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https://www.readbyqxmd.com/read/28628849/kinematic-patterns-underlying-disguised-movements-spatial-and-temporal-dissimilarity-compared-to-genuine-movement-patterns
#1
Fabian Helm, Jörn Munzert, Nikolaus F Troje
This study examined the kinematic characteristics of disguised movements by applying linear discriminant (LDA) and dissimilarity analyses to the motion data from 788 disguised and 792 non-disguised 7-m penalty throws performed by novice and expert handball field players. Results of the LDA showed that discrimination between type of throws (disguised vs. non-disguised) was more error-prone when throws were performed by experts (spatial: 4.6%; temporal: 29.6%) compared to novices (spatial: 1.0%; temporal: 20...
June 16, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28628348/relation-between-peak-knee-flexion-angle-and-knee-ankle-kinetics-in-single-leg-jump-landing-from-running-a-pilot-study-on-male-handball-players-to-prevent-acl-injury
#2
Mariam A Ameer, Qassim I Muaidi
OBJECTIVES: The relationship between knee kinematics and knee-ankle kinetics during the landing phase of single leg jumping has been widely studied to identify proper strategies for preventing non-contact ACL injury. However, there is a lack of study on knee-ankle kinetics at peak knee flexion angle during jumping from running. Hence, the purpose of this study is to establish the relationship between peak knee flexion angle, knee extension moment, ankle plantar flexion moment and ground reaction force in handball players in order to protect ACL from excessive stress during single leg jumping...
June 19, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28628245/effects-of-resistance-training-using-known-vs-unknown-loads-on-eccentric-phase-adaptations-and-concentric-velocity
#3
Jose Luis Hernández-Davó, Rafael Sabido, David G Behm, Anthony J Blazevich
The aims of this study were to compare both eccentric- and concentric-phase adaptations in highly-trained handball players to 4 weeks of twice-weekly rebound bench press throw training with varying loads (30%, 50% and 70% of 1-repetition maximum [1-RM]) using either known (KL) or unknown (UL) loads, and to examine the relationship between changes in eccentric- and concentric-phase performance. Twenty-eight junior team-handball players were divided into two experimental groups (KL or UL) and a control group...
June 19, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28599111/corrigendum
#4
(no author information available yet)
Krosshaug T, Steffen K, Kristianslund E, et al. The vertical drop jump is a poor screening test for ACL injuries in female elite soccer and handball players: a prospective cohort study of 710 athletes. Am J Sports Med. 2016;44(4):874-883. (Original DOI: 10.1177/0363546515625048 ).
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28593094/anodal-transcranial-direct-current-stimulation-tdcs-increases-isometric-strength-of-shoulder-rotators-muscles-in-handball-players
#5
Fuad Ahmad Hazime, Ronaldo Alves da Cunha, Renato Rozenblit Soliaman, Ana Clara Bezerra Romancini, Alberto de Castro Pochini, Benno Ejnisman, Abrahão Fontes Baptista
BACKGROUND: Weakness of the rotator cuff muscles can lead to imbalances in the strength of shoulder external and internal rotators, change the biomechanics of the glenohumeral joint and predispose an athlete to injury. Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that has demonstrated promising results in a variety of health conditions. However few studies addressed its potential approach in the realm of athletics. HYPOTHESIS/PURPOSE: The purpose of this study was to investigate if transcranial direct current stimulation (tDCS) technique increases the isometric muscle strength of shoulder external and internal rotators in handball athletes...
June 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28572783/a-structural-model-of-self-efficacy-in-handball-referees
#6
Pierluigi Diotaiuti, Lavinia Falese, Stefania Mancone, Francesco Purromuto
The study aimed to identify factors predicting self-efficacy in a sample of 248 Italian handball referees. The main hypothesis was that perception of teamwork efficacy would be a significant predictor of self-efficacy in handball referees. Participants completed an online questionnaire including Referee Self-Efficacy Scale (α = 0.85), Self-Determination Scale (α = 0.78), and an adaptation for Referees of the Sport Commitment Model (α = 0.80). Two hierarchical regression analyses have identified: (1) Enjoyment (β = 0...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28566804/reticulocyte-and-erythrocyte-hypochromia-markers-in-detection-of-iron-deficiency-in-adolescent-female-athletes
#7
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/28558442/specific-physiological-and-biomechanical-performance-in-elite-sub-elite-and-in-non-elite-male-team-handball-players
#8
Herbert Wagner, Philip X Fuchs, Serge P von Duvillard
BACKGROUND: Team handball is a dynamic sport game that is played professionally in numerous countries. However, knowledge about training and competition is based mostly on practical experience due to limited scientific studies. Consequently, the aims of our study were to compare specific physiological and biomechanical performance in elite, sub-elite and in non-elite male team handball players. METHODS: Thirty-six elite, sub-elite and non-elite male team handball players performed a game based performance test, upper-body and lower-body strength tests, 30m sprint test, counter movement jump test and an incremental treadmill running test...
May 30, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28542004/do-dynamic-fat-and-fat-free-mass-changes-follow-theoretical-driven-rules-in-athletes
#9
Analiza M Silva, Catarina N Matias, Diana A Santos, Paulo M Rocha, Cláudia S Minderico, Diana Thomas, Steven B Heymsfield, Luís B Sardinha
INTRODUCTION: Maximizing fat mass (FM) loss while preserving or increasing fat-free mass (FFM) is a central goal for athletic performance but the composition of body weight (BW) changes over time with training are largely unknown. PURPOSE: We aimed to analyze FM and FFM contributions to BW changes and to test if these contributions follow established rules and predictions over one athletic season. METHODS: 70 athletes (42 males; handball, volleyball, basketball, triathlon, and swimming) were evaluated from the beginning to the competitive stage of the season and were empirically divided into those who lost (n=20) or gained >1...
May 23, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28514233/energy-balance-over-one-athletic-season
#10
Analiza M Silva, Catarina N Matias, Diana A Santos, Diana Thomas, Anja Bosy-Westphal, Manfred J Müller, Steven B Heymsfield, Luís B Sardinha
INTRODUCTION: Magnitude and variation in energy balance (EB) components over an athletic season are largely unknown. PURPOSE: We investigated the longitudinal changes in EB over one season and explored the association between EB variation and the change in the main fat-free mass (FFM) components in highly trained athletes. METHODS: Eighty athletes (54 males; handball, volleyball, basketball, triathlete, and swimming) were evaluated from the beginning of the season to the main competition stage...
March 22, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28508705/physical-demands-of-game-based-training-drills-in-women-s-team-handball
#11
Live S Luteberget, Hege P Trollerud, Matt Spencer
Game-based training drills are popular in team sports. This study compared two game-based training conditions and official matches in team handball. Thirty-one women players wore inertial measurement units in five training sessions and five official matches. In training, 3vs3 and 6vs6 game-based training conditions were performed with a 5-min duration. PlayerLoad™ and high-intensity events (HIEs; >2.5 m · s(-1)) were extracted from the raw data. Data were analysed using magnitude-based inferences and reported with effect sizes (ESs)...
May 16, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28469758/frequent-immediate-knowledge-of-results-enhances-the-increase-of-throwing-velocity-in-overarm-handball-performance
#12
Igor Štirn, Jamie Carruthers, Marko Šibila, Primož Pori
In the present study, the effect of frequent, immediate, augmented feedback on the increase of throwing velocity was investigated. An increase of throwing velocity of a handball set shot when knowledge of results was provided or not provided during training was compared. Fifty female and seventy-three male physical education students were assigned randomly to the experimental or control group. All participants performed two series of ten set shots with maximal effort twice a week for six weeks. The experimental group received information regarding throwing velocity measured by a radar gun immediately after every shot, whereas the control group did not receive any feedback...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28469756/effect-of-core-training-on-male-handball-players-throwing-velocity
#13
Carmen Manchado, José García-Ruiz, Juan Manuel Cortell-Tormo, Juan Tortosa-Martínez
In handball, throwing velocity is considered to be one of the essential factors in achieving the ultimate aim of scoring a goal. The objective of the present study was to analyze the effect of a core training program on throwing velocity in 30 handball players (age 18.7 ± 3.4 years, body height 179.3 ± 7.0 cm, body mass 78.9 ± 7.7 kg), 16 of whom were in the junior category and 14 of whom were in the senior category. The 30 players were randomly divided into two groups, the control group (n = 15) and the experimental group (n = 15)...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28466014/physical-and-physiological-demands-of-recreational-team-handball-for-adult-untrained-men
#14
Susana C A Póvoas, Carlo Castagna, Carlos Resende, Eduardo Filipe Coelho, Pedro Silva, Rute Santos, André Seabra, Juan Tamames, Mariana Lopes, Morten Bredsgaard Randers, Peter Krustrup
Lack of motivation to exercise was reported as a major cause of sedentary behavior in adulthood. This descriptive study examines the acute physical and physiological demands of recreational team handball and evaluates whether it could be suggested as an exercise mode for fitness and health enhancement in 33-55-year-old untrained men. Time-motion, heart rate (HR), and blood lactate analyses were obtained from 4 recreational matches. Mean distance covered during the 60 min matches was 6012 ± 428 m. The players changed match activity 386 ± 70 times, of which high-intensity runs and unorthodox movements amounted to 59 ± 18 and 26 ± 26 per match, respectively...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28460708/shoulder-pain-in-adolescent-athletes-prevalence-associated-factors-and-its-influence-on-upper-limb-function
#15
Valéria M A de Oliveira, Ana C R Pitangui, Mayra R A Gomes, Hítalo A da Silva, Muana H P Dos Passos, Rodrigo C de Araújo
BACKGROUND: Sports that require the constant use of an upper limb demand the maximum kinetic chain efficiency in this segment. Immaturity of the musculoskeletal system, followed by failure in motor skills can expose adolescents to major reports of pain complaints, particularly for the shoulder. OBJECTIVE: To evaluate the prevalence of shoulder pain in adolescent athletes and identify possible factors associated with the complaint. METHOD: A total of 310 athletes, of both sexes and aged between 10 and 19 years old participated on this study...
March 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28452832/shoulder-dynamic-control-ratio-and-rotation-range-of-motion-in-female-junior-elite-handball-players-and-controls
#16
Robert van Cingel, Bas Habets, Linn Willemsen, Bart Staal
OBJECTIVE: To compare glenohumeral range of motion and shoulder rotator muscle strength in healthy female junior elite handball players and controls. DESIGN: Cross-sectional case-control study. SETTING: Sports medical center. PARTICIPANTS: Forty elite female handball players and 30 controls active in nonoverhead sports participated in this study. MAIN OUTCOME MEASURES: Passive external rotator (ER), internal rotator (IR), and total range of motion (TROM) of the dominant and nondominant arm were examined with a goniometer...
April 27, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28435335/what-is-the-effect-of-a-shoulder-strengthening-program-to-prevent-shoulder-pain-among-junior-female-team-handball-players
#17
Maria Sommervold, Håvard Østerås
BACKGROUND: Excessively high stresses are applied to the shoulder joint of handball players, mainly caused by overhead throwing. Shoulder pain is a significant problem among junior female team handball players and both male and female top-level team handball players in Norway. METHOD: A randomized selection was performed among the best female junior teams (J 16) in the Trøndelag region of Norway in the 2014-2015 season. Three teams were randomized to the intervention group and three teams to the control group...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28409511/multimodal-assessment-of-sensorimotor-shoulder-function-in-patients-with-untreated-anterior-shoulder-instability-and-asymptomatic-handball-players
#18
Guillaume Mornieux, Anja Hirschmüller, Albert Gollhofer, Norbert P Südkamp, Dirk Maier
BACKGROUND: Functional evaluation of sensorimotor function of the shoulder joint is important for guidance of sports-specific training, prevention and rehabilitation of shoulder instability. Such assessment should be multimodal and comprise all qualities of sensorimotor shoulder function. This study evaluates feasibility of such multimodal assessment of glenohumeral sensorimotor function in patients with shoulder instability and handball players. METHODS: Nine patients with untreated anterior instability of their dominant shoulder and 15 asymptomatic recreational handball players performed proprioceptive joint position sense and dynamic stabilisation evaluations on an isokinetic device, as well as a functional throwing performance task...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28394832/strength-and-conditioning-training-by-the-danish-national-handball-team-prior-to-an-olympic-tournament
#19
Thue Kvorning, Mikkel R B Hansen, Kurt Jensen
The physical demands imposed on national team handball teams during the Olympics imply significant physical preparation in order to improve performance and reduce incidence of injuries. The purpose of the present case report is to describe and analyze the strength and conditioning (S&C) training carried out by the Danish national handball team before the Beijing Olympic Games. Eight weeks of S&C was divided into blocks of 5 weeks emphasizing muscle hypertrophy and long interval running followed by 3 weeks emphasizing strength, power and short interval running...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28376278/dental-trauma-prevention-with-mouthguard-in-a-nose-fracturing-blow-to-the-face-case-report-and-literature-review
#20
Ivan Onone Gialain, Solange Kobayashi-Velasco, Celso Luiz Caldeira, Marcelo Gusmão Paraíso Cavalcanti
Orofacial injuries are common in sports activities and may vary in complexity and the tissues involved. Most sports-related trauma occurs when a player hits another player, an object or the ground. This report presents a case of an injury caused by a punch-like blow to the face during a handball college team practice session. The patient suffered a traumatic blow to the left side of the nose and mouth and promptly attended a dentist. After a clinical examination and a CBCT scan, the following injuries were diagnosed: upper lip laceration, upper left lateral incisor subluxation and anterior nasal spine fracture...
April 4, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
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