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https://www.readbyqxmd.com/read/28338383/inter-session-reliability-of-isokinetic-strength-testing-in-knee-and-elbow-extension-and-flexion-using-the-bte-primusrs
#1
Alexander Törpel, Tim Becker, Angelina Thiers, Dennis Hamacher, Lutz Schega
CONTEXT: The use of isokinetic dynamometers playing an important role in different settings of sports and medicine. Therefore, a high reliability of these devices is required. OBJECTIVE: The aim of this study was to examine the inter-session reliability of the dynamometer BTE PrimusRS regarding to the isolated single-joint exercises extension / flexion of the knee and elbow for isokinetic testing. DESIGN: Inter-session reliability. SETTING: Clinical settings and sports science...
March 24, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28333173/functional-and-volumetric-analysis-of-the-pectoralis-major-muscle-after-submuscular-breast-augmentation
#2
Ana Claudia Roxo, Fabio Xerfan Nahas, Nadia Cristina Pinheiro Rodrigues, José Inácio Salles, Victor Rodrigues Amaral Cossich, Claudio Cardoso de Castro, Jose Horacio Aboudib, Ruy Garcia Marques
Background: Dual plane breast augmentation is a technical variation of the submuscular plane described as a technique that reduces contour deformities due to contraction of the pectoralis major muscle and lower risk of double-bubble deformity associated with breast ptosis. Despite improvement in the aesthetic aspect, there is still no consensus whether this technique affects the function of the pectoralis major muscle. Objectives: The aim of this study was to correlate functional with volumetric changes associated with dissection of the muscle origin in submuscular breast augmentation...
January 20, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28327461/muscle-strength-is-impaired-in-men-but-not-in-women-living-with-hiv-taking-antiretroviral-therapy
#3
Vitor Hf Oliveira, Susana L Wiechmann, Argéria Ms Narciso, Allison R Webel, Rafael Deminice
BACKGROUND: There is evidence that HIV Antiretroviral Therapy adverse effects may be sex-dependent, but data examing these sex differences in muscle strength is scarce. Our aim was to compare dynamic and isokinetic parameters of muscle strength between HIV-infected men and women to HIV-uninfected subjects. METHODS: In this cross-sectional study, muscle strength was evaluated in 44 HIV-infected (20 men, 24 women) and 25 age-, race- and body mass index-matched HIV-uninfected subjects (11 men, 14 women)...
March 22, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28324151/higher-hamstring-to-quadriceps-isokinetic-strength-ratio-during-the-first-post-operative-months-in-patients-with-quadriceps-tendon-compared-to-hamstring-tendon-graft-following-acl-reconstruction
#4
Felix Fischer, Christian Fink, Elmar Herbst, Christian Hoser, Caroline Hepperger, Cornelia Blank, Peter Gföller
PURPOSE: The aim of this study was to compare isokinetic quadriceps and hamstring muscle strength in patients following anterior cruciate ligament (ACL) reconstruction who received either hamstring (HT) or quadriceps (QT) tendon autografts at two time intervals within the first year after surgery. METHODS: One hundred twenty-four patients, 81 males (age 22.0 ± 6.2 years) and 43 females (age 20.9 ± 8.7 years), participated in this study. ACL reconstruction was performed with either quadriceps tendon autografts (QT; n = 61) or hamstring tendon autografts (HT; n = 63)...
March 21, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28321637/the-time-course-of-short-term-hypertrophy-in-the-absence-of-eccentric-muscle-damage
#5
Matt S Stock, Jacob A Mota, Ryan N DeFranco, Katherine A Grue, A Unique Jacobo, Eunhee Chung, Jordan R Moon, Jason M DeFreitas, Travis W Beck
BACKGROUND: It has been proposed that the increase in skeletal muscle mass observed during the initial weeks of initiating a resistance training program is concomitant with eccentric muscle damage and edema. PURPOSE: We examined the time course of muscle hypertrophy during 4 weeks of concentric-only resistance training. METHODS: Thirteen untrained men performed unilateral concentric-only dumbbell curls and shoulder presses twice per week for 4 weeks...
March 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28321428/high-grade-partial-and-retracted-2-cm-proximal-hamstring-ruptures-nonsurgical-treatment-revisited
#6
Jonathan R Piposar, Amrit V Vinod, Joshua R Olsen, Edward Lacerte, Suzanne L Miller
BACKGROUND: High-grade partial proximal hamstring tears and complete tears with retraction less than 2 cm are a subset of proximal hamstring injuries where, historically, treatment has been nonoperative. It is unknown how nonoperative treatment compares with operative treatment. HYPOTHESIS: The clinical and functional outcomes of nonoperative and operative treatment of partial/complete proximal hamstring tears were compared. We hypothesize that operative treatment of these tears leads to better clinical and functional results...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28315596/effects-of-hip-and-trunk-muscle-strengthening-on-hip-function-and-lower-limb-kinematics-during-step-down-task
#7
Vanessa Lara Araújo, Thales Rezende Souza, Viviane Otoni do Carmo Carvalhais, Aline Castro Cruz, Sérgio Teixeira Fonseca
BACKGROUND: Strengthening of the hip and trunk muscles has the potential to change lower limb kinematic patterns, such as excessive hip medial rotation and adduction during weight-bearing tasks. This study aimed to investigate the effect of hip and trunk muscles strengthening on hip muscle performance, hip passive properties, and lower limb kinematics during step-down task in women. METHODS: Thirty-four young women who demonstrated dynamic knee valgus during step-down were divided into two groups...
February 27, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28314618/drop-punt-kicking-induces-eccentric-knee-flexor-weakness-associated-with-reductions-in-hamstring-electromyographic-activity
#8
Steven J Duhig, Morgan D Williams, Geoffrey M Minett, David Opar, Anthony J Shield
OBJECTIVES: To examine the effect of 100 drop punt kicks on isokinetic knee flexor strength and surface electromyographic activity of bicep femoris and medial hamstrings. DESIGN: Randomized control study. METHODS: Thirty-six recreational footballers were randomly assigned to kicking or control groups. Dynamometry was conducted immediately before and after the kicking or 10min of sitting (control). RESULTS: Eccentric strength declined more in the kicking than the control group (p<0...
September 20, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28298168/comparison-of-two-methodological-approaches-for-the-mechanical-analysis-of-single-joint-isoinertial-movement-using-a-customised-isokinetic-dynamometer
#9
Mathieu Plautard, Gaël Guilhem, Vincent Fohanno, Antoine Nordez, Christophe Cornu, Arnaud Guével
Compared to isokinetic and isometric tests, isoinertial movements have been poorly used to assess single-joint performance. Two calculation procedures were developed to estimate mechanical performance during single-joint isoinertial movements performed on a customised isokinetic dynamometer. The results were also compared to appreciate the effects of measurement systems and calculation procedures. Five participants performed maximal knee extensions at four levels of resistance (30, 50, 70 and 90% of the one-repetition maximum, 1-RM)...
March 16, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28295148/reliability-and-minimum-detectable-change-for-common-clinical-physical-function-tests-in-sarcopenic-men-and-women
#10
Nathaniel D M Jenkins, Joel T Cramer
OBJECTIVES: To determine the test-retest reliability and minimum detectable change scores for seven common clinical measurements of muscle strength and physical function in a multiethnic sample of sarcopenic, malnourished men and women. DESIGN: Each participant visited the laboratory seven times over 25 to 26 weeks. Reliability was assessed for each measurement from Familiarization 1 to Familiarization 2 (R1), Familiarization 2 to baseline testing (R2), Familiarization 3 to 12-week testing (R3), and Familiarization 4 to 24-week testing (R4)...
March 15, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28294692/lower-extremity-isokinetic-strength-ratios-of-elite-springboard-and-platform-diving-athletes
#11
Amilton Vieira, Savio Alex, André Martorelli, Lee E Brown, Ricardo Moreira, Martim Bottaro
OBJECTIVES: The purpose of the present study was to examine knee extensor and flexor muscle strength ratios of an elite group of diving athletes. METHODS: Sixteen divers (10 females and 6 males) from the Brazil national team were assessed for lower-body strength. They had participated in international competitions such as the 2016 Olympic Games and 2015 Pan American Games. The dynamic concentric torque of their knee flexor and extensor muscles were evaluated using a Biodex isokinetic dynamometer...
March 15, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28291448/reliability-responsiveness-and-criterion-validity-of-the-kiio-sensor-a-new-tool-for-assessment-of-muscle-function
#12
Patrick Grabowski, Michelle Narveson, Stephen Siegle
Musculoskeletal injuries are a leading cause of disability in both the general population and military, and the ability to effectively quantify musculoskeletal function remains problematic. The aim of the current study is to investigate the reliability, responsiveness, and criterion validity of the kiio Sensor for measurement of muscle strength, a key aspect of comprehensive functional assessment. Forty-four (24 male, 20 female) physically active civilian adults (mean [SD] = 21.2 [1.5] years of age) with no history of upper extremity injuries in the last year and no current complaints of pain, weakness, or functional limitation completed two sessions of maximum shoulder external rotation contractions...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28291438/isokinetic-evaluation-of-wrist-muscle-strength-in-patients-of-carpal-tunnel-syndrome
#13
Mehmet Ağırman, Adnan Kara, Oğuz Durmuş, İlknur Saral, Engin Çakar
OBJECTIVES: This study aims to investigate the isokinetic characteristics of wrist strength in flexion, extension, supination, pronation, radial, and ulnar deviation in patients with moderate or severe carpal tunnel syndrome (CTS). PATIENTS AND METHODS: Thirteen patients (23 hands) (2 males, 11 females; mean age 45 years; range 29 to 60 years) with moderate or severe CTS were compared to six healthy control subjects (12 hands) (2 males, 4 females; mean age 41 years; range 27 to 63 years) in this study, which was conducted between January 2016 and April 2016...
April 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/28289890/kinematic-analysis-of-stair-climbing-in-rotating-platform-cruciate-retaining-and-posterior-stabilized-mobile-bearing-total-knee-arthroplasties
#14
Koji Murakami, Satoshi Hamai, Ken Okazaki, Satoru Ikebe, Hiroyuki Nakahara, Hidehiko Higaki, Takeshi Shimoto, Hideki Mizu-Uchi, Umito Kuwashima, Yukihide Iwamoto
INTRODUCTION: The aim of our study was to compare and contrast the effects of two types of mobile-bearing total knee arthroplasties (TKA), namely, the cruciate-retaining (CR) and posterior-stabilized (PS) TKAs, on clinical outcomes and in vivo kinematics during stair climbing. MATERIALS AND METHODS: The Press-Fit Condylar Sigma rotating platform was used for both CR and PS TKAs. Patient-reported outcomes were assessed using the 2011 Knee Society Score. Quadriceps muscle strength was evaluated by isokinetic dynamometry...
March 13, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28282794/kinesio-taping-does-not-alter-muscle-torque-muscle-activity-or-jumping-performance-in-professional-soccer-players-a-randomized-placebo-controlled-blind-clinical-trial
#15
Igor Phillip Dos Santos Glória, Tabajara de Oliveira Gonzalez, Tabajara de Oliveira Gonzalez, Ernesto Cesar Pinto Leal Junior, Cid André Fidelis de Paula Gomes, Carolina Marciela Herpich, Fernanda Colella Antonialli, Felipe Serenza, Lucas de Souza Calheira, Eric Edmur Camargo Arruda, Paulo Roberto Garcia Lucareli, Daniela Aparecida Biasotto-Gonzalez
INTRODUCTION: Kinesio taping consists of the attachment of a thin elastic tape over specific muscles, the thickness of which is similar to that of the epidermis. OBJECTIVE: The aim of the present study was to compare the effect of Kinesio taping and placebo taping on muscle torque, muscle activity and jumping performance soccer players. METHODS: Thirty athletes were randomly allocated to two groups (Group A: Kinesio taping and Group B: placebo taping)...
March 3, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28282504/soleus-atrophy-is-common-after-the-nonsurgical-treatment-of-acute-achilles-tendon-ruptures
#16
Juuso Heikkinen, Iikka Lantto, Tapio Flinkkila, Pasi Ohtonen, Jaakko Niinimaki, Pertti Siira, Vesa Laine, Juhana Leppilahti
BACKGROUND: It remains controversial whether nonsurgical or surgical treatment provides better calf muscle strength recovery after an acute Achilles tendon rupture (ATR). Recent evidence has suggested that surgery might surpass nonsurgical treatment in restoring strength after an ATR. PURPOSE: To assess whether magnetic resonance imaging (MRI) findings could explain calf muscle strength deficits and the difference between nonsurgical and surgical treatments in restoring calf muscle strength...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28280471/eccentric-exercise-program-design-a-periodization-model-for-rehabilitation-applications
#17
Michael O Harris-Love, Bryant A Seamon, Tomas I Gonzales, Haniel J Hernandez, Donte Pennington, Brian M Hoover
The applied use of eccentric muscle actions for physical rehabilitation may utilize the framework of periodization. This approach may facilitate the safe introduction of eccentric exercise and appropriate management of the workload progression. The purpose of this data-driven Hypothesis and Theory paper is to present a periodization model for isokinetic eccentric strengthening of older adults in an outpatient rehabilitation setting. Exemplar and group data are used to describe the initial eccentric exercise prescription, structured familiarization procedures, workload progression algorithm, and feasibility of the exercise regimen...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28278036/emission-factors-of-particulate-matter-polycyclic-aromatic-hydrocarbons-and-levoglucosan-from-wood-combustion-in-south-central-chile
#18
Jorge Jimenez, Oscar Farias, Roberto Quiroz, Jorge Yañez
In south central Chile, wood stoves have been identified as an important source of air pollution in populated areas. Eucalyptus (eucalyptus globulus), Chilean oak (nothofagus oblique) and mimosa (acacia dealbata) were burned in a single chamber slow combustion wood stove at a controlled testing facility located at the University of Concepción, Chile. 2.7-3.1 kg of firewood were combusted in each experiment while continuously monitoring temperature, exhaust gases, burn rate, and collecting particulate matter samples in Teflon filters under isokinetic conditions for polycyclic aromatic hydrocarbons and levoglucosan analyses...
February 22, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28273424/is-quadriceps-tendon-autograft-a-better-choice-than-hamstring-autograft-for-anterior-cruciate-ligament-reconstruction
#19
Etienne Cavaignac, Benoit Coulin, Philippe Tscholl, Nik Nik Mohd Fatmy, Victoria Duthon, Jacques Menetrey
BACKGROUND: The quadriceps tendon (QT) autograft is known as an effective graft for anterior cruciate ligament (ACL) reconstruction and shows a similar functional outcome to the bone-patellar tendon-bone (BPTB) in randomized controlled trials, with a lesser incidence of complications. Up until now, only 2 studies have compared QT to hamstring tendon (HT) autograft. HYPOTHESIS: The functional outcomes of the QT technique are at least as good as those of the HT technique, with the same morbidity...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28271312/chronic-effects-of-superimposed-electromyostimulation-during-cycling-on-aerobic-and-anaerobic-capacity
#20
Sebastian Mathes, Niklas Lehnen, Tobias Link, Wilhelm Bloch, Joachim Mester, Patrick Wahl
PURPOSE: To examine if chronic endurance training by means of simultaneously applied, superimposed electromyostimulation (EMS) can be used to improve performance and physiological core parameters compared to the traditional cycling. METHODS: Twenty-one male subjects (VO2peak 55.2 ± 5.1 ml min(- 1) kg(- 1)) were assigned to either a cycling (C) or cycling with superimposed EMS (C + E) group. Before and after the 4-week training period, including 14 sessions of moderate cycling [60 min at 60% peak power output (PPO)], participants performed a 20-min time-trial, a step test to exhaustion, a 30-s isokinetic sprint test, and maximum force- and power-tests...
March 7, 2017: European Journal of Applied Physiology
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