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https://www.readbyqxmd.com/read/27925640/diagnosis-and-management-of-distal-clavicle-osteolysis
#1
Steven F DeFroda, Christopher Nacca, Gregory R Waryasz, Brett D Owens
Distal clavicle osteolysis is an uncommon condition that most commonly affects weight lifters and other athletes who perform repetitive overhead activity. Although this condition most commonly presents in young active men, it is becoming increasing more common in women with the rise in popularity of body building and extreme athletics. Distal clavicle osteolysis can be debilitating, especially in those with rigorous training regimens, preventing exercise because of pain with activities such as bench presses and chest flies...
December 7, 2016: Orthopedics
https://www.readbyqxmd.com/read/27843418/effects-of-acute-carbohydrate-ingestion-on-anaerobic-exercise-performance
#2
Ben M Krings, Jaden A Rountree, Matthew J McAllister, Patrick M Cummings, Timothy J Peterson, Brent J Fountain, JohnEric W Smith
BACKGROUND: Carbohydrate (CHO) supplementation during endurance exercises has been shown to increase performance, but there is limited research with CHO supplementation during strength and conditioning exercises. Therefore, the purpose of this study was to examine the effects of various levels of CHO ingestion during acute testing sessions requiring participants to complete a strength and conditioning program designed for collegiate athletes. METHODS: Participants (n = 7) performed a series of exercises while ingesting an amino-acid electrolyte control (CON) or CON plus varying levels of CHO...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27760844/injuries-in-an-extreme-conditioning-program
#3
Kyle T Aune, Joseph M Powers
BACKGROUND: Extreme conditioning programs (ECPs) are fitness training regimens relying on aerobic, plyometric, and resistance training exercises, often with high levels of intensity for a short duration of time. These programs have grown rapidly in popularity in recent years, but science describing the safety profile of these programs is lacking. HYPOTHESIS: The rate of injury in the extreme conditioning program is greater than the injury rate of weightlifting and the majority of injuries occur to the shoulder and back...
October 19, 2016: Sports Health
https://www.readbyqxmd.com/read/27390418/self-selected-intensity-ratings-of-perceived-exertion-and-affective-responses-in-sedentary-male-subjects-during-resistance-training
#4
Hassan Mohamed Elsangedy, Kleverton Krinski, Daniel Gomes da Silva Machado, Pedro Moraes Dutra Agrícola, Alexandre Hideki Okano, Sergio Gregório da Silva
[Purpose] This study examined the exercise intensity and psychophysiological responses to a self-selected resistance training session in sedentary male subjects. [Subjects and Methods] Twelve sedentary male subjects (35.8 ± 5.8 years; 25.5 ± 2.6 kg·m(2)) underwent four sessions at 48-h intervals: familiarization; two sessions of one repetition maximum test and a resistance training session in which they were told to self-select a load to complete 3 sets of 10 repetitions of chest press, leg press, seated rows, knee extension, overhead press, biceps curl, and triceps pushdown exercises...
June 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/26972269/the-kinetic-chain-revisited-new-concepts-on-throwing-mechanics-and-injury
#5
REVIEW
Samuel K Chu, Prakash Jayabalan, W Ben Kibler, Joel Press
The overhead throwing motion is a complex activity that is achieved through activation of the kinetic chain. The kinetic chain refers to the linkage of multiple segments of the body that allows for transfer of forces and motion. The lower extremities and core provide a base of support, generating energy that is transferred eventually through the throwing arm and hand, resulting in release of the ball. The kinetic chain requires optimal anatomy, physiology, and mechanics and is involved in all 6 phases of overhead throwing: windup, stride, arm cocking, acceleration, deceleration, and follow-through...
March 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/26904094/comparison-of-acceleration-techniques-for-selected-low-level-bioinformatics-operations
#6
Daniel Langenkämper, Tobias Jakobi, Dustin Feld, Lukas Jelonek, Alexander Goesmann, Tim W Nattkemper
Within the recent years clock rates of modern processors stagnated while the demand for computing power continued to grow. This applied particularly for the fields of life sciences and bioinformatics, where new technologies keep on creating rapidly growing piles of raw data with increasing speed. The number of cores per processor increased in an attempt to compensate for slight increments of clock rates. This technological shift demands changes in software development, especially in the field of high performance computing where parallelization techniques are gaining in importance due to the pressing issue of large sized datasets generated by e...
2016: Frontiers in Genetics
https://www.readbyqxmd.com/read/26761010/an-energy-efficient-skyline-query-for-massively-multidimensional-sensing-data
#7
Yan Wang, Wei Wei, Qingxu Deng, Wei Liu, Houbing Song
Cyber physical systems (CPS) sense the environment based on wireless sensor networks. The sensing data of such systems present the characteristics of massiveness and multi-dimensionality. As one of the major monitoring methods used in in safe production monitoring and disaster early-warning applications, skyline query algorithms are extensively adopted for multiple-objective decision analysis of these sensing data. With the expansion of network sizes, the amount of sensing data increases sharply. Then, how to improve the query efficiency of skyline query algorithms and reduce the transmission energy consumption become pressing and difficult to accomplish issues...
2016: Sensors
https://www.readbyqxmd.com/read/26637642/improving-shoulder-kinematics-in-individuals-with-paraplegia-comparison-across-circuit-resistance-training-exercises-and-modifications-in-hand-position
#8
Linda M Riek, Joshua Tome, Paula M Ludewig, Deborah A Nawoczenski
BACKGROUND: Circuit resistance training (CRT) should promote favorable kinematics (scapular posterior tilt, upward rotation, glenohumeral or scapular external rotation) to protect the shoulder from mechanical impingement following paraplegia. Understanding kinematics during CRT may provide a biomechanical rationale for exercise positions and exercise selection promoting healthy shoulders. OBJECTIVE: The purposes of this study were: (1) to determine whether altering hand position during CRT favorably modifies glenohumeral and scapular kinematics and (2) to compare 3-dimensional glenohumeral and scapular kinematics during CRT exercises...
July 2016: Physical Therapy
https://www.readbyqxmd.com/read/26479022/strength-and-power-correlates-of-throwing-velocity-on-subelite-male-cricket-players
#9
Jonathan L Freeston, Thomas Carter, Gary Whitaker, Owen Nicholls, Kieron B Rooney
Freeston, JL, Carter, T, Whitaker, G, Nicholls, O, and Rooney, KB. Strength and power correlates of throwing velocity on subelite male cricket players. J Strength Cond Res 30(6): 1646-1651, 2016-Throwing velocity is an important aspect of fielding in cricket to affect run-outs and reduce the opponent's run-scoring opportunities. Although a relationship between strength and/or power and throwing velocity has been well established in baseball, water polo, and European handball, it has not been adequately explored in cricket...
June 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/26261428/do-physiological-measures-predict-selected-crossfit-%C3%A2-benchmark-performance
#10
Scotty J Butcher, Tyler J Neyedly, Karla J Horvey, Chad R Benko
PURPOSE: CrossFit(®) is a new but extremely popular method of exercise training and competition that involves constantly varied functional movements performed at high intensity. Despite the popularity of this training method, the physiological determinants of CrossFit performance have not yet been reported. The purpose of this study was to determine whether physiological and/or muscle strength measures could predict performance on three common CrossFit "Workouts of the Day" (WODs). MATERIALS AND METHODS: Fourteen CrossFit Open or Regional athletes completed, on separate days, the WODs "Grace" (30 clean and jerks for time), "Fran" (three rounds of thrusters and pull-ups for 21, 15, and nine repetitions), and "Cindy" (20 minutes of rounds of five pull-ups, ten push-ups, and 15 bodyweight squats), as well as the "CrossFit Total" (1 repetition max [1RM] back squat, overhead press, and deadlift), maximal oxygen consumption (VO2max), and Wingate anaerobic power/capacity testing...
2015: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/26117074/the-influence-of-cycle-time-on-shoulder-fatigue-responses-for-a-fixed-total-overhead-workload
#11
Clark R Dickerson, Kimberly A Meszaros, Alan C Cudlip, Jaclyn N Chopp-Hurley, Joseph E Langenderfer
The relationship between overhead work and musculoskeletal health depends on multiple task and individual factors. Knowledge gaps persist, despite examination of many of these factors individually and in combination. This investigation targeted task variation, as parameterized by cycle time within a fixed overall workload. Participants performed an intermittent overhead pressing task with four different cycle time conditions while overall workload and duty cycle was held constant. Several manifestations of fatigue were monitored during task performance...
August 20, 2015: Journal of Biomechanics
https://www.readbyqxmd.com/read/25971742/geo2enrichr-browser-extension-and-server-app-to-extract-gene-sets-from-geo-and-analyze-them-for-biological-functions
#12
Gregory W Gundersen, Matthew R Jones, Andrew D Rouillard, Yan Kou, Caroline D Monteiro, Axel S Feldmann, Kevin S Hu, Avi Ma'ayan
MOTIVATION: Identification of differentially expressed genes is an important step in extracting knowledge from gene expression profiling studies. The raw expression data from microarray and other high-throughput technologies is deposited into the Gene Expression Omnibus (GEO) and served as Simple Omnibus Format in Text (SOFT) files. However, to extract and analyze differentially expressed genes from GEO requires significant computational skills. RESULTS: Here we introduce GEO2Enrichr, a browser extension for extracting differentially expressed gene sets from GEO and analyzing those sets with Enrichr, an independent gene set enrichment analysis tool containing over 70 000 annotated gene sets organized into 75 gene-set libraries...
September 15, 2015: Bioinformatics
https://www.readbyqxmd.com/read/25627646/comparison-of-in-season-specific-resistance-vs-a-regular-throwing-training-program-on-throwing-velocity-anthropometry-and-power-performance-in-elite-handball-players
#13
RANDOMIZED CONTROLLED TRIAL
Souhail Hermassi, Roland van den Tillaar, Riadh Khlifa, Mohamed Souhaiel Chelly, Karim Chamari
The purpose of this study was to compare the effect of a specific resistance training program (throwing movement with a medicine ball) with that of regular training (throwing with regular balls) on ball velocity, anthropometry, maximal upper-body strength, and power. Thirty-four elite male team handball players (age: 18 ± 0.5 years, body mass: 80.6 ± 5.5 kg, height: 1.80 ± 5.1 m, body fat: 13.4 ± 0.6%) were randomly assigned to 1 of the 3 groups: control (n = 10), resistance training group (n = 12), or regular throwing training group (n = 12)...
August 2015: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/24897658/signal-intensity-and-duration-estimation-in-rats
#14
P J Kraemer, R W Brown, C K Randall
Rats were trained on a short (2-second) versus long (10-second) duration discrimination. The duration of an overhead light signaled which of two lever-press responses, left or right, would produce food reinforcement. After the rats had acquired the discrimination, probe tests were presented in which the light varied in intensity (bright or dim) and duration (values between 2 and 10 seconds). The results indicated that rats judged a bright light to be longer than a dim light of equal duration. Signal intensity has been shown to affect timing in humans and pigeons...
September 1995: Behavioural Processes
https://www.readbyqxmd.com/read/24755868/development-test-retest-reliability-and-construct-validity-of-the-resistance-training-skills-battery
#15
David R Lubans, Jordan J Smith, Simon K Harries, Lisa M Barnett, Avery D Faigenbaum
The aim of this study was to describe the development and assess test-retest reliability and construct validity of the Resistance Training Skills Battery (RTSB) for adolescents. The RTSB provides an assessment of resistance training skill competency and includes 6 exercises (i.e., body weight squat, push-up, lunge, suspended row, standing overhead press, and front support with chest touches). Scoring for each skill is based on the number of performance criteria successfully demonstrated. An overall resistance training skill quotient (RTSQ) is created by adding participants' scores for the 6 skills...
May 2014: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/24572551/the-influence-of-the-spine-on-the-shoulder-in-the-throwing-athlete
#16
J L Young, S A Herring, J M Press, B A Casazza
Analysis of shoulder dysfunction in throwing and overhead athletes can no longer be restricted to evaluation of the glenohumeral joint alone. The isolated shoulder is incapable of generating the force necessary to hurl a baseball at velocities of 90-100 miles per hour or serve a tennis ball in excess of 120 miles per hour. The purpose of this paper is to provide a literature based theoretical framework for the role of the spine during these activities. The spine is a pivotal component of the kinematic chain which functions as a transfer link between the lower and upper limbs, a force generator capable of accelerating the arm, and a force attenuator which dampens shear forces at the glenohumeral joint during the deceleration phase of the pitching motion...
January 1, 1996: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/24476745/session-ratings-of-perceived-exertion-responses-during-resistance-training-bouts-equated-for-total-work-but-differing-in-work-rate
#17
Justin A Kraft, James M Green, Kyle R Thompson
Session ratings of perceived exertion (SRPE) during resistance training may be influenced by specific exercise parameters. The purpose of this study was to examine the influence of work rate (total work per unit time) and recording time on SRPE. Participants performed 3 exercise bouts of bench press, lat pull-down, overhead press, upright row, triceps extension, and biceps curl at 60% of predetermined 1 repetition maximum according to these protocols: (a) 3 sets × 8 repetitions (reps) × 1.5 minutes of recovery, (b) 3 sets × 8 reps × 3 minutes of recovery, and (c) 2 sets × 12 reps × 3 minutes of recovery...
February 2014: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/24378665/work-distribution-influences-session-ratings-of-perceived-exertion-response-during-resistance-exercise-matched-for-total-volume
#18
Justin A Kraft, James M Green, Tyler M Gast
Session ratings of perceived exertion (SRPE) are sensitive to changes in total work volume and work rate during resistance training. This study examined the influence of work distribution (varied load, set, and repetitions [reps]) on SRPE in 2 resistance exercise trials matched for total work volume (sets × reps × percentage of 1 repetition maximum [% 1RM]) and work rate (total work volume/time). Participants completed a low load/high rep (LLHR) trial (2 sets × 12 reps × 3-minute recovery at ∼60% 1RM) and a high load/low rep (HLLR) trial (3 sets × 6 reps × 1...
July 2014: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/24149723/using-bench-press-load-to-predict-upper-body-exercise-loads-in-physically-active-individuals
#19
Del P Wong, Kwan-Lung Ngo, Michael A Tse, Andrew W Smith
This study investigated whether loads for assistance exercises of the upper body can be predicted from the loads of the bench press exercise. Twenty-nine physically active collegiate students (age: 22.6 ± 2.5; weight training experience: 2.9 ± 2.1 years; estimated 1RM bench press: 54.31 ± 14.60 kg; 1RM: body weight ratio: 0.80 ± 0.22; BMI: 22.7 ± 2.1 kg·m(-2)) were recruited. The 6RM loads for bench press, barbell bicep curl, overhead dumbbell triceps extension, hammer curl and dumbbell shoulder press were measured...
2013: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/24030158/how-healthy-is-circuit-resistance-training-following-paraplegia-kinematic-analysis-associated-with-shoulder-mechanical-impingement-risk
#20
Linda M Riek, Paula M Ludewig, Deborah A Nawoczenski
The purpose of the study was to determine whether wheelchair-based circuit resistance training (CRT) exercises place the shoulder at risk for mechanical impingement. Using a novel approach, we created a mechanical impingement risk score for each exercise by combining scapular and glenohumeral kinematic and exposure data. In a case series design, 18 individuals (25-76 yr old) with paraplegia and without substantial shoulder pain participated. The mean mechanical impingement risk scores at 45-60 degrees humerothoracic elevation were rank-ordered from lowest to highest risk as per subacromial mechanical impingement risk: overhead press (0...
2013: Journal of Rehabilitation Research and Development
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