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https://www.readbyqxmd.com/read/28229575/effects-of-a-low-volume-plyometric-training-in-anaerobic-performance-of-adolescent-athletes
#1
Ari R Assunção, Martim Bottaro, Euler A Cardoso, Daiane P Dantas da Silva, Marcelo Ferraz, Carlos A Vieira, Paulo Gentil
BACKGROUND: Parameters related to the anaerobic capacity and power may be important for the performance of many sports whose skills are related to high-intensity and short- duration efforts. Although plyometric training (PT) has been widely used in the regular strength and conditioning programs of young athletes, its effects on anaerobic performance are still controversial. Therefore, the purpose of the present study was to evaluate the effects of PT in anaerobic performance in young athletes...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28229568/yo-yo-ir1-vs-incremental-continuous-running-test-for-prediction-of-3000-m-performance
#2
Boris Schmitz, Andreas Klose, Katrin Schelleckes, Charlotte M Jekat, Michael Krüger, Stefan-Martin Brand
BACKGROUND: This study aimed to compare physiological responses during the Yo-Yo intermittent recovery level 1 (Yo-Yo IR1) test and an incremental continuous running field test (ICRT) and to analyze their predictive value on 3000 m running performance. METHODS: Forty moderately trained individuals (18 females) performed the ICRT and Yo-Yo IR1 test to exhaustion. The ICRT was performed as graded running test with an increase of 2.0 km·h-1 after each 3 min interval for lactate diagnostic...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28225523/the-age-related-performance-decline-in-ironman-triathlon-starts-earlier-in-swimming-than-in-cycling-and-running
#3
Ilja Käch, Christoph A Rüst, Pantelis T Nikolaidis, Thomas Rosemann, Beat Knechtle
In Ironman triathlon, the number of overall male and female finishers increased in the last 30 years, while an improvement in performance has been reported. Studies concluding these numbers only analysed the top ten athletes per age group instead of all finishers, therefore a selection bias might have occurred. The aim of the present study was to investigate participation, performance and the age-related performance decline of all pro and age group triathletes ranked in all Ironman triathlons held worldwide between 2002 and 2015...
February 21, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28214098/is-perceived-athlete-leadership-quality-related-to-team-effectiveness-a-comparison-of-three-professional-sports-teams
#4
Katrien Fransen, S Alexander Haslam, Clifford J Mallett, Niklas K Steffens, Kim Peters, Filip Boen
OBJECTIVES: Researchers have argued that leadership is one of the most important determinants of team effectiveness. The present study examined the extent to which the perceived quality of athlete leadership was related to the effectiveness of elite sports teams. DESIGN: Three professional football teams (N=135) participated in our study during the preparation phase for the Australian 2016 season. METHODS: Players and coaching staff were asked to assess players' leadership quality in four leadership roles (as task, motivational, social, and external leader) via an online survey...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28213754/low-energy-availability-menstrual-dysfunction-and-low-bone-mineral-density-in-individuals-with-a-disability-implications-for-the-para-athlete-population
#5
REVIEW
Cheri A Blauwet, Emily M Brook, Adam S Tenforde, Elizabeth Broad, Caroline H Hu, Eliza Abdu-Glass, Elizabeth G Matzkin
Low energy availability, functional hypothalamic amenorrhea, and low bone mineral density are three interrelated conditions described in athletic women. Although described as the female athlete triad (Triad), males experience similar health concerns. The literature suggests that individuals with a disability may experience altered physiology related to these three conditions when compared with the able-bodied population. The goal of this review is to describe the unique implications of low energy availability, low bone mineral density, and, in females, menstrual dysfunction in individuals with a disability and their potential impact on the para athlete population...
February 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28203217/a-comparison-of-players-and-coaches-perceptions-of-the-coach-created-motivational-climate-within-youth-soccer-teams
#6
Nina Elise Møllerløkken, Håvard Lorås, Arve Vorland Pedersen
The coach-created motivational climate within youth sports teams has been shown to be of great importance for the quality of youths' sports experiences as well as their motivation for continuing or discontinuing sport participation. While the player's perspective on motivational climates has been studied extensively, the coach's perspective has received considerably less attention. Thus, little is known about the concordance of perceptions of the motivational climate between coaches and their players, or the lack thereof...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28195977/fat-grip-resistance-training-improves-driving-performance-in-division-i-male-golfers
#7
Patrick M Cummings, Hunter S Waldman, Ben M Krings, JohnEric W Smith, Matthew J McAllister
Fat Grip (FG) training is implemented into strength and conditioning programs with the overall goal of increasing grip strength. Previous research assessing the effect of training with increased grip diameters compared to standard Olympic bar diameters has mainly been in acute settings. Therefore, the purpose of this study was to examine to effects FG training compared to normal diameter grip (CON) training during an eight week periodized resistance training (RT) program in Division I male golfers. Subjects (n = 10) were randomly assigned into two groups: the FG group (n = 5, scoring average: 75...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28177751/evidence-of-nonlocal-muscle-fatigue-in-male-youth
#8
Aymen Ben Othman, Anis Chaouachi, Mehdi M Chaouachi, Raouf Hammami, Sofien Kasmi, David G Behm
Evidence for nonlocal muscle fatigue (NLMF) has been inconsistent in adults, with no studies investigating youth. The objective was to examine NLMF in youth. Forty-two young males (age, 10-13 years) were tested for maximal voluntary isometric contraction (MVIC) force of the ipsilateral and contralateral knee extensors at 90° and 120° knee flexion, elbow flexors at 90°, handgrip, knee extensor isokinetic torque (300(o)·s(-1) analyzed at 90(o) and 120(o) knee flexion), as well as a unilateral countermovement jump (CMJ) and Y Balance test (YBT)...
November 2, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177711/the-influence-of-genetic-polymorphisms-on-performance-cardiac-and-hemodynamic-parameters-among-brazilian-soccer-players
#9
Thiago José Dionísio, Carlos Rogério Thiengo, Daniel Thomas Brozoski, Evandro José Dionísio, Guilherme Augusto Talamoni, Roberto Braga Silva, Gustavo Pompermaier Garlet, Carlos Ferreira Santos, Sandra Lia Amaral
This study investigated whether ACTN3 R577X, AMPD1 C34T, I/D ACE and M235T AGT polymorphisms can affect performance tests such as jumping, sprinting and endurance in 220 young male athletes from professional minor league soccer team from São Paulo Futebol Clube, Brazil. I/D ACE and M235T AGT polymorphisms were also analyzed according to cardiac and hemodynamic parameters. Athletes were grouped or not by age. DNA from saliva and Taqman® assays were used for genotyping 220 athletes and the results were associated with performance tests...
January 24, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28163571/prevalence-patterns-and-correlates-of-equestrian-injuries-in-malaysia-a-cross-sectional-study
#10
Nizar A Majeedkutty, Nor A B Khairulanuar
BACKGROUND: Equestrian sport carries with it an implicit risk of injury. Despite the frequency of injuries in equestrian sports, there is no published study on injuries of equestrian athletes in Malaysia. OBJECTIVE: The objective of this study was to determine the prevalence of injuries and its correlates among horseback riders. SUBJECTS AND METHODS: A web-based standardized questionnaire was used to collect data for this cross-sectional survey...
January 2017: Journal of Family & Community Medicine
https://www.readbyqxmd.com/read/28151781/acute-effects-of-eccentric-overload-on-concentric-front-squat-performance
#11
Cameron N Munger, David C Archer, Whitney D Leyva, Megan A Wong, Jared W Coburn, Pablo B Costa, Lee E Brown
Eccentric overload is used to enhance performance. The purpose of this study was to investigate the acute effects of eccentric overload on concentric front squat performance. Twenty resistance-trained males (age=23.80±1.82yrs, ht=176.95±5.21cm, mass=83.49±10.43kg, 1 Repetition Maximum [1RM] front squat=131.02±21.32kg) volunteered. A dynamic warm-up and warm-up sets of front squat were performed. Eccentric hooks were added to the barbell. They descended for 3 seconds, until eccentric hooks released, and performed the concentric phase as fast as possible...
January 30, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28150178/the-effect-of-concurrent-plyometric-training-versus-submaximal-aerobic-cycling-on-rowing-economy-peak-power-and-performance-in-male-high-school-rowers
#12
Julian D Egan-Shuttler, Rohan Edmonds, Cassandra Eddy, Veronica O'Neill, Stephen J Ives
BACKGROUND: Plyometric training has been shown to increase muscle power, running economy, and performance in athletes. Despite its use by rowing coaches, it is unknown whether plyometrics might improve rowing economy or performance. The purpose was to determine if plyometric training, in conjunction with training on the water, would lead to improved rowing economy and performance. METHODS: Eighteen male high school rowers were assigned to perform 4 weeks of either plyometric training (PLYO, n = 9) or steady-state cycling below ventilatory threshold (endurance, E, n = 9), for 30 min prior to practice on the water (matched for training volume) 3 days per week...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28150163/fatigue-and-recovery-in-rugby-a-review
#13
REVIEW
Francisco Tavares, Tiaki Brett Smith, Matthew Driller
The physical demands and combative nature of rugby lead to notable levels of muscle damage. In professional rugby, athletes only have a limited timeframe to recover following training sessions and competition. Through the implementation of recovery strategies, sport scientists, practitioners and coaches have sought to reduce the effect of fatigue and allow athletes to recover faster. Although some studies demonstrate that recovery strategies are extensively used by rugby athletes, the research remains equivocal concerning the efficacy of recovery strategies in rugby...
February 2, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28149376/a-new-physical-performance-classification-system-for-elite-handball-players-cluster-analysis
#14
Iker J Bautista, Ignacio J Chirosa, Joseph E Robinson, Roland van der Tillaar, Luis J Chirosa, Isidoro Martínez Martín
The aim of the present study was to identify different cluster groups of handball players according to their physical performance level assessed in a series of physical assessments, which could then be used to design a training program based on individual strengths and weaknesses, and to determine which of these variables best identified elite performance in a group of under-19 [U19] national level handball players. Players of the U19 National Handball team (n=16) performed a set of tests to determine: 10 m (ST10) and 20 m (ST20) sprint time, ball release velocity (BRv), countermovement jump (CMJ) height and squat jump (SJ) height...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28139033/performance-trends-in-age-group-runners-from-100%C3%A2-m-to-marathon-the-world-championships-from-1975-to-2015
#15
P T Nikolaidis, M A Zingg, B Knechtle
This study examined changes in performance in age-group track runners across years from 1975 to 2015 for 100, 200, 400, 800, 1500, 5000, 10 000 m, and marathon and the corresponding sex differences. Athletes were ranked in 5-year age-group intervals from 35-39 to 95-99 years. For all races and all years, the eight female and male finalists for each age-group were included. Men were faster than women and this observation was more pronounced in the shorter distances. The younger age-groups were faster than the older age-groups and age exerted the largest effect on speed in 800 m and the smallest in marathon...
January 30, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28129370/career-performance-trajectories-in-track-and-field-jumping-events-from-youth-to-senior-success-the-importance-of-learning-and-development
#16
Gennaro Boccia, Paolo Moisè, Alberto Franceschi, Francesco Trova, Davide Panero, Antonio La Torre, Alberto Rainoldi, Federico Schena, Marco Cardinale
INTRODUCTION: The idea that early sport success can be detrimental for long-term sport performance is still under debate. Therefore, the aims of this study were to examine the career trajectories of Italian high and long jumpers to provide a better understanding of performance development in jumping events. METHODS: The official long-jump and high-jump rankings of the Italian Track and Field Federation were collected from the age of 12 to career termination, for both genders from the year 1994 to 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28129282/age-related-variation-in-male-youth-athletes-countermovement-jump-after-plyometric-training-a-meta-analysis-of-controlled-trials
#17
Jason J Moran, Gavin R H Sandercock, Rodrigo Ramírez-Campillo, César M P Meylan, Jay A Collison, Dave A Parry
Moran, J, Sandercock, GRH, Ramírez-Campillo, R, Meylan, CMP, Collison, J, and Parry, DA. Age-related variation in male youth athletes' countermovement jump after plyometric training: A meta-analysis of controlled trials. J Strength Cond Res 31(2): 552-565, 2017-Recent debate on the trainability of youths has focused on the existence of periods of accelerated adaptation to training. Accordingly, the purpose of this meta-analysis was to identify the age- and maturation-related pattern of adaptive responses to plyometric training in youth athletes...
February 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28129141/wearable-devices-for-sports-new-integrated-technologies-allow-coaches-physicians-and-trainers-to-better-understand-the-physical-demands-of-athletes-in-real-time
#18
Dhruv R Seshadri, Colin Drummond, John Craker, James R Rowbottom, James E Voos
Elite-level athletes and professional sports teams are continually searching for opportunities to improve athletic performance and gain a competitive advantage on the field. Advances in technology have provided new avenues to maximize player health and safety. Over the last decade, time?motion analysis systems, such as video recording and computer digitization, have been used to measure human locomotion and improve sports performance. While these techniques were state of the art at the time, their usefulness is inhibited by the questionable validity of the acquired data, the labor-intensive nature of collecting data with manual hand-notation techniques, and their inability to track athlete position, movement, displacement, and velocity...
January 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28121796/sil-6r-is-related-to-weekly-training-mileage-and-psychological-well-being-in-athletes
#19
Tom Cullen, Andrew W Thomas, Richard Webb, Thom Phillips, Michael G Hughes
INTRODUCTION: IL-6 has been ascribed both positive and negative roles in the context of exercise and training. The dichotomous nature of IL-6 signalling appears to be determined by the respective concentration of its receptors (both membrane-bound (IL-6R) and soluble (sIL-6R) forms). The purpose of the present study was to investigate the response of sIL-6R to long-term training, and to investigate the relationship between sIL-6R, self-reported measures of wellbeing, and upper respiratory illness symptoms (URS) in highly-trained endurance athletes...
January 24, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28121198/supercompensation-kinetics-of-physical-qualities-during-a-taper-in-team-sport-athletes
#20
Bruno Marrier, Julien Robineau, Julien Piscione, Mathieu Lacome, Alexis Peeters, Christophe Hausswirth, Jean-Benoît Morin, Yann Le Meur
PURPOSE: Peaking for major competition is considered critical for maximizing team sports performance. However, there is little scientific information available to guide coaches in prescribing efficient tapering strategies for team sports players. The aim of this study was to monitor the changes in physical performance in elite team sports players during a 3-week taper following a pre-season training camp. METHODS: Ten male international rugby sevens players were tested before (Pre) and after (Post) a 4-week pre-season training camp focusing on high-intensity training and strength training with moderate loads, and once each week during a subsequent 3-week taper (T1, T2, T3)...
January 25, 2017: International Journal of Sports Physiology and Performance
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