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https://www.readbyqxmd.com/read/28731885/effectiveness-of-a-posterior-shoulder-stretching-program-on-university-level-overhead-athletes-randomized-controlled-trial
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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...
June 29, 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
#12
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
https://www.readbyqxmd.com/read/28657911/efficacy-of-whole-body-vibration-board-training-on-strength-in-athletes-after-anterior-cruciate-ligament-reconstruction-a-randomized-controlled-study
#13
Cosimo Costantino, Silvia Bertuletti, Davide Romiti
OBJECTIVE: To evaluate whether an 8-week whole-body vibration training program may improve recovery of knee flexion/extension muscular strength in athletes after arthroscopic anterior cruciate ligament (ACL) reconstruction. DESIGN: Randomized controlled trial. SETTING: Single outpatient rehabilitation center. PARTICIPANTS: Thirty-eight female volleyball/basketball players (aged between 20 and 30), randomized into 2 treatment groups...
June 22, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28655743/landing-related-ankle-injuries-do-not-occur-in-plantarflexion-as-once-thought-a-systematic-video-analysis-of-ankle-injuries-in-world-class-volleyball
#14
Christopher Skazalski, Jacek Kruczynski, Martin Aase Bahr, Tone Bere, Rod Whiteley, Roald Bahr
BACKGROUND: Ankle injuries are prevalent in elite volleyball and suggested to result from player contact at the net. Traditionally, ankle sprains are thought to happen in a plantarflexed position, but case studies suggest plantarflexion may not be involved. AIM: Describe the injury situations and mechanisms of ankle injuries in world-class volleyball based on systematic video analysis of injuries reported through the Fédération Internationale de Volleyball (FIVB) Injury Surveillance System...
June 27, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28624016/longitudinal-change-in-patellofemoral-cartilage-thickness-cartilage-t2-relaxation-times-and-subchondral-bone-plate-area-in-adolescent-vs-mature-athletes
#15
Adam G Culvenor, Wolfgang Wirth, Susanne Maschek, Heide Boeth, Gerd Diederichs, Georg Duda, Felix Eckstein
OBJECTIVE: Patellofemoral cartilage changes have been evaluated in knee trauma and osteoarthritis; however, little is known about changes in patellar and trochlear cartilage thickness, T2 relaxation-time and subchondral bone plate area (tAB) during growth. Our prospective study aimed to explore longitudinal change in patellofemoral cartilage thickness, T2 and tAB in adolescent athletes, and to compare these data with those of mature (i.e., adult) athletes. MATERIALS AND METHODS: 20 adolescent (age 16±1years) and 20 mature (46±5years) volleyball players were studied over 2-years (10 men and 10 women each group)...
July 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28605232/sensorimotor-control-of-the-shoulder-in-professional-volleyball-players-with-isolated-infraspinatus-muscle-atrophy
#16
Samuele Contemori, Andrea Biscarini, Fabio Massimo Botti, Daniele Busti, Roberto Panichi, Vito Enrico Pettorossi
CONTEXT: Isolated infraspinatus muscle atrophy (IIMA) only affects the hitting shoulder of overhead-activity athletes, and is caused by suprascapular nerve neuropathy. No study has assessed the static and dynamic stability of the shoulder in overhead professional athletes with IIMA to reveal possible shoulder sensorimotor alterations. OBJECTIVE: To assess the shoulder static stability, dynamic stability, and strength in professional volleyball players with IIMA and in healthy control players...
June 12, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28595162/rotator-cuff-tendinopathy-alters-the-muscle-activity-onset-and-kinematics-of-scapula
#17
Hio Teng Leong, Gabriel Yin-Fat Ng, Shing Chung Chan, Siu Ngor Fu
Athletes with rotator cuff (RC) tendinopathy demonstrate an aberrant pattern of scapular motion which might relate to deficits in the scapular muscles. This study aimed to determine whether alteration in scapular kinematics is associated with deficits in the activity onset of scapular muscles. Forty-three male volleyball players (17 asymptomatic and 26 with RC tendinopathy) joined the study. Three-dimensional scapular kinematics was quantified using an acromial marker cluster method. The activity onset of the upper (UT), middle (MT), and lower trapezius (LT), and serratus anterior (SA) during arm abduction was assessed with electromyography...
August 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28566815/training-induced-changes-in-physical-performance-can-be-achieved-without-body-mass-reduction-after-eight-week-of-strength-and-injury-prevention-oriented-programme-in-volleyball-female-players
#18
M Lehnert, M Sigmund, P Lipinska, R Vařeková, M Hroch, Z Xaverová, P Stastny, P Háp, P Zmijewski
The purpose of the study was to analyse the changes in muscle strength, power, and somatic parameters in elite volleyball players after a specific pre-season training programme aimed at improving jumping and strength performance and injury prevention. Twelve junior female volleyball players participated in an 8-week training programme. Anthropometric characteristics, isokinetic peak torque (PT) single-joint knee flexion (H) and extension (Q) at 60º/s and 180º/s, counter movement jump (CMJ), squat jump (SJ), and reactive strength index (RSI) were measured before and after intervention...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28566804/reticulocyte-and-erythrocyte-hypochromia-markers-in-detection-of-iron-deficiency-in-adolescent-female-athletes
#19
J Malczewska-Lenczowska, J Orysiak, B Szczepańska, D Turowski, K Burkhard-Jagodzińska, J Gajewski
The aim of this study was to analyse the effectiveness of new haematology parameters related to reticulocytes and mature red blood cells to differentiate pre latent and latent iron deficiency. The study included 219 female athletes (aged 15-20 years) representing volleyball, handball, cycling, canoeing, cross-country skiing, swimming and judo. To assess iron status the concentration of ferritin, soluble transferrin receptor (sTfR), iron and total iron binding capacity (TIBC) were determined in serum. In addition to blood morphology, the mean cellular haemoglobin content in erythrocytes (CH) and reticulocytes (CHr), mean cellular haemoglobin concentration in reticulocytes (CHCMr), the percentage of erythrocytes (HYPOm) and reticulocytes (HYPOr) with decreased cellular haemoglobin concentration, the percentage of erythrocytes (LowCHm) and reticulocytes (LowCHr) with decreased cellular haemoglobin content, and percentage of erythrocytes with decreased volume (MICROm) were determined...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28558445/the-effect-of-beach-volleyball-training-on-muscle-performance-of-indoor-volleyball-players
#20
Dimitrios G Balasas, Kosmas Christoulas, Panagiotis Stefanidis, Efstratios Vamvakoudis, Theodoros M Bampouras
BACKGROUND: Beach volleyball is frequently used as a conditioning activity for indoor volleyball players, but little information exists regarding any performance benefits when transitioning from sand to hard court. The present study examined the effect of 12 weeks beach volleyball training on muscle performance of indoor volleyball players. METHODS: Eleven athletes who completed an indoor volleyball season and were willing to train and compete at beach volleyball, participated in the study...
May 30, 2017: Journal of Sports Medicine and Physical Fitness
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