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https://www.readbyqxmd.com/read/28937917/head-impact-exposure-measured-in-a-single-youth-football-team-during-practice-drills
#1
Mireille E Kelley, Joeline M Kane, Mark A Espeland, Logan E Miller, Alexander K Powers, Joel D Stitzel, Jillian E Urban
OBJECTIVE This study evaluated the frequency, magnitude, and location of head impacts in practice drills within a youth football team to determine how head impact exposure varies among different types of drills. METHODS On-field head impact data were collected from athletes participating in a youth football team for a single season. Each athlete wore a helmet instrumented with a Head Impact Telemetry (HIT) System head acceleration measurement device during all preseason, regular season, and playoff practices...
September 12, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28937801/clinical-implications-of-hand-position-and-lower-limb-length-measurement-method-on-y-balance-test-scores-and-interpretation
#2
Kim Hébert-Losier
CONTEXT:   The Lower Quarter Y-Balance Test (LQ-YBT) was developed to provide an effective and efficient screen for injury risk in sports. Earlier protocol recommendations for the LQ-YBT involved the athlete placing the hands on the hips and the clinician normalizing scores to lower limb length measured from the anterior-superior iliac spine to the lateral malleolus. The updated LQ-YBT protocol recommends the athlete's hands be free moving and the clinician measure lower limb length to the medial malleolus...
September 22, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28937790/the-doctor-of-philosophy-experience-of-athletic-trainers-facilitators-and-barriers-to-anticipatory-faculty-socialization
#3
Thomas Bowman, Joanne Klossner, Stephanie Mazerolle
CONTEXT:   It is important to understand the process whereby athletic trainers learn about their future roles, particularly when the roles can be complex and demanding. Little is known about the experiences of athletic training doctoral students, including facilitators and barriers to socialization as aspiring faculty members. OBJECTIVE:   To investigate factors influencing the anticipatory socialization of athletic training doctoral students into future faculty roles...
September 22, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28937785/gaining-access-to-providing-medical-care-to-male-sport-teams-the-female-athletic-trainer-perspective
#4
Alicia Pike, Stephanie M Mazerolle, Jessica L Barrett
CONTEXT:   Female athletic trainers (ATs) can face barriers to employment within the profession. Although there is evidence for an increasing percentage of women in athletic training, the portion providing medical care to male sport teams within the professional sport and collegiate settings continues to be small. OBJECTIVE:   To investigate the experiences of female ATs when seeking employment with male sport teams within the Division I setting. DESIGN:   Qualitative study...
September 22, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28937782/cold-water-immersion-cooling-rates-in-football-linemen-and-cross-country-runners-with-exercise-induced-hyperthermia
#5
Sandra Fowkes Godek, Katherine E Morrison, Gregory Scullin
CONTEXT:   Ideal and acceptable cooling rates in hyperthermic athletes have been established in average-sized participants. Football linemen (FBs) have a small body surface area (BSA) to mass ratio compared with smaller athletes, which hinders heat dissipation. OBJECTIVE:   To determine cooling rates using cold-water immersion in hyperthermic FBs and cross-country runners (CCs). DESIGN:   Cohort study. SETTING:   Controlled university laboratory...
September 22, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28935680/cardiac-events-during-competitive-recreational-and-daily-activities-in-children-and-adolescents-with-long-qt-syndrome
#6
Kristina D Chambers, Virginie Beausejour Ladouceur, Mark E Alexander, Robyn J Hylind, Laura Bevilacqua, Douglas Y Mah, Vassilios Bezzerides, John K Triedman, Edward P Walsh, Dominic J Abrams
BACKGROUND: The 2005 Bethesda Conference Guidelines advise patients with long QT syndrome against competitive sports. We assessed cardiac event rates during competitive and recreational sports, and daily activities among treated long QT syndrome patients. METHODS AND RESULTS: Long QT syndrome patients aged ≥4 years treated with anti-adrenergic therapy were included. Demographics included mechanism of presentation, corrected QT interval pretreatment, symptom history, medication compliance, and administration of QT-prolonging medications...
September 21, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28934100/differences-in-the-movement-skills-and-physical-qualities-of-elite-senior-academy-rugby-league-players
#7
Matthew R E Ireton, Kevin Till, Dan Weaving, Ben Jones
The aim of the present study was to investigate (a) the differences in the movement skills and physical qualities between academy and senior rugby league players, and (b) the relationships between movement skills and physical qualities. Fifty-five male rugby league players (Senior, n=18; Under 19 n=23; Under 16, n=14) undertook a physical testing battery including anthropometric (stature & body mass), strength (isometric mid-thigh pull; IMTP) and power (countermovement jump; CMJ) qualities, alongside the athletic ability assessment (AAA; comprised of overhead squat, double lunge, single-leg Romanian deadlift, press-up and pull-up exercises)...
June 2, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28933715/rating-of-perceived-exertion-for-quantification-of-training-and-combat-loads-during-combat-sport-specific-activities-a-short-review
#8
Maamer Slimani, Philip Davis, Emerson Franchini, Wassim Moalla
Slimani, M, Davis, P, Franchini, E, and Moalla, W. Rating of perceived exertion for quantification of training and combat loads during combat sport-specific activities: a short review. J Strength Cond Res 31(10): 2889-2902, 2017-The aim of this short review was to summarize data pertaining to the rating of perceived exertion (RPE) methods (RPE value and session-RPE) during combat sport-specific activities (i.e., competition and training) based on many factors, including contest type (i.e., official vs. simulated vs...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28933713/adaptations-associated-with-an-after-school-strength-and-conditioning-program-in-middle-school-aged-boys-a-quasi-experimental-design
#9
Brennan J Thompson, Matt S Stock, Jacob A Mota, Alexander S Drusch, Ryan N DeFranco, Tyler R Cook, Matthew A Hamm
Thompson, BJ, Stock, MS, Mota, JA, Drusch, AS, DeFranco, RN, Cook, TR, and Hamm, MA. Adaptations associated with an after-school strength and conditioning program in middle-school aged boys: a quasi-experimental design. J Strength Cond Res 31(10): 2840-2851, 2017-High-intensity strength and conditioning programs aimed at improving youth performance are becoming increasingly prevalent. The purpose of this study was to investigate the effects of a 16-week after-school strength and conditioning program on performance and body composition in middle-school-aged boys...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28933711/the-effect-of-hip-joint-angle-on-isometric-midthigh-pull-kinetics
#10
Thomas DosʼSantos, Christopher Thomas, Paul A Jones, John J McMahon, Paul Comfort
Dos'Santos, T, Thomas, C, Jones, PA, McMahon, JJ, and Comfort, P. The effect of hip joint angle on isometric midthigh pull kinetics. J Strength Cond Res 31(10): 2748-2757, 2017-The aim of this study were to compare isometric midthigh pull (IMTP) peak force (PF), time-specific force values (100-, 150-, and 200 ms), rate of force development (RFD) at predetermined time bands (0-100, 0-150, and 0-200 ms) and net forces between 2 commonly adopted hip joint angles (145°[hip145] and 175°[hip175]) with a 145° standardized knee angle...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28932751/return-to-sports-and-recurrences-after-arthroscopic-anterior-shoulder-stabilization-in-martial-arts-athletes
#11
Maximiliano Ranalletta, Luciano A Rossi, Adrian Sirio, Fernando Diaz Dilernia, Agustin Bertona, Gastón D Maignon, Santiago L Bongiovanni
BACKGROUND: The high demands to the glenohumeral joint and the violent shoulder blows experienced during martial arts (MA) could compromise return to sports and increase the recurrence rate after arthroscopic stabilization for anterior shoulder instability in these athletes. PURPOSE: To report the functional outcomes, return to sports, and recurrences in a series of MA athletes with anterior shoulder instability treated with arthroscopic stabilization with suture anchors...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28931992/knee-injury-and-osteoarthritis-outcome-score-of-korean-national-ice-hockey-players
#12
Hyeyoung Kim, Sujin Hwang, Byoung-Hee Lee
[Purpose] To investigate sports injuries in Korean national ice hockey players by surveying parts, times, types, frequency, cure, and prevention types of sports injuries and provide basic data for injury prevention and performance improvement of ice hockey players. Another purpose of this study was to evaluate the incidence of ice hockey injuries according to age and the relationship between etiological factors and injuries in high school students. [Subjects and Methods] This was a cross-sectional study. Eighteen female ice hockey players in Korean elite athletes were recruited for this study...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28930880/cycling-power-outputs-predict-functional-threshold-power-and-maximum-oxygen-uptake
#13
Joshua Denham, John Scott-Hamilton, Amanda D Hagstrom, Adrian J Gray
Functional threshold power (FTP) has emerged as a correlate of lactate threshold and is commonly assessed by recreational and professional cyclists for tailored exercise programing. To identify whether results from traditional aerobic and anaerobic cycling tests could predict FTP and V˙ O2max, we analysed the association between estimated FTP, maximum oxygen uptake (V˙ O2max [mlkgmin]) and power outputs obtained from a maximal cycle ergometry cardiopulmonary exercise test (CPET) and a 30-s Wingate test in a heterogeneous cohort of cycle-trained and untrained individuals (N=40, mean±SD; age: 32...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28930879/repeat-effort-performance-is-reduced-24-h-following-acute-dehydration-in-mixed-martial-arts-athletes
#14
Oliver R Barley, Fiona Iredale, Dale W Chapman, Amanda Hopper, Chris Abbiss
This study sought to determine the influence of acute dehydration on physical performance and physiology in Mixed Martial Arts (MMA). MMA athletes (n=14; age: 23±4 years), completed in a randomised counterbalanced order a dehydration protocol, (DHY: 3 h cycling at 60 W in 40°C to induce 5% dehydration) or thermoneutral control (25°C: CONT) exercise, followed by ad libitum fluid/food intake. Performance testing (a repeat sled push test, medicine ball chest throw and vertical jump) was completed 3 and 24 h following the intervention, while urine and blood samples were collected before, 20 min, 3 and 24 h following the intervention...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28928069/comments-on-the-new-international-criteria-for-electrocardiographic-interpretation-in-athletes
#15
Luis Serratosa-Fernández, Domingo Pascual-Figal, María Dolores Masiá-Mondéjar, María Sanz-de la Garza, Zigor Madaria-Marijuan, Juan Ramón Gimeno-Blanes, Carmen Adamuz
Sudden cardiac death is the most common medical cause of death during the practice of sports. Several structural and electrical cardiac conditions are associated with sudden cardiac death in athletes, most of them showing abnormal findings on resting electrocardiogram (ECG). However, because of the similarity between some ECG findings associated with physiological adaptations to exercise training and those of certain cardiac conditions, ECG interpretation in athletes is often challenging. Other factors related to ECG findings are race, age, sex, sports discipline, training intensity, and athletic background...
September 16, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28927669/are-the-hamstrings-from-the-drive-leg-or-landing-leg-more-active-in-baseball-pitchers-an-electromyographic-study
#16
Brandon J Erickson, Antonia Zaferiou, Peter N Chalmers, Deana Ruby, Phillip Malloy, Timothy J Luchetti, Nikhil N Verma, Anthony A Romeo
BACKGROUND: Ulnar collateral ligament reconstruction (UCLR) has become a common procedure among baseball players of all levels. There are several graft choices in performing UCLR, one of which is a hamstring (gracilis or semitendinosus) autograft. It is unclear whether the hamstring muscle from a pitcher's drive leg (ipsilateral side of the UCLR) or landing leg (contralateral side of the UCLR) is more active during the pitching motion. We hypothesized that the landing leg semitendinosus will be more electromyographically active than the drive leg...
September 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28922211/acute-effects-of-ammonia-inhalants-on-strength-and-power-performance-in-trained-men
#17
Sandro Bartolomei, Federico Nigro, Gubellini Luca, Semprini Gabriele, Simone Ciacci, Jay R Hoffman, Franco Merni
The aim of the present study was to investigate the influence of ammonia inhalants on lower body power and maximal isometric strength in trained men. Twenty experienced resistance trained men (age = 26.7 ± 3.7 y; body weight = 80.59 ± 9.0 kg; body height = 179.5 ± 5.7 cm) were tested for counter movement jump power (CMJP), maximal force and rate of force development (pRFD20) expressed during an isometric mid-thigh pull (IMTP). Assessments were performed using either an ammonia salt inhalants (AI), a placebo (PL) or no inhalants (N)...
September 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28921722/interactive-effects-of-music-tempi-and-intensities-on-grip-strength-and-subjective-affect
#18
Costas I Karageorghis, Peter Cheek, Stuart D Simpson, Marcelo Bigliassi
Pretask music is widely used by athletes albeit there is scant empirical evidence to support its use. The present study extended a line of work into pretask music by examining the interactive effects of music tempo and intensity (volume) on the performance of a simple motor skill and subjective affect. A 2 × 2 within-subjects factorial design was employed with an additional no-music control, the scores from which were used as a covariate. A sample of 52 male athletes (age = 26.1 ± 4.8 years) was exposed to five conditions: fast/loud (126 bpm/80 dBA), fast/quiet (126 bpm/70 dBA), slow/loud (87 bpm/80 dBA), slow/quiet (87 bpm/70 dBA) music, and a no-music control...
September 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28919121/the-utility-of-instrumented-dual-task-gait-and-tablet-based-neurocognitive-measurements-after-concussion
#19
David R Howell, Alexandra Stillman, Thomas A Buckley, Brant Berkstresser, Francis Wang, William P Meehan
OBJECTIVES: Quantitative and non-invasive measurements acquired by neurocognitive or gait evaluations are useful concussion management components. Emerging technology has allowed for the development of portable and objective tests which may be potentially useful across many settings where evaluations take place. Our aim was to examine the association between instrumented dual-task gait and tablet-based neurocognitive outcome variables with an acute concussion. DESIGN: A total of 59 collegiate athletes were identified and tested within 5days of concussion (n=18, 50% female, 20±1years of age) or as a part of a baseline examination (n=41, 29% female, 19±1years of age)...
August 16, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28918649/characterizing-verified-head-impacts-in-high-school-girls-lacrosse
#20
Shane V Caswell, Andrew E Lincoln, Hannah Stone, Patricia Kelshaw, Margot Putukian, Lisa Hepburn, Michael Higgins, Nelson Cortes
BACKGROUND: Girls' high school lacrosse players have higher rates of head and facial injuries than boys. Research indicates that these injuries are caused by stick, player, and ball contacts. Yet, no studies have characterized head impacts in girls' high school lacrosse. PURPOSE: To characterize girls' high school lacrosse game-related impacts by frequency, magnitude, mechanism, player position, and game situation. STUDY DESIGN: Descriptive epidemiology study...
September 1, 2017: American Journal of Sports Medicine
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