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https://www.readbyqxmd.com/read/29629185/evaluation-of-spine-mris-in-athletes-participating-in-the-rio-de-janeiro-2016-summer-olympic-games
#1
Michael S Wasserman, Ali Guermazi, Mohamed Jarraya, Lars Engbretsen, Mohamad AbdelKader, Frank W Roemer, Daichi Hayashi, Michel D Crema, Asim Z Mian
Background/aim: In high-level Olympic athletes, many spinal pathologies arise from overuse, while others are the result of acute injury. Our aim is to analyse the epidemiology of spinal pathologies detected on MRI in athletes participating in the 2016 Rio de Janeiro Summer Olympics. Methods: In this retrospective study, all spine MRIs performed during the 2016 Rio Games were analysed. Descriptive data from the MRIs were tabulated and analysed for disc degeneration, spinal canal and/or neural foraminal narrowing, and acute/chronic fractures...
2018: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29445518/why-do-endocrine-profiles-in-elite-athletes-differ-between-sports
#2
Peter H Sönksen, Richard I G Holt, Walailuck Böhning, Nishan Guha, David A Cowan, Christiaan Bartlett, Dankmar Böhning
Background: Endocrine profiles have been measured on blood samples obtained immediately post-competition from 693 elite athletes from 15 Olympic Sports competing at National or International level; four were subsequently excluded leaving 689 for the current analysis. Methods: Body composition was measured by bioimpedance in a sub-set of 234 (146 men and 88 women) and from these data a regression model was constructed that enabled 'estimated' lean body mass and fat mass to be calculated on all athletes...
2018: Clinical Diabetes and Endocrinology
https://www.readbyqxmd.com/read/29377776/the-effect-of-vision-and-surface-compliance-on-balance-in-untrained-and-strength-athletes
#3
Megan A Bryanton, Martin Bilodeau
The purpose of this investigation was to evaluate the effect of the removal of vision and/or surface compliance on postural stability in strength athletes who habitually use free-weights and compound movements in their training (i.e., powerlifters, Olympic weightlifters), and untrained individuals. Static and dynamic balance testing was performed with eyes open or closed on stable and memory foam surfaces. Both groups had similar increases in postural sway area and velocity during quiet standing testing; whereas group main effects and interactions for dynamic testing revealed that untrained participants experienced greater relative declines in postural performance when voluntary limits of stability are stressed, especially when both vision and surface compliance were deterred...
January 29, 2018: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28758938/effects-of-pomegranate-juice-supplementation-on-oxidative-stress-biomarkers-following-weightlifting-exercise
#4
Achraf Ammar, Mouna Turki, Omar Hammouda, Hamdi Chtourou, Khaled Trabelsi, Mohamed Bouaziz, Osama Abdelkarim, Anita Hoekelmann, Fatma Ayadi, Nizar Souissi, Stephen J Bailey, Tarak Driss, Sourour Yaich
The aim of this study was to test the hypothesis that pomegranate juice supplementation would blunt acute and delayed oxidative stress responses after a weightlifting training session. Nine elite weightlifters (21.0 ± 1 years) performed two Olympic-Weightlifting sessions after ingesting either the placebo or pomegranate juice supplements. Venous blood samples were collected at rest and 3 min and 48 h after each session. Compared to the placebo condition, pomegranate juice supplementation attenuated the increase in malondialdehyde (-12...
July 29, 2017: Nutrients
https://www.readbyqxmd.com/read/28538307/can-cold-water-immersion-enhance-recovery-in-elite-olympic-weightlifters-an-individualized-perspective
#5
Jan Schimpchen, Maximilian Wagner, Alexander Ferrauti, Michael Kellmann, Mark Pfeiffer, Tim Meyer
We investigated whether cold water immersion (CWI) after intensive training sessions can enhance recovery in elite Olympic weightlifters, taking into account each athlete's individual response pattern. The entire German male Olympic weightlifting national team participated in the study (n = 7), ensuring collection of data from elite athletes only. Using a randomized cross-over design, the athletes went through 2 high-intensity training microcycles consisting of 5 training sessions that were either followed by a CWI or passive recovery...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28295634/the-utility-of-salivary-testosterone-and-cortisol-concentration-measures-for-assessing-the-stress-responses-of-junior-athletes-during-a-sporting-competition
#6
Blair T Crewther, Zbigniew Obmiński, Joanna Orysiak, Emad A S Al-Dujaili
BACKGROUND: This study examined the utility of salivary testosterone (T) and cortisol (C) concentration measures for assessing the acute stress responses of junior athletes during a sporting competition. METHODS: Paired capillary blood and saliva samples were taken from 71 junior athletes (45 males, 26 females) before and after a simulated Olympic weightlifting competition. The concentration measures of salivary T and C were referenced against blood total T (TT) and C (TC) concentrations...
January 2018: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28253059/are-injuries-more-common-with-crossfit-training-than-other-forms-of-exercise
#7
Chelsey Klimek, Christopher Ashbeck, Alexander J Brook, Chris Durall
Clinical Scenario: CrossFit is a form of exercise that incorporates rapid and successive high-intensity ballistic movements. As CrossFit is an increasingly popular fitness option, it is important to determine how rates of injury compare to more traditional forms of exercise. This review was conducted to ascertain the incidence of injury with CrossFit relative to other forms of exercise. Focused Clinical Question: Are injuries more common with CrossFit training than other forms of exercise? Summary of Key Findings: (1) The literature was searched for studies that compared injury rates among individuals who participated in CrossFit fitness programs to participants in other exercise programs...
May 22, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28195975/the-high-bar-and-low-bar-back-squats-a-biomechanical-analysis
#8
Daniel J Glassbrook, Scott R Brown, Eric R Helms, J Scott Duncan, Adam G Storey
No prior study has compared the joint angle and ground reaction force (Fv) differences between the high-bar back-squat (HBBS) and low-bar back-squat (LBBS) above 90% 1RM. Six male powerlifters (height: 179.2 ± 7.8 cm; bodyweight: 87.1 ± 8.0 kg; age: 27.3 ± 4.2 years) of international level, six male Olympic weightlifters (height: 176.7 ± 7.7 cm; bodyweight: 83.1 ± 13 kg; age: 25.3 ± 3.1 years) of national level, and six recreationally trained male athletes (height: 181.9 ± 8.7 cm; bodyweight: 87.9 ± 15...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27994826/crossfit-%C3%A2-instructor-demographics-and-practice-trends
#9
Gregory R Waryasz, Vladimir Suric, Alan H Daniels, Joseph A Gil, Craig P Eberson
CrossFit® is an increasingly popular exercise modality that uses high intensity power training. The literature to date regarding CrossFit® has focused on its benefits to VO2 Max, body composition and the motivational variables of participants of CrossFit® . A computerized survey was distributed to CrossFit® instructors using Survey Monkey® (Palo Alto, CA, USA). One hundred and ninety-three CrossFit® instructors responded to the survey. Of these 86.6% (155/179) reported being a certified CrossFit® instructor with 26...
November 17, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/27820725/training-strategies-to-improve-muscle-power-is-olympic-style-weightlifting-relevant
#10
RANDOMIZED CONTROLLED TRIAL
Christian Helland, Eirik Hole, Erik Iversen, Monica Charlotte Olsson, Olivier Seynnes, Paul Andre Solberg, Gøran Paulsen
INTRODUCTION: This efficacy study investigated the effects of 1) Olympic-style weightlifting (OWL), 2) motorized strength and power training (MSPT), and 3) free weight strength and power training (FSPT) on muscle power. METHODS: Thirty-nine young athletes (20 ± 3 yr; ice hockey, volleyball, and badminton) were randomized into the three training groups. All groups participated in two to three sessions per week for 8 wk. The MSPT and FSPT groups trained using squats (two legs and single leg) with high force and high power, whereas the OWL group trained using clean and snatch exercises...
April 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27764091/pomegranate-supplementation-accelerates-recovery-of-muscle-damage-and-soreness-and-inflammatory-markers-after-a-weightlifting-training-session
#11
Achraf Ammar, Mouna Turki, Hamdi Chtourou, Omar Hammouda, Khaled Trabelsi, Choumous Kallel, Osama Abdelkarim, Anita Hoekelmann, Mohamed Bouaziz, Fatma Ayadi, Tarak Driss, Nizar Souissi
PURPOSE: The aim of this study was to investigate the effect of natural Pomegranate juice supplementation on performance and acute and delayed responses of muscle soreness and biomarkers of muscle damage after a weightlifting training session. METHODS: Nine elite weightlifters (21±0.5 years) performed two Olympic-Weightlifting-sessions after either placebo (PLA) or natural pomegranate juice (POMj) supplementations. Heart rate, blood pressure and blood samples (hematological parameters, muscle damage and C-reactive protein (CRP)) were collected at rest, 3min and 48h after each session...
2016: PloS One
https://www.readbyqxmd.com/read/27707741/injuries-among-weightlifters-and-powerlifters-a-systematic-review
#12
REVIEW
Ulrika Aasa, Ivar Svartholm, Fredrik Andersson, Lars Berglund
BACKGROUND: Olympic weightlifting and powerlifting are two sports that expose the body to great forces. Injury characteristics have not been systematically reviewed for these two growing sports. OBJECTIVE: The purpose of this study was to systematically review the literature regarding various definitions of injuries used, injury localisation, the prevalence and incidence of injuries and the associated risk factors for injuries in weightlifting and powerlifting. DESIGN: Systematic review...
February 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27615264/the-effect-of-steroid-hormones-on-the-physical-performance-of-boys-and-girls-during-an-olympic-weightlifting-competition
#13
Blair Crewther, Zbigniew Obminski, Christian Cook
PURPOSE: To examine the steroid hormone effect on the physical performance of young athletes during an Olympic weightlifting competition. METHODS: 26 boys and 26 girls were monitored across 2 weightlifting competitions. Pre- and post-competition testosterone (T), cortisol (C) and dehydroepiandrosterone-sulfate (DHEA-s) were measured in blood, with pre-event free T (FT) and the free androgen index (FAI) calculated. Body mass (BM) and weightlifting performance were recorded...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27601779/hang-cleans-and-hang-snatches-produce-similar-improvements-in-female-collegiate-athletes
#14
J L Ayers, M DeBeliso, T G Sevene, K J Adams
Olympic weightlifting movements and their variations are believed to be among the most effective ways to improve power, strength, and speed in athletes. This study investigated the effects of two Olympic weightlifting variations (hang cleans and hang snatches), on power (vertical jump height), strength (1RM back squat), and speed (40-yard sprint) in female collegiate athletes. 23 NCAA Division I female athletes were randomly assigned to either a hang clean group or hang snatch group. Athletes participated in two workout sessions a week for six weeks, performing either hang cleans or hang snatches for five sets of three repetitions with a load of 80-85% 1RM, concurrent with their existing, season-specific, resistance training program...
September 2016: Biology of Sport
https://www.readbyqxmd.com/read/27537412/can-cold-water-immersion-enhance-recovery-in-elite-olympic-weightlifters-an-individualized-perspective
#15
Jan Schimpchen, Maximilian Wagner, Alexander Ferrauti, Michael Kellmann, Mark Pfeiffer, Tim Meyer
We investigated whether cold water immersion following intensive training sessions can enhance recovery in elite Olympic weightlifters, taking into account each athlete's individual response pattern. The entire German male Olympic weightlifting national team participated in the study (n=7), ensuring collection of data from elite athletes only. Using a randomized cross-over design, the athletes went through two high intensity training microcycles consisting of five training sessions that were either followed by a cold water immersion or passive recovery...
August 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27360262/acute-elbow-pain-in-an-olympic-weightlifter-1343-june-2-8-20-am-8-40-am
#16
Abbie Kelley
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/26890972/comparing-the-effectiveness-of-a-short-term-vertical-jump-vs-weightlifting-program-on-athletic-power-development
#17
COMPARATIVE STUDY
Shaun Y M Teo, Michael J Newton, Robert U Newton, Alasdair R Dempsey, Timothy J Fairchild
Teo, SYM, Newton, MJ, Newton, RU, Dempsey, AR, and Fairchild, TJ. Comparing the effectiveness of a short-term vertical jump vs. weightlifting program on athletic power development. J Strength Cond Res 30(10): 2741-2748, 2016-Efficient training of neuromuscular power and the translation of this power to sport-specific tasks is a key objective in the preparation of athletes involved in team-based sports. The purpose of this study was to compare changes in center of mass (COM) neuromuscular power and performance of sport-specific tasks after short-term (6-week) training adopting either Olympic-style weightlifting (WL) exercises or vertical jump (VJ) exercises...
October 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/26626268/olympic-weightlifting-training-improves-vertical-jump-height-in-sportspeople-a-systematic-review-with-meta-analysis
#18
REVIEW
Daniel Hackett, Tim Davies, Najeebullah Soomro, Mark Halaki
PURPOSE: This systematic review was conducted to evaluate the effect of Olympic weightlifting (OW) on vertical jump (VJ) height compared to a control condition, traditional resistance training and plyometric training. METHODS: Five electronic databases were searched using terms related to OW and VJ. Studies needed to include at least one OW exercise, an intervention lasting ≥6 weeks; a comparison group of control, traditional resistance training or plyometric training; and to have measured VJ height...
July 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/26453313/acute-and-delayed-responses-of-c-reactive-protein-malondialdehyde-and-antioxidant-markers-after-resistance-training-session-in-elite-weightlifters-effect-of-time-of-day
#19
COMPARATIVE STUDY
Achraf Ammar, Hamdi Chtourou, Omar Hammouda, Khaled Trabelsi, Jihen Chiboub, Mouna Turki, Osama AbdelKarim, Kais El Abed, Mamdouh Ben Ali, Anita Hoekelmann, Nizar Souissi
The aim of this study was to investigate the effect of an Olympic-Weightlifting-session followed by 48-h recovery period on the oxidative and antioxidant parameters' diurnal variation. Nine weightlifters (21 ± 0.5 years) performed, in randomized order, three Olympic-Weightlifting-sessions at 08 h:00, 14 h:00 and 18 h:00. Blood samples were collected: at rest and 3 min and 48 h after each session. C-reactive protein (CRP), rate of lipid peroxidation and antioxidant activities were assessed. At rest, analysis of variance showed a significant time of day (TOD) effect (p < 0...
2015: Chronobiology International
https://www.readbyqxmd.com/read/25881566/subchondral-impaction-fractures-of-the-medial-femoral-condyle-in-weightlifters-a-report-of-5-cases
#20
Piotr Grzelak, Michał Tomasz Podgórski, Ludomir Stefańczyk, Marek Krochmalski, Marcin Domżalski
Although subchondral impaction fractures have already been reported in the non-weight-bearing portion of the lateral femoral condyle, this study reveals the presence of an intra-articular impaction fracture of the postero-superior region of the non-weight-bearing portion of the medial femoral condyle recognized in 5 of a group of 22 representatives of the Polish national Olympic weightlifting team, who underwent 1.5T magnetic resonance imaging examination. Articular cartilage lesions varied with regard to the type of injury and its severity ranging from healed or subchronic injuries to acute trauma...
January 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
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