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https://www.readbyqxmd.com/read/29228408/-biomechanical-evaluation-of-rehabilitation-after-surgical-repair-of-achilles-tendon-ruptures
#1
Marlene Mauch, Markus Ulrich, Xaver Kaelin, Bernhard Segesser, Jochen Paul
Background Muscles and tendons are subjected to a high level of stress in everyday life and sports. This often leads to injuries and is associated with training failure and reduced performance as well as with high costs for treatment and rehabilitation. Fast and successful treatment is therefore very important, both from an athletic and economic point of view. This study aims to demonstrate the relevance of biomechanical procedures for the objective monitoring of rehabilitation. At the same time, the results are to be used to establish progress and evaluation criteria for an efficient and controlled rehabilitation...
December 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29226349/what-do-we-know-about-coaching-in-medical-education-a-literature-review
#2
REVIEW
Ben Lovell
CONTEXT: Coaching has been employed successfully in the competitive sports, professional music, and business and corporate worlds. It is now emerging as a training modality in medical education. OBJECTIVES: This paper reviews the current evidence on coaching strategies for doctors and medical students. METHODS: An applied literature search was conducted in PubMed, MEDLINE and Web of Science. Predetermined definitions of coaching interventions and their evaluations were used to narrow 993 papers down to 21, which were included in the final review...
December 11, 2017: Medical Education
https://www.readbyqxmd.com/read/29219896/an-analysis-of-training-loads-in-elite-under-18-australian-rule-football-players
#3
Emily E Cust, Nathan Elsworthy, Sam Robertson
Differences in training loads (TL) between under 18 (U18) Australian Rules football (AF) State Academy selected and non-selected players were investigated. Players were categorised relating to their highest representative level; State Academy selected (n = 9) and TAC Cup level players (n = 38). Data were obtained from an online training-monitoring tool implemented to collect player training and match information across a 20 - week period during the regular season. Parameters modelled included AF skills, strength, and other sport training sessions...
December 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29212413/a-lower-extremity-strength-based-profile-of-ncaa-division-i-women-s-basketball-and-gymnastics-athletes-implications-for-knee-joint-injury-risk-assessment
#4
Brennan J Thompson, Curtis S Cazier, Eadric Bressel, Dennis G Dolny
This study aimed to provide a comprehensive strength-based physiological profile of women's NCAA Division I basketball and gymnastic athletes; and to make sport-specific comparisons for various strength characteristics of the knee flexor and extensor muscles. A focus on antagonist muscle balance (hamstrings-to-quadriceps ratios, H:Q) was used to elucidate vulnerabilities in these at-risk female athletes. Fourteen NCAA Division I women's basketball and 13 gymnastics athletes performed strength testing of the knee extensors and flexors...
December 7, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29187349/isokinetic-strength-assessment-offers-limited-predictive-validity-for-detecting-risk-of-future-hamstring-strain-in-sport-a-systematic-review-and-meta-analysis
#5
REVIEW
Brady Green, Matthew N Bourne, Tania Pizzari
OBJECTIVE: To examine the value of isokinetic strength assessment for predicting risk of hamstring strain injury, and to direct future research into hamstring strain injuries. DESIGN: Systematic review. DATA SOURCES: Database searches for Medline, CINAHL, Embase, AMED, AUSPORT, SPORTDiscus, PEDro and Cochrane Library from inception to April 2017. Manual reference checks, ahead-of-press and citation tracking. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Prospective studies evaluating isokinetic hamstrings, quadriceps and hip extensor strength testing as a risk factor for occurrence of hamstring muscle strain...
November 29, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29181249/comparison-of-hamstring-muscle-activation-during-high-speed-running-and-various-hamstring-strengthening-exercises
#6
Roland van den Tillaar, Jens Asmund Brevik Solheim, Jesper Bencke
Purpose/Background: Several studies have examined the effect of hamstring strength exercises upon hamstring strains in team sports that involve many sprints. However, there has been no cross comparison among muscle activation of these hamstring training exercises with actual sprinting. Therefore, the aim of this study was to examine different hamstring exercises and compare the muscle activity in the hamstring muscle group during various exercises with the muscular activity produced during maximal sprints...
October 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29176381/barriers-to-the-prescription-of-psychological-strategies-by-strength-and-conditioning-specialists
#7
Dr Jon N Radcliffe, Dr Paul Comfort, Dr Tom Fawcett
The purpose of this paper was to explore the barriers to strength and conditioning coaches integrating psychological strategies within the strength and conditioning practice. The sample of accredited strength and conditioning coaches comprised 10 subjects working within the UK, 3 within the USA and 5 within Australia offering a cross section of experience from a range sporting disciplines and educational backgrounds. Subjects were interviewed using semi-structured interviews and thematic clustering was employed utilizing interpretative phonological analysis to identify common themes...
November 22, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29174999/effect-of-upper-body-plyometric-training-on-physical-performance-in-healthy-individuals-a-systematic-review
#8
REVIEW
Deepika Singla, M Ejaz Hussain, Jamal Ali Moiz
OBJECTIVE: To determine the impact of upper body plyometric training (UBPT) on physical performance parameters such as strength, ball throwing speed, ball throw distance and power in healthy individuals. METHODS: PubMed, Scopus, ResearchGate and ERIC databases were searched up to August 2017. Selection of articles was done if they described the outcomes of an upper body plyometric exercise intervention; included measures of strength, ball throwing speed, ball throw distance, or power; included healthy individuals; used a randomized control trial; and had full text available in English language...
November 11, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29171284/hamstring-autograft-for-foot-and-ankle-applications
#9
Elizabeth A Cody, Sydney C Karnovsky, Bridget DeSandis, Andrea Tychanski Papson, Jonathan T Deland, Mark C Drakos
BACKGROUND: Hamstring tendon autografts may be used for foot and ankle surgeries, although reports on their effectiveness and morbidity in the foot and ankle literature are limited. We studied a cohort of patients who underwent hamstring harvest for foot and ankle applications, hypothesizing that morbidity to the knee would be limited. METHODS: We studied a cohort of patients who underwent hamstring autograft for foot or ankle applications by a fellowship-trained sports and foot and ankle surgeon since 2011...
November 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29166930/a-prospective-cohort-study-identifying-risk-factors-for-shoulder-injuries-in-adolescent-elite-handball-players-the-karolinska-handball-study-khast-study-protocol
#10
Martin Asker, Markus Waldén, Henrik Källberg, Lena W Holm, Eva Skillgate
BACKGROUND: Handball is a physical contact sport that includes frequent overhead throwing, and this combination leads to a high rate of shoulder injuries. Several factors have been associated with shoulder injuries in overhead athletes, but strong scientific evidence is lacking for most suggested risk factors. We therefore designed the Karolinska Handball Study (KHAST) with the aim to identify risk factors for shoulder injuries in adolescent male and female elite handball players studying at handball-profiled secondary schools in Sweden...
November 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29161335/shoulder-complaints-in-wheelchair-athletes-a-systematic-review
#11
Omar W Heyward, Riemer J K Vegter, Sonja de Groot, Lucas H V van der Woude
BACKGROUND: In recent years the popularity of disabled sports and competition among disabled athletes has grown considerably. With this rise in exposure of, and participation in wheelchair sports comes an increase in related stressors, including musculoskeletal load. External mechanical loading may increase the risk of shoulder complaints. The objective of this literature review was to 1) identify and describe the prevalence and/or incidence of shoulder complaints in wheelchair athletes in the literature, to 2) examine the factors and underlying mechanisms that could be potentially involved, and 3) provide some insights into the development of preventative measures...
2017: PloS One
https://www.readbyqxmd.com/read/29158621/loaded-and-unloaded-jump-performance-of-top-level-volleyball-players-from-different-age-categories
#12
Katia Kitamura, Lucas Adriano Pereira, Ronaldo Kobal, Cesar Cavinato Cal Abad, Ronaldo Finotti, Fábio Yuzo Nakamura, Irineu Loturco
The aim of this study was to investigate the differences in loaded and unloaded jump performances between different age categories of top-level volleyball players from the same club. Forty-three volleyball players were divided into four age groups: under-17, under-19, under-21 and professional. Vertical jumping height for squat jump (SJ), countermovement jump (CMJ) and CMJ with arm swing (CMJa) and mean propulsive velocity (MPV) in the loaded jump squat exercise with 40% of the athlete's body mass were compared among the different age categories, considering body mass as a covariate...
September 2017: Biology of Sport
https://www.readbyqxmd.com/read/29157139/authors-response-to-letter-to-the-editor-bar-velocities-capable-of-optimising-the-muscle-power-in-strength-power-exercises-by-loturco-pereira-abad-tabares-moraes-kobal-kitamura-nakamura-2017
#13
Irineu Loturco
Our study in the Journal of Sports Sciences was originally designed to test whether the bar-velocity is a precise indicator of the power training intensity (i.e., optimum loads) in different exercises commonly included in athletes' training programs. Furthermore, we presented secondary findings, related to the actual results obtained in our assessments. As a cross-sectional study with clear objectives, we focused on discussing issues and applications pertaining to neuromuscular training interventions, such as: (1) describing the advantages of using bar-velocities to control the power training intensity, (2) defining a range of loads capable of maximizing the power production in certain ballistic and traditional exercises, and (3) revealing the differences between these exercises and the respective implications for training...
November 20, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29152521/isokinetic-strength-deficit-6-months-after-adductor-canal-blockade-for-anterior-cruciate-ligament-reconstruction
#14
James E Christensen, Natalie E Taylor, Scott J Hetzel, John A Shepler, Tamara A Scerpella
Background: Recent evidence shows a delayed return to sport in children and delayed quadriceps recovery in both adults and children who have undergone anterior cruciate ligament (ACL) reconstruction with concomitant femoral nerve blockade (FNB) compared with those who had no blockade. We evaluated the use of adductor canal blockade (ACB), as an alternative to FNB, at the time of ACL reconstruction. Hypothesis: Patients who receive ACB will have greater isokinetic strength at 6 months postoperative compared with patients who receive FNB at the time of ACL reconstruction...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29143267/hamstring-injury-prevention-practices-in-elite-sport-evidence-for-eccentric-strength-vs-lumbo-pelvic-training
#15
REVIEW
Anthony J Shield, Matthew N Bourne
Hamstring strain injuries are endemic in running-based sports. Given the economic and performance implications of these injuries, a significant body of research has emerged in recent years in an attempt to identify risk factors and develop or optimise injury prevention strategies. Surveys of injury prevention practices among medical and conditioning staff in elite sport suggest that many sporting clubs invest significant efforts in eccentric hamstring conditioning and lumbo-pelvic or trunk stability programmes...
November 15, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29127759/is-irisin-the-new-player-in-exercise-induced-adaptations-or-not-a-2017-update
#16
REVIEW
Ioannis G Fatouros
Irisin is produced by a proteolytic cleavage of fibronectin type III domain-containing protein 5 (FNDC5) and has emerged as a potential mediator of exercise-induced energy metabolism. The purpose of this study was to review the results of studies that investigated irisin responses to acute and chronic exercise and provide an update. A comprehensive search in the databases of MEDLINE was performed (74 exercise studies). The focus of the analysis was on data concerning FNDC5 mRNA expression in skeletal muscle and circulating irisin concentration relatively to exercise mode, intensity, frequency and duration and the characteristics of the sample used...
November 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29116830/hip-strength-as-a-predictor-of-ankle-sprains-in-male-soccer-players-a-prospective-study
#17
Christopher M Powers, Navid Ghoddosi, Rachel K Straub, Khalil Khayambashi
CONTEXT:   Diminished hip-abductor strength has been suggested to increase the risk of noncontact lateral ankle sprains. OBJECTIVE:   To determine prospectively whether baseline hip-abductor strength predicts future noncontact lateral ankle sprains in competitive male soccer players. DESIGN:   Prospective cohort study. SETTING:   Athletic training facilities and various athletic fields. PATIENTS OR OTHER PARTICIPANTS:   Two hundred ten competitive male soccer players...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29113570/a-novel-downhill-gait-training-program-following-a-total-knee-arthroplasty-a-case-report-highlighting-the-impacts-of-self-selected-speed-on-gait-symmetry
#18
Cody Blue, Sara Coomes, Yuri Yoshida
Study Design Case report. Background Walking plays an essential role in activities of daily living that lead to varied health benefits. Studies report gait speed and symmetry are impacted in individuals following TKA. Unfortunately, abnormal gait patterns persistently exist in individuals after TKA. Downhill walking may provide a simple and feasible exercise regimen to improve gait patterns. The purpose of this case report is to describe the application of a downhill treadmill training program and the subsequent changes in gait patterns in an individual following a unilateral TKA...
November 7, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29112055/self-selected-resistance-exercise-load-implications-for-research-and-prescription
#19
Sebastião Barbosa-Netto, Obanshe S dʼAcelino-E-Porto, Marcos B Almeida
Barbosa-Netto, S, d'Acelino-e-Porto, OS, and Almeida, MB. Self-selected resistance exercise load: implications for research and prescription. J Strength Cond Res XX(X): 000-000, 2017-Resistance training has been widely used for maintaining or improving the quality of life and sports performance. It is not clear, however, whether the load commonly used in these exercises is equivalent to the number of repetitions determined for execution, that is, the level of effort applied to the self-selected load. Ergo, the aim of this study was to identify the number of maximum repetitions that strength training practitioners can perform with the load commonly used (self-selected) to perform 10 repetitions in their training routines...
November 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29112054/lower-extremity-stiffness-considerations-for-testing-performance-enhancement-and-injury-risk
#20
Jon Brazier, Sean Maloney, Chris Bishop, Paul J Read, Anthony N Turner
Brazier, J, Maloney, S, Bishop, C, Read, PJ, and Turner, AN. Lower extremity stiffness: considerations for testing, performance enhancement, and injury risk. J Strength Cond Res XX(X): 000-000, 2017-Force-deformation characteristics of the lower limb have been associated with athletic performance and may modulate the risk of injury. Despite these known associations, measurements of lower extremity stiffness are not commonly administered by strength and conditioning coaches. This review provides an overview of the available literature pertaining to the effects of lower extremity stiffness on physical performance and injury risk...
November 1, 2017: Journal of Strength and Conditioning Research
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