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https://www.readbyqxmd.com/read/28515981/a-six-week-supervised-exercise-and-educational-intervention-after-total-hip-arthroplasty-a-case-series
#1
Federico Pozzi, Kathleen Madara, Joseph A Zeni
BACKGROUND AND PURPOSE: Most rehabilitation interventions after total hip arthroplasty (THA) are not designed to return patients to high-levels of physical activity and, thus, low levels of physical activity and residual weakness are common. The purpose of this case series was to describe the feasibility and preliminary efficacy of an exercise and education intervention for patients after THA who have already completed formal outpatient physical therapy. STUDY DESIGN: Case series...
April 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28515832/a-low-dose-caffeine-and-carbohydrate-supplement-does-not-improve-athletic-performance-during-volleyball-competition
#2
David R Pfeifer, Kelsey M Arvin, Courtney N Herschberger, Nicholas J Haynes, Matthew S Renfrow
Dietary supplements are widely used to enhance sport performance and the combination of carbohydrate and caffeine (CHO+CAF) has yielded particularly high performance gains. Though the effects of a CHO+CAF supplement have been studied in a laboratory environment, little research exists on the effects of supplementation during competition. Therefore, the purpose of this study was to determine the effects of a CHO+CAF supplement on athletic performance in competition. Eight female collegiate volleyball players completed three testing sessions under three different conditions separated by approximately one week each: CHO+CAF supplement, placebo (PBO), and control (CTL) using a randomized, cross-over design...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28506094/a-preliminary-study-of-youth-sport-concussions-parents-health-literacy-and-knowledge-of-return-to-play-protocol-criteria
#3
Robert W Turner, Jeffery W Lucas, Lewis H Margolis, Brian N Corwell
PRIMARY OBJECTIVE: To preliminarily explore parents' health literacy and knowledge of youth sport league rules involving concussion education and training, and return-to-play protocols. RESEARCH DESIGN AND METHODS: This study was guided by the Knowledge, Attitude and Practice (KAP) model of health knowledge to examine parents' concussion literacy, and understanding of concussion education and training, and return-to-play protocols in youth sports. The mixed-method design involved 119 participants; that included in-person (n=8) and telephone (n=4) interviews, and web-based surveys administered through Mechanical Turk via Qualtrics (n=98)...
May 16, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28493061/chronotype-physical-activity-and-sport-performance-a-systematic-review
#4
REVIEW
Jacopo Antonino Vitale, Andi Weydahl
BACKGROUND: Many variables related to sport have been shown to have circadian rhythms. Chronotype is the expression of circadian rhythmicity in an individual, and three categories of chronotype are defined: morning types (M-types), evening types (E-types), and neither types (N-types). M-types show earlier peaks of several psychophysiological variables during the day than E-types. The effect of chronotype on athletic performance has not been extensively investigated. OBJECTIVE: The objective of the present review was to study the effect of chronotype on athletic performance and the psychophysiological responses to physical activity...
May 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28493060/synthetic-turf-fields-crumb-rubber-and-alleged-cancer-risk
#5
Archie Bleyer
Most synthetic turf fields have crumb rubber interspersed among the simulated grass fibers to reduce athletic injuries by allowing users to turn and slide more readily as they play sports or exercise on the fields. Recently, the crumbs have been implicated in causing cancer in adolescents and young adults who use the fields, particularly lymphoma and primarily in soccer goalkeepers. This concern has led to the initiation of large-scale studies by local and federal governments that are expected to take years to complete...
May 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28479281/explaining-match-outcome-and-ladder-position-in-the-national-rugby-league-using-team-performance-indicators
#6
Carl T Woods, Wade Sinclair, Sam Robertson
OBJECTIVES: To examine the extent at which match outcome and ladder position could be explained using team performance indicators in the National Rugby League (NRL). METHODS: The dataset consisted of 13 performance indicators acquired from each NRL team across the 2016 season (n=376 observations). Data was sorted according to apriori match outcome (win/loss) and ladder position (one to 16). Given the binary and categorical nature of the response variables, two analysis approaches were used; a conditional interference classification tree and ordinal regression...
April 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28478963/shoulder-and-elbow-pain-in-elementary-school-baseball-players-the%C3%A2-results-from-a-nation-wide-survey-in-japan
#7
Kenji Takagishi, Tetsuya Matsuura, Takashi Masatomi, Etsuo Chosa, Tsuyoshi Tajika, Mikihiko Watanabe, Tetsu Iwama, Toshiro Otani, Katsunori Inagaki, Hiroyasu Ikegami, Mitsuhiro Aoki, Ko Kato, Toru Okuwaki, Koichi Sairyo, Yasushi Kameyama, Akira Maeda, Moroe Beppu
BACKGROUND: Despite recommendations on how to prevent baseball injuries in youths by the Japanese Society of Clinical Sports Medicine, shoulder and elbow pain still frequently occurs in young baseball players. We conducted a questionnaire survey among baseball players at elementary schools across the country to understand the practice conditions of players, examining the risk factors of shoulder and elbow pain in baseball players. METHODS: The questionnaire survey was conducted among elementary school baseball players as members of the Baseball Federation of Japan in September 2015...
May 3, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28475550/duration-specific-running-performance-in-elite-gaelic-football
#8
Shane Malone, Barry Solan, Brian Hughes, Kieran Collins
The aim of the current investigation was to determine the position and duration specific running performance of elite Gaelic football players through the use of a moving average method. Global positioning system data (4-Hz, VX Sport, New-Zealand) were collected from thirty-five (n = 35) elite Gaelic football players across a two season period. A total of 32 competitive matches were analysed with 300 full match play data samples obtained for final analysis. Players were categorised based on positional groups; full-back, half-back, midfield, half- forward and full-forward...
April 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28463642/monitoring-athlete-training-loads-consensus-statement
#9
Pitre C Bourdon, Marco Cardinale, Andrew Murray, Paul Gastin, Michael Kellmann, Matthew C Varley, Tim J Gabbett, Aaron J Coutts, Darren J Burgess, Warren Gregson, N Timothy Cable
Monitoring the load placed on athletes in both training and competition has become a very hot topic in sport science. Both scientists and coaches routinely monitor training loads using multidisciplinary approaches, and the pursuit of the best methodologies to capture and interpret data has produced an exponential increase in empirical and applied research. Indeed, the field has developed with such speed in recent years that it has given rise to industries aimed at developing new and novel paradigms to allow us to precisely quantify the internal and external loads placed on athletes and to help protect them from injury and ill health...
April 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28462570/anthropometric-and-performance-characteristics-of-the-german-rugby-union-7s-team
#10
Erich Hohenauer, Alfred M Rucker, Peter Clarys, Ursula M Küng, Rahel Stoop, Ron Clijsen
BACKGROUND: Somatotyping is advantageous in sports for the optimal development of performance level and injury prevention. The aim of this study was to describe the anthropometric and physical performance characteristics of the German national rugby union 7s team. Seventeen male rugby players, classified as forwards (n=9; 24.2±2.1 years) and backs (n=8; 24.3±5.05 years) were assessed. METHODS: Anthropometric measurements included: body height, weight, height to weight ratio (H/W), five skinfolds, biepicondylar humerus and femur breadth, upper arm- and calf girth, estimated lower body fat percentage and determination of the individual and mean somatotype...
April 28, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28459298/reliability-of-power-settings-of-the-wahoo-kickr-power-trainer-after-60-hours-of-use
#11
Emma K Zadow, Cecilia M Kitic, Sam S X Wu, James W Fell
PURPOSE: The purpose of this study was to assess the reliability of power output measurements of a Wahoo KICKR Power Trainer (KICKR) on two separate occasions, separated by fourteen months of regular use (~1 h per week). METHODS: Using the KICKR to set power outputs, powers of 100-600W in increments of 50W were assessed at cadences of 80, 90 and 100rev.min(-1) which were controlled and validated by a dynamic calibration rig (CALRIG). RESULTS: A small ratio bias of 1...
May 1, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28457670/implications-of-altered-autonomic-control-on-sports-performance-in-athletes-with-spinal-cord-injury
#12
REVIEW
Sebastian Cruz, Cheri A Blauwet
It is well known that athletes with spinal cord injury (SCI) may experience altered autonomic physiology that impacts their exercise capacity and sports performance. This is particularly relevant given the ever-increasing number of individuals with SCI who are actively engaged in sports at all levels, from community-based adaptive sports to elite Paralympic competitions. As such, the purpose of this article is to review the present literature regarding the implications of altered autonomic control on the safety and performance of athletes with SCI...
April 4, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28446892/the-effect-of-coaches-controlling-style-on-the-competitive-anxiety-of-young-athletes
#13
Yago Ramis, Miquel Torregrosa, Carme Viladrich, Jaume Cruz
Framed on a Self-Determination Theory perspective, the purpose of this study was to explore the predictive capacity of coaches' interpersonal controlling style on the competitive anxiety of young athletes, considering the mediating effect of the athletes' controlled motivation on this relationship. The sample consisted of 1166 athletes, aged between 9 and 18, who ranked their perceptions of coaches' controlling style, as well as the reasons for participating in sport and their competitive anxiety before or during competition...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28445227/a-review-of-player-monitoring-approaches-in-basketball-current-trends-and-future-directions
#14
Jordan L Fox, Aaron T Scanlan, Robert Stanton
Effective monitoring of players in team-sports such as basketball requires an understanding of the external demands and internal responses as they relate to training phases and competition. Monitoring of external demands and internal responses allows coaching staff to determine the dose-response associated with the imposed training load, and subsequently, if players are adequately prepared for competition. This review discusses measures reported in the literature for monitoring the external demands and internal responses of basketball players during training and competition...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28435337/treatment-strategies-for-the-female-athlete-triad-in-the-adolescent-athlete-current-perspectives
#15
REVIEW
Jill Thein-Nissenbaum, Erin Hammer
Since the passage of Title IX in 1972, female sports participation has dramatically increased. The benefits of physical activity, including decreased risk for heart disease and diabetes as well as improved body image and self-esteem, far outweigh the risks. However, a select population of adolescent and young adult females may experience symptoms related to the female athlete triad (Triad), which refers to the interrelatedness of energy availability, menstrual function, and bone mineral density (BMD). These conditions often manifest clinically as disordered eating behaviors, menstrual irregularity, and stress fractures; an individual may suffer from 1 or all of the Triad components simultaneously...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28429996/are-athletes-doping-related-attitudes-predicted-by-their-perceptions-of-coaches-confrontation-efficacy
#16
Philip Sullivan, Parmida Razavi
BACKGROUND: The coaching process is complex and dynamic. Coaches are known to affect athlete attitudes indirectly, through athletes' perceptions and interpretations. This process has been verified with a variety of ethical behaviors. OBJECTIVES: The current study investigated the relationships between athletes' perceived doping confrontation efficacy of their coaches and athlete's anti-doping attitudes. METHODS: A sample of athletes (N = 96) completed a version of the Doping Confrontation Efficacy Scale that was modified to assess their perception of their coaches' anti-doping confrontation efficacy, and the PEAS (Performance Enhancing Attitude Scale), which assessed their performance-enhancing attitudes...
April 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28387559/legal-aspects-of-concussion-the-ever-evolving-standard-of-care
#17
Steven Pachman, Adria Lamba
Today, when an athlete is catastrophically injured while playing a sport, litigation often follows. The likelihood of litigation is even greater in the event of a head injury, especially when the athlete can allege that a prior concussion somehow contributed to the current injury. Whether the potential defendants in these lawsuits, such as schools, coaches, athletic trainers, and other health care professionals, actually face legal liability depends on whether they are deemed to have conformed to the standard of care...
March 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28382758/coaching-is-teamwork-the-role-of-need-supportive-coaching-and-the-motivational-climate-in-stimulating-proactivity-in-volleyball-teams
#18
S Van Puyenbroeck, J Stouten, G Vande Broek
Team sports settings are challenging, dynamic environments in which coaches often benefit from proactive players who take initiative in providing valuable suggestions and feedback. Based on self-determination theory and achievement goal theory, this study examined the mediating role of a mastery and performance motivational climate in the positive relation between coaches' psychological need-supportive behavior and team athletes' proactivity. The study sample consisted of 75 male and 105 female volleyball players (Mage =21...
April 6, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28368958/a-field-based-cycling-test-to-assess-predictors-of-endurance-performance-and-establishing-training-zones
#19
Dajo Sanders, Richard J Taylor, Tony Myers, Ibrahim Akubat
This study evaluates the relationship between a field-based 8-min time trial (8MTT) and physiological endurance variables assessed with an incremental laboratory test. Secondly, lactate thresholds assessed in the laboratory were compared to estimated functional threshold power (FTP) from the 8MTT. Nineteen well-trained road cyclists (aged 22 ± 2 yr, height 185.9 ± 4.5 cm, weight 72.8 ± 4.6 kg, VO2max 64 ± 4 ml·min·kg) participated. Linear regression revealed that mean 8MTT power output (PO) was strongly to very strongly related to PO at 4 mmol[BULLET OPERATOR]L, PO at initial rise of 1...
March 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28360143/return-to-play-after-hamstring-injuries-in-football-soccer-a-worldwide-delphi-procedure-regarding-definition-medical-criteria-and-decision-making
#20
Nick van der Horst, Fjg Backx, Edwin A Goedhart, Bionka Ma Huisstede
There are three major questions about return to play (RTP) after hamstring injuries: How should RTP be defined? Which medical criteria should support the RTP decision? And who should make the RTP decision? The study aimed to provide a clear RTP definition and medical criteria for RTP and to clarify RTP consultation and responsibilities after hamstring injury. The study used the Delphi procedure. The results of a systematic review were used as a starting point for the Delphi procedure. Fifty-eight experts in the field of hamstring injury management selected by 28 FIFA Medical Centres of Excellence worldwide participated...
March 30, 2017: British Journal of Sports Medicine
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