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http://dx.doi.org/10.1097/RLU.0000000000004741 | DOI Listing |
Neurobiol Aging
December 2024
Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Shirley Ryan AbilityLab, Chicago, IL, USA.
A decline in upper limb strength is common with normal aging. However, whether age-related strength decline is paralleled by reduced excitability of descending motor pathways is unclear. The reticulospinal tract is a key subcortical pathway involved in gross motor output and exhibits increased excitability following resistance training.
View Article and Find Full Text PDFJ Orthop Surg Res
December 2024
Department of Orthopaedic Surgery, Henry Ford Hospital, Henry Ford Health, 2799 W. Grand Blvd CFP-6, Detroit, MI, 48202, USA.
Background: Socioeconomic status has been recognized as a crucial social determinant of health influencing patient outcomes. Area Deprivation Index (ADI) is a validated measure of an area's socioeconomic status. Limited data exists on the impact of ADI and clinical outcomes and complications following rotator cuff repair (RCR).
View Article and Find Full Text PDFBMC Musculoskelet Disord
December 2024
Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, People's Republic of China.
Background: While it is well-stablished that scoliosis can lead to neuromuscular control disorders, the specific characteristics of these impairments remain unclear. This study aimed to explore the neuromuscular features of scapula stabilizers in adolescents with idiopathic scoliosis (AIS) through an analysis of anticipatory muscle activations (AMAs).
Methods: A cross-sectional observational study was conducted with 17 AIS and 19 age-matched healthy subjects.
Proc IEEE RAS EMBS Int Conf Biomed Robot Biomechatron
September 2024
Department of Mechanical Engineering, Columbia University, New York, NY 10027, USA.
Increased effort during use of the paretic arm and hand can provoke involuntary abnormal synergy patterns and amplify stiffness effects of muscle tone for individuals after stroke, which can add difficulty for user-controlled devices to assist hand movement during functional tasks. We study how volitional effort, exerted in an attempt to open or close the hand, affects resistance to robot-assisted movement at the finger level. We perform experiments with three chronic stroke survivors to measure changes in stiffness when the user is actively exerting effort to activate ipsilateral EMG-controlled robot-assisted hand movements, compared with when the fingers are passively stretched, as well as overall effects from sustained active engagement and use.
View Article and Find Full Text PDFMov Disord Clin Pract
December 2024
Department of Human Neuroscience, Sapienza University of Rome, Rome, Italy.
Background: In Parkinson's Disease (PD), upper limb tremor during walking (TW) is observed and clinical observations suggest it may represent a variant of rest tremor. However, its neurophysiological characteristics remain unexplored.
Objectives: This study compared the neurophysiological features of TW with other PD tremors and tested whether TW arises from reduced ipsilateral arm swing.
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