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https://www.readbyqxmd.com/read/29683915/organized-chaos-in-late-specialization-team-sports-weekly-training-loads-of-elite-adolescent-rugby-union-players
#1
Padraic J Phibbs, Ben Jones, Gregory Roe, Dale B Read, Joshua Darrall-Jones, Jonathon Weakley, Andrew Rock, Kevin Till
Phibbs, PJ, Jones, B, Roe, G, Read, DB, Darrall-Jones, J, Weakley, J, Rock, A, and Till, K. Organized chaos in late specialization team sports: weekly training loads of elite adolescent rugby union players. J Strength Cond Res 32(5): 1316-1323, 2018-The aim of this study was to quantify the mean weekly training load (TL) of elite adolescent rugby union players participating in multiple teams and examine the differences between playing positions. Twenty elite male adolescent rugby union players (17.4 ± 0.7 years) were recruited from a regional academy and categorized by playing position: forwards (n = 10) and backs (n = 10)...
May 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29659401/effects-of-different-footwear-properties-and-surface-instability-on-neuromuscular-activity-and-kinematics-during-jumping
#2
Melanie Lesinski, Olaf Prieske, Ron Borde, Rainer Beurskens, Urs Granacher
Lesinski, M, Prieske, O, Borde, R, Beurskens, R, and Granacher, U. Effects of different footwear properties and surface instability on neuromuscular activity and kinematics during jumping. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to examine sex-specific effects of different footwear properties vs. barefoot condition during the performance of drop jumps (DJs) on stable and unstable surfaces on measures of jump performance, electromyographic (EMG) activity, and knee joint kinematics...
April 13, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29607462/injury-prevalence-across-sports-a-descriptive-analysis-on-a-representative-sample-of-the-danish-population
#3
A M Bueno, M Pilgaard, A Hulme, P Forsberg, D Ramskov, C Damsted, R O Nielsen
BACKGROUND: Physical activity plays an important role in public health, owing to a range of health-related benefits that it provides. Sports-related injuries are known to be an important barrier to continued physical activity. Still, the prevalence of injuries on a general population level has not yet been explored in a descriptive epidemiological investigation. The purpose of the questionnaire-based study, therefore, was to describe the prevalence of injury in a representative sample of the Danish population...
April 2, 2018: Injury Epidemiology
https://www.readbyqxmd.com/read/29601383/is-platelet-rich-plasma-injection-effective-for-chronic-achilles-tendinopathy-a-meta-analysis
#4
Yi-Jun Zhang, San-Zhong Xu, Peng-Cheng Gu, Jing-Yu Du, You-Zhi Cai, Chi Zhang, Xiang-Jin Lin
BACKGROUND: Chronic Achilles tendinopathy is common in the general population, and platelet-rich plasma (PRP) is seeing increased use to treat this problem. However, studies disagree as to whether PRP confers a beneficial effect for chronic Achilles tendinopathy, and no one to our knowledge has pooled the available randomized trials in a formal meta-analysis to try to reconcile those differences. QUESTIONS/PURPOSES: In the setting of a systematic review and meta-analysis of randomized controlled trials (RCTs), we asked: Does PRP plus eccentric strength training result in (1) greater improvements in Victorian Institute of Sports Assessment-Achilles (VISA-A) scores; (2) differences in tendon thickness; or (3) differences in color Doppler activity compared with placebo (saline) injections plus eccentric strength training in patients with chronic Achilles tendinopathy? METHODS: A search of peer-reviewed articles was conducted to identify all RCTs using PRP injection with eccentric training for chronic Achilles tendinopathy in the electronic databases of PubMed, Web of Science (SCI-E/SSCI/A&HCI), and EMBASE from January 1981 to August 2017...
March 28, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29594958/change-of-direction-speed-toward-a-strength-training-approach-with-accentuated-eccentric-muscle-actions
#5
Helmi Chaabene, Olaf Prieske, Yassine Negra, Urs Granacher
There is growing evidence that eccentric strength training appears to have benefits over traditional strength training (i.e., strength training with combined concentric and eccentric muscle actions) from muscular, neuromuscular, tendinous, and metabolic perspectives. Eccentric muscle strength is particularly needed to decelerate and stabilize the body during the braking phase of a jump exercise or during rapid changes of direction (CoD) tasks. However, surprisingly little research has been conducted to elucidate the effects of eccentric strength training or strength training with accentuated eccentric muscle actions on CoD speed performance...
March 28, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29581893/effect-of-indoor-wheelchair-curling-training-on-trunk-control-of-person-with-chronic-spinal-cord-injury-a-randomised-controlled-trial
#6
Tanja Herzog, Jaap Swanenburg, Markus Hupp, Anne-Gabrielle Mittaz Hager
Study design: Randomised, controlled, single-blind crossover design study. Objective: Effect of indoor wheelchair curling training on trunk control of a person with chronic spinal cord injury (SCI). Setting: SCI Centre of Balgrist University Hospital in Zurich, Switzerland. Methods: The trunk control of 13 subjects was assessed by the modified functional reach test (MFRT) and nonlinear dynamic systems analysis (NDSA) before and after eight indoor curling training sessions and compared to everyday life over 4 weeks...
2018: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/29575090/gait-mechanics-and-tibiofemoral-loading-in-men-of-the-acl-sports-randomized-control-trial
#7
Jacob J Capin, Ashutosh Khandha, Ryan Zarzycki, Amelia J H Arundale, Melissa L Ziegler, Kurt Manal, Thomas S Buchanan, Lynn Snyder-Mackler
The risk for post-traumatic osteoarthritis is elevated after anterior cruciate ligament reconstruction (ACLR), and may be especially high among individuals with aberrant walking mechanics, such as medial tibiofemoral joint underloading 6 months postoperatively. Rehabilitation training programs have been proposed as one strategy to address aberrant gait mechanics. We developed the anterior cruciate ligament specialized post-operative return-to-sports (ACL-SPORTS) randomized control trial to test the effect of 10 post-operative training sessions consisting of strength, agility, plyometric, and secondary prevention exercises (SAPP) or SAPP plus perturbation (SAPP + PERT) training on gait mechanics after ACLR...
March 25, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29574547/hip-capsular-thickness-correlates-with-range-of-motion-limitations-in-femoroacetabular-impingement
#8
Kailai Zhang, Darren de Sa, Hang Yu, Hema Nalini Choudur, Nicole Simunovic, Olufemi Rolland Ayeni
PURPOSE: Femoroacetabular impingement (FAI) is a clinical entity of the hip causing derangements in range of motion, pain, gait, and function. Computer-assisted modeling and clinical studies suggest that patients with FAI have increased capsular thickness compared to those without.A retrospective chart review was performed to assess relationships between capsular thickness, hip range of motion, and demographic factors in patients with FAI. METHODS: Local Research Ethics Board approval was obtained to extract electronic medical records for 188 patients at a single institution who had undergone hip arthroscopy...
March 24, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29570599/increased-leg-bone-mineral-density-and-content-during-the-initial-years-of-college-sport
#9
John J Scerpella, Bjoern Buehring, Scott J Hetzel, Bryan C Heiderscheit
Scerpella, JJ, Buehring, B, Hetzel, SJ, and Heiderscheit, BC. Increased leg bone mineral density and content during the initial years of college sport. J Strength Cond Res 32(4): 1123-1130, 2018-Bone mineral density (BMD) and bone mineral content (BMC) data are useful parameters for evaluating how training practices promote bone health. We used dual-energy X-ray absorptiometry (DXA) to longitudinally assess sport-specific growth in leg and total body BMD/BMC over the initial 2 years of collegiate training. Eighty-five Division 1 collegiate basketball, hockey, and soccer athletes (50 males and 35 females; age 19...
April 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29568244/herbal-medicine-for-sports-a-review
#10
REVIEW
Maha Sellami, Olfa Slimeni, Andrzej Pokrywka, Goran Kuvačić, Lawrence D Hayes, Mirjana Milic, Johnny Padulo
The use of herbal medicinal products and supplements has increased during last decades. At present, some herbs are used to enhance muscle strength and body mass. Emergent evidence suggests that the health benefits from plants are attributed to their bioactive compounds such as Polyphenols, Terpenoids, and Alkaloids which have several physiological effects on the human body. At times, manufacturers launch numerous products with banned ingredient inside with inappropriate amounts or fake supplement inducing harmful side effect...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29557889/feasibility-and-effect-of-cervical-resistance-training-on-head-kinematics-in-youth-athletes-a-pilot-study
#11
James T Eckner, Alireza Goshtasbi, Kayla Curtis, Aliaksandra Kapshai, Erik Myyra, Lea M Franco, Michael Favre, Jon A Jacobson, James A Ashton-Miller
Greater neck girth and strength may be associated with a lower risk of sport-related concussion due to mitigation of head accelerations by the neck. However, neck strengthening exercise remains unstudied in youth athletes. Therefore, this pilot study assessed the feasibility and effect of targeted neck strengthening exercises in youth athletes. Seventeen participants were allocated to perform 8-wk manual resistance-based neck strengthening (n = 13) or control resistance exercise (n = 4) programs. Before and after the intervention, participants completed laboratory-based assessments of neck size, strength, and head kinematics during standardized test loading in each plane of motion...
April 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29553289/long-term-effect-of-exercise-training-in-patients-after-transcatheter-aortic-valve-implantation-follow-up-of-the-sport-tavi-randomised-pilot-study
#12
Axel Pressler, Leonie Förschner, Jana Hummel, Bernhard Haller, Jeffrey W Christle, Martin Halle
Background Increased exercise capacity favourably influences clinical outcomes after transcatheter aortic valve implantation. In our SPORT:TAVI randomised pilot trial, eight weeks of endurance and resistance training (training group, TG) shortly after transcatheter aortic valve implantation resulted in significantly improved exercise capacity, muscular strength and quality of life compared to usual care (UC). However, the long-term clinical benefits of such an intervention are unknown. Design A randomised controlled trial...
January 1, 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29548270/reduced-hip-adduction-is-associated-with-improved-function-after-movement-pattern-training-in-young-people-with-chronic-hip-joint-pain
#13
Marcie Harris-Hayes, Karen Steger-May, Linda R Van Dillen, Mario Schootman, Gretchen B Salsich, Sylvia Czuppon, John C Clohisy, Paul K Commean, Travis J Hillen, Shirley A Sahrmann, Michael J Mueller
Study Design Ancillary analysis, time-controlled randomized clinical trial. Background Movement pattern training (MPT) has been shown to improve function among patients with chronic hip joint pain (CHJP). Objective Determine the association among treatment outcomes and mechanical factors associated with CHJP. Methods Twenty-eight patients with CHJP, 18-40 years, participated in MPT, either immediately after assessment or after a wait-list period. MPT included task-specific training to reduce hip adduction motion during functional tasks and hip muscle strengthening...
March 16, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29543920/the-relationship-between-ca-repeat-polymorphism-of-the-igf-1-gene-and-the-structure-of-motor-skills-in-young-athletes
#14
Krzysztof Karpowicz, Katarzyna Krych, Małgorzata Karpowicz, Witold Nowak, Piotr Gronek
The map of candidate genes that can potentially affect physical fitness becomes larger every year, and they are associated with such aspects as respiratory and cardiovascular stability; body build and composition - especially muscle mass and strength; carbohydrate and lipid metabolism; response to training; and exercise intolerance.The aim of this study was to analyze the relationship between the CA repeat polymorphism of the P1 promoter of the IGF1 gene and the structure of motor skills in the two groups of Polish young athletes in 2011-2013...
March 15, 2018: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/29541137/the-improvement-of-suspension-training-for-trunk-muscle-power-in-sanda-athletes
#15
Xiujie Ma, Wei Sun, An Lu, Pei Ma, Chuanyin Jiang
The aim of this study was to investigate whether both suspension training (ST) and traditional training (TT) can improve Sanda athlete's strength quality of trunk muscles and to explore the effect of suspension training on Sanda athletes' trunk muscle power production. Twelve elite Sanda athletes from the Competitive Sports School of Shanghai University of Sport were randomly assigned to experimental group (EG) and control group (CG). EG and CG were regularly trained with suspension training and traditional strength training for 40 minutes three times per week...
December 2017: Journal of Exercise Science and Fitness
https://www.readbyqxmd.com/read/29523284/resistance-exercise-and-sports-performance-the-minority-report
#16
Samuel L Buckner, Matthew B Jessee, Scott J Dankel, Kevin T Mattocks, Takashi Abe, Jeremy P Loenneke
Resistance exercise is typically performed to increase both muscle size and strength and is regularly incorporated into training programs for sports performance. Presumably, the exercise would be expected to increase the force producing capabilities of skeletal muscle, which may have subsequent influence on various sports related abilities. Interestingly, few studies are designed to examine sports related benefits of resistance exercise while including a proper control group to account for adaptations to simply performing the sports related task...
April 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29517405/erratum-berryman-et-al-2018
#17
(no author information available yet)
In the article by Berryman N, Mujika I, Arvisais D, Roubeix M, Binet C, Bosquet L. Strength training for middle- and long-distance performance: a meta-analysis. Int J Sports Physiol Perform. 2018;13(1):57-63. doi: 10.1123/ijspp.2017-0032 , there were errors in an author's name and with 2 author affiliations: (1) Iñigo Mujika was incorrectly spelled as Inigo Mujika, (2) Mujika's second affiliation (School of Kinesiology, Universidad Finis Terrae, Santiago, Chile) was absent, and (c) University of Poitiers was incorrectly spelled as University or Poitiers...
March 8, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29507858/renal-function-and-physical-fitness-after-12-mo-supervised-training-in-kidney-transplant-recipients
#18
Giulio Sergio Roi, Giovanni Mosconi, Valentina Totti, Maria Laura Angelini, Erica Brugin, Patrizio Sarto, Laura Merlo, Sergio Sgarzi, Michele Stancari, Paola Todeschini, Gaetano La Manna, Andrea Ermolao, Ferdinando Tripi, Lucia Andreoli, Gianluigi Sella, Alberto Anedda, Laura Stefani, Giorgio Galanti, Rocco Di Michele, Franco Merni, Manuela Trerotola, Daniela Storani, Alessandro Nanni Costa
AIM: To evaluate the effect of a 12-mo supervised aerobic and resistance training, on renal function and exercise capacity compared to usual care recommendations. METHODS: Ninety-nine kidney transplant recipients (KTRs) were assigned to interventional exercise (Group A; n = 52) and a usual care cohort (Group B; n = 47). Blood and urine chemistry, exercise capacity, muscular strength, anthropometric measures and health-related quality of life (HRQoL) were assessed at baseline, and after 6 and 12 mo...
February 24, 2018: World Journal of Transplantation
https://www.readbyqxmd.com/read/29498028/a-new-direction-to-athletic-performance-understanding-the-acute-and-longitudinal-responses-to-backward-running
#19
REVIEW
Aaron Uthoff, Jon Oliver, John Cronin, Craig Harrison, Paul Winwood
Backward running (BR) is a form of locomotion that occurs in short bursts during many overground field and court sports. It has also traditionally been used in clinical settings as a method to rehabilitate lower body injuries. Comparisons between BR and forward running (FR) have led to the discovery that both may be generated by the same neural circuitry. Comparisons of the acute responses to FR reveal that BR is characterised by a smaller ratio of braking to propulsive forces, increased step frequency, decreased step length, increased muscle activity and reliance on isometric and concentric muscle actions...
March 1, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29493531/-comparison-of-pelvic-floor-muscle-strength-in-competition-level-athletes-and-untrained-women
#20
Ingunn Ludviksdottir, Hildur Hardardottir, Thorgerdur Sigurdardottir, Gudmundur F Ulfarsson
INTRODUCTION: Exercise can stress the pelvic floor muscles. Numerous women experience urinary incontinence while exercising or competing in sports. This study investigated pelvic floor muscle strength, urinary incontinence, and knowledge in contracting pelvic floor muscles among female athletes and untrained women. MATERIALS AND METHODS: This was a prospective case-control study measuring pelvic floor muscle strength using vaginal pressure meas-urement. Participants answered questions regarding general health, urinary incontinence, and knowledge on pelvic floor muscles...
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