keyword
MENU ▼
Read by QxMD icon Read
search

Muscle activation knee

keyword
https://www.readbyqxmd.com/read/29343183/the-acute-angiogenic-signalling-response-to-low-load-resistance-exercise-with-blood-flow-restriction
#1
Richard A Ferguson, Julie E A Hunt, Mark P Lewis, Neil R W Martin, Darren J Player, Carolin Stangier, Conor W Taylor, Mark C Turner
This study investigated protein kinase activation and gene expression of angiogenic factors in response to low-load resistance exercise with or without blood flow restriction (BFR). In a repeated measures cross-over design, six males performed four sets of bilateral knee extension exercise at 20% 1RM (reps per set = 30:15:15:continued to fatigue) with BFR (110 mmHg) and without (CON). Muscle biopsies were obtained from the vastus lateralis before, 2 and 4 h post-exercise. mRNA expression was determined using real-time RT-PCR...
January 17, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29339983/analysis-of-the-hamstring-muscle-activation-during-two-injury-prevention-exercises
#2
Alireza Monajati, Eneko Larumbe-Zabala, Mark Goss-Sampson, Fernando Naclerio
The aim of this study was to perform an electromyographic and kinetic comparison of two commonly used hamstring eccentric strengthening exercises: Nordic Curl and Ball Leg Curl. After determining the maximum isometric voluntary contraction of the knee flexors, ten female athletes performed 3 repetitions of both the Nordic Curl and Ball Leg Curl, while knee angular displacement and electromyografic activity of the biceps femoris and semitendinosus were monitored. No significant differences were found between biceps femoris and semitendinosus activation in both the Nordic Curl and Ball Leg Curl...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29337833/effects-of-plyometric-and-resistance-training-on-muscle-strength-explosiveness-and-neuromuscular-function-in-young-adolescent-soccer-players
#3
Brandon John McKinlay, Phillip Wallace, Raffy Dotan, Devon Long, Craig Tokuno, David Gabriel, Bareket Falk
This study examined the effect of 8-weeks of free-weight-resistance (RT) and plyometric (PLYO) training on maximal strength, explosiveness and jump performance compared with no added training (CON), in young male soccer players. Forty-one 11[FIGURE DASH]13-year-old soccer players were divided into three groups (RT, PLYO, CON). All participants completed isometric and dynamic (240°/s) knee extensions pre- and post-training. Peak torque (pT), peak rate of torque development (pRTD), electromechanical-delay (EMD), rate of muscle activation (Q50), m...
January 4, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29332736/electromyographic-changes-in-muscles-around-the-ankle-and-the-knee-joints-in-women-accustomed-to-wearing-high-heeled-or%C3%A2-low-heeled-shoes
#4
Mona Kermani, Mehri Ghasemi, Abbas Rahimi, Khosro Khademi-Kalantari, Alireza Akbarzadeh-Bghban
OBJECTIVES: This study aimed to investigate muscle activities in the muscles around the ankle and knee joints in women accustomed to wearing high-heeled or low-heeled shoes. METHODOLOGY: Forty young women (age: 18-40 years) participated in this comparative clinical study. Twenty of the recruited subjects were accustomed to high-heeled shoes and the other half to low-heeled shoes. Electrical activities of the ankle and knee muscles in both groups with and without wearing their accustomed shoes were studied during walking...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332237/acute-acetaminophen-ingestion-improves-performance-and-muscle-activation-during-maximal-intermittent-knee-extensor-exercise
#5
Paul T Morgan, Joanna L Bowtell, Anni Vanhatalo, Andrew M Jones, Stephen J Bailey
AIM: Acetaminophen is a commonly used medicine for pain relief and emerging evidence suggests that it may improve endurance exercise performance. This study investigated some of the physiological mechanisms by which acute acetaminophen ingestion might blunt muscle fatigue development. METHODS: Thirteen active males completed 60 × 3 s maximum voluntary contractions (MVC) of the knee extensors with each contraction separated by a 2 s passive recovery period...
January 13, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29327823/a-previous-hamstring-injury-affects-kicking-mechanics-in-soccer-players
#6
Archit Navandar, Santiago Veiga, Gonzalo Torres, David Chorro, Enrique Navarro
BACKGROUND: Although the kicking skill is influenced by limb dominance and sex, how a previous hamstring injury affects kicking has not been studied in detail. Thus, the objective of this study was to evaluate the effect of sex and limb dominance on kicking in limbs with and without a previous hamstring injury. METHODS: 45 professional players (males: n=19, previously injured players=4, age=21.16 ± 2.00 years; females: n=19, previously injured players=10, age=22...
January 10, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29325839/the-effect-of-low-load-exercise-on-joint-pain-function-and-activities-of-daily-living-in-patients-with-knee-osteoarthritis
#7
Jason Peeler, Jacquie Ripat
BACKGROUND: Knee osteoarthritis has a lifetime risk of nearly one in two, with obese individuals being most susceptible. While exercise is universally recognized as a critical component for management, unsafe or ineffective exercise frequently leads to exacerbation of joint symptoms. AIM: Evaluate the effect of a 12week lower body positive pressure (LBPP) supported low-load treadmill walking program on knee pain, joint function, and performance of daily activities in patients with knee osteoarthritis (OA)...
January 8, 2018: Knee
https://www.readbyqxmd.com/read/29318168/the-utility-of-objective-strength-and-functional-performance-to-predict-subjective-outcomes-after-anterior-cruciate-ligament-reconstruction
#8
Heather Menzer, Lindsay V Slater, David Diduch, Mark Miller, Grant Norte, John Goetschius, Joseph M Hart
Background: Many clinicians release patients to return to activity after anterior cruciate ligament reconstruction (ACLR) based on time from surgery despite deficits in muscle strength and function. It is unclear whether symmetry or unilateral performance is the best predictor of subjective outcomes after ACLR. Purpose: To determine physical performance predictors of patient-reported outcomes after reconstruction. Study Design: Cross-sectional study; Level of evidence, 3...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29317069/blood-flow-restriction-training-as-a-prehabilitation-concept-in-total-knee-arthroplasty-a-narrative-review-about-current-preoperative-interventions-and-the-potential-impact-of-bfr
#9
Alexander Franz, Fina Pauline Queitsch, Michael Behringer, Constantin Mayer, Rüdiger Krauspe, Christoph Zilkens
Osteoarthritis of the knee is one of the most commonly diagnosed joint ailments and responsible for increased rates of total knee arthroplasty surgeries worldwide. Whereas the surgical approach is able to diminish the perceived knee pain of concerned patients', the postoperative recovery is often accompanied by persistent skeletal muscle dysfunctions and atrophy, which is responsible for functional deficits for up to several years. Recent findings indicate that surgery induced adverse effects on skeletal muscles are largely associated with the use of pneumatic tourniquets, wherefore several studies try to reduce tourniquet use in orthopedic surgery...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29315567/the-influence-of-capillarization-on-satellite-cell-pool-expansion-and-activation-following-exercise-induced-muscle-damage-in-healthy-young-men
#10
Joshua P Nederveen, Sophie Joanisse, Tim Snijders, Aaron Cq Thomas, Dinesh Kumbhare, Gianni Parise
Factors that determine the skeletal muscle satellite cell (SC) response remain incompletely understood. It is known, however, that SC activation status is closely related to the anatomical relationship between SC and muscle capillaries. We investigated the impact of muscle fibre capillarization on the expansion and activation status of SC following a muscle damaging exercise protocol in healthy young men. Twenty-nine young men (21 ± 0.5 yrs) performed 300 unilateral eccentric contractions (180 deg·s-1 ) of the knee extensors...
January 6, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29314903/national-athletic-trainers-association-position-statement-prevention-of-anterior-cruciate-ligament-injury
#11
Darin A Padua, Lindsay J DiStefano, Timothy E Hewett, William E Garrett, Stephen W Marshall, Grace M Golden, Sandra J Shultz, Susan M Sigward
OBJECTIVE:   To provide certified athletic trainers, physicians, and other health care and fitness professionals with recommendations based on current evidence regarding the prevention of noncontact and indirect-contact anterior cruciate ligament (ACL) injuries in athletes and physically active individuals. BACKGROUND:   Preventing ACL injuries during sport and physical activity may dramatically decrease medical costs and long-term disability. Implementing ACL injury-prevention training programs may improve an individual's neuromuscular control and lower extremity biomechanics and thereby reduce the risk of injury...
January 9, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29304102/activation-of-biceps-femoris-long-head-reduces-tibiofemoral-anterior-shear-force-and-tibial-internal-rotation-torque-in-healthy-subjects
#12
Nur Liyana Azmi, Ziyun Ding, Rui Xu, Anthony M J Bull
The anterior cruciate ligament (ACL) provides resistance to tibial internal rotation torque and anterior shear at the knee. ACL deficiency results in knee instability. Optimisation of muscle contraction through functional electrical stimulation (FES) offers the prospect of mitigating the destabilising effects of ACL deficiency. The hypothesis of this study is that activation of the biceps femoris long head (BFLH) reduces the tibial internal rotation torque and the anterior shear force at the knee. Gait data of twelve healthy subjects were measured with and without the application of FES and taken as inputs to a computational musculoskeletal model...
2018: PloS One
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/29299225/fes-bike-race-preparation-to-cybathlon-2016-by-ema-team-a-short-case-report
#14
Juliana Araujo Guimarães, Lucas Oliveira da Fonseca, Ana Carolina de Sousa, Miguel Eduardo Gutierrez Paredes, George Andrew Brindeiro, Antônio Padilha Lanari Bó, Emerson Fachin-Martins
FES-assisted cycling has been recommended to people struggling to emerge from a disability to more functioning life after spinal cord injury. Recommendations issued by a gowing number of scientific papershas promised toimprove body composition and physical activity levels, as well as to controlinvoluntary muscle response; favoring activity and participation which break new grounds in expanding locomotion, leisure and occupational options for people with paraplegia and tetraplegia. In this report we described our experience to select and prepare a pilot to compete in the FES Bike Race modality at Cybathlon 2016 in Kloten (Zurick)...
December 5, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/29291282/anterior-knee-pain-what-muscles-should-i-strengthen
#15
(no author information available yet)
Pain in the front of your knee or under your kneecap is often called patellofemoral pain. The pain may be a nagging ache or an occasional sharp twinge. Because the pain is around the front of your knee, treatment has traditionally focused on the knee itself. However, recent evidence suggests that strengthening your hip muscles can also help by decreasing the stress in your knee. A study published in the January 2018 issue of JOSPT provides new insights and evidence-based suggestions on how to strengthen your entire leg to decrease your knee pain and help you return to full activity...
January 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29290539/is-acl-reconstruction-a-prerequisite-for-the-patients-having-recreational-sporting-activities
#16
Emrah Kovalak, Tolga Atay, Cem Çetin, I Meltem Atay, Mustafa Onur Serbest
OBJECTIVE: Whether surgical or conservative treatment is more effective in allowing patients to return to physical activity after anterior cruciate ligament (ACL) injury is controversial. We sought to compare mid-term outcome measures between isolated ACL tear patients who underwent reconstruction followed by closed kinetic chain exercises and those who underwent neuromuscular training only. METHODS: We retrospectively evaluated patients with ACL tears who underwent post-surgery CKC strength training after ACL reconstruction (Group A), and patients who only underwent neuromuscular training (Group B) with a minimum follow-up time of 5 years...
December 28, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29290418/effect-of-high-intensity-perturbations-during-core-specific-sensorimotor-exercises-on-trunk-muscle-activation
#17
Juliane Mueller, Miralem Hadzic, Hendrik Mugele, Josefine Stoll, Steffen Mueller, Frank Mayer
Core-specific sensorimotor exercises are proven to enhance neuromuscular activity of the trunk. However, the influence of high-intensity perturbations on training efficiency is unclear within this context. Sixteen participants (29±2yrs; 175±8cm; 69±13kg) were prepared with a 12-lead bilateral trunk EMG. Warm-up on a dynamometer was followed by maximum voluntary isometric trunk (flex/ext) contraction (MVC). Next, participants performed four conditions for a one-legged stance with hip abduction on a stable surface (HA) repeated randomly on an unstable surface (HAP), on a stable surface with perturbation (HA+P), and on an unstable surface with perturbation (HAP+P)...
December 15, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29289541/supervised-balance-training-and-wii-fit-based-exercises-lower-falls-risk-in-older-adults-with-type-2-diabetes
#18
Steven Morrison, Rachel Simmons, Sheri R Colberg, Henri K Parson, Aaron I Vinik
OBJECTIVES: This study examined the benefits of and differences between 12 weeks of thrice-weekly supervised balance training and an unsupervised at-home balance activity (using the Nintendo Wii Fit) for improving balance and reaction time and lowering falls risk in older individuals with type 2 diabetes mellitus (T2DM). DESIGN: Before-after trial. SETTING: University research laboratory, home environment. PARTICIPANTS: Sixty-five older adults with type 2 diabetes were recruited for this study...
December 27, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/29289349/motor-units-in-vastus-lateralis-and-in-different-vastus-medialis-regions-show-different-firing-properties-during-low-level-isometric-knee-extension-contraction
#19
Leonardo Mendes Leal de Souza, Hélio Veiga Cabral, Liliam Fernandes de Oliveira, Taian Martins Vieira
Architectural differences along vastus medialis (VM) and between VM and vastus lateralis (VL) are considered functionally important for the patellar tracking, knee joint stability and knee joint extension. Whether these functional differences are associated with a differential activity of motor units between VM and VL is however unknown. In the present study, we, therefore, investigate neuroanatomical differences in the activity of motor units detected proximo-distally from VM and from the VL muscle. Nine healthy volunteers performed low-level isometric knee extension contractions (20% of their maximum voluntary contraction) following a trapezoidal trajectory...
December 28, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29287785/evaluation-of-muscle-activity-just-after-straight-leg-raising-exercise-by-using-18fdg-pet
#20
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
keyword
keyword
64264
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"