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https://www.readbyqxmd.com/read/28068210/how-players-exploit-variability-and-regularity-of-game-actions-in-female-volleyball-teams
#1
Ana Ramos, Patrícia Coutinho, Pedro Silva, Keith Davids, Isabel Mesquita
Variability analysis has been used to understand how competitive constraints shape different behaviours in team sports. In this study, we analysed and compared variability of tactical performance indices in players within complex I at two different competitive levels in volleyball. We also examined whether variability was influenced by set type and period. Eight matches from the 2012 Olympics competition and from the Portuguese national league in the 2014-2015 season were analysed (1496 rallies). Variability of setting conditions, attack zone, attack tempo and block opposition was assessed using Shannon entropy measures...
January 9, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28068167/vehicle-exposure-and-spinal-musculature-fatigue-in-military-warfighters-a-meta-analysis
#2
Roger O Kollock, Kenneth E Games, Alan E Wilson, JoEllen M Sefton
CONTEXT:  Spinal musculature fatigue from vehicle exposure may place warfighters at risk for spinal injuries and pain. Research on the relationship between vehicle exposure and spinal musculature fatigue is conflicting. A better understanding of the effect of military duty on musculoskeletal function is needed before sports medicine teams can develop injury-prevention programs. OBJECTIVE:  To determine if the literature supports a definite effect of vehicle exposure on spinal musculature fatigue...
November 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/28065996/history-of-the-royal-college-of-chiropractic-sports-sciences-canada-the-early-years
#3
John De Finney, Gordon Lawson, David Gryfe, Susan Gillis-Lawson, John P Crawford
In 1978 the Canadian Chiropractic Association recognized the need to establish an organization that would prepare chiropractors to treat athletic injuries and promote these services to sports organizations. Dr. Adrian Grice approached three chiropractors to establish such an organization. The Canadian Chiropractic Sports Academy (CCSA) was established in 1978. This was the start of the chiropractic sports movement which has seen chiropractors playing prominent roles as team doctors to professional and amateur teams and athletes and in the delivery of care at major national and international competitions...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28051343/methodological-considerations-when-quantifying-high-intensity-efforts-in-team-sport-using-global-positioning-system-technology
#4
Matthew C Varley, Arne Jaspers, Werner F Helsen, James J Malone
Purpose Sprints and accelerations are popular performance indicators in applied sport. The methods used to define these efforts using athlete tracking technology could affect the number of efforts reported. The study aimed to determine the influence of different techniques and settings for detecting high-intensity efforts using Global Positioning System (GPS) data. Methods Velocity and acceleration data of a professional soccer match was recorded via 10-Hz GPS. Velocity data was filtered using either a median or exponential filter...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28051327/are-there-potential-safety-issues-concerning-the-safe-usage-of-electronic-personal-tracking-devices-the-experience-of-a-multi-sport-elite-club
#5
Daniel Medina, Eduard Pons, Antonio Gomez, Marc Guitart, Andres Martin, Jairo Vazquez-Guerrero, Ismael Camenforte, Berta Carles, Roger Font
Despite approval of the use of electronic personal tracking devices (EPTD) during competition by the International Football Association Board (IFAB), other team sport organizations and leagues have banned its use due to "safety concerns", with no evidence to support this assertion. The aim of the current brief report is to provide empirical evidence to support the wide-spread usage across all sports by examining safety issues concerning the use of EPTD in a multi-team sports club. A total of 5 outdoor football teams (first team, second team, under 19, under 18 and first team female) and 3 indoor multi-sport (basketball, futsal and handball) teams have been monitored; accounting for a total of 63...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28039181/sports-biostatistician-a-critical-member-of-all-sports-science-and-medicine-teams-for-injury-prevention
#6
REVIEW
Martí Casals, Caroline F Finch
Sports science and medicine need specialists to solve the challenges that arise with injury data. In the sports injury field, it is important to be able to optimise injury data to quantify injury occurrences, understand their aetiology and most importantly, prevent them. One of these specialty professions is that of Sports Biostatistician. The aim of this paper is to describe the emergent field of Sports Biostatistics and its relevance to injury prevention. A number of important issues regarding this profession and the science of sports injury prevention are highlighted...
December 30, 2016: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28035865/effect-of-contact-and-no-contact-small-sided-games-on-elite-handball-players
#7
Antonio Dello Iacono, Domenico Martone, Alessandro Moura Zagatto, Yoav Meckel, Mahmood Sindiani, Mirjana Milic, Johnny Padulo
This study aimed to investigate the effect of contact (C-SSG) and no-contact (NC-SSG) handball small-sided games (SSGs) on motion patterns and physiological responses of elite handball players. Twelve male handball players performed 10 C-SSG and 10 NC-SSG while being monitored through the heart rate (HR) and rate of perceived exertion (RPE) as physiological responses and time-motion activities profile using video-match analysis. Both game conditions resulted in similar HR responses (P > 0.05), but the NC-SSG led to a higher RPE scores...
December 30, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28033652/high-ankle-injury-rate-in-adolescent-basketball-a-3-year-prospective-follow-up-study
#8
K Pasanen, T Ekola, T Vasankari, P Kannus, A Heinonen, U M Kujala, J Parkkari
This prospective study investigated the incidence and pattern of acute time-loss injuries in young female and male basketball players. Eight basketball teams (n=201; mean age 14.85±1.5) participated in the follow-up study (2011-2014). The coaches recorded player participation in practices and games on a team diary. A study physician contacted the teams once a week to check new injuries and interviewed the injured players. In total, 158 injuries occurred. The overall rate of injury (per 1000 hours) was 2.64 (95% CI 2...
December 29, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28033034/understanding-the-consequences-of-newcomer-integration-processes-the-sport-team-socialization-tactics-questionnaire
#9
Alex J Benson, Mark Eys
The ways in which newcomers are integrated into sport teams may have broad consequences for the athletes entering the group, as well as existing team members. Drawing from organizational socialization theory, the current research developed a questionnaire to assess athletes' perceptions of how newcomers are socialized into their group. Across four studies, think aloud interviews (N = 8), an expert panel review (N = 6), cross-sectional tests of the factor structure (Nstudy 2 = 197; Nstudy 3 = 460), and a two-wave correlational design (Nstudy 4 = 194) were used to evaluate the construct validity and the internal consistency of the Sport Team Socialization Tactics Questionnaire (STSTQ)...
December 29, 2016: Journal of Sport & Exercise Psychology
https://www.readbyqxmd.com/read/28030532/the-application-of-a-simple-surveillance-method-for-detecting-the-prevalence-and-impact-of-overuse-injuries-in-professional-men-s-basketball
#10
K Weiss, M McGuigan, T Besier, C Whatman
The aim of this study was to use the Oslo Sports Trauma Research Centre (OSTRC) overuse injury questionnaire to record overuse injuries over a single season for a men's professional basketball team in order to; (i) assess the prevalence and severity of overuse injuries and (ii) determine the efficacy of this method in identifying overuse injuries in comparison to the team physiotherapist's detection of these injuries. Thirteen athletes from a men's professional basketball team participated in this study. The self-reported, OSTRC injury questionnaire was used to record overuse conditions of the ankle, knee, lower back over an entire 24-week season...
December 24, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28028894/attacking-22-entries-in-rugby-union-running-demands-and-differences-between-successful-and-unsuccessful-entries
#11
P Tierney, D P Tobin, C Blake, E Delahunt
Global Positioning System (GPS) technology is commonly utilized in team sports, including rugby union. It has been used to describe the average running demands of rugby union. This has afforded an enhanced understanding of the physical fitness requirements for players. However, research in team sports has suggested that training players relative to average demands may underprepare them for certain scenarios within the game. To date, no research has investigated the running demands of attacking 22 entries in rugby union...
December 28, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28025593/tobacco-use-and-its-health-effects-among-professional-athletes-in-qatar
#12
Zaina Chaabane, Zsolt Murlasits, Ziyad Mahfoud, Ruben Goebel
The objective of the study was to determine the effects of tobacco use on selected markers of health and lung function in professional athletes. A total of 108 male professional athletes participated in the study from ten ball game teams in the same sport league in Qatar (age = 26.4 ± 5.1 yrs, height = 190.6 ± 11.9 cm, and weight = 91.5 ± 16.4 kg). The athletes have been playing professionally for about 6.3 years on average. In addition to demographic and tobacco use status, the following clinical variables were measured: resting blood pressure, heart rate, FVC, FEV1 sec, and PEF...
2016: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/28017518/effectiveness-of-a-stress-management-pilot-program-aimed-at-reducing-the-incidence-of-sports-injuries-in-young-football-soccer-players
#13
Aurelio Olmedilla-Zafra, Victor J Rubio, Enrique Ortega, Alexandre García-Mas
OBJECTIVES: Several attempts to reduce the incidence of sport injuries using psychosocial interventions produced fruitful, although inconclusive results. This paper presents the effectiveness and implementation issues of a pilot 3-month stress-management and muscle relaxation program aimed at reducing sport injury incidence. DESIGN: Pre-post treatment-non treatment group comparison. PROGRAM ADMINISTRATION: The program was administered by a trained psychologist on a once-a-week, 1-h session basis...
September 6, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28010854/a-tale-of-two-runners-a-case-report-of-athletes-experiences-with-eating-disorders-in%C3%A2-college
#14
Paula A Quatromoni
Athletes are at higher risk than the general population for eating disorders, and risk is heightened for athletes in thin-build sports, including track. Collegiate athletes are particularly vulnerable to disordered eating when the transition from home to the college environment adds to the stress of performance pressures and the high demands of the sport environment. Male and female athletes who develop eating disorders share some common characteristics, yet their experiences can be quite different, in part as a consequence of their sex and how eating disorders develop, and are recognized, acknowledged, and treated, within the culture of sports...
January 2017: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/28005978/emergence-of-exploratory-technical-and-tactical-behavior-in-small-sided-soccer-games-when-manipulating-the-number-of-teammates-and-opponents
#15
Carlota Torrents, Angel Ric, Robert Hristovski, Lorena Torres-Ronda, Emili Vicente, Jaime Sampaio
The effects that different constraints have on the exploratory behavior, measured by the variety and quantity of different responses within a game situation, is of the utmost importance for successful performance in team sports. The aim of this study was to determine how the number of teammates and opponents affects the exploratory behavior of both professional and amateur players in small-sided soccer games. Twenty-two professional (age 25.6 ± 4.9 years) and 22 amateur (age 23.1 ± 0.7 years) male soccer players played three small-sided game formats (4 vs...
2016: PloS One
https://www.readbyqxmd.com/read/28002177/selected-physiological-perceptual-and-physical-performance-changes-during-two-bouts-of-prolonged-high-intensity-intermittent-running-separated-by-72-hours
#16
Nicholas Dobbin, Kevin Lamb, Craig Twist
This study investigated the effects of performing a second 90-minute intermittent running protocol 72 hours after an initial trial on selected physiological, perceptual and sprint running measures. Eight sub-elite soccer players provided measures of isokinetic muscle function, counter-movement jump (CMJ), 10 m sprinting, and muscle soreness before, and at 0, 24, 48 and 72 h after a 90-minute intermittent high intensity running bout (IHIR 1). A second 90-minute intermittent high intensity running bout (IHIR 2) was performed 72 h after the first...
December 8, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28000283/maturational-and-social-factors-contributing-to-relative-age-effects-in-school-sports-data-from-the-london-youth-games
#17
K E Reed, D A Parry, G R H Sandercock
Few studies have investigated whether relative age effects (RAEs) exist in school sport. None have sought to test the competing maturational and social-agent hypotheses proposed to explain the RAE. We aimed to determine the presence of RAEs in multiple school sports and examine the contribution of maturational and social factors in commonplace school sports. We analyzed birth dates of n=10645 competitors (11-18 years) in the 2013 London Youth Games annual inter-school multisport competition and calculated odds ratio (OR) for students competing based on their yearly birth quarter (Q1-Q4)...
December 20, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27997652/association-between-early-participation-in-physical-activity-following-acute-concussion-and-persistent-postconcussive-symptoms-in-children-and-adolescents
#18
Anne M Grool, Mary Aglipay, Franco Momoli, William P Meehan, Stephen B Freedman, Keith Owen Yeates, Jocelyn Gravel, Isabelle Gagnon, Kathy Boutis, Willem Meeuwisse, Nick Barrowman, Andrée-Anne Ledoux, Martin H Osmond, Roger Zemek
Importance: Although concussion treatment guidelines advocate rest in the immediate postinjury period until symptoms resolve, no clear evidence has determined that avoiding physical activity expedites recovery. Objective: To investigate the association between participation in physical activity within 7 days postinjury and incidence of persistent postconcussive symptoms (PPCS). Design, Setting, and Participants: Prospective, multicenter cohort study (August 2013-June 2015) of 3063 children and adolescents aged 5...
20, 2016: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/27995447/ethics-nanobiosensors-and-elite-sport-the-need-for-a-new-governance-framework
#19
Robert Evans, Michael McNamee, Owen Guy
Individual athletes, coaches and sports teams seek continuously for ways to improve performance and accomplishment in elite competition. New techniques of performance analysis are a crucial part of the drive for athletic perfection. This paper discusses the ethical importance of one aspect of the future potential of performance analysis in sport, combining the field of biomedicine, sports engineering and nanotechnology in the form of 'Nanobiosensors'. This innovative technology has the potential to revolutionise sport, enabling real time biological data to be collected from athletes that can be electronically distributed...
December 19, 2016: Science and Engineering Ethics
https://www.readbyqxmd.com/read/27986764/low-risk-of-concussions-in-top-level-karate-competition
#20
Rafael Arriaza, Dusana Cierna, Patricia Regueiro, David Inman, Franco Roman, Benjamin Abarca, Mercé Barrientos, Miguel A Saavedra
BACKGROUND: Although it is well known that injuries occur in combat sports, the true incidence of concussions is not clearly defined in the literature for karate competition. AIM: To determine the incidence of concussions in top-level (World Karate Federation World Championships) karate competition. METHODS: Injuries that took place in 4 consecutive World Karate Championships (from 2008 to 2014) were prospectively registered. A total of 4625 fights (2916 in the male category and 1709 in the female category) were scrutinised, and concussions were identified and analysed separately for frequency (rate per fight) and injury risk...
December 16, 2016: British Journal of Sports Medicine
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