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Lower limb kinematics

Kento Nakagawa, Saeko Kawashima, Nobuaki Mizuguchi, Kazuyuki Kanosue
Periodic interlimb coordination shows lower performance when the ipsilateral hand and foot (e.g., right hand and right foot) are simultaneously moved than when the contralateral hand and foot (e.g., right hand and left foot) are simultaneously moved. The present study aimed to investigate how brain activity that is related to the dependence of hand-foot coordination on limb combination, using functional magnetic imaging. Twenty-one right-handed subjects performed periodic coordinated movements of the ipsilateral or contralateral hand and foot in the same or opposite direction in the sagittal plane...
2016: Frontiers in Human Neuroscience
Mark W Creaby, Conor Honeywill, Melinda M Franettovich Smith, Anthony G Schache, Kay M Crossley
PURPOSE: Achilles tendinopathy (AT) is a prevalent injury in running sports. Understanding the biomechanical factors associated with AT will assist in its management and prevention. The purpose of this study was to compare hip and ankle kinematics and kinetics in runners with and without AT. METHODS: Fourteen male runners with AT and eleven healthy male runners (CTRL) ran over-ground whilst lower-limb joint motion and ground reaction force data were synchronously captured...
October 17, 2016: Medicine and Science in Sports and Exercise
Jorida Fernandes, Sanjiv Kumar
Because of the rising prevalence of cancer, many individuals are living with the side effects of cancer and its treatment. One of the possible side effects is chemotherapy-induced peripheral neuropathy (CIPN). The purpose of the study was to examine the effect of lower limb closed kinematic chain exercises on balance in patients with CIPN. The study design was a single group pre-post experimental one. The study was conducted at a tertiary care cancer hospital. A total of 25 individuals with CIPN and aged 30 years and older were recruited using the Modified Total Neuropathy Score higher than 5...
September 30, 2016: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
E K Greska, N Cortes, S I Ringleb, J A Onate, B L Van Lunen
Previous studies have shown conflicting information regarding leg dominance as an etiological factor for the risk of anterior cruciate ligament (ACL) injuries. It remains unclear if lower extremity neuromechanical limb asymmetries exist in experienced athletes. The purpose of this study was to evaluate lower extremity neuromechanical effects of leg dominance in female collegiate soccer athletes during an unanticipated side-step cutting task. Twenty female collegiate soccer players completed an unanticipated side-step cutting task, using their dominant and non-dominant legs...
October 17, 2016: Scandinavian Journal of Medicine & Science in Sports
Ana Paula Silva, Daniel das Virgens Chagas, Maria Lúcia Cavaliere, Sérgio Pinto, José Silvio de Oliveira Barbosa, Luiz Alberto Batista
OBJECTIVE: To analyse the subtalar eversion range of motion during walking in women with fibromyalgia. METHOD: Twenty women diagnosed with fibromyalgia were directed to walk barefoot at comfortable and self-paced speed on a 7m walkway. Subtalar eversion range of motion was measured using the difference between the maximum and minimum values of subtalar eversion in stance phase. A range of motion between 4°-6° was considered as reference values for subtalar eversion during gait...
September 28, 2016: Foot
Fan Zhang, Peter Bohlen, Michael D Lewek, He Huang
This study investigated the feasibility of predicting intrinsically caused trips (ICTs) in individuals with stroke. Gait kinematics collected from twelve individuals with chronic stroke, who demonstrated ICTs in treadmill walking, were analyzed. A prediction algorithm based on the outlier principle was employed. Sequential forward selection (SFS) and minimum-redundancy- maximum-relevance (mRMR) were used separately to identify the precursors for accurate ICT prediction. The results showed that it was feasible to predict ICTs around 50- 260ms before ICTs occurred in the swing phase by monitoring lower limb kinematics during the preceding stance phase...
October 11, 2016: IEEE Transactions on Neural Systems and Rehabilitation Engineering
Mariano Serrao, Martina Rinaldi, Alberto Ranavolo, Francesco Lacquaniti, Giovanni Martino, Luca Leonardi, Carmela Conte, Tiwana Varrecchia, Francesco Draicchio, Gianluca Coppola, Carlo Casali, Francesco Pierelli
BACKGROUND: Spastic gait is a key feature in patients with hereditary spastic paraparesis, but the gait characterization and the relationship between the gait impairment and clinical characteristics have not been investigated. OBJECTIVES: To describe the gait patterns in hereditary spastic paraparesis and to identify subgroups of patients according to specific kinematic features of walking. METHODS: We evaluated fifty patients by computerized gait analysis and compared them to healthy participants...
2016: PloS One
Marie Bagger Bohn, Annemette Krintel Petersen, Dennis Brandborg Nielsen, Henrik Sørensen, Martin Lind
BACKGROUND: Anterior cruciate ligament (ACL) deficiency leads to altered stability of the knee. The purpose of this study was to compare the dynamic, rotational stability of the knee, expressed as rotational stiffness, between anterior cruciate ligament-deficient (ACLD) knees, their contralateral intact knees (ACLI) and a knee healthy control group during walking, running and 90° pivoting. We hypothesized a larger tibial internal rotation, a smaller knee joint external moment and a lower rotational stiffness in the ACLD group compared to the ACLI and the control group...
December 2016: Journal of Experimental Orthopaedics
C Pizzolato, M Reggiani, L Modenese, D G Lloyd
Real-time estimation of joint angles and moments can be used for rapid evaluation in clinical, sport, and rehabilitation contexts. However, real-time calculation of kinematics and kinetics is currently based on approximate solutions or generic anatomical models. We present a real-time system based on OpenSim solving inverse kinematics and dynamics without simplifications at 2000 frame per seconds with less than 31.5 ms of delay. We describe the software architecture, sensitivity analyses to minimise delays and errors, and compare offline and real-time results...
October 10, 2016: Computer Methods in Biomechanics and Biomedical Engineering
Alireza Rastegarpanah, Mozafar Saadat
The aim of this study is to investigate the performance of a 6-DoF parallel robot in tracking the movement of the foot trajectory of a paretic leg during a single stride. The foot trajectories of nine patients with a paretic leg including both males and females have been measured and analysed by a Vicon system in a gait laboratory. Based on kinematic and dynamic analysis of a 6-DoF UPS parallel robot, an algorithm was developed in MATLAB to calculate the length of the actuators and their required forces during all trajectories...
2016: Applied Bionics and Biomechanics
Ye Ding, Fausto A Panizzolo, Christopher Siviy, Philippe Malcolm, Ignacio Galiana, Kenneth G Holt, Conor J Walsh
BACKGROUND: Recent advances in wearable robotic devices have demonstrated the ability to reduce the metabolic cost of walking by assisting the ankle joint. To achieve greater gains in the future it will be important to determine optimal actuation parameters and explore the effect of assisting other joints. The aim of the present work is to investigate how the timing of hip extension assistance affects the positive mechanical power delivered by an exosuit and its effect on biological joint power and metabolic cost during loaded walking...
October 3, 2016: Journal of Neuroengineering and Rehabilitation
Roberto E Quesada, Joshua M Caputo, Steven H Collins
Amputees using passive ankle-foot prostheses tend to expend more metabolic energy during walking than non-amputees, and reducing this cost has been a central motivation for the development of active ankle-foot prostheses. Increased push-off work at the end of stance has been proposed as a way to reduce metabolic energy use, but the effects of push-off work have not been tested in isolation. In this experiment, participants with unilateral transtibial amputation (N=6) walked on a treadmill at a constant speed while wearing a powered prosthesis emulator...
October 3, 2016: Journal of Biomechanics
R A Weinert-Aplin, M Twiste, H L Jarvis, A N Bennett, R J Baker
Amputees are known to walk with greater metabolic cost than able-bodied individuals and establishing predictors of metabolic cost from kinematic measures, such as centre of mass (CoM) motion, during walking are important from a rehabilitative perspective, as they can provide quantifiable measures to target during gait rehabilitation in amputees. While it is known that vertical CoM motion poorly predicts metabolic cost, CoM motion in the medial-lateral (ML) and anterior-posterior directions have not been investigated in the context of gait efficiency in the amputee population...
September 26, 2016: Gait & Posture
Suzi Edwards, Hiram C Brooke, Jill L Cook
OBJECTIVES: This study aimed to explore the differences in the magnitude of movement variability and strategies utilized during an unanticipated cut task between players with and without a history of groin pain. DESIGN: Cross-sectional design. SETTING: Biomechanics laboratory. PARTICIANTS: Male Australian football players with (HISTORY; n = 7) or without (CONTROL; n = 10) a history of groin pain. OUTCOME MEASURES: Three-dimensional ground reaction forces (GRF) and kinematics were recorded during 10 successful trials of an unanticipated cut task, and isokinetic hip adduction and abduction strength...
July 22, 2016: Physical Therapy in Sport
Chelsea Starbuck, Victoria Stiles, Daniel Urà, Matt Carré, Sharon Dixon
OBJECTIVES: To examine the influence of clay court frictional properties on tennis players' biomechanical response. DESIGN: Repeated measures. METHODS: Lower limb kinematic and force data were collected on sixteen university tennis players during 10×180° turns (running approach speed 3.9±0.20ms(-1)) on a synthetic clay surface of varying friction levels. To adjust friction levels the volume of sand infill above the force plate was altered (kg per m(2) surface area; 12, 16 and 20kgm(-2))...
September 1, 2016: Journal of Science and Medicine in Sport
J Jovic, V Bonnet, C Fattal, P Fraisse, Ch Azevedo Coste
This paper proposes a new control framework to restore the coordination between upper (functional) and lower (paralyzed) limbs in the context of functional electrical stimulation in completely paraplegic individuals. A kinematic decoupling between the lower and upper limbs controls the 3D whole-body center of mass location and the relative foot positions by acting only on the lower-limb joints. The upper limbs are free to move under voluntary control, and are seen as a perturbation for the lower limbs. An experimental validation of this paradigm using a humanoid robot demonstrates the real-time applicability and robustness of the method...
September 27, 2016: Medical Engineering & Physics
Charlotte Apps, Thorsten Sterzing, Thomas O'Brien, Mark Lake
Unstable shoes (US) continually perturb gait which can train the lower limb musculature, but muscle co-contraction and potential joint stiffness strategies are not well understood. A shoe with a randomly perturbing midsole (IM) may enhance these adaptations. This study compares ankle and knee joint stiffness, and ankle muscle co-contraction during walking and running in US, IM and a control shoe in 18 healthy females. Ground reaction forces, three-dimensional kinematics and electromyography of the gastrocnemius medialis and tibialis anterior were recorded...
September 20, 2016: Journal of Electromyography and Kinesiology
Emmanuelle Chaleat-Valayer, Agnès Troncy, Marion Montané, Soline Bellaiche, Eric Berthonnaud
OBJECTIVE: The goal of this preliminary study is to analyze the biomechanical strategies of spine, pelvis and lower limbs (LL) with tridimensional motion analysis during stand-to-sit task, an understudied movement in the literature, however, source of questioning in clinical practice. OBSERVATIONS: One female and one male, healthy participants, (respectively 28 and 48 years old) were included without history of pathology and with normal pelvic incidences. Participants performed stand-to-sit movements on a stool without using their hands...
September 2016: Annals of Physical and Rehabilitation Medicine
Bruno Dohin, Elie Haddad, Hassan Al Khoury Salem, Mohamed Merhez Kilani
OBJECTIVE: Hip internal rotation (HIR) during gait is one of the main functional disorders related to cerebral palsy (CP) in children. Most of the procedures proposed rotational osteotomy of the femur (FRO), (and/or tibia). However, multilevel surgery (SEMLS) including bone procedure, implicates more difficult and longer rehabilitation. When bone deformity is moderate, the authors hypothesized that FRO could be avoided. They developed a soft tissues procedure to improve HIR. The aim of the study was assessment of the procedure...
September 2016: Annals of Physical and Rehabilitation Medicine
Marie Laberge-Malo, Xavier Rodrigue, Céline Goyette, Annie Pouliot-Laforte, Audrey Parent, Isabelle Marcoux, Laurent Ballaz
OBJECTIVE: Fibula hemimelia is a congenital malformation of the lower limbs that is associated to aplasia or hypoplasia of the fibula. This condition is characterized by knee valgus which tends to increase over years in children walking with a below knee prosthesis. However, few recommendations are available regarding the optimal prosthesis alignment for amputated children with fibula hemimelia. The aim of this case study was to compare different prosthesis alignments and to assess their impact on knee joint moment in the frontal plane during walking...
September 2016: Annals of Physical and Rehabilitation Medicine
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