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https://www.readbyqxmd.com/read/29740557/hip-and-trunk-muscles-activity-during-nordic-hamstring-exercise
#1
Shideh Narouei, Atsushi Imai, Hiroshi Akuzawa, Kiyotaka Hasebe, Koji Kaneoka
The nordic hamstring exercise (NHE) is a dynamic lengthening hamstring exercise that requires trunk and hip muscles activation. Thigh muscles activation, specifically hamstring/quadriceps contractions has been previously examined during NHE. Trunk and hip muscles activity have not been enough studied. The aim of this study was to analyze of hip and trunk muscles activity during NHE. Surface electromyography (EMG) and kinematic data were collected during NHE. Ten healthy men with the age range of 21-36 years performed two sets of two repetitions with downward and upward motions each of NHE...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29685059/hamstring-muscle-use-in-females-during-hip-extension-and-the-nordic-hamstring-exercise-an-fmri-study
#2
Daniel J Messer, Matthew N Bourne, Morgan D Williams, Aiman Al Najjar, Anthony J Shield
Study Design Cross-sectional study. Background Understanding hamstring muscle activation patterns in resistance training exercises may have implications for the design of strength training and injury prevention programs. Unfortunately, surface electromyography studies have reported conflicting results with regard to hamstring muscle activation patterns in women. Objectives To determine the spatial patterns of hamstring muscle activity during the 45º hip-extension and Nordic hamstring exercises, in females using functional magnetic resonance imaging...
April 23, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29655872/-contribution-of-the-scrotal-flap-for-the-coverage-of-ischial-and-perineal-pressure-ulcers
#3
M Vantomme, R Viard, R Aimard, P-L Vincent, J-P Comparin, D Voulliaume
INTRODUCTION: The ischiatric pressure sore is a common pathology in rehabilitated spinal cord injured people, despite careful prevention. Medical treatment by discharge and directed healing is not always sufficient and surgery using local musculocutaneous flaps is often essential. Unfortunately, recidivism is frequent and the availability of local flaps is limited. The scrotal flap is an excellent complement to classic flaps, gluteal flaps or hamstrings. It can be used alone or in addition to another musculocutaneous flap, in first or second intention...
April 11, 2018: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/29613884/hamstring-co-contraction-in-the-early-stage-of-rehabilitation-following-anterior-cruciate-ligament-reconstruction-a-longitudinal-study
#4
Hongyun Song, Xuesong Dai, Jianhua Li, Sunan Zhu
OBJECTIVE: Hamstring co-contraction may affect recovery from anterior cruciate ligament reconstruction (ACLR). We aimed to evaluate the changes in hamstring co-contraction during the early postoperative stages. DESIGN: Twenty-five patients with ACLR were followed up for 1-3 months postoperatively, during which the Lysholm and International Knee Documentation Committee (IKDC) questionnaires were completed and surface electromyograms (sEMG) were assessed during terminal knee extension maximum voluntary contraction (TKE-MVC) and step-up tests...
April 2, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29601221/comparison-of-hip-extensor-muscle-activity-including-the-adductor-magnus-during-three-prone-hip-extension-exercises
#5
Han-I Ko, Seung-Yeon Jeon, Si-Hyun Kim, Kyue-Nam Park
OBJECTIVES: This study compared the role of the adductor magnus muscle (Amag) as a hip extensor while performing active prone hip extension (PHE), PHE with hip adduction (PHE-ADD), and PHE with hip abduction (PHE-ABD) with the gluteus maximus (Gmax) and hamstrings. METHODS: The study recruited 22 healthy participants. Electromyography data were recorded from the Amag, Gmax, and medial and lateral hamstrings during PHE, PHE-ADD, and PHE-ABD. Normalized electromyographic data were examined using one-way, repeated-measures analyses of variance...
March 30, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29587833/use-of-hybrid-assistive-limb-hal-%C3%A2-for-a-postoperative-patient-with-cerebral-palsy-a-case-report
#6
Yuki Mataki, Hiroshi Kamada, Hirotaka Mutsuzaki, Yukiyo Shimizu, Ryoko Takeuchi, Masafumi Mizukami, Kenichi Yoshikawa, Kazushi Takahashi, Mayumi Matsuda, Nobuaki Iwasaki, Hiroaki Kawamoto, Yasuyoshi Wadano, Yoshiyuki Sankai, Masashi Yamazaki
BACKGROUND: The Hybrid Assistive Limb (HAL® ) is an exoskeleton wearable robot suit that assists in voluntary control of knee and hip joint motion. There have been several studies on HAL intervention effects in stroke, spinal cord injury, and cerebral palsy. However, no study has investigated HAL intervention for patients with cerebral palsy after surgery. CASE PRESENTATION: We report a case of using HAL in a postoperative patient with cerebral palsy. A 15-year-old boy was diagnosed with spastic diplegia cerebral palsy Gross Motor Function Classification System level IV, with knee flection contracture, equinus foot, and paralysis of the right upper extremity with adduction contracture...
March 27, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29536527/mid-term-development-of-hamstring-tendon-length-and-velocity-after-distal-femoral-extension-osteotomy-in-children-with-bilateral-cerebral-palsy-a-retrospective-cohort-study
#7
Firooz Salami, Julia Wagner, Stefan van Drongelen, Matthias C M Klotz, Thomas Dreher, Sebastian I Wolf, Mirjam Niklasch
AIM: Flexed knee gait can be treated with distal femoral extension osteotomy (DFEO) and additional patellar tendon advancement (PTA) in children with cerebral palsy (CP). This study assesses changes in hamstring muscle tendon length (MTL) and velocity after DFEO (+PTA). METHOD: Nineteen children (mean age 13y [standard deviation 3y] at surgery) with CP and flexed knee gait who were treated with DFEO (15 limbs) or DFEO+PTA (10 limbs) were retrospectively included in this study...
March 14, 2018: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/29520841/adductor-magnus-an-emg-investigation-into-proximal-and-distal-portions-and-direction-specific-action
#8
Matthew L Benn, Tania Pizzari, Leanne Rath, Kylie Tucker, Adam I Semciw
Cadaveric studies indicate that adductor magnus is structurally partitioned into at least two regions. The aim of this study was to investigate the direction-specific actions of proximal and distal portions of adductor magnus, and in doing so determine if these segments have distinct functional roles. Fine-wire EMG electrodes were inserted into two portions of adductor magnus of 12 healthy young adults. Muscle activity was recorded during maximum voluntary isometric contractions (MVICs) across eight tests (hip flexion/extension, internal/external rotation, abduction, and adduction at 0°, 45°, and 90° hip flexion)...
May 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29505896/effect-on-passive-range-of-motion-and-functional-correlates-after-a-long-term-lower-limb-self-stretch-program-in-patients-with-chronic-spastic-paresis
#9
Maud Pradines, Marjolaine Baude, Christina Marciniak, Gerard Francisco, Jean-Michel Gracies, Emilie Hutin, Nicolas Bayle
BACKGROUND: In current health care systems, long-duration stretching, performed daily, cannot be obtained through prescriptions of physical therapy. In addition, the short-term efficacy of the various stretching techniques is disputed, and their long-term effects remain undocumented. OBJECTIVE: To evaluate changes in extensibility in 6 lower limb muscles and in ambulation speed after a ≥1-year self-stretch program, the Guided Self-rehabilitation Contract (GSC), in individuals with chronic spastic paresis...
March 2, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29482120/what-factors-can-affect-lumbopelvic-flexion-extension-motion-in-the-sagittal-plane-a-literature-review
#10
Magdalena Zawadka, Maria Skublewska-Paszkowska, Piotr Gawda, Edyta Lukasik, Jakub Smolka, Miroslaw Jablonski
Clinicians use forward bending and backward return in routine clinical examinations for evaluating spine mobility. The magnitude and timing of lumbar spine and pelvic contributions have been described in the literature as lumbopelvic rhythm. There is still limited knowledge about the factors which can determinate lumbar and hip mobility and coordination in the sagittal plane. The aim of this study is to demonstrate those factors contributing to the lumbopelvic rhythm and to explain the differences observed between subjects...
April 2018: Human Movement Science
https://www.readbyqxmd.com/read/29432323/changes-in-motor-coordination-induced-by-local-fatigue-during-a-sprint-cycling-task
#11
Niels-Peter Brøchner Nielsen, François Hug, Arnaud Guével, Floren Colloud, Julien Lardy, Sylvain Dorel
PURPOSE: This study investigated how muscle coordination is adjusted in response to a decrease in the force-generating capacity of one muscle group during a sprint cycling task. METHODS: Fifteen participants were tested during a sprint before and after a fatigue electromyostimulation protocol was conducted on the quadriceps of one leg. Motor coordination was assessed by measuring myoelectrical activity, pedal force and joint power. RESULTS: The decrease in force-generating capacity of the quadriceps (-28...
February 9, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29430675/ultrasound-elastographic-measurement-of-sciatic-nerve-displacement-and-shear-strain-during-active-and-passive-knee-extension
#12
Richard Ellis, Maheswaran Rohan, James Fox, Juvena Hitt, Helene Langevin, Sharon Henry
There is current need for objective measures of sciatic nerve mobility in patients with sciatic-type pain. The objective of the study was to assess the feasibility and reliability of ultrasound elastography to quantify sciatic nerve displacement and shear strain at the sciatic nerve-hamstring muscle interface during active and passive knee extension-flexion exercises performed while sitting in healthy people. Ultrasound elastography showed excellent intrarater within-session reliability for assessing sciatic nerve displacement and sciatic nerve-hamstring muscle interface shear strain during active knee extension-flexion exercises...
February 12, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29423249/muscle-tendon-related-pain-in-100-patients-with-hip-dysplasia-prevalence-and-associations-with-self-reported-hip-disability-and-muscle-strength
#13
Julie Sandell Jacobsen, Per Hölmich, Kristian Thorborg, Lars Bolvig, Stig Storgaard Jakobsen, Kjeld Søballe, Inger Mechlenburg
The primary aim was to identify muscle-tendon-related pain in 100 patients with hip dysplasia. The secondary aim was to test whether muscle-tendon-related pain is associated with self-reported hip disability and muscle strength in patient with hip dysplasia. One hundred patients (17 men) with a mean age of 29 years (SD 9) were included. Clinical entity approach was carried out to identify muscle-tendon-related pain. Associations between muscle-tendon-related pain and self-reported hip disability and muscle strength were tested with multiple regression analysis, including adjustments for age and gender...
January 2018: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/29408925/outcome-of-medial-hamstring-lengthening-in-children-with-spastic-paresis-a-biomechanical-and-morphological-observational-study
#14
Helga Haberfehlner, Richard T Jaspers, Erich Rutz, Jaap Harlaar, Johannes A van der Sluijs, Melinda M Witbreuk, Kim van Hutten, Jacqueline Romkes, Marie Freslier, Reinald Brunner, Jules G Becher, Huub Maas, Annemieke I Buizer
To improve gait in children with spastic paresis due to cerebral palsy or hereditary spastic paresis, the semitendinosus muscle is frequently lengthened amongst other medial hamstring muscles by orthopaedic surgery. Side effects on gait due to weakening of the hamstring muscles and overcorrections have been reported. How these side effects relate to semitendinosus morphology is unknown. This study assessed the effects of bilateral medial hamstring lengthening as part of single-event multilevel surgery (SEMLS) on (1) knee joint mechanics (2) semitendinosus muscle morphology and (3) gait kinematics...
2018: PloS One
https://www.readbyqxmd.com/read/29401195/effects-of-foam-rolling-on-range-of-motion-peak-torque-muscle-activation-and-the-hamstrings-to-quadriceps-strength-ratios
#15
Samantha N Madoni, Pablo B Costa, Jared W Coburn, Andrew J Galpin
PURPOSE: To examine the effects of foam rolling (FR), on range of motion, (ROM), peak torque (PT), hamstrings-to-quadriceps (H:Q) ratios, and muscle activation . METHODS: Twenty-two recreationally active women (mean age ± SD = 21.55 ± 1.82 years, 161.91 ± 6.58 cm, 61.47 ± 10.54 kg) volunteered for this study. Participants performed pre- and post-tests analyzing PT and surface electromyography (EMG) of their dominant limb completing maximal knee extension and flexion at three different velocities...
February 1, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29364005/purulent-myositis-of-the-thigh-as-a-presentation-of-perforated-low-rectal-cancer
#16
V Jenkins, J Steinke, N Rajendran, D Kumar
Purulent myositis is an acute, intramuscular bacterial infection involving abscess formation most commonly affecting the quadriceps, hamstring and gluteal muscles. We present a case of extensive purulent myositis of the thigh and lower leg caused by bowel perforation below the peritoneal reflection secondary to rectal cancer. Cases of lower limb and perineal purulent myositis should raise suspicion of rectal perforation and should prompt investigations to exclude rectal malignancy.
March 2018: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/29351051/voluntary-ambulation-using-voluntary-upper-limb-muscle-activity-and-hybrid-assistive-limb%C3%A2-hal%C3%A2-in-a-patient-with-complete-paraplegia-due-to-chronic-spinal-cord-injury-a-case-report
#17
Yukiyo Shimizu, Hideki Kadone, Shigeki Kubota, Kenji Suzuki, Kousaku Saotome, Tomoyuki Ueno, Tetsuya Abe, Aiki Marushima, Hiroki Watanabe, Ayumu Endo, Kazue Tsurumi, Ryu Ishimoto, Akira Matsushita, Masao Koda, Akira Matsumura, Yoshiyuki Sankai, Yasushi Hada, Masashi Yamazaki
CONTEXT: We sought to describe our experience with the Hybrid Assistive Limb® (HAL®) for active knee extension and voluntary ambulation with remaining muscle activity in a patient with complete paraplegia after spinal cord injury. FINDINGS: A 30-year-old man with complete paraplegia used the HAL® for 1 month (10 sessions) using his remaining muscle activity, including hip flexor and upper limb activity. Electromyography was used to evaluate muscle activity of the gluteus maximus, tensor fascia lata, quadriceps femoris, and hamstring muscles in synchronization with the Vicon motion capture system...
January 19, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29318610/demographic-and-modifiable-factors-associated-with-knee-contracture-in-children-with-cerebral-palsy
#18
Erika Cloodt, Andreas Rosenblad, Elisabet Rodby-Bousquet
AIM: To identify the prevalence of knee contracture and its association with gross motor function, age, sex, spasticity, and muscle length in children with cerebral palsy (CP). METHOD: Cross-sectional data for passive knee extension were analysed in 3 045 children with CP (1 756 males, 1 289 females; mean age 8y 1mo [SD 3.84]). CP was classified using the Gross Motor Function Classification System (GMFCS) levels I (n=1 330), II (n=508), III (n=280), IV (n=449), and V (n=478)...
April 2018: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/29299474/improvement-in-hamstring-and-quadriceps-muscle-strength-following-cruciate-retaining-single-radius-total-knee-arthroplasty
#19
Jennifer Kurowicki, Anton Khlopas, Assem A Sultan, Nipun Sodhi, Linsen T Samuel, Morad Chughtai, Martin Roche, Peter M Bonutti, Michael A Mont
Background: The ability to reach full functional capacity following total knee arthroplasty (TKA) is reliant on the strength of the quadriceps and hamstring muscles. Weakness of these muscles can persist anywhere from 1 to 3 years post-operatively. There remains considerable controversy as to what factors influence restoration of muscle strength after TKA. Implant designs have been implicated in the ability of patients to recover. Currently there is a paucity of literature available describing the influence of patient characteristics, surgical factors, and clinical outcomes on quadriceps and hamstring muscle strength following TKA with a cruciate-retaining, single radius (SR) implant...
December 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29219884/abduction-in-proximal-hamstring-tendon-avulsion-injury-mechanism-a-report-on-3-athletes
#20
Anne D van der Made, Rolf W Peters, Claire Verheul, Mario Maas, Gino M Kerkhoffs
Proximal hamstring tendon avulsions are typically sustained during forced hip hyperflexion combined with knee extension. We present 3 cases of athletes with a proximal hamstring tendon avulsion caused by an alternative injury mechanism that also involves a considerable hip abduction component (flexion-abduction injury mechanism). All cases had at least one concurrent injury of the medial thigh muscles, either on the ipsilateral or contralateral side. The 2 elite athletes with this injury mechanism returned to sport at preinjury level relatively quickly...
December 1, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
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