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Journal articles on the topic 'Reactive foot placement'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Castano, Juan Alejandro, Zhibin Li, Chengxu Zhou, Nikos Tsagarakis, and Darwin Caldwell. "Dynamic and Reactive Walking for Humanoid Robots Based on Foot Placement Control." International Journal of Humanoid Robotics 13, no. 02 (2016): 1550041. http://dx.doi.org/10.1142/s0219843615500413.

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This paper presents a novel online walking control that replans the gait pattern based on our proposed foot placement control using the actual center of mass (COM) state feedback. The analytic solution of foot placement is formulated based on the linear inverted pendulum model (LIPM) to recover the walking velocity and to reject external disturbances. The foot placement control predicts where and when to place the foothold in order to modulate the gait given the desired gait parameters. The zero moment point (ZMP) references and foot trajectories are replanned online according to the updated f

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Fleischmann, Jana, Guillaume Mornieux, Dominic Gehring, and Albert Gollhofer. "Medial Compressible Forefoot Sole Elements Reduce Ankle Inversion in Lateral SSC Jumps." Journal of Applied Biomechanics 29, no. 3 (2013): 346–53. http://dx.doi.org/10.1123/jab.29.3.346.

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Sideward movements are associated with high incidences of lateral ankle sprains. Special shoe constructions might be able to reduce these injuries during lateral movements. The purpose of this study was to investigate whether medial compressible forefoot sole elements can reduce ankle inversion in a reactive lateral movement, and to evaluate those elements’ influence on neuromuscular and mechanical adjustments in lower extremities. Foot placement and frontal plane ankle joint kinematics and kinetics were analyzed by 3-dimensional motion analysis. Electromyographic data of triceps surae, perone

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Li, Jinfeng, and Helen J. Huang. "Small directional treadmill perturbations induce differential gait stability adaptation." Journal of Neurophysiology 127, no. 1 (2022): 38–55. http://dx.doi.org/10.1152/jn.00091.2021.

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Little is known about if and how humans can adapt to small magnitude perturbations experienced on a stride-by-stride basis during walking. Here, we show that even small perturbations disrupted gait stability and that subjects could still adapt their reactive balance control. Depending on the perturbation direction, subjects might prefer adjusting their foot placement over their center of mass and vice versa. These findings could help potentially tune balance training to target specific aspects of balance.

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van der Veen, Susanne M., Ulrike Hammerbeck, and Kristen L. Hollands. "Foot-placement accuracy during planned and reactive target stepping during walking in stroke survivors and healthy adults." Gait & Posture 81 (September 2020): 261–67. http://dx.doi.org/10.1016/j.gaitpost.2020.08.114.

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HEINEN, THOMAS, ISABELL ARTMANN, ANJA BRINKER, and MARC NICOLAUS. "Task dependency of movement regulation in female gymnastic vaulting." Baltic Journal of Health and Physical Activity 7, no. 4 (2015): 61–72. http://dx.doi.org/10.29359/bjhpa.07.4.06.

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Background: In gymnastics vaulting it is thought that gymnasts regulate their run-up on the basis of visually perceived environmental information, such as the position of the springboard, with the aim of an accurate foot placement on the springboard. The question, however, arises if these regulative processes found in gymnastics vaulting can be generalized to other tasks with similar demands but differing dynamics? Material/Methods: To answer this question, ten female gymnasts were asked to perform two target-directed gymnastics tasks that were similar in task demands but differed in task dy-n

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Mathunny, Jaison Jacob, Hari Krishnan Srinivasan, Ashok Kumar, and Varshini Karthik. "A Cross-Sectional Study on Fall Direction and Lower Limb Loading in Response to a Perturbation on Laterally Inclined Platform." Applied Bionics and Biomechanics 2023 (October 27, 2023): 1–9. http://dx.doi.org/10.1155/2023/7385119.

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Perturbation-based balance training (PBT) improves reactive stepping in older adults and people with neurological disorders. Slip-induced falls are a threat to older adults, leading to hip fractures. Fall-prone individuals must be trained to regain balance during a fall in the posterolateral direction. This study aims to analyze the characteristics of the reactive step induced by a laterally inclined platform. This cross-sectional study included 46 healthy participants who performed a “lean and release” backward fall using a platform with two inclined angles on each side. Kinovea software was

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Haarman, Juliet A. M., Mark Vlutters, Keizer Richelle A. C. M. Olde, et al. "Paretic versus non-paretic stepping responses following pelvis perturbations in walking chronic-stage stroke survivors." Journal of NeuroEngineering and Rehabilitation 14, no. 1 (2017): 106. https://doi.org/10.1186/s12984-017-0317-z.

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<strong>Background: </strong>The effects of a stroke, such as hemiparesis, can severely hamper the ability to walk and to maintain balance during gait. Providing support to stroke survivors through a robotic exoskeleton, either to provide training or daily-life support, requires an understanding of the balance impairments that result from a stroke. Here, we investigate the differences between the paretic and non-paretic leg in making recovery steps to restore balance following a disturbance during walking.<strong>Methods: </strong>We perturbed 10 chronic-stage stroke survivors during walking u

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Zhang, Jiwen, Zeyang Xia, Li Liu, and Ken Chen. "Footstep adaptation strategy for reactive omnidirectional walking in humanoid robots." Robotica 36, no. 1 (2017): 57–77. http://dx.doi.org/10.1017/s0263574717000157.

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SUMMARYStability, high response quality and rapidity are required for reactive omnidirectional walking in humanoids. Early schemes focused on generating gaits for predefined footstep locations and suffered from the risk of falling over because they lacked the ability to suitably adapt foot placement. Later methods combining stride adaptation and center of mass (COM) trajectory modification experienced difficulties related to increasing computing loads and an unwanted bias from the desired commands. In this paper, a hierarchical planning framework is proposed in which the footstep adaption task

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Nieuwenhuijzen, P. H. J. A., and J. Duysens. "Proactive and Reactive Mechanisms Play a Role in Stepping on Inverting Surfaces During Gait." Journal of Neurophysiology 98, no. 4 (2007): 2266–73. http://dx.doi.org/10.1152/jn.01226.2006.

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Ankle inversions have been studied extensively during standing conditions. However, inversion traumas occur during more dynamic conditions, like walking. Therefore in this study sudden ankle inversions were elicited in 12 healthy subjects who stepped on a trap door while walking on a treadmill. First, 10 control trials (0° of rotation) were presented. Then, 20 stimulus (25° of rotation) and control trials were presented randomly. EMG recordings were made of six lower leg muscles. All muscles showed a short-latency response (SLR) of about 40 ms and a late-latency response (LLR) of about 90 ms.

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Raab, Stephanie, Julia Athans, Zachary Kroll, et al. "335 Ischemic conditioning improves dynamic balance during treadmill walking in chronic stroke survivors." Journal of Clinical and Translational Science 8, s1 (2024): 101–2. http://dx.doi.org/10.1017/cts.2024.299.

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OBJECTIVES/GOALS: Evaluate the use of IC to improve stroke survivors’ capacity for reactive stepping and adapt their gait cycles in response to a difficult walking environment. We hypothesize that IC will improve stroke survivors’ protective stepping response via improvements in muscle activation and motor learning METHODS/STUDY POPULATION: Stroke survivors have an impaired capacity for protective stepping. Decreased paretic muscle activation results in increased reaction time and reduced force generation. Ischemic conditioning (IC) is a vascular stimulus which improves motor performance in ch

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Miskiel, Sandra A., Steven A. Caruso, and Andre J. Pagliaro. "Masquelet Technique for Hindfoot Fusion of Gustilo IIIA Open Ankle Dislocation with Complete Talar Extrusion and Loss." Foot & Ankle Orthopaedics 4, no. 4 (2019): 2473011419S0030. http://dx.doi.org/10.1177/2473011419s00307.

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Category: Hindfoot, Trauma, Ankle Introduction/Purpose: Complete talar extrusion is a rare injury resulting from high-energy trauma, with dissociation of the talus from surrounding bony and soft-tissue structures. Complications after complete talar extrusion include infection, osteonecrosis, posttraumatic osteoarthritis, and leg-length discrepancy. There is a lack of consensus on the optimal treatment algorithm for complete talar extrusion, due in part to high complication rates associated with injury and treatment. Thus, we report a staged treatment method utilizing the Masquelet Technique wi

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van Leeuwen, A. M., J. H. van Dieën, A. Daffertshofer, and S. M. Bruijn. "Active foot placement control ensures stable gait: Effect of constraints on foot placement and ankle moments." PLOS ONE 15, no. 12 (2020): e0242215. http://dx.doi.org/10.1371/journal.pone.0242215.

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Step-by-step foot placement control, relative to the center of mass (CoM) kinematic state, is generally considered a dominant mechanism for maintenance of gait stability. By adequate (mediolateral) positioning of the center of pressure with respect to the CoM, the ground reaction force generates a moment that prevents falling. In healthy individuals, foot placement is complemented mainly by ankle moment control ensuring stability. To evaluate possible compensatory relationships between step-by-step foot placement and complementary ankle moments, we investigated the degree of (active) foot plac

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Sawmiller, D. R., and C. C. Chou. "Role of adenosine in postprandial and reactive hyperemia in canine jejunum." American Journal of Physiology-Gastrointestinal and Liver Physiology 263, no. 4 (1992): G487—G493. http://dx.doi.org/10.1152/ajpgi.1992.263.4.g487.

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The role of adenosine in postprandial jejunal hyperemia was investigated by determining the effect of placement of predigested food into the jejunal lumen on blood flow and oxygen consumption before and during intra-arterial infusion of dipyridamole (1.5 microM arterial concn) or adenosine deaminase (9 U/ml arterial concn) in anesthetized dogs. Neither drug significantly altered resting jejunal blood flow and oxygen consumption. Before dipyridamole or deaminase, food placement increased blood flow by 30-36%, 26-42%, and 21-46%, and oxygen consumption by 13-22%, 21-22%, and 26-29%, during 0- to

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Jabeen, Saher, Patricia M. Baines, Jaap Harlaar, Heike Vallery, and Andrew Berry. "Reaction moments matter when designing lower-extremity robots for tripping recovery." PLOS ONE 18, no. 2 (2023): e0280158. http://dx.doi.org/10.1371/journal.pone.0280158.

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Balance recovery after tripping often requires an active adaptation of foot placement. Thus far, few attempts have been made to actively assist forward foot placement for balance recovery employing wearable devices. This study aims to explore the possibilities of active forward foot placement through two paradigms of actuation: assistive moments exerted with the reaction moments either internal or external to the human body, namely ‘joint’ moments and ‘free’ moments, respectively. Both paradigms can be applied to manipulate the motion of segments of the body (e.g., the shank or thigh), but joi

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Stevermer, Catherine A., and Jason C. Gillette. "Kinematic and Kinetic Indicators of Sit-to-Stand." Journal of Applied Biomechanics 32, no. 1 (2016): 7–15. http://dx.doi.org/10.1123/jab.2014-0189.

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Variation in the timing indicators separating sit-to-stand (STS) into movement phases complicates both research comparisons and clinical applications. The purpose of this study was to use kinetic reference standards to identify accurate kinematic and kinetic indicators for STS movement analysis such that consistent indicators might be used for STS from varied initial postures. Healthy adults performed STS using 4 foot placements: foot-neutral, foot-back, right-staggered, and left-staggered. Kinetic and kinematic data were collected from force platforms and an 8-camera video system. Initiation,

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McClay, I. S., and P. R. Cavanagh. "Relationship between foot placement and mediolateral ground reaction forces during running." Clinical Biomechanics 9, no. 2 (1994): 117–23. http://dx.doi.org/10.1016/0268-0033(94)90034-5.

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Sinclair, Jonathan, Paul John Taylor, Gareth Shadwell, et al. "Two-Experiment Examination of Habitual and Manipulated Foot Placement Angles on the Kinetics, Kinematics, and Muscle Forces of the Barbell Back Squat in Male Lifters." Sensors 22, no. 18 (2022): 6999. http://dx.doi.org/10.3390/s22186999.

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This two-experiment study aimed to examine the effects of different habitual foot placement angles and also the effects of manipulating the foot placement angle on the kinetics, three-dimensional kinematics and muscle forces of the squat. In experiment 1, seventy lifters completed squats at 70% of their one repetition maximum using a self-preferred placement angle. They were separated based on their habitual foot angle into three groups HIGH, MEDIUM and LOW. In experiment 2, twenty lifters performed squats using the same relative mass in four different foot placement angle conditions (0°, 21°,

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A.H.Hilmi and A.R.A.Hamid. "Current Issues Related to Biomechanics in Engineering." Malaysian Journal of Ergonomics (MJEr) 4 (June 12, 2024): 36–50. http://dx.doi.org/10.58915/mjer.v4.2022.738.

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Motion capture was employed by Eadweard Muybridge and Etienne-Jules Marey. Industry standard for computing joint kinematics is motion capture. Kinematic analysis is a technique used in biomechanics and mechanical engineering to quantify stiff body motion. A joint moment can be computed in one of two ways: bottom-up or top-down. Joint moments measure muscle and joint tension indirectly. Researchers predicted joint moments using kinematic-based characteristics and machine learning outside of the biomechanics lab.Ankle osteoarthritis causes significant biomechanical issues in the foot and lower l

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Wearing, Scott C., James E. Smeathers, and Stephen R. Urry. "Frequency-Domain Analysis Detects Previously Unidentified Changes in Ground Reaction Force with Visually Guided Foot Placement." Journal of Applied Biomechanics 19, no. 1 (2003): 71–78. http://dx.doi.org/10.1123/jab.19.1.71.

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Studies investigating the effect of targeting on gait have focused on the analysis of ground reaction force (GRF) within the time domain. Analysis within the frequency domain may be a more sensitive method for evaluating variations in GRF. The aim of the present study was to investigate the effect of visual targeting on GRF analyzed within the frequency domain. A within-subject repeated-measures design was used to measure the mediolateral, vertical, and antero-posterior components of the GRF of 11 healthy volunteers while walking at their own pace over a paper-covered walkway. A 30 × 24-cm tar

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PAN, JING WEN, THORSTEN STERZING, JUN WEI PANG, YAOHUI KELVIN CHUA, and PUI WAH KONG. "EFFECTIVENESS OF FLOOR MARKINGS FOR CONTROLLING CUT WIDTH DURING SIDE CUTTING TASKS IN LABORATORY EXPERIMENTS." Journal of Mechanics in Medicine and Biology 20, no. 01 (2020): 1950076. http://dx.doi.org/10.1142/s0219519419500763.

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This study examined the effectiveness of floor markings for controlling cut width during the analysis of side cutting maneuvers. Eleven male basketball players performed two side cutting maneuvers of narrow (30[Formula: see text]cm) and wide (45[Formula: see text]cm) cut widths and were guided by floor markings. Ground reaction forces, together with ankle, knee, and hip joint ranges of motion (ROM), and respective joint moments were determined. Cut widths were verified by two approaches by calculating the actual foot-to-foot and foot-to-pelvis distances from motion data. Biomechanical lower ex

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Hussaini, Syed H., Daniel M. Dean, Michael Kelly, and Daniel J. Cuttica. "Safety Profile of Artelon Use for Soft Tissue Reconstruction in Foot and Ankle Surgery." Foot & Ankle Orthopaedics 5, no. 4 (2020): 2473011420S0026. http://dx.doi.org/10.1177/2473011420s00265.

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Category: Basic Sciences/Biologics; Ankle; Hindfoot; Midfoot/Forefoot; Sports Introduction/Purpose: Artelon is a synthetic degradable polyurethaneurea graft which has been investigated and utilized for soft tissue reconstruction in a variety of orthopaedic settings. However, in the field of foot and ankle surgery, there is very limited reported clinical data on outcomes of surgery utilizing Artelon. The goal of this study was look at outcomes of foot and ankle surgery in which Artelon is used, including post-op VAS scores and complications including adverse foreign body reaction, infection, re

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Cho, HyeYoung, and Shirley Rietdyk. "The effect of visual sensory interference during multitask obstacle crossing in younger and older adults." PLOS ONE 19, no. 5 (2024): e0302838. http://dx.doi.org/10.1371/journal.pone.0302838.

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When older adults step over obstacles during multitasking, their performance is impaired; the impairment results from central and/or sensory interference. The purpose was to determine if sensory interference alters performance under low levels of cognitive, temporal, and gait demand, and if the change in performance is different for younger versus older adults. Participants included 17 younger adults (20.9±1.9 years) and 14 older adults (69.7±5.4 years). The concurrent task was a single, simple reaction time (RT) task: depress button in response to light cue. The gait task was stepping over an

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Erdemir, Ahmet, and Stephen J. Piazza. "Rotational foot placement specifies the lever arm of the ground reaction force during the push-off phase of walking initiation." Gait & Posture 15, no. 3 (2002): 212–19. http://dx.doi.org/10.1016/s0966-6362(01)00192-8.

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Zago, Matteo, Marco Tarabini, Martina Delfino Spiga, et al. "Machine-Learning Based Determination of Gait Events from Foot-Mounted Inertial Units." Sensors 21, no. 3 (2021): 839. http://dx.doi.org/10.3390/s21030839.

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A promising but still scarcely explored strategy for the estimation of gait parameters based on inertial sensors involves the adoption of machine learning techniques. However, existing approaches are reliable only for specific conditions, inertial measurements unit (IMU) placement on the body, protocols, or when combined with additional devices. In this paper, we tested an alternative gait-events estimation approach which is fully data-driven and does not rely on a priori models or assumptions. High-frequency (512 Hz) data from a commercial inertial unit were recorded during 500 steps performe

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Biscarini, Andrea, Fabio M. Botti, and Vito E. Pettorossi. "Joint Torques and Joint Reaction Forces During Squatting With a Forward or Backward Inclined Smith Machine." Journal of Applied Biomechanics 29, no. 1 (2013): 85–97. http://dx.doi.org/10.1123/jab.29.1.85.

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We developed a biomechanical model to determine the joint torques and loadings during squatting with a backward/forward-inclined Smith machine. The Smith squat allows a large variety of body positioning (trunk tilt, foot placement, combinations of joint angles) and easy control of weight distribution between forefoot and heel. These distinctive aspects of the exercise can be managed concurrently with the equipment inclination selected to unload specific joint structures while activating specific muscle groups. A backward (forward) equipment inclination decreases (increases) knee torque, and co

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Cui, Chuyi, Ashwini Kulkarni, Shirley Rietdyk, and Satyajit Ambike. "Locomotion control during curb descent: Bilateral ground reaction variables covary consistently during the double support phase regardless of future foot placement constraints." PLOS ONE 17, no. 10 (2022): e0268090. http://dx.doi.org/10.1371/journal.pone.0268090.

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During community ambulation, anticipatory adaptations in gait are key for navigating built, populated and natural environments. It has been argued that some instability in gait can be functionally beneficial in situations demanding high maneuverability, and while the mechanisms utilized to maintain locomotor balance are well understood, relatively less is known about how the control of gait stability changes to facilitate upcoming maneuvers in challenging environments. The double support phase may be important in this regard; since both feet can push off the ground simultaneously, there is gre

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Sison, Harn, Photchara Ratsamee, Manabu Higashida, Yuki Uranishi, and Haruo Takemura. "Generation of Inverted Locomotion Gait for Multi-Legged Robots Using a Spherical Magnetic Joint and Adjustable Sleeve." Journal of Robotics and Mechatronics 35, no. 5 (2023): 1227–42. http://dx.doi.org/10.20965/jrm.2023.p1227.

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In this paper, we propose the design and implementation of spherical magnetic joint (SMJ)-based gait generation for the inverted locomotion of multi-legged robots. A spherical permanent magnet was selected to generate a consistent attractive force, enabling the robot to perform inverted locomotion under steel structures. Additionally, the robot’s foot tip was designed as a balljoint mechanism, providing flexibility in foot placement at any angle between the tip and surface. We also introduced an adjustable sleeve mechanism to detach the foot tip during locomotion by creating a fulcrum during t

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Sancho-Bru, Joaquín L., Enrique Sanchis-Sales, Pablo J. Rodríguez-Cervantes, and Carles Vergés-Salas. "Foot Sole Contact Forces vs. Ground Contact Forces to Obtain Foot Joint Moments for In-Shoe Gait—A Preliminary Study." Sensors 23, no. 15 (2023): 6744. http://dx.doi.org/10.3390/s23156744.

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In-shoe models are required to extend the clinical application of current multisegment kinetic models of the bare foot to study the effect of foot orthoses. Work to date has only addressed marker placement for reliable kinematic analyses. The purpose of this study is to address the difficulties of recording contact forces with available sensors. Ten participants walked 5 times wearing two different types of footwear by stepping on a pressure platform (ground contact forces) while wearing in-shoe pressure sensors (foot sole contact forces). Pressure data were segmented by considering contact ce

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Frossard, Laurent, Laurence Cheze, and Raphael Dumas. "Dynamic input to determine hip joint moments, power and work on the prosthetic limb of transfemoral amputees: ground reaction vs knee reaction." Prosthetics and Orthotics International 35, no. 2 (2011): 140–49. http://dx.doi.org/10.1177/0309364611409002.

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Background: Calculation of lower limb kinetics is limited by floor-mounted force-plates. Objectives: Comparison of hip joint moments, power and mechanical work on the prosthetic limb of a transfemoral amputee calculated by inverse dynamics using either the ground reactions (force-plates) or knee reactions (transducer). Study design: Comparative analysis. Methods: Kinematics, ground reaction and knee reaction data were collected using a motion analysis system, two force-plates, and a multi-axial transducer mounted below the socket, respectively. Results: The inverse dynamics using ground reacti

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Noh, Hyeon-Je, Chang-Yong Kim, Hyeong-Dong Kim, and Suhng-Wook Kim. "Changes in Muscle Activation and Ground Reaction Force of the Lower Limbs According to Foot Placement During Sit-to-Stand Training in Stroke Patients." American Journal of Physical Medicine & Rehabilitation 99, no. 4 (2020): 330–37. http://dx.doi.org/10.1097/phm.0000000000001335.

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Lord, Stephen, Joana Caetano, and Jasmine Menant. "160 Gait Adaptability in Older People and People with PD." Age and Ageing 48, Supplement_4 (2019): iv34—iv39. http://dx.doi.org/10.1093/ageing/afz164.160.

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Abstract The ability to adapt gait when negotiating unexpected hazards is crucial to maintain stability and avoid falling. This presentation will present findings from a series of studies that have investigated cognitive, physical and psychological factors associated with gait adaptability required for obstacle and stepping target negotiation in older people and people with Parkinson’s disease (PD). The first studies involved fifty healthy older adults (mean±SD: 74±7 years). The gait adaptability protocol required them to either (a) avoid an obstacle at usual step distance or (b) step onto a t

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Širok, Brane, Jurij Gostiša, Matej Sečnik, Krzysztof Mackala, and Milan Čoh. "Application of Wind Tunnel Device for Evaluation of Biokinetic Parameters of Running." Symmetry 13, no. 3 (2021): 505. http://dx.doi.org/10.3390/sym13030505.

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The aim of the study was the application of high-tech wind tunnel device to identify the changes in the biokinetic parameters of running performed on the specially designed treadmill. The research was carried out in the “Planica Nordic Centre—PNC” in the wind tunnel system, where the AirRunner Assault treadmill, which was equipped with four sensors measuring the vertical and horizontal ground reaction forces, was installed. To obtain biokinetic data, the runners performed the treadmill’s run under conditions of airflow directed at each participant’s back (backwind speeds +3 m/s and +5 m/s) and

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Abka-khajouei, Roya, Latifa Tounsi, Nasim Shahabi, Anil Kumar Patel, Slim Abdelkafi, and Philippe Michaud. "Structures, Properties and Applications of Alginates." Marine Drugs 20, no. 6 (2022): 364. http://dx.doi.org/10.3390/md20060364.

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Alginate is a hydrocolloid from algae, specifically brown algae, which is a group that includes many of the seaweeds, like kelps and an extracellular polymer of some bacteria. Sodium alginate is one of the best-known members of the hydrogel group. The hydrogel is a water-swollen and cross-linked polymeric network produced by the simple reaction of one or more monomers. It has a linear (unbranched) structure based on d-mannuronic and l-guluronic acids. The placement of these monomers depending on the source of its production is alternating, sequential and random. The same arrangement of monomer

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Hollander, Karsten, Dominik Liebl, Stephanie Meining, Klaus Mattes, Steffen Willwacher, and Astrid Zech. "Adaptation of Running Biomechanics to Repeated Barefoot Running: A Randomized Controlled Study." American Journal of Sports Medicine 47, no. 8 (2019): 1975–83. http://dx.doi.org/10.1177/0363546519849920.

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Background: Previous studies have shown that changing acutely from shod to barefoot running induces several changes to running biomechanics, such as altered ankle kinematics, reduced ground-reaction forces, and reduced loading rates. However, uncertainty exists whether these effects still exist after a short period of barefoot running habituation. Purpose/Hypothesis: The purpose was to investigate the effects of a habituation to barefoot versus shod running on running biomechanics. It was hypothesized that a habituation to barefoot running would induce different adaptations of running kinetics

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Bouyer, L. J. G., and S. Rossignol. "Contribution of Cutaneous Inputs From the Hindpaw to the Control of Locomotion. I. Intact Cats." Journal of Neurophysiology 90, no. 6 (2003): 3625–39. http://dx.doi.org/10.1152/jn.00496.2003.

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The goal of this study was to evaluate the role of hindpaw cutaneous feedback in the control of locomotion, by cutting some (in one cat) or all (in 2 cats) cutaneous nerves bilaterally at ankle level. Kinematic and electromyographic (EMG) recordings were obtained before and for several weeks after denervation during level and incline (15° up and down) treadmill walking. Ladder walking and ground reaction forces were also documented sporadically. Early after the denervation (1–3 days), cats could not walk across a ladder, although deficits were small during level treadmill walking. Increased kn

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Stramel, Danielle Marie, Lauren Winterbottom, Joel Stein, and Sunil K. Agrawal. "Overground Robotic Gait Trainer mTPAD Improves Gait Symmetry and Weight Bearing in Stroke Survivors." Bioengineering 10, no. 6 (2023): 698. http://dx.doi.org/10.3390/bioengineering10060698.

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Stroke is a leading cause of disability, impairing the ability to generate propulsive forces and causing significant lateral gait asymmetry. We aim to improve stroke survivors’ gaits by promoting weight-bearing during affected limb stance. External forces can encourage this; e.g., vertical forces can augment the gravitational force requiring higher ground reaction forces, or lateral forces can shift the center of mass over the stance foot, altering the lateral placement of the center of pressure. With our novel design of a mobile Tethered Pelvic Assist Device (mTPAD) paired with the DeepSole s

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Abdelkader, Samer, Amy Dawn Hendrix-Dicken, and Michelle Condren. "The Impact of Montelukast’s Black Box Warning on Pediatric Mental Health Adverse Event Reports." Journal of Pediatric Pharmacology and Therapeutics 28, no. 8 (2023): 704–9. http://dx.doi.org/10.5863/1551-6776-28.8.704.

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OBJECTIVE In March 2020, the US Food and Drug Administration (FDA) required a black box warning for montelukast due to serious mental health side effects. We hypothesized the warning would lead to an overall decrease in reports of mental health symptoms and disorders related to montelukast in both pre-adolescent and adolescent groups. METHODS Adverse events of pre-adolescent and adolescent children taking montelukast sodium were reviewed from March 1, 2018 to March 3, 2020 and March 4, 2020 to February 28, 2022 using the FDA’s Adverse Events Reporting System. The objective was to determine if

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Panda, D., AK Nayak, and S. Mohanty. "Nitrogen management in rice." Oryza-An International Journal on Rice 56, Special Issue (2019): 125–35. http://dx.doi.org/10.35709/ory.2019.56.s.5.

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Nitrogen is the one of most limiting nutrient for rice production, and in India rice cultivation alone accounts approximately 37% of the total fertilizer-N consumption in the year 1917-18. However, 60-70% of applied N is lost from the rice ecosystem system in the form of reactive N species such as ammonia (NH3), nitrous oxide (N2O), nitric oxide (NO), nitrogen dioxide (NO2) and nitrate (NO3) through various processes. Hence enhancing N use efficiency through improved N management is of greater importance for ensuring food security and environmental sustainability. The decisions on optimum leve

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Panda, D., AK Nayak, and S. Mohanty. "Nitrogen management in rice." Oryza-An International Journal on Rice 56, Special (2019): 125–35. http://dx.doi.org/10.35709/ory.2019.56.spl.5.

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Nitrogen is the one of most limiting nutrient for rice production, and in India rice cultivation alone accounts approximately 37% of the total fertilizer-N consumption in the year 1917-18. However, 60-70% of applied N is lost from the rice ecosystem system in the form of reactive N species such as ammonia (NH3), nitrous oxide (N2O), nitric oxide (NO), nitrogen dioxide (NO2) and nitrate (NO3) through various processes. Hence enhancing N use efficiency through improved N management is of greater importance for ensuring food security and environmental sustainability. The decisions on optimum leve

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Dubey, Ramji, Pragya Verma, and Sudhir Kumar. "Cr (III) genotoxicity and oxidative stress: An occupational health risk for leather tannery workers of South Asian developing countries." Toxicology and Industrial Health 38, no. 2 (2022): 112–26. http://dx.doi.org/10.1177/07482337211055131.

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In the leather industry, Cr (III) is used as a basic tanning agent. The wastewater discharged from the tannery industry contains a high concentration of chromium. Recent studies indicate the genotoxic effects especially DNA damage and oxidative stress of Cr (III) in tannery workers. Cr (III) interacts with DNA to form DNA cross-links and DNA strand breaks. It also modifies the oxidative DNA base through the Haber–Weiss reaction. The present study is based on an overview of scientific literature and previous observations regarding the effects of tannery chromium effluents on exposed workers and

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Kozáková, Jana, and Erika Hornáčková. "Product line of selected agricultural entity in Slovakia and suggestion for its expansion based on analysis of consumers' interest in dairy and meat products." Potravinarstvo Slovak Journal of Food Sciences 15 (September 27, 2021): 939–60. http://dx.doi.org/10.5219/1654.

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Studies on primary agricultural production in Slovakia aimed mainly at biological, economic, or market point of view and there is a lack of managerial approach providing a specific recommendation for farmers according to their production lines or planning process. As a reaction, we are providing a practically oriented study based on the selected livestock producer, which is aimed at statistical significances as an establishment for further recommendations for management and marketing of this entity. The paper aims to analyze the views and preferences of customers of the monitored company, whic

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Pimentel, Ricky, Cortney Armitano-Lago, Ryan MacPherson, et al. "Effect of sensor number and location on accelerometry-based vertical ground reaction force estimation during walking." PLOS Digital Health 3, no. 5 (2024): e0000343. http://dx.doi.org/10.1371/journal.pdig.0000343.

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Knee osteoarthritis is a major cause of global disability and is a major cost for the healthcare system. Lower extremity loading is a determinant of knee osteoarthritis onset and progression; however, technology that assists rehabilitative clinicians in optimizing key metrics of lower extremity loading is significantly limited. The peak vertical component of the ground reaction force (vGRF) in the first 50% of stance is highly associated with biological and patient-reported outcomes linked to knee osteoarthritis symptoms. Monitoring and maintaining typical vGRF profiles may support healthy gai

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Fu, Yun-Xing, Hui Wang, Ting Hu, Fei-Miao Wang, and Rong Hu. "Factors affecting the accuracy and reliability of the measurement of anti-Müllerian hormone concentration in the clinic." Journal of International Medical Research 49, no. 5 (2021): 030006052110161. http://dx.doi.org/10.1177/03000605211016161.

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Objective We aimed to identify the factors that influence serum anti-Müllerian hormone (AMH) concentration measurements. Methods We collected serum samples between May and September 2018 and compared the effect on AMH concentration measured by ELISA of conditions including venepuncture, storage time, storage temperature, locations of the reaction microplate, and the use of the oral contraceptive pill and gonadotrophin-releasing hormone (GnRH). Results AMH concentration was not affected by food intake but was affected by haemolysis. It was also much higher in samples on the edge of the ELISA mi

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Rathke, Christian Lang, Victor Costa de Andrade Pimentel, Pablo Javier Alsina, Caroline Cunha do Espírito Santo, and André Felipe Oliveira de Azevedo Dantas. "IoT-Based Wireless System for Gait Kinetics Monitoring in Multi-Device Therapeutic Interventions." Sensors 24, no. 17 (2024): 5799. http://dx.doi.org/10.3390/s24175799.

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This study presents an IoT-based gait analysis system employing insole pressure sensors to assess gait kinetics. The system integrates piezoresistive sensors within a left foot insole, with data acquisition managed using an ESP32 board that communicates via Wi-Fi through an MQTT IoT framework. In this initial protocol study, we conducted a comparative analysis using the Zeno system, supported by PKMAS as the gold standard, to explore the correlation and agreement of data obtained from the insole system. Four volunteers (two males and two females, aged 24–28, without gait disorders) participate

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van der Kruk, Eline, and Thomas Geijtenbeek. "A planar neuromuscular controller to simulate compensation strategies in the sit-to-walk movement." PLOS ONE 19, no. 6 (2024): e0305328. http://dx.doi.org/10.1371/journal.pone.0305328.

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Standing up from a chair is a key daily life activity that is sensitive to functional limitations as we age and associated with falls, frailty, and institutional living. Predictive neuromusculoskeletal models can potentially shed light on the interconnectivity and interdependency of age-related changes in neuromuscular capacity, reinforcement schemes, sensory integration, and adaptation strategies during stand-up. Most stand-up movements transfer directly into walking (sit-to-walk). The aim of this study was to develop and validate a neuromusculoskeletal model with reflex-based muscle control

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Muzaffar, Shahzad, and Ibrahim (Abe) M. Elfadel. "Shoe-Integrated, Force Sensor Design for Continuous Body Weight Monitoring." Sensors 20, no. 12 (2020): 3339. http://dx.doi.org/10.3390/s20123339.

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Traditional pedobarography methods use direct force sensor placement in the shoe insole to record pressure patterns. One problem with such methods is that they tap only a few points on the flat sole under the foot and, therefore, do not account for the total ground reaction force. As a result, body weight tends to be under-estimated. This disadvantage has made it more difficult for pedobarography to be used to monitor many diseases, especially when their symptoms include body weight changes. In this paper, the problem of pedobarographic body weight measurement is addressed using a novel ergono

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Gutierrez, Pedro R., and Manuel Herrera Lara. "Giannini Prosthesis for Flatfoot." Foot & Ankle International 26, no. 11 (2005): 918–26. http://dx.doi.org/10.1177/107110070502601104.

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Background: To determine the clinical and radiographic results of arthroereisis using the Giannini endo-orthotic implant for the treatment of pediatric flatfoot deformity, we retrospectively evaluated 37 patients (65 feet). Methods: Twenty-two boys and 15 girls were followed for an average of 26.5 months. Their overall average age was 9.4 (range 5 to 14) years. Pain, function, participation in sports activity, and the changes in radiographic measurements taken at 3,6, and 12 months and then at 1-year intervals were evaluated. Results: Pain or discomfort decreased from 60% (22 patients) preoper

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Matjačić, Zlatko, Matjaž Zadravec, and Andrej Olenšek. "Influence of Treadmill Speed and Perturbation Intensity on Selection of Balancing Strategies during Slow Walking Perturbed in the Frontal Plane." Applied Bionics and Biomechanics 2019 (June 2, 2019): 1–14. http://dx.doi.org/10.1155/2019/1046459.

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Background. Common understanding is that adequate foot placement (stepping strategy) is crucial in maintaining stability during walking at normal speed. The aim of this study was to investigate strategies that humans use to cope with lateral perturbations during very slow walking. Methods. Ten healthy individuals underwent an experimental protocol whereby a set of perturbations directed inward (medially to a stance leg) and outward (laterally to a stance leg) of three intensities (F1=5%, F2=10%, and F3=15% of body weight), applied at three instances of a stance phase, were delivered in random

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Weber, E. Scott, Thomas B. Waltzek, Devon A. Young, et al. "Systemic Iridovirus Infection in the Banggai Cardinalfish (Pterapogon Kauderni Koumans 1933)." Journal of Veterinary Diagnostic Investigation 21, no. 3 (2009): 306–20. http://dx.doi.org/10.1177/104063870902100302.

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Iridoviruses infect food and ornamental fish species from a wide range of freshwater to marine habitats across the globe. The objective of the current study was to characterize an iridovirus causing systemic infection of wild-caught Pterapogon kauderni Koumans 1933 (Banggai cardinalfish). Freshly frozen and fixed specimens were processed for histopathologic evaluation, transmission electron microscopic examination, virus culture, molecular virologic testing, microbiology, and in situ hybridization (ISH) using riboprobes. Basophilic granular cytoplasmic inclusions were identified in cytomegalic

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Chernyavskii, S. "Russian Swiss Relations: A Sanction Trap." World Economy and International Relations 66, no. 12 (2022): 80–88. http://dx.doi.org/10.20542/0131-2227-2022-66-12-80-88.

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The article analyzes the state of Russian-Swiss business cooperation in the new world realities that have developed since February 2022. The author notes that a feature of Russian business in Switzerland is the trade in commodities (petroleum products, gold and platinum, rare earth metals and fertilizers). An important role is played by the placement of personal capital of super-rich Russian businessmen who use Switzerland for their safe storage. The Russian special military operation in Ukraine provoked a harsh reaction from the Swiss authorities. On February 28, 2022, the Federal Council joi

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