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https://www.readbyqxmd.com/read/28933716/self-rated-accuracy-of-rating-of-perceived-exertion-based-load-prescription-in-powerlifters
#1
Eric R Helms, Scott R Brown, Matt R Cross, Adam Storey, John Cronin, Michael C Zourdos
This study assessed male (n = 9) and female (n = 3) powerlifters' (18-49 years) ability to select loads using the repetitions in reserve-based rating of perceived exertion (RPE) scale for a single set for squat, bench press, and deadlift. Subjects trained 3× per week. For 3 weeks on nonconsecutive days in the weekly order of hypertrophy (8 repetitions at 8 RPE), power (2 repetitions at 8 RPE), and strength (3 repetitions at 9 RPE), using subject-selected loads intended to match the target RPE. Bench press and squat were performed every session and deadlift during strength and power only...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28894425/analysis-of-wearable-and-smartphone-based-technologies-for-the-measurement-of-barbell-velocity-in-different-resistance-training-exercises
#2
Carlos Balsalobre-Fernández, David Marchante, Eneko Baz-Valle, Iván Alonso-Molero, Sergio L Jiménez, Mario Muñóz-López
The purpose of this study was to analyze the validity, reliability, and accuracy of new wearable and smartphone-based technology for the measurement of barbell velocity in resistance training exercises. To do this, 10 highly trained powerlifters (age = 26.1 ± 3.9 years) performed 11 repetitions with loads ranging 50-100% of the 1-Repetition maximum in the bench-press, full-squat, and hip-thrust exercises while barbell velocity was simultaneously measured using a linear transducer (LT), two Beast wearable devices (one placed on the subjects' wrist -BW-, and the other one directly attached to the barbell -BB-) and the iOS PowerLift app...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28682930/analysis-of-usa-powerlifting-federation-data-from-january-1-2012-june-11-2016
#3
Robert Ball, Drew Weidman
In this paper we report on 47,913 officially judged contestant results from powerlifting matches from January 1, 2012 - June 11, 2016 for the USA Powerlifting Federation.We found that age and sex to be the most complex factors in predicting powerlifting results. For women, in general, the younger the woman is, the more they can squat; the older the woman is the less they can squat. For men and women, with the one exception for women's squat, the peak age of lifting power is between the ages of 24-49, at which point lifting power slowly declines...
July 3, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28638346/micrornas-in-muscle-characterizing-the-powerlifter-phenotype
#4
Randall F D'Souza, Thomas Bjørnsen, Nina Zeng, Kirsten M M Aasen, Truls Raastad, David Cameron-Smith, Cameron J Mitchell
Powerlifters are the epitome of muscular adaptation and are able to generate extreme forces. The molecular mechanisms underpinning the significant capacity for force generation and hypertrophy are not fully elucidated. MicroRNAs (miRs) are short non-coding RNA sequences that control gene expression via promotion of transcript breakdown and/or translational inhibition. Differences in basal miR expression may partially account for phenotypic differences in muscle mass and function between powerlifters and untrained age-matched controls...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28597613/the-use-of-steroids-by-gym-athletes-an-attempt-to-diagnose-the-problem-scale-and-possible-causes
#5
Katarzyna Gwizdek, Anna Brzęk, Monika Bąk-Sosnowska, Anna Dittfeld, Andrzej Knapik, Damian Ziaja
BACKGROUND: Anabolic-androgenic steroids (AAS) are said to be frequently used by both professional and amateur athletes. In addition to having a negative impact on health, steroids defy the concept of fair play. DESIGN: observational study. SETTING: other - Gyms. AIM: The aim of the study was to evaluate the scale of the problem related to using anabolic- androgenic steroids (AAS) by gym athletes and to analyze possible causes...
June 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28545824/classification-of-deadlift-biomechanics-with-wearable-inertial-measurement-units
#6
Martin A O'Reilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
The deadlift is a compound full-body exercise that is fundamental in resistance training, rehabilitation programs and powerlifting competitions. Accurate quantification of deadlift biomechanics is important to reduce the risk of injury and ensure training and rehabilitation goals are achieved. This study sought to develop and evaluate deadlift exercise technique classification systems utilising Inertial Measurement Units (IMUs), recording at 51.2Hz, worn on the lumbar spine, both thighs and both shanks. It also sought to compare classification quality when these IMUs are worn in combination and in isolation...
May 16, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28431408/the-effects-of-exercise-modality-during-additional-high-intensity-interval-training-upon-aerobic-fitness-and-strength-in-powerlifting-and-strongman-athletes
#7
Patroklos Androulakis-Korakakis, Louis Langdown, Adam Lewis, James Fisher, Paulo Gentil, Antonio Paoli, James Steele
Powerlifters and strongman athletes have a necessity for optimal levels of muscular strength whilst maintaining sufficient aerobic capacity to perform and recover between events. HIIT has been popularized for its efficacy in improving both aerobic fitness and strength but never assessed within the aforementioned population group. The present study looked to compare the effect of exercise modality, e.g. a traditional aerobic mode (AM), and strength mode, (SM), during HIIT upon aerobic fitness and strength. Sixteen well resistance trained male participants, currently competing in powerlifting and strongman events, completed 8 weeks of approximately effort- and volume-matched HIIT in 2 groups: AM (cycling, n=8) and SM (resistance training, n=8)...
April 21, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28344451/retrospective-injury-epidemiology-and-risk-factors-for-injury-in-crossfit
#8
Alicia M Montalvo, Hilary Shaefer, Belinda Rodriguez, Tan Li, Katrina Epnere, Gregory D Myer
The objective of the study is to examine injury epidemiology and risk factors for injury in CrossFit athletes. A survey was administered to athletes at four owner-operated facilities in South Florida. Respondents reported number, location of injury, and training exposure from the preceding six months and answered questions regarding potential risk factors for injury. Fifty out of 191 athletes sustained 62 injuries during CrossFit participation in the preceding six months. The most frequently injured locations were the shoulder, knee, and lower back...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28328723/comparison-of-powerlifting-performance-in-trained-men-using-traditional-and-flexible-daily-undulating-periodization-erratum
#9
(no author information available yet)
No abstract text is available yet for this article.
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28195975/the-high-bar-and-low-bar-back-squats-a-biomechanical-analysis
#10
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/28129275/comparison-of-powerlifting-performance-in-trained-men-using-traditional-and-flexible-daily-undulating-periodization
#11
RANDOMIZED CONTROLLED TRIAL
Ryan J Colquhoun, Christopher M Gai, Jeoffrey Walters, Andrew R Brannon, Marcus W Kilpatrick, Dominic P DʼAgostino, Bill I Campbell
Colquhoun, RJ, Gai, CM, Walters, J, Brannon, AR, Kilpatrick, MW, D'Agostino, DP, and Campbell, WI. Comparison of powerlifting performance in trained men using traditional and flexible daily undulating periodization. J Strength Cond Res 31(2): 283-291, 2017-Daily undulating periodization (DUP) is a growing trend, both in practice and in the scientific literature. A new form of DUP, flexible daily undulating periodization (FDUP), allows for athletes to have some autonomy by choosing the order of their training...
February 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28097928/validity-and-reliability-of-a-novel-iphone-app-for-the-measurement-of-barbell-velocity-and-1rm-on-the-bench-press-exercise
#12
Carlos Balsalobre-Fernández, David Marchante, Mario Muñoz-López, Sergio L Jiménez
The purpose of this study was to analyse the validity and reliability of a novel iPhone app (named: PowerLift) for the measurement of mean velocity on the bench-press exercise. Additionally, the accuracy of the estimation of the 1-Repetition maximum (1RM) using the load-velocity relationship was tested. To do this, 10 powerlifters (Mean (SD): age = 26.5 ± 6.5 years; bench press 1RM · kg(-1) = 1.34 ± 0.25) completed an incremental test on the bench-press exercise with 5 different loads (75-100% 1RM), while the mean velocity of the barbell was registered using a linear transducer (LT) and Powerlift...
January 18, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27893477/an-evaluation-of-agonist-antagonist-strength-ratios-and-posture-among-powerlifters
#13
Paul T Cutrufello, Stephen J Gadomski, Nicholas A Ratamess
Cutrufello, PT, Gadomski, SJ, and Ratamess, NA. An evaluation of agonist:antagonist strength ratios and posture among powerlifters. J Strength Cond Res 31(2): 298-304, 2017-Powerlifters routinely focus on 3 exercises: bench press, squat, and deadlift. This focus may predispose them to the development of muscle imbalances in either the upper or lower extremity which might also influence posture. Therefore, the purpose of the present study was to examine the agonist:antagonist strength ratios and their relationship to postural measures among powerlifters...
February 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27806009/tapering-practices-of-croatian-open-class-powerlifting-champions
#14
Jozo Grgic, Pavle Mikulic
Grgic, J and Mikulic, P. Tapering practices of Croatian open-class powerlifting champions. J Strength Cond Res 31(9): 2371-2378, 2017-The aim of this study was to explore tapering practices among 10 Croatian open-class powerlifting champions (mean ± SD: age 29.2 ± 3.2 years; Wilks coefficient 355.1 ± 54.8). The athletes were interviewed about their tapering practices using a semi-structured interview after which the audio content was transcribed. The athletes reported decreasing training volume during the taper by 50...
September 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27707741/injuries-among-weightlifters-and-powerlifters-a-systematic-review
#15
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/27601773/association-analysis-of-ace-actn3-and-ppargc1a-gene-polymorphisms-in-two-cohorts-of-european-strength-and-power-athletes
#16
V Gineviciene, A Jakaitiene, M O Aksenov, A V Aksenova, A M Druzhevskaya, I V Astratenkova, E S Egorova, L J Gabdrakhmanova, L Tubelis, V Kucinskas, A Utkus
The performance of professional strength and power athletes is influenced, at least partly, by genetic components. The main aim of this study was to investigate individually and in combination the association of ACE (I/D), ACTN3 (R577X) and PPARGC1A (Gly482Ser) gene polymorphisms with strength/power-oriented athletes' status in two cohorts of European athletes. A cohort of European Caucasians from Russia and Lithuania (161 athletes: by groups - weightlifters (87), powerlifters (60), throwers (14); by elite status - 'elite' (104), 'sub-elite' (57); and 1,202 controls) were genotyped for ACE, ACTN3 and PPARGC1A polymorphisms...
September 2016: Biology of Sport
https://www.readbyqxmd.com/read/27396416/resting-extracellular-signal-regulated-protein-kinase-1-2-expression-following-a-continuum-of-chronic-resistance-exercise-training-paradigms
#17
Andrew J Galpin, Andrew C Fry, Justin X Nicoll, Christopher A Moore, Brian K Schilling, Donald B Thomason
Extracellular signal-regulated protein kinase 1/2 (ERK1/2) moderates skeletal muscle growth; however, chronic responses of this protein to unique resistance exercise (RE) paradigms are yet to be explored. The purpose of this investigation was to describe the long-term response of ERK1/2 following circuit weight training (CWT), recreationally weight training (WT), powerlifting (PL) and weightlifting (WL). Independent t-tests were used to determine differences in trained groups compared to sedentary controls...
July 2016: Research in Sports Medicine
https://www.readbyqxmd.com/read/27361572/an-evaluation-of-agonist-antagonist-strength-ratios-and-posture-in-an-elite-powerlifter-3003-board-68-june-3-3-30-pm-5-00-pm
#18
Paul T Cutrufello, Stephen J Gadomski, Nicholas A Ratamess
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27328853/the-epidemiology-of-injuries-across-the-weight-training-sports
#19
REVIEW
Justin W L Keogh, Paul W Winwood
BACKGROUND: Weight-training sports, including weightlifting, powerlifting, bodybuilding, strongman, Highland Games, and CrossFit, are weight-training sports that have separate divisions for males and females of a variety of ages, competitive standards, and bodyweight classes. These sports may be considered dangerous because of the heavy loads commonly used in training and competition. OBJECTIVES: Our objective was to systematically review the injury epidemiology of these weight-training sports, and, where possible, gain some insight into whether this may be affected by age, sex, competitive standard, and bodyweight class...
March 2017: Sports Medicine
https://www.readbyqxmd.com/read/27243918/rpe-and-velocity-relationships-for-the-back-squat-bench-press-and-deadlift-in-powerlifters
#20
Eric R Helms, Adam Storey, Matt R Cross, Scott R Brown, Seth Lenetsky, Hamish Ramsay, Carolina Dillen, Michael C Zourdos
Helms, ER, Storey, A, Cross, MR, Browm, SR, Lenetsky, S, Ramsay, H, Dillen, C, and Zourdos, MC. RPE and velocity relationships for the back squat, bench press, and deadlift in powerlifters. J Strength Cond Res 31(2): 292-297, 2017-The purpose of this study was to compare average concentric velocity (ACV) and rating of perceived exertion (RPE) based on repetitions in reserve on the squat, bench press, and deadlift. Fifteen powerlifters (3 women and 12 men, mean age 28.4 ± 8.5 years) worked up to a one repetition maximum (1RM) on each lift...
February 2017: Journal of Strength and Conditioning Research
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