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Lower limb kinematics

N M S Luna, P R G Lucareli, V C Sales, D Speciali, A C Alonso, M D Peterson, R B M Rodrigues, E T Fonoffc, E R Barbosac, M J Teixeira, J M D A Greve
OBJECTIVE: The purpose of this study was to evaluate the effect of treadmill training with body weight support on gait kinematics parameters in patients with PD using DBS. DESIGN: Twelve patients completed the protocols (age: 60.9±10.6 years; disease duration: 20±7 years; and time since DBS surgery: 20±4 months). The same set of patients underwent two trainings protocols and four gait analyses (before and after each training). They received eight weeks of treadmill training without body weight support (16 sessions) in conjunction with physiotherapy program followed by six weeks of wash out period, followed by eight weeks of body-weight-supported treadmill training in conjunction with a same physiotherapy program...
2018: NeuroRehabilitation
Paula Finatto, Edson Soares Da Silva, Alexandre B Okamura, Bruna P Almada, Henrique B Oliveira, Leonardo A Peyré-Tartaruga
PURPOSE: Strength training improves distance running economy and performance. This finding is based predominantly on maximal and explosive strength programmes applied to locomotor muscles, particularly on the lower limbs. It is not certain whether a minimization of metabolic cost (Cmet) and an improvement in running performance is feasible with strength training of the postural and trunk muscles. METHODS: Using kinematic, neuromuscular and metabolic measurements of running at two different speeds before and after a 12-week Pilates training programme, we tested the hypothesis that core training might improve the running Cmet and performance of trained runners...
2018: PloS One
Tony Lin-Wei Chen, Duo Wai-Chi Wong, Zhi Xu, Qitao Tan, Yan Wang, Ameersing Luximon, Ming Zhang
Flip-flops may change walking gait pattern, increase muscle activity and joint loading, and predispose wearers to foot problems, despite that quantitative evidence is scarce. The purpose of this study was to examine the lower limb muscle co-contraction and joint contact force in flip-flops gait, and compare with those of barefoot and sports shoes walking. Ten healthy males were instructed to perform over-ground walking at self-selected speed under three footwear conditions: 1) barefoot, 2) sports shoes, and 3) thong-type flip-flops...
2018: PloS One
Tomohiro Gonjo, Carla McCabe, Ana Sousa, João Ribeiro, Ricardo J Fernandes, João Paulo Vilas-Boas, Ross Sanders
PURPOSE: The purpose of this study was to determine kinematic and energetic differences between front crawl and backstroke performed at the same aerobic speeds. METHODS: Ten male competitive swimmers performed front crawl and backstroke at a pre-determined sub-anaerobic threshold speed to assess energy cost (through oxygen uptake measurement) and kinematics (using three-dimensional videography to determine stroke frequency and length, intra-cycle velocity fluctuation, three-dimensional wrist and ankle speeds, and vertical and lateral ankle range of motion)...
March 19, 2018: European Journal of Applied Physiology
Alison N Agres, Tobias J Gehlen, Adamantios Arampatzis, William R Taylor, Georg N Duda, Sebastian Manegold
BACKGROUND: Although early functional rehabilitation (EFR) has been suggested to yield rapid functional recovery after Achilles tendon rupture (ATR) compared to conventional rehabilitation (CR), most quantitative assessments occur long after rehabilitation has been completed. Few data exist regarding the short-term functional gains during the healing period post-ATR. It remains unclear if EFR allows for an objectively faster return to function. The aim of this study was to examine EFR's effect on gait, plantarflexor strength, and tendon properties in early post-operative follow-ups...
March 5, 2018: Gait & Posture
Jill Alexander, Jim Richards, Obed Attah, Sam Cheema, Joanna Snook, Chloe Wisdell, Karen May, James Selfe
Delayed effects of a 20-min crushed ice application on knee joint position sense assessed by a functional task during a re-warming period. INTRODUCTION: The effect of cryotherapy on joint positioning presents conflicting debates as to whether individuals are at an increased risk of injury when returning to play following cryotherapy application at the lower limb. OBJECTIVES: The aim of this study was to investigate whether a 20 min application of crushed ice at the knee affects knee joint kinematics immediately post and up to 20 mins post ice removal, during a small knee bend...
March 6, 2018: Gait & Posture
Sandra Puentes, Hideki Kadone, Shigeki Kubota, Tetsuya Abe, Yukiyo Shimizu, Aiki Marushima, Yoshiyuki Sankai, Masashi Yamazaki, Kenji Suzuki
The Ossification of the Posterior Longitudinal Ligament (OPLL) is an idiopathic degenerative spinal disease which may cause motor deficit. For patients presenting myelopathy or severe stenosis, surgical decompression is the treatment of choice; however, despite adequate decompression residual motor impairment is found in some cases. After surgery, there is no therapeutic approach available for this population. The Hybrid Assistive Limb® (HAL) robot suit is a unique powered exoskeleton designed to predict, support, and enhance the lower extremities performance of patients using their own bioelectric signals...
2018: Frontiers in Neuroscience
Ikponmwonsa Ogbonmwan, Bhavesh D Kumar, Bruce Paton
BACKGROUND: Variations in lower-limb biomechanics have recurrently been associated as aetiological factors for Achilles tendinopathy. OBJECTIVE: To update a previous systematic review examining lower-limb gait biomechanics in Achilles tendinopathy. DESIGN: Systematic Review. DATA SOURCES: MEDLINE, EMBASE, CINAHL PLUS, SPORTDiscus and PUBMED databases searched from inception to May 2016. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Studies investigating adults with Achilles tendinopathy and lower-limb gait biomechanics including kinematics, kinetics, dynamic plantar-pressures, temporospatial parameters and muscle activity...
March 8, 2018: Gait & Posture
Laura Wallard, Sophie Boulet, Olivier Cornu, Jean-Emile Dubuc, Philippe Mahaudens, Didier Postlethwaite, Maïté Van Cauter, Christine Detrembleur
BACKGROUND: The gait mechanism requires an efficient intersegmental coordination in order to ensure the displacement of the body while simultaneously maintaining the postural stability. However, intersegmental coordination may be disrupted by neurological or orthopaedic involvement, this increasing the metabolic cost associated with excessive or prolonged muscle co-contraction. RESEARCH QUESTION: Our aim was to evaluate and to understand how hip OA affects lower limbs coordination during gait by using the kinematic segmental covariation law method and predict the energy expenditure...
March 7, 2018: Gait & Posture
Michael A Samaan, Stacie I Ringleb, Sebastian Y Bawab, Eric K Greska, Joshua T Weinhandl
The effects of ACL-reconstruction on lower extremity joint mechanics during performance of the Star Excursion Balance Test (SEBT) and Single Leg Hop (SLH) are limited. The purpose of this study was to determine if altered lower extremity mechanics occur during the SEBT and SLH after ACL-reconstruction. One female Division I collegiate athlete performed the SEBT and SLH tasks, bilaterally, both before ACL injury and 27 months after ACL-reconstruction. Maximal reach, hop distances, lower extremity joint kinematics and moments were compared between both time points...
March 15, 2018: Computer Methods in Biomechanics and Biomedical Engineering
Enda F Whyte, Chris Richter, Siobhan O'Connor, Kieran A Moran
Anterior cruciate ligament (ACL) injuries frequently occur during side cutting maneuvers when fatigued or reacting to the sporting environment. Trunk and hip biomechanics are proposed to influence ACL loading during these activities. However, the effects of fatigue and unanticipation on the biomechanics of the kinetic chain may be limited by traditional discrete point analysis. We recruited twenty-eight male, varsity, Gaelic footballers (21.7±2.2 years; 178.7±14.6m; 81.8±11.4kg) to perform anticipated and unanticipated side cutting maneuvers pre- and post- a high intensity, intermittent exercise protocol (HIIP)...
March 13, 2018: Journal of Strength and Conditioning Research
A F Martinez, G C Lessi, C Carvalho, F V Serrao
Kinematic changes have been correlated with different lower limb injuries. Movement is influenced by multiple factors and strength is one of the contributors that can influence it. Thus, the aim of this study was to evaluate the correlation among trunk and hip isometric strength with trunk and lower-limb kinematics during a single-leg drop vertical jump. Twenty-three healthy recreational women athletes aged between 18 and 35 years underwent isometric evaluation of hip abductor, hip extensor, and lateral trunk muscle strength and three-dimensional trunk and lower-limb kinematics during a single-leg drop vertical jump...
March 6, 2018: Journal of Strength and Conditioning Research
Giovanna Camparis Lessi, Rodrigo Scattone Silva, Fábio Viadanna Serrão
OBJECTIVES: Studies comparing the effects of fatigue between men and women after anterior cruciate ligament (ACL) reconstruction are lacking. The purpose of this study was to compare the effects of muscle fatigue on trunk, pelvis and lower limb kinematics and on lower limb muscle activation between male and female athletes who underwent ACL reconstruction. DESIGN: Cross-sectional study. SETTING: Laboratory setting. PARTICIPANTS: Fourteen recreational athletes (7 males and 7 females) with unilateral ACL reconstruction participated of this study...
February 5, 2018: Physical Therapy in Sport
Wen Wu, Justin Fong, Vincent Crocher, Peter V S Lee, Denny Oetomo, Ying Tan, David C Ackland
Robotic-assistive exoskeletons can enable frequent repetitive movements without the presence of a full-time therapist; however, human-machine interaction and the capacity of powered exoskeletons to attenuate shoulder muscle and joint loading is poorly understood. This study aimed to quantify shoulder muscle and joint force during assisted activities of daily living using a powered robotic upper limb exoskeleton (ArmeoPower, Hocoma). Six healthy male subjects performed abduction, flexion, horizontal flexion, reaching and nose touching activities...
February 21, 2018: Journal of Biomechanics
Priscila de Brito Silva, Natalie Mrachacz-Kersting, Anderson Souza Oliveira, Uwe Gustav Kersting
Standing on unstable surfaces requires more complex motor control mechanisms to sustain balance when compared to firm surfaces. Surface instability enhances the demand to maintain equilibrium and is often used to challenge balance, but little is known about how balance training affects movement strategies to control posture while standing on unstable surfaces. This study aimed at assessing the effects of isolated wobble board (WB) training on movement strategies to maintain balance during single-leg standing on a WB...
February 27, 2018: Human Movement Science
Sarah L Carter, Rebekha Duncan, Andries L Weidemann, Luke S Hopper
Turnout is a central element of classical ballet which involves sustained external rotation of the lower limbs during dance movements. Lower leg and foot compensation mechanisms which are often used to increase turnout have been attributed to the high incidence of lower limb injury in dancers. Evaluation of dancers' leg posture is needed to provide insight into the lower limb kinematic strategies used to achieve turnout. The primary purpose of this study was to use 3D kinematic analyses to determine the lower leg and foot compensations that are incorporated by female university dancers to accentuate their turnout...
March 2, 2018: Journal of Sports Sciences
Srinivas Pandit, Anoop Kant Godiyal, Amit Kumar Vimal, Upinderpal Singh, Deepak Joshi, Dinesh Kalyanasundaram
This paper proposes a novel and an affordable lower limb prosthesis to enable normal gait kinematics for trans-femoral amputees. The paper details the design of a passive prosthesis with magneto-rheological (MR) damping system and electronic control. A new control approach based on plantar insole feedback was employed here. Strategically placed sensors on the plantar insole provide required information about gait cycle to a finite state controller for suitable action. A proportional integral (PI) based current controller controls the required current for necessary damping during gait...
February 27, 2018: Sensors
Leo Ng, Simon M Rosalie, Dorianne Sherry, Wei Bing Loh, Andreas M Sjurseth, Shrikant Iyengar, Catherine Y Wild
Research has revealed that field hockey drag flickers have greater odds of hip and lumbar injuries compared to non-drag flickers (DF). This study aimed to compare the biomechanics of a field hockey hit and a specialised field hockey drag flick. Eighteen male and seven female specialised hockey DF performed a hit and a drag flick in a motion analysis laboratory with an 18-camera three-dimensional motion analysis system and a calibrated multichannel force platform to examine differences in lower limb and lumbar kinematics and kinetics...
March 1, 2018: Journal of Sports Sciences
AmirAli Jafarnezhadgero, Morteza Madadi-Shad, Christopher McCrum, Kiros Karamanidis
The aim of this study was to identify the effects of a corrective exercise program on landing ground reaction force characteristics and lower limb kinematics in older adults with genu valgus. Twenty six older male adults with genu valgus were randomized into two groups. An experimental group conducted a 14- week corrective exercise program, while a control group did not perform any exercise. The experimental group displayed lower peak vertical, peak anterior and posterior, and peak medial ground reaction force components during the post-test compared to the pre-test...
February 27, 2018: Journal of Aging and Physical Activity
Maria F Mostaed, David M Werner, Joaquin A Barrios
Background: The lateral step-down test is an established clinical evaluation tool to assess quality of movement in patients with knee disorders. However, this test has not been investigated in individuals after anterior cruciate ligament reconstruction (ACLR) in association with quantitative 3D motion analysis. Purposes: The purpose of this study was to determine the strength of association between visually-assessed quality of movement during the lateral step-down test and 3D lower limb kinematics in patients with history of ACLR...
February 2018: International Journal of Sports Physical Therapy
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