title: Validity of thoracic respiratory inductive plethysmography in high body mass index subjects.
abstract: We aim to evaluate thoracic respiratory inductive plethysmography (RIP) in high body mass index (BMI) subjects with a pneumotachometer (PT) as a reference. We simultaneously evaluated spontaneous breathing by RIP and PT in 10 low and 10 high BMI subjects at rest and in moderate exercise. We then recorded RIP amplitude with different excursions mimicking respiratory thoracic deformation, with different sizes of RIP belts surrounding cylinders of different perimeters with or without deformable foam simulating adipose tissue. RIP responses correlated with PT values in low and high BMI groups for inspiratory time (r=0.86 and r=0.91, respectively), expiratory time (r=0.96 and r=0.91, respectively) and amplitude (r=0.82 for both) but with a bias (-0.23±0.25L) for high BMI subjects. ANOVA revealed the effects of perimeter and simulated adiposity (p<0.001 for both). We concluded that thoracic perimeter and deformity of adipose tissue are responsible for biases in RIP response in high BMI subjects.
authors.affiliation: Université de Versailles Saint-Quentin-en-Yvelines, UFR des Sciences de la Santé, Montigny-le-Bretonneux, France; U1179 Inserm, Laboratoire de Physiologie TITAN, Montigny-le-Bretonneux, France; Service de Physiologie-Explorations Fonctionnelles, Hôpital Ambroise Paré, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Paris Ile-de-France Ouest, Boulogne-Billancourt, France. Electronic address: yann.retory@gmail.com.
authors.forename: Yann
authors.initials: Y
authors.lastname: Rétory
authors.affiliation: Université de Versailles Saint-Quentin-en-Yvelines, UFR des Sciences de la Santé, Montigny-le-Bretonneux, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: David
authors.affiliation: Service de Physiologie-Explorations Fonctionnelles, Hôpital Ambroise Paré, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Paris Ile-de-France Ouest, Boulogne-Billancourt, France.
authors.forename: Carole
authors.initials: C
authors.lastname: de Picciotto
authors.affiliation: Service de Physiologie-Explorations Fonctionnelles, Hôpital Ambroise Paré, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Paris Ile-de-France Ouest, Boulogne-Billancourt, France.
authors.forename: Pauline
authors.initials: P
authors.lastname: Niedzialkowski
authors.affiliation: Université de Versailles Saint-Quentin-en-Yvelines, UFR des Sciences de la Santé, Montigny-le-Bretonneux, France; U1179 Inserm, Laboratoire de Physiologie TITAN, Montigny-le-Bretonneux, France; Service de Physiologie-Explorations Fonctionnelles, Hôpital Ambroise Paré, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Paris Ile-de-France Ouest, Boulogne-Billancourt, France.
authors.forename: Marcel
authors.initials: M
authors.lastname: Bonay
authors.affiliation: Service de Physiologie-Explorations Fonctionnelles, Hôpital Ambroise Paré, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Paris Ile-de-France Ouest, Boulogne-Billancourt, France; CIAMS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France; CIAMS, Université d'Orléans, 45067, Orléans, France.
authors.forename: Michel
authors.initials: M
authors.lastname: Petitjean
mesh_terms: D000273:Adipose Tissue / Q000503:physiopathology; D000328:Adult; D000465:Algorithms; D000704:Analysis of Variance; D015992:Body Mass Index; D004548:Elasticity; D015444:Exercise / Q000502:physiology; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D009765:Obesity / Q000473:pathology / Q000503:physiopathology; D009929:Organ Size; D010991:Plethysmography / Q000295:instrumentation; D012119:Respiration; D012146:Rest; D013909:Thorax / Q000473:pathology / Q000503:physiopathology; D013997:Time Factors; D014783:Viscosity
keywords: BMI; Exercise; Respiratory inductive plethysmography; Validation