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https://www.readbyqxmd.com/read/28916956/transitioning-to-minimal-footwear-a-systematic-review-of-methods-and-future-clinical-recommendations
#1
REVIEW
Joe P Warne, Allison H Gruber
BACKGROUND: Recent interest in barefoot running has led to the development of minimalist running shoes that are popular in distance runners. A careful transition to these shoes has been suggested and examined in the literature. However, no guidelines based on systematic evidence have been presented. The purpose of this review is to systematically examine the methods employed in the literature to transition to minimal footwear (MFW), as well as the outcomes to these studies in distance runners...
September 15, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28910657/the-use-of-real-time-feedback-to-improve-kinematic-marker-placement-consistency-among-novice-examiners
#2
Charles A J Macaulay, Sean T Osis, Christian Clermont, Reed Ferber
Marker placement deviation has been shown to be the largest source of error in gait kinematic data, limiting the ability of clinicians and researchers to conduct between-day or between-center investigations. Prior marker-placement standardization methods are either impractical for a clinical setting or rely on expert marker placement. However, a recently developed, real-time feedback tool has been developed and shown to improve marker placement and downstream kinematic calculations. The purpose of this study was to determine whether this real-time marker-placement tool could improve the consistency of gait kinematic data collected by a group of novice examiners...
September 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28892671/kinematic-and-kinetic-gait-deviations-in-males-long-after-anterior-cruciate-ligament-reconstruction
#3
Giovanni Milandri, Mike Posthumus, T J Small, Adam Bothma, Willem van der Merwe, Reshma Kassanjee, Sudesh Sivarasu
BACKGROUND: Biomechanical deviations long (approx. 5years) after anterior cruciate ligament reconstruction have not been quantified in males, despite their distinct risk profile as compared to females. These deviations can indicate altered joint loading during chronic, repetitive motions. METHODS: Cross-sectional study, comparing kinematic and kinetic variables between 15 male anterior cruciate ligament reconstructed patients and 15 healthy controls. During walking and running gait, measurements were taken of impact dynamics, knee and hip sagittal plane angles and moments, and knee varus angles and adduction moments...
July 29, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28891991/a-graphene-based-flexible-pressure-sensor-with-applications-to-plantar-pressure-measurement-and-gait-analysis
#4
Cunguang Lou, Shuo Wang, Tie Liang, Chenyao Pang, Lei Huang, Mingtao Run, Xiuling Liu
In the present study, we propose and develop a flexible pressure sensor based on the piezoresistive effect of multilayer graphene films on polyester textile. The pressure response results from the deformation of graphene conductive network structure and the changes in resistance. Here, we show that the graphene pressure sensor can achieve a sensitivity value of 0.012 kPa - 1 , the measurement range can be as high as 800 kPa, and the response time can reach to 50 ms. Subsequently, a stable in-shoe wireless plantar pressure measurement system is developed and dynamic pressure distribution is acquired in real-time...
September 11, 2017: Materials
https://www.readbyqxmd.com/read/28869903/biomechanical-differences-between-cases-with-suspected-chronic-exertional-compartment-syndrome-and-asymptomatic-controls-during-running
#5
Andrew Roberts, David Roscoe, David Hulse, Alexander N Bennett, Sharon Dixon
Chronic exertional compartment syndrome (CECS) has been hypothesised, following clinical observations, to be the result of abnormal biomechanics predominantly at the ankle. Treatment of CECS through running re-education to correct these abnormalities has been reported to improve symptoms. However no primary research has been carried out to investigate the movement patterns of those with CECS. This study aimed to compare the running kinematics and muscle activity of cases with CECS and asymptomatic controls...
August 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28837918/biomechanical-analysis-of-gait-waveform-data-exploring-differences-between-shod-and-barefoot-running-in-habitually-shod-runners
#6
Nicholas Tam, Danielle Prins, Nikhil V Divekar, Robert P Lamberts
The aim of this study was to utilise one-dimensional statistical parametric mapping to compare differences between biomechanical and electromyographical waveforms in runners when running in barefoot or shod conditions. Fifty habitually shod runners were assessed during overground running at their current 10-km race running speed. Electromyography, kinematics and ground reaction forces were collected during these running trials. Joint kinetics were calculated using inverse dynamics. One-dimensional statistical parametric mapping one sample t-test was conducted to assess differences over an entire gait cycle on the variables of interest when barefoot or shod (p<0...
August 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28830896/patient-with-niemann-pick-disease-type-c-over-20-years-follow-up
#7
Kazuo Abe, Norio Sakai
We report a 37-year-old woman with Niemann-Pick disease type C (NPC) 1. At the age of 8 years, she presented slow running followed by both fingers dystonia at the age of 10 years. At the age of 16 years, she developed declined scholastic achievement. On her first visit at the age of 17 years, she showed dystonia, ataxic gait and vertical supranuclear gaze palsy. We suspected it was NPC. She presented atrophies in the frontal lobes, brainstem and cerebellum in a brain MRI. She presented hepatomegalies and splenomegalies in an abdominal CT...
August 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28822329/changes-in-gluteal-muscle-forces-with-alteration-of-footstrike-pattern-during-running
#8
Charles Nathan Vannatta, Thomas W Kernozek, Naghmeh Gheidi
Gait retraining is a common form of treatment for running related injuries. Proximal factors at the hip have been postulated as having a role in the development of running related injuries. How altering footstrike affects hip muscles forces and kinematics has not been described. Thus, we aimed to quantify differences in hip muscle forces and hip kinematics that may occur when healthy runners are instructed to alter their foot strike pattern from their habitual rear-foot strike to a forefoot strike. This may gain insight on the potential etiology and treatment methods of running related lower extremity injury...
August 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28820647/acute-fatigue-negatively-affects-risk-factors-for-injury-in-trained-but-not-well-trained-habitually-shod-runners-when-running-barefoot
#9
Nicholas Tam, Devon R Coetzee, Safwaan Ahmed, Robert P Lamberts, Yumna Albertus-Kajee, Ross Tucker
INTRODUCTION: Many factors may contribute to running-related injury. These include fatigue and footwear, the combination of which has rarely been studied, in particular with reference to barefoot running, recently advocated as a method to reduce injury risk. METHODS: Twenty-two runners (12 well-trained and 10 trained) participated in a 10 km fatiguing trial. Knee and ankle joint kinematics and kinetics and electromyography were assessed during overground running in the barefoot and shod condition...
October 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28813978/evaluation-of-3d-printed-anatomically-scalable-transfemoral-prosthetic-knee
#10
Tyagi Ramakrishnan, Millicent Schlafly, Kyle B Reed
This case study compares a transfemoral amputee's gait while using the existing Ossur Total Knee 2000 and our novel 3D printed anatomically scalable transfemoral prosthetic knee. The anatomically scalable transfemoral prosthetic knee is 3D printed out of a carbon-fiber and nylon composite that has a gear-mesh coupling with a hard-stop weight-actuated locking mechanism aided by a cross-linked four-bar spring mechanism. This design can be scaled using anatomical dimensions of a human femur and tibia to have a unique fit for each user...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813971/feasibility-study-of-transtibial-amputee-walking-using-a-powered-prosthetic-foot
#11
Martin Grimmer, Matthew Holgate, Jeffrey Ward, Alexander Boehler, Andre Seyfarth
Passive prosthetic feet are not able to provide non-amputee kinematics and kinetics for the ankle joint. Persons with amputations show reduced interlimb symmetry, slower walking speeds, and increased walking effort. To improve ankle range of motion and push off, various powered prosthetic feet were introduced. This feasibility study analyzed if predefined motor reference trajectories can be used to achieve non-amputee ankle biomechanics during walking with the powered prosthetic foot, Walk-Run Ankle. Trajectories were calculated using the desired ankle angle and ankle moment based spring deflection at a given spring stiffness...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28796755/the-effect-of-lumbar-disc-herniation-on-musculoskeletal-loadings-in-the-spinal-region-during-level-walking-and-stair-climbing
#12
Shengzheng Kuai, Zhenhua Liao, Wenyu Zhou, Xinyu Guan, Run Ji, Rui Zhang, Daiqi Guo, Weiqiang Liu
BACKGROUND People with low back pain (LBP) alter their motion patterns during level walking and stair climbing due to pain or fear. However, the alternations of load sharing during the two activities are largely unknown. The objective of this study was to investigate the effect of LBP caused by lumbar disc herniation (LDH) on the muscle activities of 17 main trunk muscle groups and the intradiscal forces acting on the five lumbar discs. MATERIAL AND METHODS Twenty-six healthy adults and seven LDH patients were recruited to perform level walking and stair climbing in the Gait Analysis Laboratory...
August 10, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28783555/hamstring-and-calf-muscle-activation-as-a-function-of-bodyweight-support-during-treadmill-running-in-acl-reconstructed-athletes
#13
Clint Hansen, Einar Einarson, Athol Thomson, Rodney Whiteley, Erik Witvrouw
Rehabilitation after injury and reconstruction to the anterior cruciate ligament is thought to require a gradual reintroduction of loading, particularly during resumption of running. One strategy to achieve this is via the use of a reduced-gravity treadmill but it is unknown, if and how muscle activity varies in the reduced gravity conditions compared to regular treadmill running. Nineteen healthy participants and 18 male patients at the end of their rehabilitation (8 with a bone-patellar-bone graft, 10 with a hamstring graft) participated in this multi-muscle surface electromyography (sEMG) running study...
July 29, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28772129/the-effects-of-ankle-braces-and-taping-on-lower-extremity-running-kinematics-and-energy-expenditure-in-healthy-non-injured-adults
#14
Kaori Tamura, Kara N Radzak, Rachele E Vogelpohl, Bethany A Wisthoff, Yukiya Oba, Ronald K Hetzler, Christopher D Stickley
Ankle braces and taping are commonly used to prevent ankle sprains and allow return to play following injury, however, it is unclear how passive restriction of joint motion may effect running gait kinematics and energy expenditure during exercise. The purpose of this study was to determine the effect of different types of ankle supports on lower extremity kinematics and energy expenditure during continuous running. Thirteen healthy physically active adults ran at self-selected speed on the treadmill for 30min in four different ankle support conditions: semi-rigid hinged brace, lace-up brace, tape and control...
July 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28767525/comparison-of-lower-limb-and-back-exercises-for-runners-with-chronic-low-back-pain
#15
Congcong Cai, Yifan Yang, Pui W Kong
INTRODUCTION: This single-blind randomized trial was conducted to compare the treatment effect of lower limb (LL) exercises versus conventional lumbar extensor (LE) and lumbar stabilization (LS) exercises in recreational runners with chronic low back pain (cLBP), since there is currently no specific protocol for managing runners with cLBP. METHODS: 84 recreational runners with cLBP were allocated to three exercise groups (LL, LE, LS) for an 8-week intervention. Outcome measures included self-rated pain and running capability, lower limb strength, back muscles function, and running gait...
July 31, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28761792/plantar-pressure-distribution-of-ostrich-during-locomotion-on-loose-sand-and-solid-ground
#16
Rui Zhang, Dianlei Han, Songsong Ma, Gang Luo, Qiaoli Ji, Shuliang Xue, Mingming Yang, Jianqiao Li
BACKGROUND: The ostrich is a cursorial bird with extraordinary speed and endurance, especially in the desert, and thus is an ideal large-scale animal model for mechanic study of locomotion on granular substrate. METHODS: The plantar pressure distributions of ostriches walking/running on loose sand/solid ground were recorded using a dynamic pressure plate. RESULTS: The center of pressure (COP) on loose sand mostly originated from the middle of the 3rd toe, which differed from the J-shaped COP trajectory on solid ground...
2017: PeerJ
https://www.readbyqxmd.com/read/28760130/neglected-bilateral-congenital-dislocation-of-the-patella
#17
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/28750263/biomechanical-differences-between-cases-with-chronic-exertional-compartment-syndrome-and-asymptomatic-controls-during-walking-and-marching-gait
#18
Andrew Roberts, David Roscoe, David Hulse, Alexander N Bennett, Sharon Dixon
Chronic exertional compartment syndrome is a significant problem in military populations that may be caused by specific military activities. This study aimed to investigate the kinematic and kinetic differences in military cases with chronic exertional compartment syndrome and asymptomatic controls. 20 males with symptoms of chronic exertional compartment syndrome of the anterior compartment and 20 asymptomatic controls were studied. Three-dimensional lower limb kinematics and kinetics were compared during walking and marching...
July 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28749699/patellofemoral-joint-loads-during-running-at-the-time-of-return-to-sport-in-elite-athletes-with-acl-reconstruction
#19
Lee Herrington, Saud Alarifi, Richard Jones
BACKGROUND: Patellofemoral joint pain and degeneration are common in patients who undergo anterior cruciate ligament reconstruction (ACLR). The presence of patellofemoral joint pain significantly affects the patient's ability to continue sport participation and may even affect participation in activities of daily living. The mechanisms behind patellofemoral joint pain and degeneration are unclear, but previous research has identified altered patellofemoral joint loading in individuals with patellofemoral joint pain when running...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28740745/investigating-the-running-abilities-of-tyrannosaurus-rex-using-stress-constrained-multibody-dynamic-analysis
#20
William I Sellers, Stuart B Pond, Charlotte A Brassey, Philip L Manning, Karl T Bates
The running ability of Tyrannosaurus rex has been intensively studied due to its relevance to interpretations of feeding behaviour and the biomechanics of scaling in giant predatory dinosaurs. Different studies using differing methodologies have produced a very wide range of top speed estimates and there is therefore a need to develop techniques that can improve these predictions. Here we present a new approach that combines two separate biomechanical techniques (multibody dynamic analysis and skeletal stress analysis) to demonstrate that true running gaits would probably lead to unacceptably high skeletal loads in T...
2017: PeerJ
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