BACKGROUND & AIMS Severe obesity imposes physical limitations to body composition assessment. Our aim was to compare body fat (BF) estimations of severely obese patients obtained by bioelectrical impedance (BIA) and air displacement plethysmography (ADP) for development of new equations for BF prediction. METHODS Severely obese subjects (83 female/36 male, mean age=41.6+/-11.6 years) had BF e...

The aims of this study were to cross-validate three clinical-grade measures of body composition, using an octopolar Bioelectrical Impedance (BIA), an ultrasound analyzer (US) and Air-Displacement Plethysmography (ADP) and second to compare the US scans of total abdominal, subcutaneous and visceral fat depths (mm) against the trunk percent fat (%BF) from the octopolar BIA. Twenty-six college-age...

There is much current interest in the electrical properties of biological materials, not least because of an increasing awareness of the possible physiological effects elicited by the absorption by tissues of non-ionising electromagnetic radiation (e.g. Presman 1970, Sheppard and Eisenbud 1977, Adey 1981, Illinger 1981, Konig et a1 1981, Becker and Marino 1982, Frohlich and Kremer 1983, Adey an...

The aim was to evaluate the feasibility of using electrical impedance tomography (EIT) in horses. Thoracic EIT was used in nine horses. Thoracic and abdominal circumference changes were also measured with respiratory ultrasound plethysmography (RUP). Data were recorded during baseline, rebreathing of CO2 and sedation. Three breaths were selected for analysis from each recording. During baseline...

Chronic venous disease (CVD) is one of the most common cardiovascular disorders in Northern and Western Europe; however, the causative factors predisposing individuals to the disease are still under investigation. Age, sex, obesity, and family history were found to be major risk factors for CVD. Altered venous biomechanics may also contribute to the pathogenesis of venous disease. Twin studies ...

Measuring lung function in mice is essential for establishing the relevance of murine models to human lung disease. However, making such measurements presents particular technical challenges due to the small size of the animal, particularly with regard to the measurement of respiratory flows. In this review, we examine the various methods currently available for assessment of lung function in m...

Lung function responses to inhaled cotton dust were evaluated in a group of 58 healthy subjects by spirometry (MEFV curves) and forced random noise impedance parameters. Twenty-one of these subjects were also examined by body plethysmography to assess changes in airway resistance (Raw). For the study group as a whole, alterations in lung mechanical function after exposure to cotton dust were de...

BACKGROUND & OBJECTIVES Many methods are available for measuring body fat of an individual, each having its own advantages and limitations. The primary objective of the present study was to validate body fat estimates from individual methods using the 4-compartment (4C) model as reference. The second objective was to obtain estimates of hydration of fat free mass (FFM) using the 4C model. MET...

The airflow perturbation device (APD) is an instrument for the measurement of respiratory resistance. The APD is small, lightweight, fast and requires no special breathing manoeuvres. Airflow perturbation determines resistance by superimposing a periodic signal onto spontaneous breathing with a variable resistance device. Respiratory impedance is the ratio of magnitude of pressure perturbation ...