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https://www.readbyqxmd.com/read/28706824/pectoralis-major-repair-with-unicortical-button-fixation-and-suture-tape
#1
Anthony Sanchez, Marcio B Ferrari, Salvatore J Frangiamore, George Sanchez, Bradley M Kruckeberg, Matthew T Provencher
Although injuries of the pectoralis major muscle are generally uncommon, ruptures of the pectoralis major are occasionally seen in younger, more active patients who participate in weightlifting activities. These injuries usually occur during maximal contraction of the muscle, while in extension and external rotation. In the case of a rupture, operative treatment is advocated especially in young, active patients regardless of the chronicity of the injury. Various surgical techniques for reattachment of the avulsed tendon have been described, but bone tunnel and suture anchor repair techniques are most widely used...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28704245/inciting-events-associated-with-lumbar-facet-joint-pain
#2
Charles A Odonkor, Yian Chen, Peju Adekoya, Bryan J Marascalchi, Hira Chaudhry-Richter, Teresa Tang, Christopher Abruzzese, Berklee K Cohen, Steven P Cohen
BACKGROUND: Low back pain is the leading cause of years lost to disability with approximately 15%-25% of the chronic back pain population suffering from lumbar facet arthropathy. No large-scale study has sought to systematically identify inciting events for lumbar facet arthropathy. The aim of this study is to quantify the proportion of individuals with lumbar facetogenic pain who report a specific precipitating event(s) and to determine if there is a correlation between these events and treatment outcome...
July 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28670532/are-predictive-equations-for-estimating-resting-energy-expenditure-accurate-in-asian-indian-male-weightlifters
#3
Mini Joseph, Riddhi Das Gupta, L Prema, Mercy Inbakumari, Nihal Thomas
BACKGROUND: The accuracy of existing predictive equations to determine the resting energy expenditure (REE) of professional weightlifters remains scarcely studied. Our study aimed at assessing the REE of male Asian Indian weightlifters with indirect calorimetry and to compare the measured REE (mREE) with published equations. A new equation using potential anthropometric variables to predict REE was also evaluated. MATERIALS AND METHODS: REE was measured on 30 male professional weightlifters aged between 17 and 28 years using indirect calorimetry and compared with the eight formulas predicted by Harris-Benedicts, Mifflin-St...
July 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28660143/distal-triceps-injuries-including-snapping-triceps-a-systematic-review-of-the-literature
#4
Kimberley Shuttlewood, James Beazley, Christopher D Smith
AIM: To review current literature on types of distal triceps injury and determine diagnosis and appropriate management. METHODS: We performed a systematic review in PubMed, Cochrane and EMBASE using the terms distal triceps tears and snapping triceps on the 10(th) January 2017. We excluded all animal, review, foreign language and repeat papers. We reviewed all papers for relevance and of the papers left we were able to establish the types of distal triceps injury, how these injuries are diagnosed and investigated and the types of management of these injuries including surgical...
June 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28644193/heel-raised-foot-posture-do-not-affect-trunk-and-lower-extremity-biomechanics-during-a-barbell-back-squat-in-recreational-weightlifters
#5
Szu-Ping Lee, Carrie Gillis, Javier J Ibarra, Derek Oldroyd, Ryan Zane
It is claimed that weightlifting shoes with a raised heel may lead to a more upright trunk posture, and thus reduce the risk of back injuries during a barbell back squat. These proclaimed biomechanical effects have not been thoroughly investigated. The purpose of this study was to compare trunk and lower extremity biomechanics during barbell back squats in 3 foot postures.14 recreational weightlifters (7 male and 7 female) between the ages of 18-50 performed barbell back squats in 3 conditions (barefoot on a flat surface, barefoot on a heel-raised platform, and wearing heel-raised weightlifting shoes) at 80% of their 1-RM...
June 19, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28585961/multi-responsive-actuators-based-on-a-graphene-oxide-composite-intelligent-robot-and-bioinspired-applications
#6
Luzhuo Chen, Mingcen Weng, Peidi Zhou, Lingling Zhang, Zhigao Huang, Wei Zhang
Carbon-based electrothermal or photothermal actuators have attracted intense attention recently. They can directly convert electrical or light energy into thermal energy and exhibit obvious deformations. However, if the actuation mechanism is only limited to thermal expansion, the deformation amplitude is difficult to increase further. Moreover, complex shape-deformation is still challenging. Although a few materials were reported to realize twisting or untwisting actuation by cutting the samples into strips along different orientations, each single strip could perform only one shape-deformation mode...
July 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28538316/load-absorption-force-time-characteristics-following-the-second-pull-of-weightlifting-derivatives
#7
Timothy J Suchomel, Jason P Lake, Paul Comfort
Suchomel, TJ, Lake, JP, and Comfort, P. Load absorption force-time characteristics following the second pull of weightlifting derivatives. J Strength Cond Res 31(6): 1644-1652, 2017-The purpose of this study was to compare the load absorption force-time characteristics of weightlifting catching and pulling derivatives. Twelve resistance-trained men performed repetitions of the hang power clean (HPC), jump shrug (JS), and hang high pull (HHP) on a force platform with 30, 45, 65, and 80% of their 1-repetition maximum HPC...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538310/enhancing-digital-video-analysis-of-bar-kinematics-in-weightlifting-a-case-study
#8
Torstein E Dæhlin, Tron Krosshaug, Loren Z F Chiu
Dæhlin, TE, Krosshaug, T, and Chiu, LZF. Enhancing digital video analysis of bar kinematics in weightlifting: a case study. J Strength Cond Res 31(6): 1592-1600, 2017-Weightlifting technique can be objectively assessed from two-dimensional video recordings. Despite its importance, participants' bar trajectories in research involving the snatch or clean exercises are often not reported, potentially due to the time required to digitize video. The purpose of this investigation was to evaluate the use of a light-emitting diode (LED)-based marker, digital video, and open-source software to automatically track the bar end during weightlifting exercises...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538307/can-cold-water-immersion-enhance-recovery-in-elite-olympic-weightlifters-an-individualized-perspective
#9
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/28533317/cardiovascular-toxicity-of-illicit-anabolic-androgenic-steroid-use
#10
Aaron L Baggish, Rory B Weiner, Gen Kanayama, James I Hudson, Michael T Lu, Udo Hoffmann, Harrison G Pope
BACKGROUND: Millions of individuals have used illicit anabolic-androgenic steroids (AAS), but the long-term cardiovascular associations of these drugs remain incompletely understood. METHODS: Using a cross-sectional cohort design, we recruited 140 experienced male weightlifters 34 to 54 years of age, comprising 86 men reporting ≥2 years of cumulative lifetime AAS use and 54 nonusing men. Using transthoracic echocardiography and coronary computed tomography angiography, we assessed 3 primary outcome measures: left ventricular (LV) systolic function (left ventricular ejection fraction), LV diastolic function (early relaxation velocity), and coronary atherosclerosis (coronary artery plaque volume)...
May 23, 2017: Circulation
https://www.readbyqxmd.com/read/28515974/the-effect-of-fatigue-on-upper-quarter-y-balance-test-scores-in-recreational-weightlifters-a-randomized-controlled-trial
#11
Trenton D Salo, Eric Chaconas
BACKGROUND: A paucity of research currently exists for upper extremity return to sport testing. The Upper Quarter Y-Balance Test (YBT-UQ) is a clinical test of closed kinetic chain performance with demonstrated reliability. Prior investigations of the YBT-UQ were conducted with individuals in a resting state and no comparison to performance in a fatigued state has been conducted. PURPOSE: To examine the effect of upper extremity fatigue on the performance of the YBT-UQ in recreational weightlifters...
April 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28507633/deep-vein-thrombosis-in-upper-limb-in-a-weightlifter
#12
Montserrat Pérez Pinar, Regina Pastor Toledo, Luis Broseta Viana, Julián Solís García Del Pozo
AIM: We report an unusual case of a male weightlifter with upper extremity venous thrombosis. CASE PRESENTATION: Thrombosis affecting subclavian-axillo-humeral venous trunk produced by the compression of these veins by the trained muscles of the shoulder girdle (Paget-Schroetter syndrome) has been reported. During the study, a renal carcinoma was detected. Renal carcinoma has rarely been associated with thrombosis in the upper extremities. CONCLUSION: This case shows the importance of performing a complete study to rule out malignancies in patients with unusual venous thromboembolism...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28492953/muscle-dysmorphia-detection-of-the-use-abuse-of-anabolic-adrogenic-steroids-in-a-spanish-sample
#13
Irene González-Martí, Juan Gregorio Fernández-Bustos, Onofre Ricardo Contreras Jordán, Marina Sokolova
Debido a una distorsión en la imagen corporal, las personas que padecen Dismorfia Muscular se perciben menos musculosas de lo que son en realidad. Con el fin de aumentar su musculatura, algunas de estas personas hacen uso de hormonas cuya función principal es la del aumento del tamaño muscular. Por lo que el objetivo de este estudio es conocer la prevalencia del uso de hormonas en personas afectadas por Dismorfia Muscular. 562 hombres y 172 mujeres fisicoculturistas y levantadores de pesas, a los que se le administraron diferentes cuestionarios para conocer, primero si padecían el trastorno, y después en qué porcentaje usaban hormonas la muestra afectada...
April 12, 2017: Adicciones
https://www.readbyqxmd.com/read/28486331/effect-of-body-position-on-force-production-during-the-isometric-mid-thigh-pull
#14
George K Beckham, Kimitake Sato, Satoshi Mizuguchi, G Gregory Haff, Michael H Stone
Various body positions have been used in the scientific literature when performing the isometric mid-thigh pull resulting in divergent results. We evaluated force production in the isometric mid-thigh pull in bent (125° knee and 125° hip angles) and upright (125° knee, 145° hip angle) positions in subjects with (>6 months) and without (< 6 months) substantial experience using weightlifting derivatives. A mixed-design ANOVA was used to evaluate the effect of pull position and weightlifting experience on peak force, force at 50ms, 90ms, 200ms, and 250ms...
May 5, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28475465/food-restriction-alters-salivary-cortisol-and-%C3%AE-amylase-responses-to-a-simulated-weightlifting-competition-without-significant-performance-modification
#15
Alexandre Durguerian, Edith Filaire, Catherine Drogou, Clément Bougard, Mounir Chennaoui
The aim of this investigation was to evaluate the effect of a 6-day food restriction period on the physiological responses and performance of 11 high-level weightlifters. After a period of weight maintenance (T2), they were assigned into two groups depending on whether they lost (Diet group, n = 6) or maintained their body weight (Control group, n = 5) during the course of those 6 days. An evaluation of performance and the measurement of salivary cortisol concentrations and salivary α-amylase (sAA) activity were performed during a simulated weightlifting competition which took place at T2, after a 6-day period of food restriction (T3)...
May 5, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28426514/comparison-of-the-hang-high-pull-and-loaded-jump-squat-for-the-development-of-vertical-jump-and-isometric-force-time-characteristics
#16
Dustin J Oranchuk, Tracey L Robinson, Zachary J Switaj, Eric J Drinkwater
Weightlifting movements have high skill demands and require expert coaching. Loaded jumps have a comparably lower skill demand, but may be similarly effective for improving explosive performance. The purpose of this study was to compare vertical jump performance, isometric force, and rate of force development (RFD) following a ten-week intervention employing the hang high-pull (hang-pull) or trap-bar jump squat (jump-squat). Eighteen NCAA Division II swimmers (8 males, 10 females) with at least one year of resistance training experience volunteered to participate...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28379908/effects-of-long-term-high-load-exercise-on-the-anatomy-of-the-hip-joints-a-preliminary-report
#17
Yawei Song, Xiyuan Zhang, Ke Rong
The aim of this study was to assess the impact of different sports on hip joint anatomic parameters in athletes. This was a cross-sectional study of eight male trampolinists, eight male weightlifters, and eight male volunteers enrolled in July 2014. Hip joint anatomic parameters were measured from plain radiographs taken at the level of the lesser trochanter center. Data were compared between groups using the χ-test or one-way analysis of variance with the Bonferroni post-hoc test. There were no significant differences among groups in age, height, or weight...
April 4, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28367368/external-kinetics-of-the-kettlebell-snatch-in-amateur-lifters
#18
James A Ross, Justin W L Keogh, Cameron J Wilson, Christian Lorenzen
BACKGROUND: Kettlebell lifting has gained increased popularity as both a form of resistance training and as a sport, despite the paucity of literature validating its use as a training tool. Kettlebell sport requires participants to complete the kettlebell snatch continuously over prolonged periods of time. Kettlebell sport and weightlifting involve similar exercises, however, their traditional uses suggest they are better suited to training different fitness qualities. This study examined the three-dimensional ground reaction force (GRF) and force applied to the kettlebell over a 6 min kettlebell snatch set in 12 kettlebell-trained males...
2017: PeerJ
https://www.readbyqxmd.com/read/28347219/the-national-football-league-225-bench-press-test-and-the-size-weight-illusion
#19
Paul E Luebbers, Gavin Buckingham, Michael S Butler
The purpose of this study was to test reports that size and arrangement manipulations of weight plates (i.e., inducing a size-weight illusion [SWI]) would have an effect on athletic weightlifting performance. The participants were 72 experienced, weight-trained collegiate American football players. Across 3 weeks, each athlete performed three different repetitions-to-fatigue bench press tests (NFL-225, SWI-225, and SWI-215). A multiple regression revealed a positive association between participants' strength relative to the test load and repetitions for NFL-225 and SWI-215, but no association with SWI-225...
January 1, 2017: Perceptual and Motor Skills
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
#20
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...
March 13, 2017: Journal of Clinical Laboratory Analysis
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