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https://www.readbyqxmd.com/read/28530528/objectifying-tactics-athlete-and-race-variability-in-elite-short-track-speed-skating
#1
Marco J Konings, Florentina J Hettinga
PURPOSE: To objectively capture and understand tactical considerations in a race, we explored whether race-to-race variation of an athlete and the variation of competitors within a race could provide insight into how and when athletes modify their pacing decisions in response to other competitors. METHODS: Lap times of elite 500, 1000 and 1500 m short-track speed skating competitions between 2011-2016 (n=6965 races) were collected. Log-transformed lap and finishing times were analyzed with mixed linear models...
May 22, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28530452/overground-propulsion-kinematics-and-acceleration-in-elite-wheelchair-rugby
#2
David S Haydon, Ross A Pinder, Paul N Grimshaw, William S P Robertson
PURPOSE: Maximal acceleration from standstill has been identified as a key performance indicator in wheelchair rugby; however, the impact of classification and kinematic variables on performance has received limited attention. This study aimed to investigate kinematic variables during maximal acceleration, with level of activity limitation accounted for using sport classification scores. METHODS: 25 elite wheelchair rugby players were analysed in high-, mid-, and low-point groups based on their sporting classification score, which reflects the combined trunk, arm, and hand function, before completing five 5m sprints from a stationary position...
May 22, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28530451/effect-of-high-volume-injection-platelet-rich-plasma-and-sham-treatment-in-chronic-midportion-achilles-tendinopathy-a-randomized-double-blinded-prospective-study
#3
Anders Ploug Boesen, Rudi Hansen, Morten Ilum Boesen, Peter Malliaras, Henning Langberg
BACKGROUND: Injection therapies are often considered alongside exercise for chronic midportion Achilles tendinopathy (AT), although evidence of their efficacy is sparse. PURPOSE: To determine whether eccentric training in combination with high-volume injection (HVI) or platelet-rich plasma (PRP) injections improves outcomes in AT. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: A total of 60 men (age, 18-59 years) with chronic (>3 months) AT were included and followed for 6 months (n = 57)...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28527504/telehealth-in-physical-medicine-and-rehabilitation-a-narrative-review
#4
REVIEW
Adam S Tenforde, Jaye E Hefner, Jodi E Kodish-Wachs, Mary A Iaccarino, Sabrina Paganoni
Telehealth refers to health care interactions that leverage telecommunication devices to provide medical care outside the traditional face-to-face, in-person medical encounter. Technology advances and research have expanded use of telehealth in health care delivery. Physical medicine and rehabilitation providers may use telehealth to deliver care to populations with neurologic and musculoskeletal conditions, commonly treated in both acute care and outpatient settings. Patients with impaired mobility and those living in locations with reduced access to care may particularly benefit...
May 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28526923/focal-articular-prosthetic-resurfacing-for-the-treatment-of-full-thickness-articular-cartilage-defects-in-the-knee-12-year-follow-up-of-two-cases-and-review-of-the-literature
#5
C Becher, E B Cantiller
INTRODUCTION: The rationale of focal articular prosthetic resurfacing used as a primary arthroplasty procedure in the treatment of articular cartilage defects is still under debate. Conflicting reports raise concern about high rates of re-operations and continued development of osteoarthritis, while others have reported good outcomes. The goal of this paper is to present the long-term results of two patients with a 12-year follow-up and to report the results of a literature review. MATERIALS AND METHODS: Two patients (male, 70 years; female 63 years) with a follow-up of 12 years were reviewed...
May 19, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28520677/the-use-of-an-electrophysiological-brain-function-index-in-the-evaluation-of-concussed-athletes
#6
M Alison Brooks, Jeffrey J Bazarian, Leslie S Prichep, Samanwoy Ghosh Dastidar, Thomas M Talavage, William Barr
OBJECTIVE: To evaluate the effectiveness of the electroencephalographic (EEG) Brain Function Index (BFI) for characterizing sports-related concussive injury and recovery. PARTICIPANTS: Three hundred fifty-four (354) male contact sport high school and college athletes were prospectively recruited from multiple locations over 6 academic years of play (244 control baseline athletes and 110 athletes with a concussion). METHODS: Using 5 to 10 minutes of eyes closed resting EEG collected from frontal and frontotemporal regions, a BFI was computed for all subjects and sessions...
May 17, 2017: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/28518085/analysis-of-chromosome-segregation-histone-acetylation-and-spindle-morphology-in-horse-oocytes
#7
Federica Franciosi, Irene Tessaro, Rozenn Dalbies-Tran, Cecile Douet, Fabrice Reigner, Stefan Deleuze, Pascal Papillier, Ileana Miclea, Valentina Lodde, Alberto M Luciano, Ghylene Goudet
The field of assisted reproduction has been developed to treat infertility in women, companion animals, and endangered species. In the horse, assisted reproduction also allows for the production of embryos from high performers without interrupting their sports career and contributes to an increase in the number of foals from mares of high genetic value. The present manuscript describes the procedures used for collecting immature and mature oocytes from horse ovaries using ovum pick-up (OPU). These oocytes were then used to investigate the incidence of aneuploidy by adapting a protocol previously developed in mice...
May 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28515981/a-six-week-supervised-exercise-and-educational-intervention-after-total-hip-arthroplasty-a-case-series
#8
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/28515975/prospective-functional-performance-testing-and-relationship-to-lower-extremity-injury-incidence-in-adolescent-sports-participants
#9
Joseph Smith, Nick DePhillipo, Iris Kimura, Morgan Kocher, Ronald Hetzler
BACKGROUND: Due to the high number of adolescent athletes and subsequent lower extremity injuries, improvements of injury prevention strategies with emphasis on clinic-based and practical assessments are warranted. PURPOSE: The purpose of this study was to prospectively investigate if a battery of functional performance tests (FPT) could be used as a preseason-screening tool to identify adolescent athletes at risk for sports-related acute lower extremity injury via comparison of injured and uninjured subjects...
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
#10
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/28513280/application-of-acoustic-radiation-force-impulse-arfi-elastography-in-imaging-of-delayed-onset-muscle-soreness-doms-a-comparative-analysis-with-3t-mri
#11
Thilo Hotfiel, Marion Kellermann, Bernd Swoboda, Dane Wildner, Tobias Golditz, Casper Grim, Martin Raithel, Michael Uder, Rafael Heiss
CONTEXT: DOMS is one of the most common reasons for impaired muscle performance in sports and is associated with reduced muscle strength and frequently observed both in professional and recreational athletes. OBJECTIVE: To emphasize the diagnostic value of Acoustic Radiation Force Impulse (ARFI) in imaging of Delayed Onset Muscle Soreness by comparing findings to high-resolution 3T MRI T2 weighted sequences. DESIGN: Case series. SETTING: Laboratory environment...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28508705/physical-demands-of-game-based-training-drills-in-women-s-team-handball
#12
Live S Luteberget, Hege P Trollerud, Matt Spencer
Game-based training drills are popular in team sports. This study compared two game-based training conditions and official matches in team handball. Thirty-one women players wore inertial measurement units in five training sessions and five official matches. In training, 3vs3 and 6vs6 game-based training conditions were performed with a 5-min duration. PlayerLoad™ and high-intensity events (HIEs; >2.5 m · s(-1)) were extracted from the raw data. Data were analysed using magnitude-based inferences and reported with effect sizes (ESs)...
May 16, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28508338/fluid-balance-in-team-sport-athletes-and-the-effect-of-hypohydration-on-cognitive-technical-and-physical-performance
#13
REVIEW
Ryan P Nuccio, Kelly A Barnes, James M Carter, Lindsay B Baker
Sweat losses in team sports can be significant due to repeated bursts of high-intensity activity, as well as the large body size of athletes, equipment and uniform requirements, and environmental heat stress often present during training and competition. In this paper we aimed to: (1) describe sweat losses and fluid balance changes reported in team sport athletes, (2) review the literature assessing the impact of hypohydration on cognitive, technical, and physical performance in sports-specific studies, (3) briefly review the potential mechanisms by which hypohydration may impact team sport performance, and (4) discuss considerations for future directions...
May 15, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28507165/reliability-and-validity-of-an-agility-like-incremental-exercise-test-with-multidirectional-change-of-direction-movements-in-response-to-a-visual-stimulus
#14
Dennis-Peter Born, Philipp Kunz, Billy Sperlich
The aim of the study was to evaluate the reliability and validity of cardiorespiratory and metabolic variables, that is, peak oxygen uptake (V'O2peak) and heart rate (HRpeak), obtained from an agility-like incremental exercise test for team sport athletes. To investigate the test-retest reliability, 25 team sport athletes (age: 22 ± 3 years, body mass: 75 ± 7 kg, height: 182 ± 6 cm) performed an agility-like incremental exercise test on the SpeedCourt (SC) system incorporating multidirectional change-of-direction (COD) movements twice...
May 2017: Physiological Reports
https://www.readbyqxmd.com/read/28503540/comparisons-of-incidence-of-spinal-and-lower-extremity-deformities-according-to-the-physical-characteristics-between-sports-major-and-nonmajor-college-students
#15
Jangwon Lee
This research was performed to identify the incidence of spinal and lower extremity deformity and to identify the relationship of the incidence between the physical characteristics. One hundred forty-seven Physical Education major students and 54 nonmajor students participated in this study. Data collecting was performed by questionnaire and visual postural evaluation. The incidences of genu varus (P<0.00001), genu recurvatum (P=0.0007), forward head (P<0.00001), lordosis (P<0.00001), and scoliosis (P=0...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28501221/return-to-sport-and-clinical-outcomes-after-hip-arthroscopic-labral-repair-in-young-amateur-athletes-minimum-2-year-follow-up
#16
Rohith Mohan, Nick R Johnson, Mario Hevesi, Christopher M Gibbs, Bruce A Levy, Aaron J Krych
PURPOSE: To determine the rate of return of young amateur athletes to sport after hip arthroscopy, their clinical outcomes, and pathologic risk factors for worse outcomes 2 years after surgery. METHODS: This study included all patients between age 13 and 23 who participated in a sport prior to surgery with intent to return who underwent hip arthroscopy after failure of comprehensive nonoperative management for whom 2-year outcome scores were available. Outcomes collected retrospectively included modified Harris Hip Score (mHHS) and the Hip Outcome Scores (HOS) subscales for activities of daily living (ADL) and sport (HOS Sport)...
May 10, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28497248/-aseptic-loosening-of-total-ankle-replacement-one-stage-revision-ankle-arthroplasty
#17
G Pagenstert, M D Wimmer, M Jacxsens, C L Saltzman, A Barg
OBJECTIVE: To revise one or both loosened prosthesis components, to achieve postoperative pain relief, and preserve ankle range of motion. INDICATIONS: Aseptic loosening of the tibial and/or talar ankle prosthesis components without substantial bone defect of the tibial or talar bone stock. CONTRAINDICATIONS: General surgical or anesthesiological risks, infections, critical soft tissue conditions, nonmanageable hindfoot instability, neurovascular impairment of the lower extremity, neuroarthropathy (e...
May 11, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28493064/evidence-based-prerequisites-and-precursors-of-athletic-talent-a-review
#18
REVIEW
Vladimir B Issurin
Extensive findings related to nature and nurture in determining athletic talent (AT) have been reviewed. Available data demonstrate the important contribution of hereditary factors as well as the crucial importance of environmental prerequisites for identifying and developing AT. Recent publications provide examples of contemporary approaches intended to solve the problem of how to discover and nurture AT. A number of cross-sectional and longitudinal studies highlighted possibilities of revealing a predisposition to certain sports among youthful prospects, but were unable to predict attainment of world-class status...
May 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28490195/the-takei-handheld-dynamometer-an-effective-clinical-outcome-measure-tool-for-hand-and-wrist-function-in-boxing
#19
Ian Gatt, Sophie Smith-Moore, Charlie Steggles, Mike Loosemore
BACKGROUND: The aim of this article was to explore retrospectively the Takei dynamometer as a valid and reliable outcome measure tool for hand and wrist pathology in the Great Britain amateur boxing squad between 2010 and 2014. METHODS: Longitudinal retrospective injury surveillance of the Great Britain boxing squad was performed from 2010 to 2014. The location, region affected, description, and duration of each injury were recorded by the team doctor and team physiotherapists...
May 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28488907/prediction-the-modern-day-sports-science-medicine-quest-for-the-holy-grail
#20
Alan McCall, Maurizio Fanchini, Aaron J Coutts
In high performance sport, science and medicine practitioners employ a variety of physical and psychological tests, training/match monitoring and injury screening tools for a variety of reasons; mainly to predict performance, identify talented individuals and flag when an injury will occur. The ability to 'predict' outcomes such as performance, talent or injury is arguably the sports science/medicine modern day equivalent of the 'Quest for the Holy Grail'. The purpose of this invited commentary is to 1) highlight the common misinterpretation of studies investigating association to those actually analysing prediction and 2) provide practitioners with simple recommendations to quickly distinguish between methods pertaining to association and those of prediction...
May 10, 2017: International Journal of Sports Physiology and Performance
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