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https://www.readbyqxmd.com/read/29352279/girls-in-the-boat-sex-differences-in-rowing-performance-and-participation
#1
Kevin G Keenan, Jonathon W Senefeld, Sandra K Hunter
Men outperform women in many athletic endeavors due to physiological and anatomical differences (e.g. larger and faster muscle); however, the observed sex differences in elite athletic performance are typically larger than expected, and may reflect sex-related differences in opportunity or incentives. As collegiate rowing in the United States has been largely incentivized for women over the last 20 years, but not men, the purpose of this study was to examine sex differences in elite rowing performance over that timeframe...
2018: PloS One
https://www.readbyqxmd.com/read/29345547/are-current-physical-match-performance-metrics-in-elite-soccer-fit-for-purpose-or-is-the-adoption-of-an-integrated-approach-needed
#2
Paul S Bradley, Jack D Ade
Time-motion analysis is a valuable data-collection technique used to quantify the physical match performance of elite soccer players. For over 40 years researchers have adopted a 'traditional' approach when evaluating match demands by simply reporting the distance covered or time spent along a motion continuum of walking through to sprinting. This methodology quantifies physical metrics in isolation without integrating other factors and this ultimately leads to a one-dimensional insight into match performance...
January 18, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29337832/comparison-of-step-by-step-kinematics-in-repeated-30m-sprints-in-female-soccer-players
#3
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
https://www.readbyqxmd.com/read/29336053/specific-modulation-of-vertebral-marrow-adipose-tissue-by-physical-activity
#4
Daniel L Belavy, Matthew J Quittner, Nicola D Ridgers, Adnan Shiekh, Timo Rantalainen, Guy Trudel
Marrow adipose tissue (MAT) accumulation with normal aging impacts the bone, hemopoiesis, and metabolic pathways. We investigated whether exercise was associated with lower MAT, as measured by vertebral marrow fat fraction (VFF) on magnetic resonance imaging. A total of 101 healthy individuals (54 females) aged 25 to 35 years without spine or bone disease but with distinct exercise histories were studied. Long-distance runners (67 km/wk, n = 25) exhibited lower mean lumbar VFF (27.9% [8.6%] versus 33...
January 16, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29332730/biomechanical-factors-associated-with-running-economy-and-performance-of-elite-kenyan-distance-runners-a-systematic-review
#5
REVIEW
Nassib Tawa, Quinette Louw
BACKGROUND: Running economy (RE) is a determinant of performance in endurance sports and is a complex multi-factorial measure which reflects the combined functioning of bio-mechanical, neuro-muscular, metabolic and cardio-respiratory factors some of which are hereditary or adapt to coaching. Kenyan distance runners have dominated major global events with their unmatched performance for decades and this phenomenon has prompted several investigations aimed at establishing possible factors associated with their performance...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332470/a-school-based-neuromuscular-training-program-and-sport-related-injury-incidence-a-prospective-randomized-controlled-clinical-trial
#6
Kim D Barber Foss, Staci Thomas, Jane C Khoury, Gregory D Myer, Timothy E Hewett
CONTEXT:   An estimated 40 million school-aged children (age range = 5-18 years) participate annually in sports in the United States, generating approximately 4 million sport-related injuries and requiring 2.6 million emergency department visits at a cost of nearly $2 billion. OBJECTIVE:   To determine the effects of a school-based neuromuscular training (NMT) program on sport-related injury incidence across 3 sports at the high school and middle school levels, focusing particularly on knee and ankle injuries...
January 13, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29330176/therapists-experiences-with-a-new-treatment-combining-physical-exercise-and-dietary-therapy-the-ped-t-for-eating-disorders-an-interview-study-in-a-randomised-controlled-trial-at-the-norwegian-school-of-sport-sciences
#7
Maria Bakland, Jorunn Sundgot-Borgen, Rolf Wynn, Jan H Rosenvinge, Annett Victoria Stornæs, Gunn Pettersen
OBJECTIVES: The aim of the current study is to explore how therapists running a guided physical exercise and dietary therapy programme (PED-t) experience their contribution to the treatment of patients with bulimia nervosa and binge eating disorder. METHODS: Ten therapists running the PED-t were semistructurally interviewed and the transcribed interviews were analysed using a systematic text condensation approach. SETTING: The study was run within the context of a randomised controlled trial at the Norwegian School of Sport Sciences...
January 11, 2018: BMJ Open
https://www.readbyqxmd.com/read/29300214/no-effect-of-muscle-stretching-within-a-full-dynamic-warm-up-on-athletic-performance
#8
Anthony J Blazevich, Nicholas D Gill, Thue Kvorning, Anthony D Kay, Alvin Goh, Bradley Hilton, Eric J Drinkwater, David G Behm
PURPOSE: To examine the effects of static and dynamic stretching routines performed as part of a comprehensive warm-up on flexibility and sprint running, jumping and change of direction tests in team sport athletes. METHODS: A randomized, controlled, cross-over study design with experimenter blinding was conducted. On separate days, 20 male team sport athletes completed a comprehensive warm-up routine. After a low-intensity warm-up a 5-s static stretch (5S), 30-s static stretch (30S; 3×10-s stretches), 5-repetition (per muscle group) dynamic stretch (DYN) or no stretch (NS) protocol was completed; stretches were done on 7 lower body and 2 upper body regions...
January 4, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29298672/no-association-between-actn3-r577x-and-ace-i-d-polymorphisms-and-endurance-running-times-in-698-caucasian-athletes
#9
Ioannis D Papadimitriou, Sarah J Lockey, Sarah Voisin, Adam J Herbert, Fleur Garton, Peter J Houweling, Pawel Cieszczyk, Agnieszka Maciejewska-Skrendo, Marek Sawczuk, Myosotis Massidda, Carla Maria Calò, Irina V Astratenkova, Anastasia Kouvatsi, Anastasiya M Druzhevskaya, Macsue Jacques, Ildus I Ahmetov, Georgina K Stebbings, Shane Heffernan, Stephen H Day, Robert Erskine, Charles Pedlar, Courtney Kipps, Kathryn N North, Alun G Williams, Nir Eynon
BACKGROUND: Studies investigating associations between ACTN3 R577X and ACE I/D genotypes and endurance athletic status have been limited by small sample sizes from mixed sport disciplines and lack quantitative measures of performance. AIM: To examine the association between ACTN3 R577X and ACE I/D genotypes and best personal running times in a large homogeneous cohort of endurance runners. METHODS: We collected a total of 1064 personal best 1500, 3000, 5000 m and marathon running times of 698 male and female Caucasian endurance athletes from six countries (Australia, Greece, Italy, Poland, Russia and UK)...
January 3, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29288436/the-relationships-between-internal-and-external-measures-of-training-load-and-intensity-in-team-sports-a-meta-analysis
#10
REVIEW
Shaun J McLaren, Tom W Macpherson, Aaron J Coutts, Christopher Hurst, Iain R Spears, Matthew Weston
BACKGROUND: The associations between internal and external measures of training load and intensity are important in understanding the training process and the validity of specific internal measures. OBJECTIVES: We aimed to provide meta-analytic estimates of the relationships, as determined by a correlation coefficient, between internal and external measures of load and intensity during team-sport training and competition. A further aim was to examine the moderating effects of training mode on these relationships...
December 29, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29286534/fitness-training-for-cardiorespiratory-conditioning-after-traumatic-brain-injury
#11
REVIEW
Leanne Hassett, Anne M Moseley, Alison R Harmer
BACKGROUND: Reduced cardiorespiratory fitness (cardiorespiratory deconditioning) is a common consequence of traumatic brain injury (TBI). Fitness training may be implemented to address this impairment. OBJECTIVES: The primary objective of this updated review was to evaluate whether fitness training improves cardiorespiratory fitness in people who have sustained a TBI. The secondary objectives were to evaluate whether fitness training improves body function and structure (physical and cognitive impairments, psychological responses resulting from the injury), activity limitations and participation restrictions in people who have sustained a TBI as well as to evaluate its safety, acceptance, feasibility and suitability...
December 29, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29283733/the-quantification-of-within-week-session-intensity-duration-and-intensity-distribution-across-a-season-in-australian-football-using-the-session-rpe-method
#12
Farhan Juhari, Dean M Ritchie, Fergus O'Connor, Nathan Pitchford, Matthew Weston, Heidi R Thornton, Jonathan D Bartlett Bartlett
PURPOSE: Team-sports training requires the daily manipulation of intensity, duration and frequency with pre-season focusing on meeting the demands of in-season competition and in-season on maintaining fitness. To provide information about daily training in Australian Football (AF), this study aimed to quantify session intensity, duration, and intensity distribution across different stages of an entire season. METHODS: Intensity (session Ratings of Perceived Exertion [s-RPE]; CR-10 scale) and duration were collected from forty-five professional male AF for every training session and game...
December 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29279574/sports-drink-consumption-and-dental-erosion-among-amateur-runners
#13
Leonardo S Antunes, Lais Veiga, Victor S Nery, Caio C Nery, Lívia A Antunes
This cross-sectional study assessed the prevalence and potential risk factors for dental erosion in amateur athletes at running events. After a sample calculation, 108 runners from the state of Rio de Janeiro, Brazil, were selected and examined for dental wear by a single trained and calibrated evaluator (kappa = 1.00). To identify risk factors, the runners were interviewed by using a standardized, semi-structured questionnaire. The average (SD) age of the runners was 34.2 (11.45), and the prevalence of dental erosion was 19...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/29276543/an-investigation-of-home-advantage-in-the-summer-paralympic-games
#14
Darryl Wilson, Girish Ramchandani
Purpose: There is a paucity of home advantage research set in the context of para-sport events. It is this gap in the knowledge that this paper addresses by investigating the prevalence and size of home advantage in the Summer Paralympic Games. Methods: Using a standardised measure of success, we compared the performances of nations when competing at home with their own performances away from home in the competition between 1960 and 2016. Both country-level and individual sport-level analyses were conducted for this time frame...
2017: Sport Sciences for Health
https://www.readbyqxmd.com/read/29276070/a-piecewise-mass-spring-damper-model-of-the-human-breast
#15
Yiqing Cai, Lihua Chen, Winnie Yu, Jie Zhou, Frances Wan, Minyoung Suh, Daniel Hung-Kay Chow
Previous models to predict breast movement whilst performing physical activities have, erroneously, assumed uniform elasticity within the breast. Consequently, the predicted displacements have not yet been satisfactorily validated. In this study, real time motion capture of the natural vibrations of a breast that followed, after raising and allowing it to fall freely, revealed an obvious difference in the vibration characteristics above and below the static equilibrium position. This implied that the elastic and viscous damping properties of a breast could vary under extension or compression...
December 14, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29251084/further-evidence-for-an-external-focus-of-attention-in-running-looking-at-specific-focus-instructions-and-individual-differences
#16
Antje Hill, Linda Schücker, Norbert Hagemann, Bernd Strauß
Although attentional focusing in sports has been broadly investigated, the findings vary when it comes to endurance sports. This study provides a comparison between relevant foci in the literature of running economy. These include two internal foci-one addressing automated processes (running movement) and the other nonautomated processes (internal body signals and perceived exertion), an external focus (video) and a control condition. Furthermore, we investigated the influence of interoceptive sensitivity on oxygen consumption within the different attention conditions...
December 18, 2017: Journal of Sport & Exercise Psychology
https://www.readbyqxmd.com/read/29250458/comparison-of-psychological-response-between-concussion-and-musculoskeletal-injury-in-collegiate-athletes
#17
Samantha Turner, Jody Langdon, George Shaver, Victoria Graham, Kelly Naugle, Thomas Buckley
The psychological response to musculoskeletal injuries has been well documented, however, research on the psychological response to concussion is limited. The Profile of Mood States (POMS) and the State-Trait Anxiety Inventory (STAI) have recently been used to assess the psychological recovery of concussions. Although some studies indicate that psychological response is different for musculoskeletal injuries and concussion, there is currently not enough information to indicate this difference occurs at specific clinical milestones...
2017: Sport, Exercise, and Performance Psychology
https://www.readbyqxmd.com/read/29248350/effectiveness-of-kinesiology-tape-on-sports-performance-abilities-in-athletes-a-systematic-review
#18
REVIEW
Jennifer C Reneker, Lisa Latham, Ryan McGlawn, Matthew R Reneker
OBJECTIVE: Establish the effectiveness of kinesiology tape (KT) on sports performance abilities compared to that of other tapes or no tape with consideration to the application methodology, timeframe, and outcome measurement. METHODS: PubMed, Embase, and PEDro databases were systematically searched. The following inclusion criteria were applied: 1) participants were healthy athletes, 2) compared any brand of dynamic KT to other types of tape (sham or therapeutic) and/or no tape, 3) measured some construct of functional sports performance, 4) involved randomization...
October 9, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29247962/vulnerability-to-exercise-addiction-socio-demographic-behavioral-and-psychological-characteristics-of-runners-at-risk-for-eating-disorders
#19
Laura Di Lodovico, Caroline Dubertret, Aurely Ameller
BACKGROUND: Excessive exercise is frequently associated with eating disorders and may degenerate into exercise addiction. We still don't know whether runners at risk for eating disorders are at risk for exercise addiction. Our aim is to assess: 1) risk for exercise addiction in runners at risk for eating disorders and 2) socio-demographic, behavioral and psychological characteristics distinguishing runners at-risk from not-at-risk for eating disorders. METHODS: We assessed risk for eating disorders and exercise addiction using the SCOFF questionnaire and the Exercise Addiction Inventory personality traits with the Big-Five Inventory Test, socio-demographic data, eating and training habits in a sample of 154 healthy runners...
November 28, 2017: Comprehensive Psychiatry
https://www.readbyqxmd.com/read/29244693/bilateral-simultaneous-femoral-neck-stress-fracture-despite-clinical-recovery-from-anorexia-nervosa-a-case-report
#20
Jacques Hernigou, Simon Koulischer, Renaud Maes
CASE: A 38-year-old woman who had returned to sports activity (running) after having clinically recovered from anorexia nervosa presented with a bilateral femoral neck stress fracture that was treated with bilateral hip osteosynthesis. CONCLUSION: Although exercise is usually considered to be beneficial for health, heavy exercise (such as running) after recovery from anorexia nervosa may be associated with an increased risk of fracture.
January 2017: JBJS Case Connector
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