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https://www.readbyqxmd.com/read/28328719/predicting-the-maximum-dynamic-strength-in-bench-press-the-high-precision-of-the-bar-velocity-approach
#1
Irineu Loturco, Ronaldo Kobal, José E Moraes, Katia Kitamura, César C Cal Abad, Lucas A Pereira, Fábio Y Nakamura
Loturco, I, Kobal, R, Moraes, JE, Kitamura, K, Cal Abad, CC, Pereira, LA, and Nakamura, FY. Predicting the maximum dynamic strength in bench press: the high precision of the bar velocity approach. J Strength Cond Res 31(4): 1127-1131, 2017-The aim of this study was to determine the force-velocity relationship and test the possibility of determining the 1 repetition maximum (1RM) in "free weight" and Smith machine bench presses. Thirty-six male top-level athletes from 3 different sports were submitted to a standardized 1RM bench press assessment (free weight or Smith machine, in randomized order), following standard procedures encompassing lifts performed at 40-100% of 1RM...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28328717/perceived-sleep-quality-mood-states-and-their-relationship-with-performance-among-brazilian-elite-athletes-during-a-competitive-period
#2
Ricardo Brandt, Guilherme G Bevilacqua, Alexandro Andrade
Brandt, R, Bevilacqua, GG, and Andrade, A. Perceived sleep quality, mood states, and their relationship with performance among Brazilian elite athletes during a competitive period. J Strength Cond Res 31(4): 1033-1039, 2017-We described the perceived sleep quality and mood states of elite athletes during a competitive period, and clarified their relationship to athletes' sport performance. Participants were 576 Brazilian elite athletes (404 men and 172 women) of individual and team sports. Mood states were evaluated using the Brunel Mood Scale, whereas perceived sleep quality was evaluated using a single question ("How would you evaluate the quality of your sleep in the last few days?")...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28327371/longitudinal-changes-in-linguistic-complexity-among-professional-football-players
#3
Visar Berisha, Shuai Wang, Amy LaCross, Julie Liss, Pamela Garcia-Filion
Reductions in spoken language complexity have been associated with the onset of various neurological disorders. The objective of this study is to analyze whether similar trends are found in professional football players who are at risk for chronic traumatic encephalopathy. We compare changes in linguistic complexity (as indexed by the type-to-token ratio and lexical density) measured from the interview transcripts of players in the National Football League (NFL) to those measured from interview transcripts of coaches and/or front-office NFL executives who have never played professional football...
March 16, 2017: Brain and Language
https://www.readbyqxmd.com/read/28321588/use-of-bioimpedianciometer-as-predictor-of-mountain-marathon-performance
#4
Vicente Javier Clemente-Suarez, Pantelis Theodoros Nikolaidis
This study aimed to examine the relation among body composition, training experience and race time during a mountain marathon. Body composition and training pre-race experience analyses were conducted previous to a mountain marathon in 52 male athletes. A significant correlation between race time and mountain marathon with chronological age, body fat mass, percentage of body fat (BF), level of abdominal obesity, sport experience and daily training volume was revealed. In addition, BF and athlete's chronological age were negatively associated with race performance...
May 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28320567/gender-differences-in-concussion-and-postinjury-cognitive-findings-in-an-older-and-younger-pediatric-population
#5
Sarah Tanveer, Nassim Zecavati, Elizabeth Bronson Delasobera, Temitayo Oyefunmike Oyegbile
BACKGROUND: Studies have documented gender differences associated with concussion. The purpose of this study was to determine if these gender differences are also noted within a pediatric population. METHODS: This prospective study analyzed 1971 patients who had completed preconcussion and postconcussion neuropsychological testing within the Washington, DC, area. RESULTS: Our results showed that children and adolescents with concussion exhibit gender differences with respect to risk factors, recovery, and symptomatology...
February 9, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28316263/individualised-dietary-strategies-for-olympic-combat-sports-acute-weight-loss-recovery-and-competition-nutrition
#6
Reid Reale, Gary Slater, Louise M Burke
Olympic combat sports separate athletes into weight divisions, in an attempt to reduce size, strength, range and/or leverage disparities between competitors. Official weigh-ins are conducted anywhere from 3 and up to 24 h prior to competition ensuring athletes meet weight requirements (i.e. have 'made weight'). Fighters commonly aim to compete in weight divisions lower than their day-to-day weight, achieved via chronic and acute manipulations of body mass (BM). Although these manipulations may impair health and absolute performance, their strategic use can improve competitive success...
March 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28314495/global-service-learning-and-student-athletes-a-model-for-enhanced-academic-inclusion-at-the-university-of-washington
#7
Holly M Barker
BACKGROUND: The University of Washington (UW) continues to create opportunities to engage all students in transformational undergraduate educational opportunities, such as study abroad. OBJECTIVE: This article describes specific efforts to increase inclusion for student-athletes in study abroad, particularly for first-generation students, including low-income students of color. Given the overrepresentation of students of color in sports vis-à-vis the larger student body at predominantly white institutions (PWIs), like UW, service-learning in communities beyond campus boundaries provides opportunities to apply international learning to a local context and to create a continuum of learning...
November 2016: Annals of Global Health
https://www.readbyqxmd.com/read/28301433/a-comparison-of-bilateral-muscular-imbalance-ratio-calculations-using-functional-tests
#8
Theodoros M Bampouras, Susan Dewhurst
Bilateral muscular imbalance can increase the risk of injury and negatively impact sporting performance. Bilateral muscular imbalances are typically calculated as ((side 1-side 2)/reference value) x 100, to provide a percentage value of the difference between limbs. Using different numerator (right-left or strong-weak) or reference values (left, right, strong, weak, average of the two) could mask or inflate the true difference value. The present study aimed to compare the bilateral muscular imbalance ratio calculations, using the absolute difference between limbs as the numerator and the five different options as reference values...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28287684/the-value-of-sleep-on-athletic-performance-injury-and-recovery-in-the-young-athlete
#9
Elizabeth A Copenhaver, Alex B Diamond
Adequate sleep can easily become compromised as student-athletes try to balance the multiple demands on their time. People with sleep deficiency are at increased risk for acute illnesses, traumatic sports injuries, and development of chronic diseases. Training sessions or competitions during extremely early or late hours can interfere with circadian and homeostatic rhythms. Adjusting the training schedule to improve sleep duration has a significantly positive impact on several aspects of athletic performance...
March 1, 2017: Pediatric Annals
https://www.readbyqxmd.com/read/28283992/training-load-monitoring-in-team-sports-a-novel-framework-separating-physiological-and-biomechanical-load-adaptation-pathways
#10
Jos Vanrenterghem, Niels Jensby Nedergaard, Mark A Robinson, Barry Drust
There have been considerable advances in monitoring training load in running-based team sports in recent years. Novel technologies nowadays offer ample opportunities to continuously monitor the activities of a player. These activities lead to internal biochemical stresses on the various physiological subsystems; however, they also cause internal mechanical stresses on the various musculoskeletal tissues. Based on the amount and periodization of these stresses, the subsystems and tissues adapt. Therefore, by monitoring external loads, one hopes to estimate internal loads to predict adaptation, through understanding the load-adaptation pathways...
March 10, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28277429/the-influence-of-exercise-to-rest-ratios-on-physical-and-physiological-performance-during-hurling-specific-small-sided-games
#11
Shane Malone, Brian Hughes, Kieran Collins
The current study examined the impact of different exercise to rest ratios on hurling specific small-sided games (SSG). Thirty-four (n = 34) hurling players were monitored during an in-season training period. Heart rate (Polar Electro Oy, Kempele, Finland) and global positioning system technology (VX Sport, 4-Hz, Lower Hutt, New Zealand) were used to analyse the physical and physiological differences between exercise to rest ratios across bouts of SSG. Total distance (m) high-speed distance (m) (≥17 km·h), very high-speed distance (≥22 km·h) (m), total accelerations (n), acceleration distance (m), peak velocity (km·h) and % maximum heart rate (%HRmax) were measured...
March 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28268467/characterizing-muscular-activities-using-non-negative-matrix-factorization-from-emg-channels-for-driver-swings-in-golf
#12
Yasunori Ozaki, Ryosuke Aoki, Toshitaka Kimura, Youichi Takashima, Tomohiro Yamada
The goal of this study is to propose a data driven approach method to characterize muscular activities of complex actions in sports such as golf from a lot of EMG channels. Two problems occur in a many channel measurement. The first problem is that it takes a lot of time to check the many channel data because of combinatorial explosion. The second problem is that it is difficult to understand muscle activities related with complex actions. To solve these problems, we propose an analysis method of multi EMG channels using Non-negative Matrix Factorization and adopt the method to driver swings in golf...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28266908/evaluating-strategic-periodisation-in-team-sport
#13
Sam Robertson, David Joyce
The planned peaking for matches or events of perceived greatest priority or difficulty throughout a competitive season is commonplace in high-level team sports. Despite this prevalence in the field, little research exists on the practice. This study aimed to provide a framework for strategic periodisation which team sport organisations can use to evaluate the efficacy of such plans. Data relating to factors potentially influencing the difficulty of matches were obtained for games played in the 2014 Australian Football League season...
March 7, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28257612/health-care-in-high-school-athletics-in-west-virginia
#14
Kyle Schneider, Wesley Meeteer, Jill A Nolan, H David Campbell
INTRODUCTION: The purpose of this study was to determine the level of implementation of emergency preparedness procedures and administrative procedures to provide appropriate medical coverage to high school athletics in the predominantly rural US state of West Virginia. Particular attention was given to determine the extent to which the schools provided the recommendations for best practice in the National Athletic Trainers Association consensus statement outlining appropriate medical coverage for high school athletics...
January 2017: Rural and Remote Health
https://www.readbyqxmd.com/read/28253034/playing-experience-and-position-influence-injury-risk-among-ncaa-division-i-collegiate-footballers
#15
Robert McCunn, Hugh H K Fullagar, Sean Williams, Travis J Halseth, John A Sampson, Andrew Murray
PURPOSE: American football is widely played by collegiate student-athletes throughout the United States; however, the associated injury risk is greater than in other team sports. Numerous factors likely contribute to this risk yet research identifying these risk factors is limited. The present study sought to explore the relationship between playing experience and position on injury risk within NCAA Division I collegiate footballers. METHODS: Seventy-six male collegiate student athletes within the American football program of an NCAA Division I university participated...
March 2, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28253031/the-relationship-between-training-load-and-injury-in-men-s-professional-basketball-players
#16
Kaitlyn J Weiss, Sian V Allen, Mike R McGuigan, Chris S Whatman
PURPOSE: To establish the relationship between the acute:chronic workload ratio and lower extremity overuse injuries in professional basketball players over the course of a competitive season. METHODS: The acute:chronic workload ratio was determined by calculating the sum of the current week's session rate of perceived exertion (sRPE) training load (acute load) and dividing it by the average weekly training load over the previous four weeks (chronic load). All injuries were recorded weekly using a self-reported injury questionnaire (Oslo Sports Trauma Research Centre Injury Questionnaire(20)) Workload ratios were modelled against injury data using a logistic regression model with unique intercepts for each player...
March 2, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28250934/team-sport-athletes-perceptions-and-use-of-recovery-strategies-a-mixed-methods-survey-study
#17
Fiona Crowther, Rebecca Sealey, Melissa Crowe, Andrew Edwards, Shona Halson
BACKGROUND: A variety of recovery strategies are used by athletes, although there is currently no research that investigates perceptions and usage of recovery by different competition levels of team sport athletes. METHODS: The recovery techniques used by team sport athletes of different competition levels was investigated by survey. Specifically this study investigated if, when, why and how the following recovery strategies were used: active land-based recovery (ALB), active water-based recovery (AWB), stretching (STR), cold water immersion (CWI) and contrast water therapy (CWT)...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28240706/manifestations-of-proprioception-during-vertical-jumps-to-specific-heights
#18
Struzik Artur, Pietraszewski Bogdan, Kawczyñski Adam, Winiarski Sławomir, Juras Grzegorz, Rokita Andrzej
Jumping and proprioception are important abilities in many sports. The efficiency of the proprioceptive system is indirectly related to jumps performed at specified heights. Therefore, this study recorded the ability of young athletes who play team sports to jump to a specific height compared to their maximum ability. A total of 154 male (age: 14.8±0.9 years, body height: 181.8±8.9 cm, body weight: 69.8±11.8 kg, training experience: 3.8±1.7 years) and 151 female (age: 14.1±0.8 years, body height: 170.5±6...
February 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28231260/effects-of-the-skills4genius-sports-based-training-program-in-creative-behavior
#19
Sara Santos, Sergio Jiménez, Jaime Sampaio, Nuno Leite
Team Sports has been suggested as a suitable environment to investigate creative behavior. This study's purpose was two-fold: first, it intended to identify the effects of the Skills4Genius sports-bases training program in thinking, motor, and in-game creative behavior in team sports. Second, it aimed to investigate the relationship between creative thinking and in-game creativity. Forty children from primary school were allocated into control (n = 18, age: 9.2±0.4) and experimental (n = 22, age: 9.5±0.7) groups...
2017: PloS One
https://www.readbyqxmd.com/read/28229575/effects-of-a-low-volume-plyometric-training-in-anaerobic-performance-of-adolescent-athletes
#20
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
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