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https://www.readbyqxmd.com/read/29472740/physiological-and-performance-changes-in-national-and-international-judo-athletes-during-block-periodization-training
#1
Lucas Marques, Emerson Franchini, Gustavo Drago, Marcelo S Aoki, Alexandre Moreira
Block periodization (BP) has been proposed as an alternative approach for application in the context of high-level sports. Despite its growing acceptance, there is no empirical evidence of BP adoption in high-level judo athletes. Therefore, this study aimed to compare the maximal strength, muscle power, judo-specific performances, and hormonal concentration changes of state/national level (NG) and international level (IG) judo athletes subjected to BP. Twenty-one elite judo athletes (international level = 10; 21...
December 2017: Biology of Sport
https://www.readbyqxmd.com/read/29470824/turning-up-the-heat-an-evaluation-of-the-evidence-for-heating-to-promote-exercise-recovery-muscle-rehabilitation-and-adaptation
#2
REVIEW
Hamish McGorm, Llion A Roberts, Jeff S Coombes, Jonathan M Peake
Historically, heat has been used in various clinical and sports rehabilitation settings to treat soft tissue injuries. More recently, interest has emerged in using heat to pre-condition muscle against injury. The aim of this narrative review was to collate information on different types of heat therapy, explain the physiological rationale for heat therapy, and to summarise and evaluate the effects of heat therapy before, during and after muscle injury, immobilisation and strength training. Studies on skeletal muscle cells demonstrate that heat attenuates cellular damage and protein degradation (following in vitro challenges/insults to the cells)...
February 22, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29466269/neuromuscular-effects-to-6-weeks-of-loaded-countermovement-jumping-with-traditional-and-daily-undulating-periodization
#3
Boris Ullrich, Thiemo Pelzer, Mark Pfeiffer
Ullrich, B, Pelzer, T, and Pfeiffer, M. Neuromuscular effects to 6 weeks of loaded countermovement jumping with traditional and daily undulating periodization. J Strength Cond Res 32(3): 660-674, 2018-Loaded vertical jumps are routinely used to enhance athlete's power production in the lower extremity and to optimize jumping and sprinting performance. This study compared traditional (TP) and daily undulating (DUP) periodization on muscle strength, jumping performance, electromyographic (EMG) muscle activity, and muscle architecture during preseason loaded jump training...
March 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29387636/the-time-has-come-to-incorporate-a-greater-focus-on-rate-of-force-development-training-in-the-sports-injury-rehabilitation-process
#4
REVIEW
Matthew Buckthorpe, Giulio Sergio Roi
This narrative and literature review discusses the relevance of Rate of Force Development (RFD) (the slope of the force time curve) for Return To Sport (RTS), its determinants and the influence of training practices on it expression, with the purpose to enhance clinicians' awareness of how RFD training may enhance RTS success. RFD is considered functionally more relevant than maximal muscle strength during certain very fast actions including rapid joint stabilisation following mechanical perturbation. Deficits in RFD are reported following conventional rehabilitation programmes despite full restoration of maximal strength, which may contribute to the less than satisfactory RTS outcomes reported in the literature...
July 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29372481/the-importance-of-muscular-strength-training-considerations
#5
REVIEW
Timothy J Suchomel, Sophia Nimphius, Christopher R Bellon, Michael H Stone
This review covers underlying physiological characteristics and training considerations that may affect muscular strength including improving maximal force expression and time-limited force expression. Strength is underpinned by a combination of morphological and neural factors including muscle cross-sectional area and architecture, musculotendinous stiffness, motor unit recruitment, rate coding, motor unit synchronization, and neuromuscular inhibition. Although single- and multi-targeted block periodization models may produce the greatest strength-power benefits, concepts within each model must be considered within the limitations of the sport, athletes, and schedules...
January 25, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29369956/comparison-of-exercise-performance-in-recreationally-active-and-masters-athlete-women
#6
Matthew S Stone, Jordan M Glenn, Jennifer L Vincenzo, Michelle Gray
Stone, MS, Glenn, JM, Vincenzo, JL, and Gray, M. Comparison of exercise performance in recreationally active and masters athlete women. J Strength Cond Res 32(2): 565-571, 2018-Master athletes (MA) are an understudied, ever-growing cohort. As such, it is important to examine how age affects muscular power and fatigability. Of particular interest is muscular power maintenance and fatigue mitigation of MA compared with young, healthy adults. The purpose of this investigation was to examine the differences in peak power, average power, total work (WRK), and fatigue index (FI) between recreationally active (RA) younger adults and female MA during anaerobic cycling exercise...
February 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29350556/rehabilitation-of-a-young-athlete-with-extension-based-low-back-pain-addressing-motor-control-impairments-and-central-sensitization
#7
John J Winslow, Mark Jackson, Andrew Getzin, Michael Costello
OBJECTIVE:   To describe the conservative management of a young athlete with extension-based (EB) low back pain (LBP). BACKGROUND:   We present the case of a 15-year-old female high school gymnast with a 4-year history of EB LBP. Magnetic resonance imaging revealed a healed spondylolysis and significant lumbar multifidi muscle (LMM) atrophy with fatty infiltrate. She had several courses of outpatient orthopaedic rehabilitation that focused on core muscle strengthening (improving activation and strength of the LMM and transversus abdominus muscle in a neutral pelvic position) without long-lasting improvement...
January 19, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29338015/exercise-induced-circulating-microrna-changes-in-athletes-in-various-training-scenarios
#8
Martin Horak, Filip Zlamal, Robert Iliev, Jan Kucera, Jan Cacek, Lenka Svobodova, Zuzana Hlavonova, Tomas Kalina, Ondrej Slaby, Julie Bienertova-Vasku
BACKGROUND: The aim of the study was to compare selected extracellular miRNA levels (miR-16, miR-21, miR-93 and miR-222 with the response to 8-week-long explosive strength training (EXPL), hypertrophic strength training (HYP) and high-intensity interval training (HIIT). METHODS: 30 young male athletes of white European origin (mean age: 22.5 ± 4.06 years) recruited at the Faculty of Sports Studies of Masaryk University were enrolled in this study. The study participants were randomly assigned to three possible training scenarios: EXPL, HYP or HITT and participated in 8-week-long program in given arm...
2018: PloS One
https://www.readbyqxmd.com/read/29315348/knee-strength-ratios-in-competitive-female-athletes
#9
Jaroslaw Kabacinski, Michal Murawa, Krzysztof Mackala, Lechoslaw Bogdan Dworak
Knee strength ratios are related to the movement patterns, sport-specific training and knee injuries in athletes. The purpose of this study was to determine the ratios in the concentric isokinetic strength of the hamstrings and quadriceps and the isometric strength of the knee extensors. In female basketball players (n = 14) and female volleyball players (n = 12) were evaluated: the hamstrings to quadriceps peak torque ratio (H/Q) and side-to-side peak torque ratio (TR) for hamstrings and quadriceps; the ratio of the maximal bilateral strength to the summed maximal unilateral strength (B/U) and side-to-side maximal strength ratio (SR) for knee extensors...
2018: PloS One
https://www.readbyqxmd.com/read/29314903/national-athletic-trainers-association-position-statement-prevention-of-anterior-cruciate-ligament-injury
#10
Darin A Padua, Lindsay J DiStefano, Timothy E Hewett, William E Garrett, Stephen W Marshall, Grace M Golden, Sandra J Shultz, Susan M Sigward
OBJECTIVE:   To provide certified athletic trainers, physicians, and other health care and fitness professionals with recommendations based on current evidence regarding the prevention of noncontact and indirect-contact anterior cruciate ligament (ACL) injuries in athletes and physically active individuals. BACKGROUND:   Preventing ACL injuries during sport and physical activity may dramatically decrease medical costs and long-term disability. Implementing ACL injury-prevention training programs may improve an individual's neuromuscular control and lower extremity biomechanics and thereby reduce the risk of injury...
January 9, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29290539/is-acl-reconstruction-a-prerequisite-for-the-patients-having-recreational-sporting-activities
#11
Emrah Kovalak, Tolga Atay, Cem Çetin, I Meltem Atay, Mustafa Onur Serbest
OBJECTIVE: Whether surgical or conservative treatment is more effective in allowing patients to return to physical activity after anterior cruciate ligament (ACL) injury is controversial. We sought to compare mid-term outcome measures between isolated ACL tear patients who underwent reconstruction followed by closed kinetic chain exercises and those who underwent neuromuscular training only. METHODS: We retrospectively evaluated patients with ACL tears who underwent post-surgery CKC strength training after ACL reconstruction (Group A), and patients who only underwent neuromuscular training (Group B) with a minimum follow-up time of 5 years...
December 28, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29286534/fitness-training-for-cardiorespiratory-conditioning-after-traumatic-brain-injury
#12
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/29280665/use-of-nutritional-supplements-and-ergogenic-aids-in-professional-tennis-players
#13
Álvaro López-Samanes, Víctor Moreno-Pérez, Mark S Kovacs, Jesús G Pallarés, Ricardo Mora-Rodríguez, Juan F Ortega
INTRODUCTION: Nutritional supplements and ergogenic aids (NS&EA) are used between training/matches with the goal of enhancing tennis performance. Scientific literature about prevalence and use of NS&EA in professional tennis players is scarce. OBJECTIVE: The aim of the study was to describe the NS&EA used by professional tennis players during a season. METHODS: Using a validated self-administered questionnaire, 62 professional male and 9 professional female tennis players (11% in their gender specific top 100 tennis world ranking (i...
November 17, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29276545/the-beneficial-effects-of-different-types-of-exercise-interventions-on-motor-and-cognitive-functions-in-older-age-a-systematic-review
#14
REVIEW
Oron Levin, Yael Netz, Gal Ziv
The decline in cognitive and motor functions with age affects the performance of the aging healthy population in many daily life activities. Physical activity appears to mitigate this decline or even improve motor and cognitive abilities in older adults. The current systematic review will focus mainly on behavioral studies that look into the dual effects of different types of physical training (e.g., balance training, aerobic training, strength training, group sports, etc.) on cognitive and motor tasks in older adults with no known cognitive or motor disabilities or disease...
2017: European Review of Aging and Physical Activity
https://www.readbyqxmd.com/read/29249084/return-to-sport-in-athletes-with-midportion-achilles-tendinopathy-a-qualitative-systematic-review-regarding-definitions-and-criteria
#15
REVIEW
Bas Habets, Anke G van den Broek, Bionka M A Huisstede, Frank J G Backx, Robert E H van Cingel
BACKGROUND: Midportion Achilles tendinopathy (AT) can cause long-term absence from sports participation, and shows high recurrence rates. It is important that the decision to return to sport (RTS) is made carefully, based on sharply delimited criteria. Lack of a well-defined definition and criteria hampers the decision to RTS among athletes with AT, and impedes comparison of RTS rates between different studies. OBJECTIVE: The aim of this study was to systematically review the literature for definitions of, and criteria for, RTS in AT research...
December 16, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29248809/the-identification-of-high-potential-archers-based-on-fitness-and-motor-ability-variables-a-support-vector-machine-approach
#16
Zahari Taha, Rabiu Muazu Musa, Anwar P P Abdul Majeed, Muhammad Muaz Alim, Mohamad Razali Abdullah
Support Vector Machine (SVM) has been shown to be an effective learning algorithm for classification and prediction. However, the application of SVM for prediction and classification in specific sport has rarely been used to quantify/discriminate low and high-performance athletes. The present study classified and predicted high and low-potential archers from a set of fitness and motor ability variables trained on different SVMs kernel algorithms. 50 youth archers with the mean age and standard deviation of 17...
December 14, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29244841/individual-preferences-for-physical-exercise-as-secondary-prevention-for-non-specific-low-back-pain-a-discrete-choice-experiment
#17
Emmanuel Aboagye, Jan Hagberg, Iben Axén, Lydia Kwak, Malin Lohela-Karlsson, Eva Skillgate, Gunilla Dahlgren, Irene Jensen
BACKGROUND: Exercise is effective in improving non-specific low back pain (LBP). Certain components of physical exercise, such as the type, intensity and frequency of exercise, are likely to influence participation among working adults with non-specific LBP, but the value and relative importance of these components remain unknown. The study's aim was to examine such specific components and their influence on individual preferences for exercise for secondary prevention of non-specific LBP among working adults...
2017: PloS One
https://www.readbyqxmd.com/read/29228408/-biomechanical-evaluation-of-rehabilitation-after-surgical-repair-of-achilles-tendon-ruptures
#18
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
#19
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
#20
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
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