muller, N M Appelman-Dijkstra, H M Kroon, G A Tramper-Stranders
BACKGROUND: Osteomyelitis is usually caused by an infection. A non-infectious cause should be considered if antibiotic treatment is insufficiently effective and disease is recurrent, multifocal or migrating. CASE DESCRIPTION: A 14-year-old girl, an active volleyball player, developed episodes of fever and pain in her right lower leg. MRI showed osteomyelitis in her right tibia. She received prolonged intravenous antibiotic treatment. Shortly after recovery, she developed osteomyelitis in her left lower leg...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28673119/biomechanical-differences-of-arm-swing-countermovement-jumps-on-sand-and-rigid-surface-performed-by-elite-beach-volleyball-players
#14
George Giatsis, Vassilios Panoutsakopoulos, Iraklis A Kollias
The purpose of this study was to investigate the possible arm swing effect on the biomechanical parameters of vertical counter movement jump due to differences of the compliance of the take-off surface. Fifteen elite male beach-volleyball players (26.2 ± 5.9 years; 1.87 ± 0.05 m; 83.4 ± 6.0 kg; mean ± standard deviation, respectively) performed counter movement jumps on sand and on a rigid surface with and without an arm swing. Results showed significant (p < .05) surface effects on the jump height, the ankle joint angle at the lowest height of the body center of mass and the ankle angular velocity...
July 4, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28670285/muscle-and-tendon-adaptation-in-adolescence-elite-volleyball-athletes-compared-to-untrained-boys-and-girls
#15
Falk Mersmann, Georgios Charcharis, Sebastian Bohm, Adamantios Arampatzis
Though the plasticity of human tendons is well explored in adults, it is still unknown how superimposed mechanical loading by means of athletic training affects the properties of tendons during maturation. Due to the increased responsiveness of muscle to mechanical loading, adolescence is an important phase to investigate the effects of training on the mechanical properties of tendons. Hence, in the present study we compared vastus lateralis (VL) architecture, muscle strength of the knee extensor muscles and patellar tendon mechanical properties of male and female adolescent elite athletes to untrained boys and girls...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28665770/blocking-landing-techniques-in-volleyball-and-the-possible-association-with-anterior-cruciate-ligament-injury
#16
David Zahradnik, Daniel Jandacka, Michal Holcapek, Roman Farana, Jaroslav Uchytil, Joseph Hamill
The number and type of landings performed after blocking during volleyball matches has been related to the potential risk of ACL injury. The aim of the present study was to determine whether gender affects the frequency of specific blocking landing techniques with potential risk of ACL injury from the perspective of foot contact and subsequent movement after the block used by volleyball players during competitive matches. Three matches involving four female volleyball teams (fourteen sets) and three matches involving four male volleyball teams (thirteen sets) in the Czech Republic were analyzed for this study...
June 30, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28664327/effects-of-mindfulness-practice-on-performance-relevant-parameters-and-performance-outcomes-in-sports-a-meta-analytical-review
#17
REVIEW
Lucia Bühlmayer, Daniel Birrer, Philipp Röthlin, Oliver Faude, Lars Donath
BACKGROUND: Mindfulness as a present-oriented form of mental training affects cognitive processes and is increasingly considered meaningful for sport psychological training approaches. However, few intervention studies have examined the effects of mindfulness practice on physiological and psychological performance surrogates or on performance outcomes in sports. OBJECTIVE: The aim of the present meta-analytical review was to examine the effects of mindfulness practice or mindfulness-based interventions on physiological and psychological performance surrogates and on performance outcomes in sports in athletes over 15 years of age...
June 29, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28662108/short-term-adaptations-following-complex-training-in-team-sports-a-meta-analysis
#18
Tomás T Freitas, Alejandro Martinez-Rodriguez, Julio Calleja-González, Pedro E Alcaraz
OBJECTIVE: The purpose of this meta-analysis was to study the short-term adaptations on sprint and vertical jump (VJ) performance following Complex Training (CT) in team-sports. CT is a resistance training method aimed at developing both strength and power, which has a direct effect on sprint and VJ. It consists on alternating heavy resistance training exercises with plyometric/power ones, set for set, on the same workout. METHODS: A search of electronic databases up to July 2016 (PubMed-MEDLINE, SPORTDiscus, Web of Knowledge) was conducted...
2017: PloS One
https://www.readbyqxmd.com/read/28661204/user-survey-of-3-ankle-braces-in-soccer-volleyball-and-running-which-brace-fits-best
#19
Kasper Janssen, Anjulie Van Den Berg, Willem Van Mechelen, Evert Verhagen
CONTEXT:   Recurrence rates for ankle sprains are high. Therefore, preventive measures such as ankle bracing during sports are recommended. OBJECTIVE:   To systematically evaluate the perceived ease of use, quality, comfort, stability, and hindrance of and the overall satisfaction with 3 contemporary brace types in 3 types of sports. DESIGN:   Randomized comparative user survey. SETTING:   Recreational sports: soccer, volleyball, and running...
August 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28658084/addition-of-glute-ham-gastroc-raise-to-a-resistance-training-program-effect-on-jump-propulsion-and-landing
#20
Loren Z F Chiu, Anita Yaremko, Gabriella L vonGaza
Exercises such as squats and cleans are commonly used in resistance training programs to enhance athletic performance. However, these exercises may not effectively train the gastrocnemius, an important muscle for energy generation and absorption. The purpose of this research was to examine the effects of adding glute-ham-gastroc raise exercise to target the gastrocnemius to a traditional resistance training program involving squats and cleans. Vertical jump height, weight-bearing ankle dorsiflexion, and jump propulsion and landing mechanics were examined before and after an eight-week training intervention in female youth volleyball players...
June 22, 2017: Journal of Strength and Conditioning Research
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