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Repeated sprint ability

Naser Naser, Ajmol Ali, Paul Macadam
Futsal, the 5-a-side version of soccer (i.e. 1 goalkeeper and 4 outfield players), was introduced in 1930 and continues to grow in popularity around the world. Competitive games comprise of two 20-min periods of high-intensity and intermittent activities requiring substantial physical, tactical, and technical efforts from the players. A greater understanding of the physical and skill requirements will aid the development of futsal and enable practitioners to undertake appropriate training regimes for the demands of the sport...
December 2017: Journal of Exercise Science and Fitness
Estibaliz Romaratezabala, Fabio Nakamura, Rodrigo Ramirez-Campillo, Daniel Castillo, Josune Rodríguez-Negro, Javier Yanci
The aim of this study was to compare physical performance in amateur handball players of two different competitive levels. Thirty-four senior handball players were divided into two groups according to their competitive level (regional category: REG or national category: NAC). Although no significant differences were found between groups in any of the horizontal (HJ) or vertical jump (VJ) variables (p>0.05), NAC players obtained a better performance in the repeated sprint ability (RSA) test (RSABest [the best attempt] and RSATT [the total time in the total of sprints] in 15 m and 30 m), in change of direction ability (CODA) and in the Yo-Yo Intermittent Recovery test Level 1 (YYIR1) test (p<0...
February 27, 2018: Journal of Strength and Conditioning Research
Emmanuel Bonney, Eugene Rameckers, Gillian Ferguson, Bouwien Smits-Engelsman
BACKGROUND: Adolescents with low motor competence participate less in physical activity and tend to exhibit decreased physical fitness compared to their peers with high motor competence. It is therefore essential to identify new methods of enhancing physical fitness in this population. Active video games (AVG) have been shown to improve motor performance, yet investigations of its impact on physical fitness are limited. The objective of this study was to examine the impact of the graded Wii protocol in adolescent girls with probable Developmental Coordination Disorder (p-DCD)...
February 22, 2018: BMC Pediatrics
Athanasios Chatzinikolaou, Konstantinos Michaloglou, Alexandra Avloniti, Diamanda Leontsini, Chariklia K Deli, Dimitris Vlachopoulos, Luis Gracia-Marco, Sotirios Arsenis, Ioannis Athanailidis, Dimitrios Draganidis, Athanasios Z Jamurtas, Craig A Williams, Ioannis G Fatouros
PURPOSE: Τo investigate the effect of a complex, short-term strength/power training protocol on performance and body composition of elite early-adolescent soccer players. METHODS: Twenty-two players (14-15 years) were randomly assigned to (a) an experimental (EG, n=12, participated in a 5-week training protocol with traditional multi-joint power resistance exercises, Olympic-style lifts, plyometric drills and speed work, four times/week) or (b) a control group (CG, n=10)...
February 12, 2018: International Journal of Sports Physiology and Performance
Charly Fornasier-Santos, Grégoire P Millet, Xavier Woorons
PURPOSE: The goal of this study was to determine the effects of repeated-sprint training in hypoxia induced by voluntary hypoventilation at low lung volume (VHL) on running repeated-sprint ability (RSA) in team-sport players. METHODS: Twenty-one highly trained rugby players performed, over a 4-week period, seven sessions of repeated 40-m sprints either with VHL (RSH-VHL, n = 11) or with normal breathing (RSN, n = 10). Before (Pre-) and after training (Post-), performance was assessed with an RSA test (40-m all-out sprints with a departure every 30 s) until task failure (85% of the reference velocity assessed in an isolated sprint)...
February 5, 2018: European Journal of Sport Science
Danielle E Levitt, Nosakhare O Idemudia, Carianne M Cregar, Anthony A Duplanty, David W Hill, Jakob L Vingren
The purpose of this study was to investigate the effect of alcohol consumed after heavy eccentric resistance exercise on measures of muscle power. After familiarization and an initial eccentric exercise bout to control for the "repeated-bout effect," ten recreationally resistance-trained men completed two identical heavy eccentric squat bouts (4 sets of 10 repetitions at 110% of concentric 1-repetition maximum) one week apart. Each exercise bout was followed by ingestion of a beverage containing either alcohol (1...
January 29, 2018: Journal of Strength and Conditioning Research
Walid Selmi, Haithem Rebai, Mokhtar Chtara, Abdelmajid Naceur, Sonia Sahli
The study aimed to investigate the effects of repeated sprint (RS) training on somatic anxiety (SA), cognitive anxiety (CA), self-confidence (SC), rating of perceived exertion (RPE) and repeated sprint ability (RSA) indicators in elite young soccer players. Thirty elite soccer players in the first football league (age: 17.8±0.9years) volunteered to participate in this study. They were randomly assigned to one of two groups: a repeated sprint training group (RST-G; n=15) and a control group (CON-G; n=15). RST-G participated in 6weeks of intensive training based on RS (6×(20+20m) runs, with 20s passive recovery interval between sprints, 3 times/week)...
January 25, 2018: Physiology & Behavior
Niyazi Eniseler, Çağatay Şahan, Ilker Özcan, Kıvanç Dinler
The aim of this study was to compare the effects of high-intensity small-sided games training (SSGT) versus repeated-sprint training (RST) on repeated-sprint ability (RSA), soccer specific endurance performance and short passing ability among junior soccer players. The junior soccer players were recruited from of a professional team (age 16.9 ± 1.1 years). The tests included the repeated-shuttle-sprint ability test (RSSAT), Yo-Yo Intermittent Recovery Test level 1 (Yo-Yo IR1) and Loughborough Soccer Passing Test (LSPT)...
December 2017: Journal of Human Kinetics
Roland van den Tillaar
The aim of this study was to compare kinematics in repeated 30m sprints in female soccer players. Seventeen subjects performed seven 30m sprints every 30s in one session. Kinematics were measured with an infrared contact mat and laser gun, and running times with an electronic timing device. The main findings were that sprint times increased in the repeated sprint ability test. The main changes in kinematics during the repeated sprint ability test were increased contact time and decreased step frequency, while no change in step length was observed...
January 4, 2018: Journal of Strength and Conditioning Research
Michael Phomsoupha, Guillaume Laffaye
The goal of this study was: (i) to assess general and specific lower and upper limb force, shuttlecock velocity, displacement ability and the anthropometric characteristics of badminton players at five skill levels, and (ii) to predict individual players' number of points. We divided 83 participants into groups of novice (n=15), intermediate (n=16), skilled (n=23), highly skilled (n=14) and elite (n=15) players. The number of points scored for each player performing tournaments (excluding novices) during the entire season was used as a continuous and dependent variable after logarithmic transformation for correlational study...
December 11, 2017: Journal of Strength and Conditioning Research
Bahri Gjinovci, Kemal Idrizovic, Ognjen Uljevic, Damir Sekulic
There is an evident lack of studies on the effectiveness of plyometric- and skill-based-conditioning in volleyball. This study aimed to evaluate effects of 12-week plyometric- and volleyball-skill-based training on specific conditioning abilities in female volleyball players. The sample included 41 high-level female volleyball players (21.8 ± 2.1 years of age; 1.76 ± 0.06 cm; 60.8 ± 7.0 kg), who participated in plyometric- (n = 21), or skill-based-conditioning-program (n = 20). Both programs were performed twice per week...
December 2017: Journal of Sports Science & Medicine
Vincent Gosselin Boucher, Andrée-Anne Parent, Fanie St-Jean Miron, Mario Leone, Alain Steve Comtois
The importance of specific testing has been shown in ice hockey performance and the understanding and connection between them may lead to adapting training and follow up in elite athletes. The aim of the present study was to compare two off-ice power tests with performances on ice with a complete professional hockey team. The broad jump test and the vertical jump test were used for the off-ice evaluations, while the SAS-40 and the repeated skate sprint modify (RSSm) tests were used as the performance variables...
November 27, 2017: Journal of Strength and Conditioning Research
Dennis Murr, Johannes Raabe, Oliver Höner
Talent identification and selection in soccer is typically based on subjective evaluations of experienced coaches. Recently, there has been a trend to complement these subjective assessments with objective tests. However, there is currently no comprehensive overview of the prognostic relevance of objective measurements in youth soccer. Therefore, the primary purpose of the current study was to systematically review published empirical studies related to the prognostic relevance of physiological (e.g. endurance and speed) and physical characteristics (i...
November 21, 2017: European Journal of Sport Science
Ian N Bezodis, David G Kerwin, Stephen-Mark Cooper, Aki I T Salo
PURPOSE: To understand how training periodization influences sprint performance and key step characteristics over an extended training period in an elite sprint training group. METHODS: Four sprinters were studied during five months of training. Step velocities, step lengths and step frequencies were measured from video of the maximum velocity phase of training sprints. Bootstrapped mean values were calculated for each athlete for each session and 139 within-athlete, between-session comparisons were made with a repeated measures ANOVA...
November 15, 2017: International Journal of Sports Physiology and Performance
Krista Kraskura, Jay A Nelson
Annual hypoxia in the Chesapeake Bay has expanded to the point where Darwinian fitness of juvenile striped bass (Morone saxatilis) may depend on their ability to perform in low-oxygen environments. The locomotion they use in predator/prey dynamics relies primarily on white (type II) muscle that is powered by anaerobic metabolic pathways and has generally been thought to be immune to aquatic hypoxia. We tested the sprint performance of 15 juvenile striped bass twice under acute hypoxia (20% air saturation [AS]) 5 wk apart and once under normoxia (>85% AS) in between...
January 2018: Physiological and Biochemical Zoology: PBZ
Cameron Lord, Fadi Ma'ayah, Anthony J Blazevich
PURPOSE: Muscular fatigue and inter-limb strength asymmetry are factors known to influence hamstring injury risk, however limb-specific exacerbation of knee flexor (hamstrings) torque production after fatiguing exercise has previously been ignored. To investigate changes in muscular force production before and after sport-specific (repeated-sprint) and non-specific (knee extension-flexion) fatiguing exercise, and explore the sensitivity and specificity of isokinetic endurance (i.e. muscle-specific) and single-leg vertical jump (i...
November 8, 2017: Scandinavian Journal of Medicine & Science in Sports
Michael Phomsoupha, Quentin Berger, Guillaume Laffaye
The purpose of the present study was: i) to develop a new sport-specific, repeated sprint ability test involving four changes of direction, namely, the multiple repeated sprint ability (MRSAB) test for badminton players; ii) to determine its validity by comparing the results of five different skill levels; and iii) to assess the link between the new test and neuromuscular lower limb and physiological variables. For this purpose, 42 participants were separated into five groups in order to perform the MRSAB test at the same time of day, on two occasions, separated by at least 48 hours...
October 27, 2017: Journal of Strength and Conditioning Research
Amri Hammami, Tim J Gabbett, Maamer Slimani, Ezdine Bouhlel
INTRODUCTION: This paper aimed to systematically review and meta-analyse the training effects of small-sided games (SSG) on physical fitness and specific skills related to team sport according to the level of play and the period of the season. EVIDENCE ACQUISITION: The search covered the following electronic databases (PubMed, Google Scholar, and ScienceDirect). The publications' search period ranged from 2000 to 2016. The terms (small- sided game, training, skill-based game, aerobic fitness, sprint, agility, jump and team sports) were used either singularly or combined in a systematic sequence...
October 24, 2017: Journal of Sports Medicine and Physical Fitness
Robert G Lockie, Matthew R Moreno, Ashley J Orjalo, Alyssa A Stage, Tricia M Liu, Samantha A Birmingham-Babauta, Jillian M Hurley, Ibett A Torne, Megan D Beiley, Fabrice G Risso, DeShaun L Davis, Adrina Lazar, John J Stokes, Dominic V Giuliano
Repeated-sprint ability (RSA) in essential for soccer. Important considerations when assessing RSA is whether there are differences between positions (defenders, midfielders, forwards), and what physiological characteristics may contribute to RSA. This has not been assessed in collegiate male players. Eighteen Division I male field players from one school performed several performance tests. The RSA test involved 7 x 30-m sprints completed on 20-s cycles. Measurements included total time (TT), and performance decrement (percent change in time from the first to last sprint; PD)...
October 16, 2017: Journal of Strength and Conditioning Research
Sanjay Basu, Jeremy B Sussman, Joseph Rigdon, Lauren Steimle, Brian T Denton, Rodney A Hayward
BACKGROUND: Intensive blood pressure (BP) treatment can avert cardiovascular disease (CVD) events but can cause some serious adverse events. We sought to develop and validate risk models for predicting absolute risk difference (increased risk or decreased risk) for CVD events and serious adverse events from intensive BP therapy. A secondary aim was to test if the statistical method of elastic net regularization would improve the estimation of risk models for predicting absolute risk difference, as compared to a traditional backwards variable selection approach...
October 2017: PLoS Medicine
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