Review
Chemistry, Analytical
Zoe Taylor, Gregory S. Walsh, Hannah Hawkins, Mario Inacio, Patrick Esser
Summary: This systematic review examines the perturbation methods and outcome variables used to assess participant biomechanical responses during walking. The study finds that treadmill translation is the most frequently used balance perturbation method, and the most commonly collected outcome variables are step width and step length. The wide variety of laboratory perturbation methods and the significant impact of perturbation type on study outcomes are highlighted.
Article
Materials Science, Multidisciplinary
Lishan Li, Jing Lyu, Qingqing Cheng, Chen Fu, Xuetong Zhang
Summary: Recyclable aerogels with high reprocessing consistency are fabricated using a destabilizing dynamic balance (DDB) strategy, in which Kevlar nanofibers (KNFs) are utilized as synthetic polymer building blocks. The DDB strategy triggers a reversible sol-gel transition through the deprotonation-protonation reaction of the fibers, and the gelation time can be adjusted to suit various processing methods. The resulting KNF aerogels exhibit low density, high compressive modulus, high specific surface area, and low thermal conductivity.
ADVANCED FIBER MATERIALS
(2023)
Article
Engineering, Marine
Said Alhaddad, Dave Weij, Cees van Rhee, Geert Keetels
Summary: Due to soil matrix dilation, dense submarine sand slopes can be temporarily steeper than the natural angle of repose. The failure mode of these slopes is determined by the detachment of individual grains and collapses of small coherent sand wedges. This research investigates the validity of an existing criterion for predicting the failure mode and concludes that the method has limited forecasting power, with a mean absolute percentage error of 92%. More advanced methodologies are needed to understand the complex geotechnical and hydraulic processes involved.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Analytical
Se Hoon Kim, Seo Jung Yun, Quoc Khanh Dang, Youngjoon Chee, Sun Gun Chung, Byung-Mo Oh, Keewon Kim, Han Gil Seo
Summary: The study found that wearable sensors can be used to quantitatively measure stooped posture during gait in patients with Parkinson's disease, and sensory feedback through vibration may help correct posture in selected patients during walking.
Article
Neurosciences
Patrick G. Monaghan, Sarah A. Brinkerhoff, Jaimie A. Roper
Summary: The study found that physical activity status did not affect frontal plane dynamic balance in healthy young adults. Conditions that constrain step width, such as tandem and beam walking, are adequate for challenging frontal plane dynamic balance, indicating possible adjustments in trunk kinematics when step width is constrained.
Article
Mathematics
Jingjing You, Abdujelil Abdurahman, Hayrengul Sadik
Summary: This article mainly investigates the fixed-time and predefined-time synchronization problem for a type of complex-valued BAM neural networks with stochastic perturbations and impulse effect. Novel stability results for nonlinear impulsive systems are extended to handle both stabilizing and destabilizing impulses simultaneously. A new predefined-time stability lemma is obtained for stochastic nonlinear systems with a general impulsive effect. Using these results, two controllers are implemented to derive simple synchronization criteria for the considered neural networks with stochastic perturbations using the non-separation method. Numerical examples are provided to demonstrate the feasibility of the obtained results.
Article
Rehabilitation
Ryo ONUMA, Tadashi MASUDA, Fumihiko HOSHI, Tadamitsu MATSUDA, Tomoko SAKAI, Atsushi OKAWA, Tetsuya JINNO
Summary: This study aimed to investigate reduced anticipatory postural adjustments during gait initiation in post-stroke hemiplegic patients through measuring the center of pressure. The results showed that the latency and magnitude of center of pressure displacement peak for the paretic leg were significantly different compared to controls, and correlated with clinical measures of motor dysfunction and postural balance.
JOURNAL OF REHABILITATION MEDICINE
(2021)
Article
Clinical Neurology
Jia Hu, Lingjing Jin, Yubing Wang, Xia Shen
Summary: This study investigated the feasibility and effectiveness of challenging treadmill speed-dependent gait and perturbation-induced balance training in chronic stroke patients with low ambulation ability. The experimental group showed significant improvements in gait velocity and dynamic balance ability after 2 and 4 weeks of training, while the control group did not show significant improvements. The results suggest that this type of training is effective in improving ambulation function in chronic stroke patients with low ambulation ability.
FRONTIERS IN NEUROLOGY
(2023)
Article
Chemistry, Multidisciplinary
Wen L. Chen, Robert C. Grabowski, Saurav Goel
Summary: Using molecular dynamics simulation, this study successfully simulated the free 1W-2W transition during clay hydration for the first time and identified the underlying mechanism as the detachment of cations from the clay surface and the formation of a shell of water molecules around the cation. The swelling dynamics of clay was found to be influenced by factors such as clay charge, clay mineralogy, and counterions, highlighting complex cation-clay interactions and cation hydration capacity.
Article
Biophysics
Lydia G. Brough, Glenn K. Klute, Richard R. Neptune
Summary: This study investigates the biomechanical responses of individuals without mobility impairments to medial and lateral foot-placement perturbations during walking, aiming to assess their impact on dynamic balance.
JOURNAL OF BIOMECHANICS
(2021)
Article
Biophysics
Lindsey K. Molina, Gabriella H. Small, Richard R. Neptune
Summary: Individuals with neuromuscular deficits often walk with wider step widths, which is associated with decreased balance control. This study found that wider steps are linked to reduced balance control during steady-state walking, but do not affect the balance response strategies following mediolateral surface perturbations in healthy adults.
JOURNAL OF BIOMECHANICS
(2023)
Article
Multidisciplinary Sciences
Tatsuya Igawa, Ken Ishii, Akifumi Suzuki, Hideto Ui, Ryunosuke Urata, Norihiro Isogai, Yutaka Sasao, Makoto Nishiyama, Haruki Funao
Summary: In patients with dropped head syndrome (DHS), biomechanical analysis reveals shorter stride length, smaller peak hip-joint extension angle, and backward thorax tilt during level walking compared to healthy elderly. Additionally, DHS patients exhibit smaller peak ankle-joint plantar-flexion moment despite larger dorsiflexion angle. These kinematic and kinetic differences reflect the unique gait characteristics of DHS patients, including lower limb joint movements and thorax-pelvis alignment.
SCIENTIFIC REPORTS
(2021)
Article
Cell Biology
Ke-Ke Chen, Zhao-Hui Jin, Lei Gao, Lin Qi, Qiao-Xia Zhen, Cui Liu, Ping Wang, Yong-Hong Liu, Rui-Dan Wang, Yan-Jun Liu, Jin-Ping Fang, Yuan Su, Xiao-Yan Yan, Ai-Xian Liu, Bo-Yan Fang
Summary: Parkinson's disease can be classified into three motor-based subtypes: postural instability/gait difficulty (PIGD), tremor dominant (TD), and indeterminate. Patients who received 2 weeks of multidisciplinary intensive rehabilitation treatment (MIRT) showed significant improvements in symptoms, with the PIGD group showing greater improvement. Symptom improvement was maintained for 1-3 months after discharge in all three groups.
NEURAL REGENERATION RESEARCH
(2021)
Article
Neurosciences
Rania Almajid, Carole Tucker, Emily Keshner, Erin Vasudevan, William Geoffrey Wright
Summary: This study investigated the impact of wearing HMD on kinematic measures in younger and older adults, finding that wearing HMD decreased turning cadence and trunk velocities, and increased the time to complete tasks, especially in older adults. This suggests that the effects of HMD on physical performance should be considered in VR rehabilitation applications.
Article
Engineering, Biomedical
Mohamed Suhair Bin Mohamed Suhaimy, Stephen R. Lord, Phu D. Hoang, Alex Nieto, Daina L. Sturnieks, Yoshiro Okubo
Summary: The study revealed that individuals with multiple sclerosis are more prone to falls following trips and slips, showing significant differences in approach and recovery strategies during walking. This indicates that multiple sclerosis affects reactive balance responses.
CLINICAL BIOMECHANICS
(2021)
Article
Urology & Nephrology
Marie-Helene Paquin, Cyril Duclos, Nolween Lapierre, Lucie Dubreucq, Melanie Morin, Jean Meunier, Jacqueline Rousseau, Chantal Dumoulin
NEUROUROLOGY AND URODYNAMICS
(2020)
Article
Clinical Neurology
Manuel J. Escalona, Daniel Bourbonnais, Damien Le Flem, Michel Goyette, Cyril Duclos, Dany H. Gagnon
NEUROPHYSIOLOGIE CLINIQUE-CLINICAL NEUROPHYSIOLOGY
(2020)
Article
Engineering, Biomedical
Vahid Esmaeili, Andreanne Juneau, Joseph-Omer Dyer, Anouk Lamontagne, Dahlia Kairy, Laurent Bouyer, Cyril Duclos
JOURNAL OF NEUROENGINEERING AND REHABILITATION
(2020)
Article
Neurosciences
Manuel J. Escalona, Daniel Bourbonnais, Michel Goyette, Damien Le Flem, Cyril Duclos, Dany H. Gagnon
Summary: Increasing walking speed tends to merge muscle synergies associated with weight acceptance and limb deceleration, while decreasing speed does not change the number and composition of muscle synergies. Varying gait speed, particularly decreasing speed, may require additional attention as a gait training strategy due to its effects on muscle synergies.
Article
Neurosciences
Alexandre Tapin, Noemie C. Duclos, Karim Jamal, Cyril Duclos
Summary: The study aimed to quantify the perception of gait motion in healthy individuals while applying multiple vibrations to the lower limbs. Results showed that most participants were able to perceive gait motion under certain conditions, but there was great variability in perception across different conditions. Stimulation of the knees appeared to positively influence the perception of gait motion.
EXPERIMENTAL BRAIN RESEARCH
(2021)
Article
Health Care Sciences & Services
Sylvie Bernaerts, Nele A. J. De Witte, Vicky Van der Auwera, Bert Bonroy, Luiza Muraru, Panagiotis Bamidis, Christos Frantzidis, Chrysoula Kourtidou-Papadeli, Nancy Azevedo, Jokin Garatea, Idoia Munoz, Rosa Almeida, Raquel Losada, Joyce Fung, Eva Kehayia, Anouk Lamontagne, Elaine de Guise, Cyril Duclos, Johanne Higgins, Sylvie Nadeau, Lucie Beaudry, Evdokimos Konstantinidis
Summary: This study aims to harmonize health and well-being living lab procedures and infrastructures in Europe and beyond, particularly in the context of rehabilitation, as well as investigate the potential of innovative technologies for rehabilitation through living lab methodologies.
JMIR RESEARCH PROTOCOLS
(2022)
Review
Clinical Neurology
Karim Jamal, Adrien Penisson, Stephan Rostagno, Cyril Duclos
Summary: Proprioception is often impaired in poststroke individuals, but there is limited consensus on the best tools for assessing it. This study evaluated the psychometric properties of different tests used to assess proprioception in poststroke individuals and found that the quality of existing tests is low. Technological devices, such as robotic orthoses or muscle vibration, may provide the best potential for assessing the different subcomponents of proprioception. Further research is needed to develop and investigate these approaches.
JOURNAL OF NEUROLOGIC PHYSICAL THERAPY
(2022)
Proceedings Paper
Computer Science, Artificial Intelligence
Iris Willaert, Rachid Aissaoui, Sylvie Nadeau, Cyril Duclos, David R. Labbe
Summary: This study aimed to assess the perception threshold between a subject's actual gait movements and those of their modulated self-avatar during treadmill walking. Preliminary results on two subjects suggest that healthy subjects can detect the mismatch, but differences may exist between subjects.
2022 IEEE CONFERENCE ON VIRTUAL REALITY AND 3D USER INTERFACES ABSTRACTS AND WORKSHOPS (VRW 2022)
(2022)
Meeting Abstract
Health Care Sciences & Services
Diana Zidarov, Catherine Robert, Cyril Duclos, Sara Ahmed
QUALITY OF LIFE RESEARCH
(2020)
Article
Health Care Sciences & Services
Alec Bass, Mylene Aubertin-Leheudre, Claude Vincent, Antony D. Karelis, Suzanne N. Morin, Michelle McKerral, Cyril Duclos, Dany H. Gagnon
JMIR RESEARCH PROTOCOLS
(2020)
Proceedings Paper
Computer Science, Artificial Intelligence
Iris Willaert, Rachid Aissaoui, Sylvie Nadeau, Cyril Duclos, David R. Labbe
2020 IEEE CONFERENCE ON VIRTUAL REALITY AND 3D USER INTERFACES WORKSHOPS (VRW 2020)
(2020)
Proceedings Paper
Computer Science, Artificial Intelligence
Kean Kouakoua, Cyril Duclos, Rachid Aissaoui, Sylvie Nadeau, David R. Labbe
2020 IEEE CONFERENCE ON VIRTUAL REALITY AND 3D USER INTERFACES WORKSHOPS (VRW 2020)
(2020)
Meeting Abstract
Clinical Neurology
E. Sanchez, C. Duclos, S. Van Der Maren, H. El-Khatib, C. Arbour, A. Baril, H. Blais, J. Carrier, N. Gosselin
Article
Clinical Neurology
Manuel J. Escalona, Daniel Bourbonnais, Michel Goyette, Cyril Duclos, Dany H. Gagnon
SPINAL CORD SERIES AND CASES
(2020)
Article
Multidisciplinary Sciences
Francois Routhier, Noemie C. Duclos, Emilie Lacroix, Josiane Lettre, Elizabeth Turcotte, Nathalie Hamel, Francois Michaud, Cyril Duclos, Philippe S. Archambault, Laurent J. Bouyer
Article
Biophysics
Nathan D. Camarillo, Rafael Jimenez-Silva, Frances T. Sheehan
Summary: This article discusses the statistical dependence between multiple measurements from the same participant and provides recommendations for using these measurements when they are not independent.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
J. Huet, A. -S. Boureau, A. Sarcher, C. Cornu, A. Nordez
Summary: Standard compression in freehand 3D ultrasound induces a bias in volume calculations, but minimal compression and gel pad methods have similar results. With a trained examiner and precautions, the bias can be minimized and become acceptable in clinical applications.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
C. Lariviere, A. H. Eskandari, H. Mecheri, F. Ghezelbash, D. Gagnon, A. Shirazi-Adl
Summary: Recent developments in musculoskeletal modeling have focused on model customization. Personalization of the spine profile may affect estimates of spinal loading and stability. This study investigates the biomechanical consequences of changes in the spinal profile and finds that personalizing the spine profile has medium to large effects on trunk muscle forces and negligible to small effects on spinal loading and stability.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Luke T. Mattar, Arash B. Mahboobin, Adam J. Popchak, William J. Anderst, Volker Musahl, James J. Irrgang, Richard E. Debski
Summary: Exercise therapy fails in about 25.0% of cases for individuals with rotator cuff tears, and one reason for this failure may be the inability to strengthen and balance the muscle forces that keep the humeral head in the correct position. This study developed computational musculoskeletal models to compare the net muscle force before and after exercise therapy between successfully and unsuccessfully treated patients. The study found that unsuccessfully treated patients had less inferiorly oriented net muscle forces, which may increase the risk of impingement.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Natsuki Sado, Takeshi Edagawa, Toshihide Fujimori, Shogo Hashimoto, Yoshikazu Okamoto, Takahito Nakajima
Summary: The existing methods for predicting hip and lumbosacral joint centres in Japanese adults are biased and differ between sexes. We propose new regression equations that consider soft-tissue thickness, sex differences, and a height-directional measure, and validate them using leave-one-out cross-validation.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Peimin Yu, Xuanzhen Cen, Qichang Mei, Alan Wang, Yaodong Gu, Justin Fernandez
Summary: This study aimed to explore the intra-foot biomechanical differences among individuals with chronic ankle instability (CAI), copers, and healthy individuals during dynamic tasks. The study found that copers and CAI individuals had smaller dorsiflexion angles and copers presented a more eversion position compared to healthy participants. Copers also had greater dorsiflexion angles in the metatarsophalangeal joint and more inversion moments in the subtalar joint during certain tasks. These findings can help in designing interventions to restore ankle joint functions in CAI individuals.
JOURNAL OF BIOMECHANICS
(2024)
Article
Biophysics
Jon Skovgaard Jensen, Anders Holsgaard-Larsen, Anders Stengaard Sorensen, Per Aagaard, Jens Bojsen-Moller
Summary: This study investigates the biomechanical effects of robot-assisted body weight unloading (BWU) on gait patterns in healthy young adults. The results show that dynamic robot-assisted BWU enables reduced kinetic requirements without distorting biomechanically normal gait patterns during overground walking.
JOURNAL OF BIOMECHANICS
(2024)