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Elite players

Christian Møller Madsen, Benjamin Badault, Lars Nybo
Badminton-specific speed and endurance performance was evaluated in both cross-sectional and longitudinal studies of elite youth players and compared to the physiological capacities of world top-50 singles players.The cross-sectional study involved ten males in the category U15 (<15 years), ten U17, nine U19 and four senior elite players. They performed 30-m sprint, counter-movement jump (CMJ) and badminton-specific speed (B-SPEED) and endurance (B-ENDURANCE) tests. The longitudinal data were collected for ten U15 players with 1- and 2-year follow-up measures...
March 13, 2018: Journal of Strength and Conditioning Research
Esther Morencos, Blanca Romero-Moraleda, Carlo Castagna, David Casamichana
PURPOSE: The aim of this study was to examine the influence of match period on the movement patterns of hockey players according to their playing position under the introduction of quarters. METHODS: Sixteen sub-elite level Spanish National League male hockey players participated in the study (age: 25.5 ± 2.9 years; body mass: 74.6 ± 5.5 kg). Global Positioning Systems (GPS) devices were used to monitor players running performance during 17 competitive matches (113 match-play profiles)...
March 15, 2018: International Journal of Sports Physiology and Performance
Marcus J Colby, Brian Dawson, Peter Peeling, Jarryd Heasman, Brent Rogalski, Michael K Drew, Jordan Stares
OBJECTIVES: To assess the effect of multiple high risk scenario (HRS) exposures on non-contact injury prediction in elite Australian footballers. DESIGN: Retrospective cohort study. METHODS: Sessional workload data (session-rating of perceived exertion; GPS-derived distance, sprint distance, maximum velocity) from one club (n= 60 players) over 3 seasons were collated; several established HRS were also defined. Accumulated HRS sessional exposures were calculated retrospectively (previous 1-8 weeks)...
March 15, 2018: International Journal of Sports Physiology and Performance
Shannon O'Donnell, Christopher M Beaven, Matthew Driller
PURPOSE: To assess the effect of match-day napping and duration of naps on perceptual and performance indices in elite female netball players over two consecutive netball seasons. METHODS: Fourteen elite female netball athletes (mean ± SD; age = 23 ± 6 yr) participated in an observational study over 26 competition matches. On each match day, athletes provided information on their napping habits, perceived energy levels, and then performed 3 countermovement jumps (CMJ) 3h30 prior to the start of the match...
March 15, 2018: International Journal of Sports Physiology and Performance
Justin W Y Lee, Cheng Li, Patrick S H Yung, Kai-Ming Chan
Background/Objective: Evaluating hamstring strength by isokinetic dynamometry is limited by various practical issues such as time and cost. A video-based Nordic hamstring exercise is introduced as an alternative option. The aims of this study are to evaluate 1.) the between-session reliability and 2.) concurrent validity of the testing method compared to a standardized isokinetic dynamometry. Methods: Thirty male elite footballers were recruited for the study. From the Nordic hamstring exercise, the video-analysis-determined Nordic break-point angles where the participant could no longer withstand the force of the fall (eccentric mode) and the number of seconds that the player could hold at 30° forward flexion angle (isometric mode) were measured...
June 2017: Journal of Exercise Science and Fitness
Jason McGahan, Con Burns, Seán Lacey, Tim Gabbett, Cian O' Neill
PURPOSE: This study investigated the positional running demands of elite Gaelic football players during match-play and compared these demands with typical training activities used to prepare players for competition. METHODS: Global positioning system (GPS) data was obtained from thirty elite Gaelic football players (26.9 ± 3.5 years, 182.8 ± 6.1 cm, 84.6 ± 8.1 kg) across a full season (13 competitive games and 78 training sessions). Only players who completed the full match and respective training sessions were included (n = 107 match files and n = 1,603 training files)...
March 12, 2018: Journal of Strength and Conditioning Research
Timothy J H Lathlean, Paul B Gastin, Stuart Newstead, Caroline F Finch
Well-developed physical qualities such as high jumping ability, running endurance, acceleration and speed can help aspiring junior elite Australian football (AF) players transition to the Australian Football League competition. In order to do so, players need to experience sufficient load in order to enhance their physical resilience without increasing their risk of negative outcomes in terms of impaired wellness or injury. The aim of this study was to investigate the differences in load for different levels of competition and training modes across one competitive season...
March 6, 2018: Journal of Strength and Conditioning Research
A Delextrat, M Gruet, F Bieuzen
The aim of the current study was to compare the effects of 6 weeks of small-sided game (SSG) and high-intensity interval training (HIIT) on aerobic fitness and muscle oxygenation during a repeated sprint (RS) sequence in elite male junior basketball players. Twenty participants (14.3 ± 0.5 years; 176.8 ± 12.5 cm; 74.5 ± 9.8 kg) performed pre- and post-tests interspersed by 6-weeks of SSG or HIIT training. Testing sessions consisted of the 30-15 Intermittent Fitness Test and a RS sequence (two bouts of 15-s)...
March 6, 2018: Journal of Strength and Conditioning Research
Steven H Doeven, Michel S Brink, Silke J Kosse, Koen A P M Lemmink
Background: Insufficient postmatch recovery in elite players may cause an increased risk of injuries, illnesses and non-functional over-reaching. Objective: To evaluate postmatch recovery time courses of physical performance and biochemical markers in team ball sport players. Study design: Systematic review. Data sources: PubMed and Web of Science. Eligibility criteria for selecting studies: This systematic review was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines...
2018: BMJ Open Sport & Exercise Medicine
Martin K Erikstad, Rune Høigaard, Bjørn Tore Johansen, Ngianga-Bakwin Kandala, Tommy Haugen
Childhood sport participation is argued to be important to understand differences in self-regulation and performance level in adolescence. This study sought to investigate if football-specific activities in childhood (6-12 years of age) is related to self-regulatory skills and national under 14- and 15-team selection in Norwegian elite youth football. Data of practice histories and self-regulatory skills of 515 youth football players selected at Norwegian regional level were collected and further analysed using multilevel analyses...
March 9, 2018: Journal of Sports Sciences
Mark Roe, Shane Malone, Eamonn Delahunt, Kieran Collins, Conor Gissane, Ulrik McCarthy Persson, John C Murphy, Catherine Blake
OBJECTIVE: Report eccentric knee flexor strength values of elite Gaelic football players from underage to adult level whilst examining the influence of body mass and previous hamstring injury. DESIGN: Cross-sectional study. SETTING: Team's training facility. PARTICIPANTS: Elite Gaelic football players (n = 341) from under 14 years to senior age-grades were recruited from twelve teams. MAIN OUTCOME MEASURES: Absolute (N) and relative (N·kg-1 ) eccentric hamstring strength as well as corresponding between-limb imbalances (%) were calculated for all players...
March 1, 2018: Physical Therapy in Sport
Christopher S Ahmad
The optimal treatment of shoulder SLAP tears in high-level baseball players remains highly controversial. In pitchers, many SLAP lesions are found incidentally on magnetic resonance imaging and may in fact be adaptive to the baseball pitcher's mechanics of throwing. Surgical repair of SLAP lesions requires lengthy rehabilitation, and outcomes have been similar to or worse than the results after nonoperative treatment. The treatment option of biceps tenodesis is an appealing alternative to SLAP repair, but the indications and technique of biceps tenodesis in the elite pitcher still need to be defined...
March 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
Liam A Toohey, Michael K Drew, Lauren V Fortington, Caroline F Finch, Jill L Cook
BACKGROUND: Accounting for subsequent injuries is critical for sports injury epidemiology. The subsequent injury categorisation (SIC-1.0) model was developed to create a framework for accurate categorisation of subsequent injuries but its operationalisation has been challenging. OBJECTIVES: The objective of this study was to update the subsequent injury categorisation (SIC-1.0 to SIC-2.0) model to improve its utility and application to sports injury datasets, and to test its applicability to a sports injury dataset...
March 3, 2018: Sports Medicine
Gabriele Mascherini, Cristian Petri, Giorgio Galanti
BACKGROUND: Cardiac adaptation to intense physical training is determined by many factors. Differences between the sexes in the left ventricle parameters are well established, however, both sport activity and body composition seem to reduce them. In order to better explain some heart modifications, a first approach was to eliminate the fat mass from the indexing of the left ventricular parameters. Fat free mass also contains the extracellular mass which does not represent a metabolically active compartment...
March 1, 2018: Journal of Sports Medicine and Physical Fitness
Sven Blomqvist, Per-Erik Ervasti, Guilherme Elcadi
To improve current understandings of physical Workload (WL) in elite Bandy, ten bandy players were monitored for heart rate (HR) during thirteen matches over one championship season. Participants were divided into five subgroups according to playing position - libero, defender, halves, midfielder and forward. HR measurements were analyzed with two different methods to compute physical WL - (i) percentage of total time spent in different HR zones (HRres) and (ii) WL based on the Edwards method. Also determined was the time spent at HR levels above the lactate threshold (LT)...
February 27, 2018: Journal of Strength and Conditioning Research
Chris Bishop, Paul Read, Jermaine McCubbine, Anthony Turner
Inter-limb asymmetries have been shown to be greater during vertical jumping compared to horizontal jumping. Notable inter-limb differences have also been established at an early age in male youth soccer players. Furthermore, given the multi-planar nature of soccer, establishing between-limb differences from multiple jump tests is warranted. At present, a paucity of data exists regarding asymmetries in youth female soccer players and their effects on physical performance. The aims of this study were to quantify inter-limb asymmetries from unilateral jump tests and examine their effects on speed and jump performance...
February 27, 2018: Journal of Strength and Conditioning Research
Damien Young, Laurent Mourot, Marco Beato, Giuseppe Coratella
The aims of the current study were to examine the physical and physiological demands of elite under-21 male hurling match-play across halves of play and between positions. Global positioning systems (10-Hz) and heart rate (HR) monitors were used to collect data from 95 players during 10 games. Total distance (TD), relative speed, high-speed running (HSR), sprint distance, total sprints and mean length of sprint was 6688 ± 942 m, 112 ± 16 m·min, 661 ± 203 m, 274 ± 111 m, 18 ± 8 and 16 ± 5 m respectively...
February 27, 2018: Journal of Strength and Conditioning Research
Renan F H Nunes, Rodolfo A Dellagrana, Fábio Y Nakamura, Cosme F Buzzachera, Flavia A M Almeida, Lucinar J F Flores, Luiz G A Guglielmo, Sérgio G da Silva
Purpose/Background: Strength asymmetries are related to knee injuries in intermittent sports players. The purpose of this study was to examine whether elite futsal players demonstrate strength asymmetries during knee isokinetic testing applying the Croisier et al.21 criteria. Methods: Forty male elite (27.9 ± 6.5 years) Brazilian futsal players participated in the study. The testing protocol required players to perform concentric contractions of both quadriceps and hamstring muscles at angular velocities of 60 °·s-1 and 240 °·s-1 and eccentric contractions of hamstring at 30 °·s-1 and 120 °·s-1 ...
February 2018: International Journal of Sports Physical Therapy
V Moreno-Pérez, Jll Elvira, J Fernandez-Fernandez, F J Vera-Garcia
Background: Glenohumeral internal rotation deficit and external rotation strength have been associated with the development of shoulder pain in overhead athletes. Objective: To examine the bilateral passive shoulder rotational range of motion (ROM), the isometric rotational strength and unilateral serve speed in elite tennis players with and without shoulder pain history (PH and NPH, respectively) and compare between dominant and non-dominant limbs and between groups...
February 2018: International Journal of Sports Physical Therapy
Walter Hemelryck, Josselin Calistri, Virginie Papadopoulou, Sigrid Theunissen, Christian Dugardeyn, Costantino Balestra
Background: World Rugby Union laws are constantly evolving towards stringent injury-prevention, particularly for contested scrums, since front row players are most at risk of cervical spine injuries. Recently, some countries have also introduced tailored training programs and minimum performance requirements for playing in the front row. Nevertheless, these approaches lack an objective assessment of each cervical muscle that would provide protective support. Objective: Since front row players are the most at risk for cervical spine injuries due to the specific type of contact during scrums, the purpose of this study was to ascertain whether significant differences exist in neck muscle size and range of motion between front row players and players of other positions, across playing categories...
February 2018: International Journal of Sports Physical Therapy
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