Results 71 to 80 of about 4,597 (239)

Beyond Deterministic Fetal Programming: Intrauterine Exposures and the Multifactorial Origins of Adiposity

Obesity Reviews, EarlyView.
ABSTRACT Excess adiposity is not a recently developed problem but has existed since at least the upper Paleolithic, allowing evolutionary selection pressures to adapt the physiology of the pregnant woman and the feto‐placental unit for maternal and fetal protection.
Gernot Desoye, Ursula Hiden, Evelyn Jantscher‐Krenn, Herbert Fluhr, Jonathan C. Wells, Sonja Entringer, Mireille N. M. van Poppel   +6 more
wiley   +1 more source

Impedance plethysmography; a physical analysis for quantitative blood flow studies [PDF]

, 1957
Plethysmography, or volume recording, plays an important part in the evaluation of circulation in human patients. There are several techniques used: indirect mechanical methods involving fluid displacement; indirect photoelectric methods involving ...
Millar, Huntly Drummond
core  

Effects of temperature on electrical impedance of biological tissues: ex-vivo measurements

Journal of Electrical Bioimpedance
Bioelectrical impedance techniques have been useful in various applications, including body composition analysis, impedance plethysmography, impedance cardiography, lung ventilation, perfusion, and tissue characterization.
Dipa Safia Aktar, Pramanik Muralee Monohara, Rabbani Mamun, Kadir Muhammad Abdul   +3 more
doaj   +1 more source

Time‐course analysis of cerebral circulation and cardiorespiratory responses to acute central blood volume reduction in healthy young males

Experimental Physiology, EarlyView.
Abstract Central blood volume (CBV) reduction challenges circulatory and respiratory homeostasis, particularly during the initial compensatory phase (0–2 min), when rapid physiological adaptations occur. In this study, we examined dynamic cardiorespiratory responses to CBV reduction using lower‐body negative pressure (LBNP) in 11 healthy young males ...
Marina Feeley, Tomoki Watada, Go Ito, Ai Shimada, Toru Sawai, Hideomi Nakata, Shingo Otsuki, Tadayoshi Miyamoto   +7 more
wiley   +1 more source

Low Frequency Forced Oscillation Lung Function Test Can Distinguish Dynamic Tissue Non-linearity in COPD Patients

Frontiers in Physiology, 2019
This paper introduces the use of low frequencies forced oscillation technique (FOT) in the presence of breathing signal. The hypothesis tested is to evaluate the sensitivity of FOT to various degrees of obstruction in COPD patients. The measurements were
Maria Ghita, Maria Ghita, Dana Copot, Dana Copot, Mihaela Ghita, Mihaela Ghita, Eric Derom, Clara Ionescu, Clara Ionescu, Clara Ionescu   +9 more
doaj   +1 more source

Blood flow restriction exercise during microgravity exposure in parabolic flight

Experimental Physiology, EarlyView.
Abstract This case report evaluates whether it is possible to perform blood flow restriction (BFR) exercise during exposure to microgravity. The objectives were three‐fold: (1) to determine if a personalised tourniquet system (PTS) hardware technology performs nominally and enables BFR exercise in microgravity; (2) to determine if BFR augments the ...
Yannick Laflamme, Etienne Chassé, Luke Hughes   +2 more
wiley   +1 more source

A Large-Scale Evaluation into the Accuracy of Bioelectrical Impedance Devices for Assessing Body Composition: A 10-Year Analysis in Canadian University Students [PDF]

Journal of Kinesiology and Exercise Sciences
Background: The assessment of body composition can be conducted using a variety of devices, each providing practitioners unique advantages such as cost effectiveness, efficiency, accessibility, and accuracy.
Natalie A. Adam, Andrew S. Perrotta, Chad A. Sutherland, Paula M. van Wyk, Sarah J. Woodruff, Adriana M. Duquette   +5 more
doaj   +1 more source

A comparison of normobaric and hypobaric hypoxia effects on cerebrovascular response pre and post maximal exercise

Experimental Physiology, EarlyView.
Abstract A lack of consensus remains on whether normobaric hypoxia (NH) and hypobaric hypoxia (HH) may differentially impact physiological factors affecting cerebrovascular regulation, particularly with an additional strenuous exercise component. We sought to compare the acute effects of NH and HH on global cerebral blood flow (gCBF) at an altitude ...
Rachel Turner, Giovanni Vinetti, Giacomo Strapazzon, Hannes Gatterer   +3 more
wiley   +1 more source

Portable bioimpedance monitor evaluation for continuous impedance measurements. Towards wearable plethysmography applications [PDF]

, 2013
Personalised Health Systems (PHS) that could benefit the life quality of the patients as well as decreasing the health care costs for society among other factors are arisen.
Lindecrantz, Kaj,, K. Lindecrantz, Ferreira, J, Seoane, Fernando,, F. Seoane, Seoane, F, Lindecrantz, K,, Ferreira, J., J. Ferreira   +8 more
core   +1 more source

Modelling Dynamically Re-sizeable Electrodes (DRE) for Targeted Transcutaneous Measurements in Impedance Plethysmography [PDF]

, 2020
Impedance plethysmography of extremities typically uses band electrodes around limbs to monitor changes in blood volume. This often causes monitored blood variations to only generate minuscule impedance values relative to the measured baseline ...
Triantis, I., Hashim, Z.Q., Constantinou, L.   +2 more
core   +1 more source