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Quadriceps strength

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https://www.readbyqxmd.com/read/28812035/bioabsorbable-versus-metal-screw-in-the-fixation-of-tibial-tubercle-transfer-a-cadaveric-biomechanical-study
#1
Janne T Nurmi, Ari Itälä, Raine Sihvonen, Petri Sillanpää, Pekka Kannus, Harri Sievänen, Teppo L N Järvinen
BACKGROUND: In tibial tubercle transfer (TTT) procedures, the osteotomized and transferred tibial tubercle is usually fixed into the host bone using metal screws. PURPOSE: To compare the strength of fixation provided by a single bioabsorbable screw versus a metal screw for TTT. STUDY DESIGN: Controlled laboratory study. METHODS: Twenty-two pairs of human cadaveric tibiae were used to compare the fixation strength of a single 4...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28810991/posterior-cruciate-ligament-injuries-associated-with-military-survival-swim-training
#2
Michael S Crowell, John S Mason, Matthew A Posner, Chad A Haley
OBJECTIVES: Posterior cruciate ligament (PCL) injuries are relatively common injuries associated with athletic activities and high-energy trauma. Posterolateral corner (PLC) injuries frequently accompany injury to the PCL. Diagnosis can be challenging and requires a comprehensive history and physical examination. Patients frequently report vague, nonspecific symptoms and the mechanism of injury is often useful in localizing injured structures. Two of the more common mechanisms for PCL injury include a direct blow to the proximal anterior tibia with the knee flexed, as well as a significant knee hyperextension injury...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28803758/association-between-body-weight-and-proximal-tibial-bone-mineral-density-after-bilateral-total-knee-arthroplasty
#3
Yoshinori Ishii, Hideo Noguchi, Junko Sato, Hana Ishii, Koji Todoroki, Shin-Ichi Toyabe
BACKGROUND: Proximal tibial bone mineral density (BMD) has been studied for its potential impact on subsidence and loosening of the tibial component after total knee arthroplasty (TKA). However, no known studies of proximal tibial BMD after TKA have evaluated the effect of major impact factors such as body weight (BW), muscle strength, and level of activity. We aim to determine whether factors such as level of activity, quadriceps strength, BW, gender, age, and prosthetic design affect proximal tibial BMD over the mid- to long-term following TKA...
August 10, 2017: Knee
https://www.readbyqxmd.com/read/28801415/randomised-feasibility-trial-into-the-effects-of-low-frequency-electrical-muscle-stimulation-in-advanced-heart-failure-patients
#4
Stuart Ennis, Gordon McGregor, Thomas Hamborg, Helen Jones, Robert Shave, Sally J Singh, Prithwish Banerjee
OBJECTIVES: Low-frequency electrical muscle stimulation (LF-EMS) may have the potential to reduce breathlessness and increase exercise capacity in the chronic heart failure population who struggle to adhere to conventional exercise. The study's aim was to establish if a randomised controlled trial of LF-EMS was feasible. DESIGN AND SETTING: Double blind (participants, outcome assessors), randomised study in a secondary care outpatient cardiac rehabilitation programme...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28799491/exercise-programmes-for-osteoarthritis-with-different-localization
#5
Sevdalina Lambova
Therapeutic exercises in osteoarthritis (OA) are therapeutic approach with proven efficacy. On the other hand, the different disease form, the lack of established consensus and system for patient education limit the widespread use of therapeutic exercises in clinical practice. The mechanisms of action of therapeutic exercise in OA include the following components e. g., neuromuscular (improvement of proprioception, muscle strength and joint stability), intra-articular (prevention of cartilage degeneration, antiinflammatory effect, improvement of the quality of the joint fluid), periarticular, general health with reduction of cardiovascular risk and psychological components...
August 10, 2017: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/28791612/acl-rehabilitation-progression-where-are-we-now
#6
REVIEW
John T Cavanaugh, Matthew Powers
PURPOSE OF REVIEW: With the increase of publications available to the rehabilitation specialist, there is a need to identify a progression to safely progress the patient through their post-operative ACL reconstruction rehabilitation program. Rehabilitation after ACL reconstruction should follow an evidence-based functional progression with graded increase in difficulty in activities. RECENT FINDINGS: Clinicians should be discouraged not to use strict time frames and protocols when treating patients following ACL reconstruction...
August 8, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28763413/ultrasound-guided-motor-sparing-knee-blocks-for-postoperative-analgesia-following-total-knee-arthroplasty-a-randomized-blinded-study
#7
Olawale A Sogbein, Rakesh V Sondekoppam, Dianne Bryant, David F Johnston, Edward M Vasarhelyi, Steven MacDonald, Brent Lanting, Sugantha Ganapathy, James L Howard
BACKGROUND: Pain following total knee arthroplasty (TKA) is often severe and can inhibit rehabilitation. Motor-sparing analgesic techniques such as periarticular infiltrations and adductor canal blocks have been popularized for knee analgesia since they preserve motor strength and permit early mobilization. Our primary objective was to compare the duration of analgesia from motor-sparing blocks with that of a standard periarticular infiltration. We used the time to first rescue analgesia as the end point...
August 2, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28760130/neglected-bilateral-congenital-dislocation-of-the-patella
#8
Mehmet Ali Tokgöz, Ali Turgay Çavuşoğlu, Tacettin Ayanoğlu, Tarık Elma, Abdurrahman Vural
Congenital dislocation of the patella is a disorder that presents with dysfunction in extensor mechanism. Although congenital dislocation of the patella mostly occurs in children with genetic disorders, it may also occur in totally healthy children, despite rarely. In this article, we report a 16-year-old male patient who referred to our clinic with complaints of gait disturbance, frequent falls, and muscular weakness in lower extremity. The patient had no complaints during walking, but had difficulty in running and walking up and down the stairs...
August 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/28759603/the-isokinetic-strength-profile-of-elite-soccer-players-according-to-playing-position
#9
Robert Śliwowski, Monika Grygorowicz, Radosław Hojszyk, Łukasz Jadczak
The aim of this study was to compare isokinetic strength performance profiles in elite soccer players across different field positions. A total of 111 elite international players of Polish Ekstraklasa (the top division in Poland) were examined during the 2010-2015 seasons. The players were classified into six positional roles: central defenders (CD), external defenders (ED), central midfielders (CM), external midfielders (EM), forwards (F), and goalkeepers (G). The concentric isokinetic strength (peak torque [PT] of quadriceps and hamstrings, H/Q ratios) was calculated for the dominant leg and the non-dominant leg at angular velocity of 1...
2017: PloS One
https://www.readbyqxmd.com/read/28756392/a-comprehensive-strength-testing-protocol-offers-no-clinical-value-in-predicting-risk-of-hamstring-injury-a-prospective-cohort-study-of-413-professional-football-players
#10
Nicol van Dyk, Roald Bahr, Angus F Burnett, Rod Whiteley, Arnhild Bakken, Andrea Mosler, Abdulaziz Farooq, Erik Witvrouw
BACKGROUND: Hamstring injuries remain prevalent across a number of professional sports. In football, the incidence has even increased by 4% per year at the Champions League level over the last decade. The role of muscle strength or strength ratios and their association with risk of hamstring injury remain restricted by small sample sizes and inconclusive results. PURPOSE: The purpose of this study is to identify risk factors for hamstring injury in professional football players in an adequately powered, prospective cohort study...
July 29, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28755131/increase-in-echo-intensity-and-extracellular-to-intracellular-water-ratio-is-independently-associated-with-muscle-weakness-in-elderly-women
#11
Masashi Taniguchi, Yosuke Yamada, Yoshihiro Fukumoto, Shinichiro Sawano, Seigo Minami, Tome Ikezoe, Yuya Watanabe, Misaka Kimura, Noriaki Ichihashi
PURPOSE: The changes in muscle composition and its heterogeneity during aging are associated with muscle weakness in elderly persons independent of decreases in muscle mass or muscle thickness (MT). Both the assessment of echo intensity (EI) with ultrasound imaging and the evaluation of the extracellular water/intracellular water (ECW/ICW) ratio with segmental bioelectrical impedance spectroscopy (BIS) are non-invasive and convenient methods and seem valuable for muscle quality determination...
July 28, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28750958/muscle-strength-and-stiffness-in-resistance-exercise-force-transmission-in-tissues
#12
Hans Chaudhry, Bruce Bukiet, Ellen Z Anderson, Jared Burch, Thomas Findley
Physical therapists and osteopaths want to know the quantitative force transmitted in the tissues during resistance exercise and also the relationship between tissue strength and the specific type of resistance exercise of the skeletal muscles. This paper uses the strain energy function for large deformations associated with the active and passive response of transversely isotropic skeletal muscle tissue to evaluate muscle strength and force transmitted in tissues during resistance exercises for the quadriceps muscle at the knee during isometric training exercise at different knee angles in vivo...
July 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28745525/balance-and-falls-in-acute-exacerbation-of-chronic-obstructive-pulmonary-disease-a-prospective-study
#13
Cristino C Oliveira, Annemarie L Lee, Jennifer McGinley, Gary P Anderson, Ross A Clark, Michelle Thompson, Sandy Clarke, Tamara Baker, Louis B Irving, Linda Denehy
Individuals with chronic obstructive pulmonary disease (COPD) have demonstrated balance impairment and a higher fall incidence. However, these have not been investigated in acute exacerbations of the disease (ECOPD). This study evaluates balance in patients during an ECOPD compared to stable COPD and healthy controls, and examines the fall incidence rate after hospitalisation due to ECOPD compared to individuals with stable COPD. Balance performance of 26 hospitalised patients with ECOPD was compared to 26 community-dwelling participants with stable COPD and 25 matched healthy controls...
July 26, 2017: COPD
https://www.readbyqxmd.com/read/28739425/associations-of-isokinetic-and-isotonic-knee-strength-with-knee-function-and-activity-level-after-anterior-cruciate-ligament-reconstruction-a-prospective-cohort-study
#14
Yong-Hao Pua, Jia-Ying Ho, Suelyn Ai-Sim Chan, Shin-Jiun Khoo, Hwei-Chi Chong
BACKGROUND: Although isokinetic dynamometry often serves as a reference to assess the concurrent validity of weight-machine isotonic strength testing, it is unknown whether isokinetic knee strength is associated with knee function and activity level more strongly than isotonic knee strength in patients with an anterior cruciate ligament reconstruction (ACLR). This study aimed to compare the associations of isokinetic and isotonic knee strength with knee function and work-and-sports activity levels in patients with ACLR...
July 21, 2017: Knee
https://www.readbyqxmd.com/read/28725437/towards-evidence-based-strength-training-a-comparison-of-muscle-forces-during-deadlifts-goodmornings-and-split-squats
#15
Florian Schellenberg, William R Taylor, Silvio Lorenzetti
BACKGROUND: To ensure an efficient and targeted adaptation with low injury risk during strength exercises, knowledge of the participant specific internal loading conditions is essential. The goal of this study was to calculate the lower limb muscles forces during the strength exercises deadlifts, goodmornings and splits squats by means of musculoskeletal simulation. METHODS: 11 participants were assessed performing 10 different variations of split squats by varying the step length as well as the maximal frontal tibia angle, and 13 participants were measured performing deadlift and goodmorning exercises...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28720481/knee-extension-and-flexion-strength-asymmetry-in-human-immunodeficiency-virus-positive-subjects-a-cross-sectional-study
#16
Vitor H F Oliveira, Susana L Wiechmann, Argéria M S Narciso, Rafael Deminice
BACKGROUND: Human Immunodeficiency Virus positive subjects present impairment in muscle function, neural activation, balance, and gait. In other populations, all of these factors have been associated with muscle strength asymmetry. OBJECTIVE: To investigate the existence of muscle strength asymmetry between dominant and non-dominant lower limbs and to determine the hamstrings-to-quadriceps strength ratio in Human Immunodeficiency Virus positive subjects. METHODS: In this cross-sectional study, 48 subjects were included (22 men and 26 women; mean age 44...
July 3, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28714825/quadriceps-and-patient-reported-function-in-acl-reconstructed-patients-a-principal-component-analysis
#17
Grant E Norte, Jay N Hertel, Susan A Saliba, David R Diduch, Joseph M Hart
CONTEXT: Assessment of physical function for individuals after ACL reconstruction (ACL-R) is complex and warrants the use of diverse evaluation strategies. To maximize the efficiency of assessment, there is a need to identify tests that provide the most meaningful information about this population. OBJECTIVE: To investigate underlying constructs of quadriceps muscle function that uniquely describe aspects of performance in patients after ACL-R, and establish clinical thresholds for measures able to classify patients with and without ACL-R...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28707752/analysis-of-the-correlation-between-knee-extension-torque-and-patellar-tendon-elastic-property
#18
P Mannarino, K M M Lima, C R C Fontenelle, T T Matta, B F de Salles, R Simão, L F Oliveira
PURPOSE: Quadriceps strength and patellar tendon (PT) are directly linked and intimately related to daily activities and lower limb function. However, the correlation between knee extension torque (KT) and PT Young's modulus (E) measured directly is still unknown. METHOD: We used supersonic shearwave imaging (SSI) to evaluate the elastic property of PT in healthy young men and analysed its correlation with KT. Twenty-two healthy young males were included and both knees were examined...
July 14, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28704311/acute-neuromuscular-and-endocrine-responses-to-two-different-compound-exercises-squat-versus-deadlift
#19
Matthew J Barnes, Adam Miller, Daniel Reeve, Robin Jc Stewart
Anecdotally, it is believed that the deadlift exercise brings about greater levels of central fatigue than other exercises; however no empirical evidence exists to support this view. Additionally, little is known about the acute endocrine response to heavy deadlift exercise and how this may differ to other similar compound exercises. Therefore, the aim of this study was to identify and compare the acute, neuromuscular and endocrine responses to squat and deadlift exercise. Ten resistance trained males completed 8 sets of 2 repetitions at 95 % of one repetition maximum...
July 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28704309/effect-of-three-different-muscle-action-training-protocols-on-knee-strength-ratios-and-performance
#20
Cassio V Ruas, Lee E Brown, Camila D Lima, Pablo B Costa, Ronei S Pinto
Hamstring to quadriceps (H:Q) ratios are often used to assess strength imbalances. The aims of this study were to compare three different muscle action training protocols on H:Q strength balance and functional performance. Forty untrained males (age: 22.87 ± 2.28 y, mass: 70.66 ± 11.049 kg, ht: 174.29 ± 6.90 cm) performed 6 weeks of training on an isokinetic dynamometer. They were randomly assigned to one of 4 groups; concentric quadriceps and concentric hamstring (CON/CON), eccentric quadriceps and eccentric hamstring (ECC/ECC), concentric quadriceps and eccentric hamstring (CON/ECC), or no training (CNTRL)...
July 12, 2017: Journal of Strength and Conditioning Research
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