As missions in space increase in duration and distance from Earth it is critical to understand the impact that exposure to microgravity has on the health and potential performance of crews. Segmental bioimpedance measurements can track resistances changes in tissues that result from fluid redistribution and could be a tool for continuous fluid shift monitoring in microgravity. In this work, the range of segmental (legs, arms, torso, and neck) 10 kHz and 100 kHz resistances and their relative changes during 4 hours of 6° head down tilt are reported as well as the observed resistance differences between left/right body segments throughout the protocol.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1109/EMBC46164.2021.9630851 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fluid Distribution: Response to Intermittent Pneumatic Compression in People With and Without Primary Lymphedema.
Lymphat Res Biol
January 2025
Caring Futures Institute, College of Nursing and Health Sciences, Flinders University, Bedford Park, Australia.
Current understanding of changes in fluid distribution in response to the application of compression in primary lymphedema (PLE) is limited. This study measured fluid distribution before and after one application of standardized intermittent pneumatic compression (IPC) in the lower limbs of people with PLE, compared with those without lymphedema. High-frequency ultrasound (HFU) was used to measure dermal fluid, bioimpedance to measure segmental fluid, and percent water content (PWC) to measure fluid at specific anatomical points.
View Article and Find Full Text PDFarterioscope.sim: Enabling Simulations of Blood Flow and Its Impact on Bioimpedance Signals.
Bioengineering (Basel)
December 2024
Institute of Strength of Materials, Graz University of Technology, 8010 Graz, Austria.
Objectives: Early detection of cardiovascular diseases and their pre-existing conditions, arteriosclerosis and atherosclerosis, is crucial to increasing a patient's chance of survival. While imaging technologies and invasive procedures provide a reliable diagnosis, they carry high costs and risks for patients. This study aims to explore impedance plethysmography (IPG) as a non-invasive and affordable alternative for diagnosis.
View Article and Find Full Text PDFElectromyography- and Bioimpedance-Based Detection of Swallow Onset for the Control of Dysphagia Treatment.
Sensors (Basel)
October 2024
Control Systems Group, Technische Universität Berlin, Einsteinufer 17, 10587 Berlin, Germany.
Several studies support the benefits of biofeedback and Functional Electrical Stimulation (FES) in dysphagia therapy. Most commonly, adhesive electrodes are placed on the submental region of the neck to conduct Electromyography (EMG) measurements for controlling gamified biofeedback and functional electrical stimulation. Due to the diverse origin of EMG activity at the neck, it can be assumed that EMG measurements alone do not accurately reflect the onset of the pharyngeal swallowing phase (onset of swallowing).
View Article and Find Full Text PDFAssociation between appendicular skeletal muscle mass and myocardial glucose uptake measured by F-FDG PET.
ESC Heart Fail
September 2024
Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
Background: Low muscle mass is associated with high insulin resistance and an increased risk of cardiovascular disease. This study aims to determine whether low muscle mass affects the alterations in myocardial substrate metabolism that are associated with the development of cardiovascular disease.
Method: The study included 299 individuals (182 men and 117 women) who underwent examination at the Severance Health Check-up Center between January 2018 and February 2019.
Simplified single neuron model for robust local pulse wave velocity sensing using a tetherless bioimpedance device.
Biosens Bioelectron
January 2025
Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA; Center for Remote Health Technologies and Systems, Texas A&M Engineering Experiment Station, College Station, TX, 77843, USA; Department of Electrical Engineering, Texas A&M University, College Station, TX, 77843, USA.
Pulse arrival time (PAT), Pulse transit time (PTT), and Pulse Wave Velocity (PWV) have all been used as metrics for assessing a number of cardiovascular applications, including arterial stiffness and cuffless blood pressure monitoring. These have been measured using various sensing methods, including electrocardiogram (ECG) with photoplethysmogram (PPG), two PPG sensors, or two Bioimpedance (BioZ) sensors. Our study addresses the mathematical inaccuracies of previous bioimpedance approaches and incorporates PTT weights for the peak-peak (PTTpp), middle-middle (PTTmm), and foot-foot (PTTff) segments of the sensing signal into a single neuron model to determine a more accurate and stable PWV.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!