Article
Chemistry, Analytical
Natacha Oliveira, Filipe Carvalho, Jorge Lains, Deolinda Rasteiro, Luis Roseiro
Summary: The sit-to-stand movement is crucial for daily activities and motor rehabilitation. A new biomechanical support device has been developed to measure upper limb force during the STS movement, aiming to motivate and encourage physical therapy for lower limb patients. This device allows real-time visualization and data recording, revealing asymmetries in applied forces and correlations with respiratory function.
Article
Psychology, Multidisciplinary
Prithvi Kantan, Erika G. Spaich, Sofia Dahl
Summary: Interactive sonification of biomechanical quantities is gaining relevance in movement rehabilitation and monitoring. This study proposes a general sonification model for the sit-to-stand (STS) transfer, incorporating both fixed and flexible components to represent the rising motion and clinical features of STS. The model was evaluated with a listening test experiment, showing that participants were able to accurately classify different STS patterns and that the amount of sonified kinematic information significantly impacted accuracy.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Multidisciplinary Sciences
Maitreyee Wairagkar, Emma Villeneuve, Rachel King, Balazs Janko, Malcolm Burnett, Veena Agarwal, Dorit Kunkel, Ann Ashburn, R. Simon Sherratt, William Holderbaum, William S. Harwin
Summary: Sit-to-stand transitions are important for daily activities and can affect older adults and people with motor impairments. This study proposes a body model using two wearable sensors to estimate sit-to-stand kinematics, and achieved high accuracy in classification of transitions among different groups.
Article
Robotics
Weiguang Huo, Huiseok Moon, Mohamed Amine Alouane, Vincent Bonnet, Jian Huang, Yacine Amirat, Ravi Vaidyanathan, Samer Mohammed
Summary: This article proposes a novel impedance modulation strategy for a lower-limb exoskeleton to provide appropriate power and balance assistance during STS movements, while enhancing the wearer's balance control ability. By designing a human joint torque observer and a time-varying desired impedance model, along with a virtual environmental force for balance reinforcement control, the effectiveness of the proposed method is evaluated through experiments with healthy subjects.
IEEE TRANSACTIONS ON ROBOTICS
(2022)
Article
Engineering, Electrical & Electronic
Kenshi Saho, Keitaro Shioiri, Keisuke Inuzuka
Summary: This study combines micro-Doppler radar data from different movements to achieve high accuracy in identifying 10 individuals using a convolutional neural network, outperforming traditional methods. Despite the relatively small training set, the method shows promising accuracy in identifying participants with similar ages and physical features.
IEEE SENSORS JOURNAL
(2021)
Article
Multidisciplinary Sciences
Michael Herzog, Frieder C. Krafft, Bernd J. Stetter, Andrea d'Avella, Lizeth H. Sloot, Thorsten Stein
Summary: This study investigated the effects of rollator support on sit-to-stand and stand-to-sit movements and found that individuals adjust their movement strategies based on different conditions. The findings can be applied to older individuals to recommend safe strategies and reduce the risk of falls.
SCIENTIFIC REPORTS
(2023)
Article
Veterinary Sciences
Kazuyuki Yoshikawa, Takio Kitazawa, Tadashi Sano, Takumi Ino, Tomoya Miyasaka
Summary: Sit-to-stand and stand-to-sit motions are commonly used as therapeutic exercises for dogs with functional impairments. This study characterized the kinematic characteristics of these motions in dogs and compared them with walking. The results showed that the sit-to-stand motion differed from walking, but it was not possible to classify the motions into multiple phases based solely on the transition of hindlimb range of motion.
RESEARCH IN VETERINARY SCIENCE
(2023)
Article
Chemistry, Analytical
Frederic Marin, Elke Warmerdam, Zoe Marin, Khalil Ben Mansour, Walter Maetzler, Clint Hansen
Summary: This study used wearable sensors to monitor sit-to-stand performance in Parkinson's patients, showing high specificity and sensitivity in unsupervised classification. It also revealed a wide spectrum of mobility variations in Parkinson's patients and the impact of medication status on performance.
Article
Clinical Neurology
Elizabeth Ann Chandler, Thomas Stone, Valerie Moyra Pomeroy, Allan Brian Clark, Andrew Kerr, Phillip Rowe, Ukadike Chris Ugbolue, Jessica Smith, Nicola Joanne Hancock
Summary: This study aimed to identify the biomechanical characteristics of sit-to-stand (STS) and sit-to-walk (STW) in people early after stroke, and determine any differences in movement fluidity and duration, as well as their correlations with commonly used measures of walking speed and step length ratio. The results showed that participants spent significantly more time in the initial movement phase during STS than during STW, with STS being completed more smoothly but with more hesitation and greater coordination. No strong relationships were found between movement fluidity or duration with walking speed or step length symmetry.
FRONTIERS IN NEUROLOGY
(2021)
Article
Multidisciplinary Sciences
Sarah A. Roelker, Laura C. Schmitt, Ajit M. W. Chaudhari, Robert A. Siston
Summary: This study developed an efficient method to determine how changes in lower extremity joint kinematics affect individual muscles' potential contribution to whole-body accelerations. The method was compared to traditional dynamic simulation methods and showed consistent results. The findings can help evaluate joint motion adjustments' impact on muscle contribution to movement and identify potential sources for pathologic movement and rehabilitation strategies.
Article
Neurosciences
Pieter Severijns, Thomas Overbergh, Kaat Desloovere, Lieven Moke, Lennart Scheys
Summary: Research interest in the impact of adult spinal deformity (ASD) on spinopelvic and whole body motion has increased. Patients with ASD use aberrant spinopelvic strategies during sit-to-stand (STSt) and stand-to-sit (StTS) compared to healthy controls, with significant correlations between dynamic and radiographic parameters. Possible mechanisms for these differences include impaired neuromuscular control or muscle weakness.
Article
Engineering, Industrial
Anurag Purwar, Krissh Bhargava, Edward Behan
Summary: This paper presents a multi-functional Sit-to-Stand (STS) assistive device designed to improve the mobility of individuals with lower extremity weaknesses. The device, originally designed for a person with post-polio syndrome, has found utility among overweight and elderly individuals, as well as physical therapists. The paper introduces a novel 6-bar Sit-to-Stand (STS) linkage mechanism integrated into the device, which follows the motion trajectory of the hip joint and provides a comfortable orientation of the supporting bar. The device serves as both a functional assistive device for individuals with disabilities and an ambulation therapy aid for physical therapists and care providers.
INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS
(2023)
Article
Chemistry, Analytical
Haruki Toda, Kiyohiro Omori, Katsuya Fukui, Takaaki Chin
Summary: A simple measurement method using embedded laser range finders in chairs was developed to evaluate physical functions in frail older adults. Its performance was compared with an optical motion capture system and found to be reliable in measuring sit-to-stand motion.
Article
Robotics
Tatiana D. Luna, Victor Santamaria, Xupeng Ai, Sunil K. Agrawal
Summary: This study aims to understand how healthy adults react to physical perturbations when transitioning from sitting to standing. The results show that the direction of perturbations had the most distinguishable change among participants, and as the perturbation intensities increased, participants required an increase in trunk movement to maintain balance. These findings provide important insights for designing future sit-to-stand perturbation-based training programs for individuals prone to falling.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2022)
Article
Public, Environmental & Occupational Health
Jackie D. Zehr, Mamiko Noguchi, Donna J. Fok, Jack P. Callaghan
Summary: This study aimed to investigate the mechanical work and energy required for transitions from sitting to standing and from standing to sitting on both traditional office chairs and dynamic chairs designed for sit-stand workstations. The results showed that transitions performed from the dynamic chair reduced the work and energy of the whole-body center of mass, while the work and energy of the thigh center of mass differed within transitions but were similar between chairs.
WORK-A JOURNAL OF PREVENTION ASSESSMENT & REHABILITATION
(2023)