keyword
MENU ▼
Read by QxMD icon Read
search

Quadriceps activation

keyword
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
#1
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/29350554/quadriceps-neuromuscular-function-and-jump-landing-sagittal-plane-knee-biomechanics-after-anterior-cruciate-ligament-reconstruction
#2
Sarah H Ward, Troy Blackburn, Darin A Padua, Laura E Stanley, Matthew S Harkey, Brittney A Luc-Harkey, Brian G Pietrosimone
CONTEXT:   Aberrant biomechanics may affect force attenuation at the knee during dynamic activities, potentially increasing the risk of sustaining a knee injury or hastening the development of osteoarthritis after anterior cruciate ligament reconstruction (ACLR). Impaired quadriceps neuromuscular function has been hypothesized to influence the development of aberrant biomechanics. OBJECTIVE:   To determine the association between quadriceps neuromuscular function (strength, voluntary activation, and spinal-reflex and corticomotor excitability) and sagittal-plane knee biomechanics during jump landings in individuals with ACLR...
January 19, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29347947/efficacy-of-pre-operative-quadriceps-strength-training-on-knee-extensor-strength-before-and-shortly-following-total-knee-arthroplasty-protocol-for-a-randomized-dose-response-trial-the-quadx-1-trial
#3
Rasmus Skov Husted, Anders Troelsen, Kristian Thorborg, Michael Skovdal Rathleff, Henrik Husted, Thomas Bandholm
BACKGROUND: Patients with knee osteoarthritis (OA) report knee pain, limitation in physical activities and low quality of life. The two primary treatments for knee OA are non-surgical treatment (e.g., exercise) and surgery (total knee arthroplasty (TKA)); however, national guidelines recommend non-surgical treatment to be tried prior to surgical procedures. Patients with knee OA are characterized by decreased muscle strength, particularly in the knee-extensor muscles. Correspondingly, decreased knee-extensor strength is found to be associated with an increased risk of development, progression and severity of knee OA symptoms...
January 18, 2018: Trials
https://www.readbyqxmd.com/read/29346717/anterior-cruciate-ligament-tear-induces-a-sustained-loss-of-muscle-fiber-force-production
#4
Jonathan P Gumucio, Kristoffer B Sugg, Elizabeth R Sibilsky Enselman, Alexis C Konja, Logan R Eckhardt, Asheesh Bedi, Christopher L Mendias
INTRODUCTION: Patients with anterior cruciate ligament (ACL) tears have persistent quadriceps strength deficits that are thought to be due to altered neurophysiological function. Our goal was to determine the changes in muscle fiber contractility independent of the ability of motor neurons to activate fibers. METHODS: We obtained quadriceps biopsies of patients undergoing ACL reconstruction, and additional biopsies one, two, and six months after surgery. Muscles fiber contractility was assessed in vitro, along with whole muscle strength testing...
January 18, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29334339/impact-of-spasticity-on-transfers-and-activities-of-daily-living-in-individuals-with-spinal-cord-injury
#5
Jacqueline Tibbett, Eva G Widerström-Noga, Christine K Thomas, Edelle C Field-Fote
CONTEXT/OBJECTIVE: For persons with spinal cord injury, spasticity commonly interferes with activities of daily living such as transfers. Electromyography can be used to objectively measure muscle spasms during transfers, but how electromyographic measures relate to the impact spasticity has on life, or to clinically-rated spasticity, is unclear. We aimed to characterize relationships among spasm duration and magnitude, impact of spasticity on daily life, and a clinical measure of extensor spasticity, as well as to determine reliability of the electromyographic measures...
January 15, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29332757/activation-of-lower-limb-muscles-with-different-types-of-mount-in-hippotherapy
#6
Mariane Fernandes Ribeiro, Ana Paula Espindula, Domingos Emanuel Bevilacqua Júnior, Jéssica Aparecida Tolentino, Carolina Fioroni Ribeiro da Silva, Márcia Fernandes Araújo, Alex Abadio Ferreira, Vicente de Paula Antunes Teixeira
OBJECTIVES: To analyze muscle activation of lower limbs (LL) of subjects in hippotherapy sessions. METHODS: The study included 10 healthy subjects, five male and five female, with an average age of 24.03 (±4.06) years. Subjects underwent four hippotherapy sessions of 30 min with interval of one week, and each session was performed with a different type of mount material in the following order: 1st performed with saddle and feet in the stirrups (S1), 2nd with saddle and feet off the stirrups (S2), 3rd with blanket and feet off the stirrup (S3) and 4th with blanket and feet in the stirrups (S4)...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332742/the-effects-of-dorso-lumbar-motion-restriction-on-emg-activity-of-selected-muscles-during-running
#7
Joseph J Morley, Edward Traum
The effects of restricting dorso-lumbar spine mobility on electromyographic activity of the erector spinae, quadriceps femoris, hamstrings and gastrocnemius muscles in runners was investigated. Thermoplastic casting material was fashioned into a rigid orthosis and used to restrict spinal motion during running. Volunteers ran on a treadmill at 2.78 m/sec, under normal conditions and with spinal motion restricted. Surface electromyographic data was collected during both sets of trials. Normal electromyographic data was also compared with previous authors to determine similarity with their electromyographic data...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332207/skeletal-muscle-expression-of-p43-a-truncated-thyroid-hormone-receptor-%C3%AE-affects-lipid-composition-and-metabolism
#8
François Casas, Gilles Fouret, Jérome Lecomte, Fabienne Cortade, Laurence Pessemesse, Emilie Blanchet, Chantal Wrutniak-Cabello, Charles Coudray, Christine Feillet-Coudray
Thyroid hormone is a major regulator of metabolism and mitochondrial function. Thyroid hormone also affects reactions in almost all pathways of lipids metabolism and as such is considered as the main hormonal regulator of lipid biogenesis. The aim of this study was to explore the possible involvement of p43, a 43 Kda truncated form of the nuclear thyroid hormone receptor TRα1 which stimulates mitochondrial activity. Therefore, using mouse models overexpressing p43 in skeletal muscle (p43-Tg) or lacking p43 (p43-/-), we have investigated the lipid composition in quadriceps muscle and in mitochondria...
January 13, 2018: Journal of Bioenergetics and Biomembranes
https://www.readbyqxmd.com/read/29320561/%C3%AE-smooth-muscle-actin-is-not-a-marker-of-fibrogenic-cell-activity-in-skeletal-muscle-fibrosis
#9
Wanming Zhao, Xingyu Wang, Kai-Hui Sun, Lan Zhou
α-Smooth muscle actin (α-SMA) is used as a marker for a subset of activated fibrogenic cells, myofibroblasts, which are regarded as important effector cells of tissue fibrogenesis. We address whether α-SMA-expressing myofibroblasts are detectable in fibrotic muscles of mdx5cv mice, a mouse model for Duchenne muscular dystrophy (DMD), and whether the α-SMA expression correlates with the fibrogenic function of intramuscular fibrogenic cells. α-SMA immunostaining signal was not detected in collagen I (GFP)-expressing cells in fibrotic muscles of ColI-GFP/mdx5cv mice, but it was readily detected in smooth muscle cells lining intramuscular blood vessel walls...
2018: PloS One
https://www.readbyqxmd.com/read/29315579/muscle-molecular-adaptations-to-endurance-exercise-training-are-conditioned-by-glycogen-availability-a-proteomics-based-analysis-in-the-mcardle-mouse-model
#10
Carmen Fiuza-Luces, Alejandro Santos-Lozano, Francisco Llavero, Rocío Campo, Gisela Nogales-Gadea, Jorge Díez Bermejo, Carlos Balandrón, África González-Murillo, Joaquín Arenas, Miguel A Martín, Antoni L Andreu, Tomàs Pinós, Beatriz G Gálvez, Juan A López, Jesús Vázquez, José L Zugaza, Alejandro Lucia
McArdle disease is an inborn disorder of skeletal muscle glycogen metabolism that results in blockade of glycogen breakdown due to mutations in the myophosphorylase gene. We recently developed a mouse model carrying the homozygous p.R50X common human mutation (McArdle mouse), facilitating the study of how glycogen availability affects muscle molecular adaptations to endurance exercise training. Using quantitative differential analysis by liquid chromatography with tandem-mass spectrometry, we analysed the quadriceps muscle proteome of 16-week-old McArdle (n = 5) and wild-type (WT) (n = 4) mice previously subjected to 8-week moderate-intensity treadmill training or to an equivalent control (no training) period...
January 7, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29315348/knee-strength-ratios-in-competitive-female-athletes
#11
Jaroslaw Kabacinski, Michal Murawa, Krzysztof Mackala, Lechoslaw Bogdan Dworak
Knee strength ratios are related to the movement patterns, sport-specific training and knee injuries in athletes. The purpose of this study was to determine the ratios in the concentric isokinetic strength of the hamstrings and quadriceps and the isometric strength of the knee extensors. In female basketball players (n = 14) and female volleyball players (n = 12) were evaluated: the hamstrings to quadriceps peak torque ratio (H/Q) and side-to-side peak torque ratio (TR) for hamstrings and quadriceps; the ratio of the maximal bilateral strength to the summed maximal unilateral strength (B/U) and side-to-side maximal strength ratio (SR) for knee extensors...
2018: PloS One
https://www.readbyqxmd.com/read/29308949/a-comparison-of-two-manual-physical-therapy-approaches-and-electrotherapy-modalities-for-patients-with-knee-osteoarthritis-a-randomized-three-arm-clinical-trial
#12
Ebru Kaya Mutlu, Ersin Ercin, Arzu Razak Ozdıncler, Nadir Ones
A broad spectrum of physical therapy exercise programs provides symptom relief and functional benefit for patients with knee OA. Manual physical therapy, including tailored exercise programs provide relatively higher level benefit that persists to one year. It is currently unknown if there are important differences in the effects of different manual physical therapy techniques for patients with knee OA and there are virtually no studies comparing manual physical therapy and electrotherapy modalities. The aim of the study was to compare long-term results between three treatment groups (mobilization with movements [MWMs], passive joint mobilization [PJM], and electrotherapy) to determine which treatment is most effective in patients with knee OA...
January 8, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29303130/quadriceps-strength-and-anterior-knee-pain-following-tibia-intramedullary-nailing-any-clinical-relationship
#13
O Esan, A O Ojoawo, I C Ikem
INTRODUCTION: Anterior knee pain can be chronic sequelae of intramedullary nailing of the tibia. Several causes have been identified; no single reason can fully explain the occurrence. We, therefore, set out to find the rate of anterior knee pain in our practice and if any relationship exists between the anterior knee pain and extensor muscle strength. METHODOLOGY: A total of 72 knees in 36 patients with no prior history of knee pain, but had unilateral tibiofibular fracture, who had internal fixation with interlocking intramedullary nailing done and were followed up for at least 1 year were recruited into the study...
November 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29287785/evaluation-of-muscle-activity-just-after-straight-leg-raising-exercise-by-using-18fdg-pet
#14
Hiroyuki Shiozawa, Takashi Ohsawa, Yoshito Tsushima, Tetsuya Higuchi, Kenji Takagishi, Hirotaka Chikuda
BACKGROUND: Exercise therapy is one of the recognized treatment methods for knee osteoarthritis (KOA). One such exercise technique, straight leg raising (SLR), is widely known as a home exercise method for strengthening the quadriceps femoris muscle. However, whether this exercise truly strengthens the quadriceps is not known. The objective of the present study was to investigate which lower limb muscle is stimulated and shows increased activity with SLR. METHODS: A total of 14 lower limbs in seven healthy adult male volunteers (mean age: 31...
December 26, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29283696/the-neuromuscular-determinants-of-unilateral-jump-performance-in-soccer-players-are-direction-specific
#15
Conall Murtagh, Christopher Nulty, Jos Vanrenterghem, Andy O'Boyle, Ryland Morgans, Barry Drust, Robert Erskine
PURPOSE: To investigate differences in neuromuscular factors between elite and non-elite players, and to establish which factors underpin direction-specific unilateral jump performance. METHODS: Elite (n=23; age, 18.1 ± 1.0 yrs; BMI, 23.1 ± 1.8 kg/m2) and non-elite (n=20; age, 22.3 ± 2.7 yrs; BMI, 23.8 ± 1.8 kg/m2) soccer players performed three unilateral countermovement jumps (CMJs) on a force platform in the vertical, horizontal-forward and medial directions...
December 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29282267/stepped-care-approach-for-medial-tibiofemoral-osteoarthritis-streamline-protocol-for-a-randomised-controlled-trial
#16
Sarah Rubia Robbins, Luciano Ricardo S Melo, Hema Urban, Leticia A Deveza, Rebecca Asher, Victoria L Johnson, David J Hunter
INTRODUCTION: Current guidelines recommend tailored interventions to optimise knee osteoarthritis (OA) management. However, models of care still have a 'one size fits all' approach, which is suboptimal as it ignores patient heterogeneity. This study aims to compare a stepped care strategy with standard care for overweight and obese persons with medial tibiofemoral OA. METHODS AND ANALYSIS: Participants will be randomised into two groups (85 each). The intervention will receive a diet and exercise programme for 18 weeks in the first step of the study...
December 26, 2017: BMJ Open
https://www.readbyqxmd.com/read/29280079/photobiomodulation-increases-mitochondrial-citrate-synthase-activity-in-rats-submitted-to-aerobic-training
#17
Wouber Hérickson de Brito Vieira, Cleber Ferraresi, Maria Luiza Barcellos Schwantes, Sérgio Eduardo de Andrade Perez, Vilmar Baldissera, Mikhail Santos Cerqueira, Nivaldo Antonio Parizotto
This study investigated the effects of photobiomodulation by low-laser laser therapy (LLLT) on the activities of citrate synthase (CS) and lactate dehydrogenase (LDH) and the anaerobic threshold (AT) in rats submitted to treadmill exercise. Fifty-four rats were allocated into four groups: rest control (RCG), rest laser (RLG), exercise control (ECG), and exercise laser (ELG). The infrared LLLT was applied daily on the quadriceps, gluteus maximum, soleus, and tibialis anterior muscles. Muscle samples (soleus, tibialis anterior, and cardiac muscles) were removed 48 h after the last exercise session for spectrophotometric analysis of the CS and LDH...
December 26, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29277394/nitric-oxide-treatment-attenuates-muscle-atrophy-during-hind-limb-suspension-in-mice
#18
Judy E Anderson, Antonia Zhu, Tooru M Mizuno
Debilitating muscle-disuse atrophy in aging or obesity i has huge socioeconomic impact. Since nitric oxide (NO) mediates muscle satellite cell activation and induces hypertrophy with exercise in old mice, we tested whether treatment with the NO donor, isosorbide dinitrate (ISDN), during hind limb suspension would reduce atrophy. Mice were suspended 18 days, with or without daily ISDN (66mg/kg). Muscles were examined for atrophy (weight, fiber diameter); regulatory changes in atrogin-1 (a negative regulator of muscle mass), myostatin (inhibit myogenesis), and satellite cell proliferation; and metabolic responses in myosin heavy chains (MyHCs), liver lipid, and hypothalamic gene expression...
December 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29276707/reliability-and-minimal-detectable-change-values-for-predictions-of-knee-forces-during-gait-and-stair-ascent-derived-from-the-freebody-musculoskeletal-model-of-the-lower-limb
#19
Phil D B Price, Conor Gissane, Daniel J Cleather
FreeBody is a musculoskeletal model of the lower limb used to calculate predictions of muscle and joint contact forces. The validation of FreeBody has been described in a number of publications; however, its reliability has yet to be established. The purpose of this study was, therefore, to establish the test-retest reliability of FreeBody in a population of healthy adults in order to add support to previous and future research using FreeBody that demonstrates differences between cohorts after an intervention...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29273527/the-role-of-physical-exercise-on-sestrin1-and-2-accumulations-in-the-skeletal-muscle-of-mice
#20
Barbara M Crisol, Luciene Lenhare, Rodrigo S Gaspar, Rafael C Gaspar, Vitor R Muñoz, Adelino S R da Silva, Dennys E Cintra, Leandro P Moura, José R Pauli, Eduardo R Ropelle
AIMS: Sestrins, a class of stress-related proteins, is involved in the control of aging-induced organic dysfunctions and metabolic control. However, the factors that modulate the levels of Sestrins are poorly studied. Here, we evaluated the effects of acute and chronic aerobic exercise on Sestrin 1 (Sesn1) and Sesn2 protein contents in the skeletal muscle of mice. MAIN METHODS: Male C57BL/6J mice performed an acute or chronic (4weeks) exercise protocols on a treadmill running at 60% of the peak workload...
December 19, 2017: Life Sciences
keyword
keyword
34633
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"