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body plethysmography

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https://www.readbyqxmd.com/read/28748646/small-airway-dysfunction-in-chronic-hypersensitivity-pneumonitis
#1
Selene Guerrero Zúñiga, Julia Sánchez Hernández, Heidegger Mateos Toledo, Mayra Mejía Ávila, Laura Gochicoa-Rangel, José Luis Miguel Reyes, Moisés Selman, Luis Torre-Bouscoulet
BACKGROUND AND OBJECTIVE: Lung biopsies from patients with hypersensitivity pneumonitis (HP) have demonstrated small airway (SA) involvement, but there is no information concerning SA function in HP, and it is unknown whether pharmacological treatment could modify its function. SA function in patients with chronic HP using ultrasonic pneumography (UPG) and impulse oscillometry (IOS) was explored. We also compared initial results with those obtained after 4 weeks of standardized treatment with azathioprine and prednisone...
July 26, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28737667/prenatal-vitamin-d-intake-cord-blood-25-hydroxyvitamin-d-and-offspring-body-composition-the-healthy-start-study
#2
Katherine A Sauder, Hallie J Koeppen, Allison L B Shapiro, Kathryn E Kalata, Alexandra V Stamatoiu, Brandy M Ringham, Deborah H Glueck, Jill M Norris, Dana Dabelea
Vitamin D deficiency in pregnancy may be associated with increased offspring adiposity, but evidence from human studies is inconclusive. We examined associations between prenatal vitamin D intake, 25-hydroxyvitamin D (25(OH)D) in cord blood, and offspring size and body composition at birth and 5 months. Participants included 605 mother-offspring dyads from the Healthy Start study, an ongoing, pre-birth prospective cohort study in Denver, Colorado, USA. Prenatal vitamin D intake was assessed with diet recalls and questionnaires, and offspring body composition was measured via air displacement plethysmography at birth and 5 months...
July 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28736210/effects-of-positive-expiratory-pressure-on-chest-wall-volumes-in-subjects-with-stroke-compared-to-healthy-controls-a-case-control-study
#3
Elis E A Cabral, Vanessa R Resqueti, Illia N D F Lima, Lucien P Gualdi, Andrea Aliverti, Guilherme A F Fregonezi
BACKGROUND: Alterations in respiratory system kinematics in stroke lead to restrictive pattern associated with decreased lung volumes. Chest physical therapy, such as positive expiratory pressure, may be useful in the treatment of these patients; however, the optimum intensity to promote volume and motion changes of the chest wall remains unclear. OBJECTIVE: To assess the effect of different intensities of positive expiratory pressure on chest wall kinematics in subjects with stroke compared to healthy controls...
July 8, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28721030/regular-physical-exercise-improves-cardiac-autonomic-and-muscle-vasodilatory-responses-to-isometric-exercise-in-healthy-elderly
#4
Adriana de Oliveira Sarmento, Amilton da Cruz Santos, Ivani Credidio Trombetta, Marciano Moacir Dantas, Ana Cristina Oliveira Marques, Leone Severino do Nascimento, Bruno Teixeira Barbosa, Marcelo Rodrigues Dos Santos, Maria do Amparo Andrade, Anna Myrna Jaguaribe-Lima, Maria do Socorro Brasileiro-Santos
The objective of this study was to evaluate cardiac autonomic control and muscle vasodilation response during isometric exercise in sedentary and physically active older adults. Twenty healthy participants, 10 sedentary and 10 physically active older adults, were evaluated and paired by gender, age, and body mass index. Sympathetic and parasympathetic cardiac activity (spectral and symbolic heart rate analysis) and muscle blood flow (venous occlusion plethysmography) were measured for 10 minutes at rest (baseline) and during 3 minutes of isometric handgrip exercise at 30% of the maximum voluntary contraction (sympathetic excitatory maneuver)...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28701321/pituitary-adenylate-cyclase-activating-polypeptide-pacap-drives-cardiorespiratory-responses-to-heat-stress-in-neonatal-mice
#5
Karlene T Barrett, John Andrew Daubenspeck, Richard J A Wilson
The neuropeptide, pituitary adenylate cyclase-activating polypeptide (PACAP), has emerged as a principal and rate-limiting regulator of physiological stress responses in adult rodents and has been implicated in SIDS (Sudden Infant Death Syndrome). Recent studies show that PACAP plays a role in neonatal cardiorespiratory responses to hypoxia, hypercapnia and hypothermia, but not hyperthermia, which is often associated with SIDS. Here we tested the hypothesis that, consistent with a role in SIDS, PACAP is involved in regulating the neonatal cardiorespiratory responses to severe heat...
July 12, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28690498/amyloid-precursor-like-proteins-aplp1-and-aplp2-are-dispensable-for-normal-development-of-the-neonatal-respiratory-network
#6
Kang Han, Ulrike C Müller, Swen Hülsmann
Recent studies using animal models indicated that the members of the amyloid precursor protein (APP) gene family are important for the formation, maintenance, and plasticity of synapses. Despite this, the specific role of the APP homologs APLP1 and APLP2 within the CNS and PNS is still poorly understood. In contrast to the subtle phenotypes of single mutants, double knockout mice (DKO) lacking APP/APLP2 or APLP1/APLP2 die within the first day after birth. Whereas APP/APLP2-DKO mice show severe deficits of neuromuscular morphology and transmission, the underlying cause of lethality of APLP1/APLP2-DKO mice remains unclear...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28682934/the-accuracy-of-resting-metabolic-rate-prediction-equations-in-athletes
#7
Andrew R Jagim, Clayton L Camic, Jacob Kisiolek, Joel Luedke, Jacob Erickson, Margaret T Jones, Jonathan M Oliver
The purpose of this study was to determine the accuracy of five different resting metabolic rate (RMR) prediction equations in male and female athletes. Twenty-two female (19.7± 1.4 yrs.; 166.2 ± 5.5 cm; 63.5 ± 7.3 kg; 49.2 ± 4.3 kg of Fat-Free Mass; 23.4 ± 4.4 BF%) and twenty-eight male (20.2 ± 1.6 yrs.; 181.9 ± 6.1 cm; 94.5 ± 16.2 kg; 79.1 ± 7.2 kg of FFM; 15.1 ± 8.5% BF) athletes were recruited to participate in one day of metabolic testing. Assessments comprised RMR measurements via indirect calorimetry and body composition analyses via air displacement plethysmography...
July 3, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28672039/validity-and-reliability-of-total-body-volume-and-relative-body-fat-mass-from-a-3-dimensional-photonic-body-surface-scanner
#8
Carolin Adler, Astrid Steinbrecher, Lina Jaeschke, Anja Mähler, Michael Boschmann, Stephanie Jeran, Tobias Pischon
OBJECTIVE: Three-dimensional photonic body surface scanners (3DPS) feature a tool to estimate total body volume (BV) from 3D images of the human body, from which the relative body fat mass (%BF) can be calculated. However, information on validity and reliability of these measurements for application in epidemiological studies is limited. METHODS: Validity was assessed among 32 participants (men, 50%) aged 20-58 years. BV and %BF were assessed using a 3DPS (VitusSmart XXL) and air displacement plethysmography (ADP) with a BOD POD® device using equations by Siri and Brozek...
2017: PloS One
https://www.readbyqxmd.com/read/28659825/brain-activation-by-h1-antihistamines-challenges-conventional-view-of-their-mechanism-of-action-in-motion-sickness-a-behavioral-c-fos-and-physiological-study-in-suncus-murinus-house-musk-shrew
#9
Longlong Tu, Zengbing Lu, Karolina Dieser, Christina Schmitt, Sze Wa Chan, Man P Ngan, Paul L R Andrews, Eugene Nalivaiko, John A Rudd
Motion sickness occurs under a variety of circumstances and is common in the general population. It is usually associated with changes in gastric motility, and hypothermia, which are argued to be surrogate markers for nausea; there are also reports that respiratory function is affected. As laboratory rodents are incapable of vomiting, Suncus murinus was used to model motion sickness and to investigate changes in gastric myoelectric activity (GMA) and temperature homeostasis using radiotelemetry, whilst also simultaneously investigating changes in respiratory function using whole body plethysmography...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28659296/an-observational-cohort-study-of-weight-and-length-derived-anthropometric-indicators-with-body-composition-at-birth-and-5-months-the-healthy-start-study
#10
Wei Perng, Brandy M Ringham, Deborah H Glueck, Katherine A Sauder, Anne P Starling, Mandy B Belfort, Dana Dabelea
Background: Despite widespread use of weight- and length-based anthropometric indexes as proxies for adiposity, little is known regarding the extent to which they correspond with fat mass (FM) or fat-free mass (FFM) during infancy.Objective: This study aimed to examine associations of 3 derived indicators-weight-for-age z score (WFAZ), weight-for-length score (WFLZ), and body mass index z score (BMIZ)-with FM, percentage of FM, and FFM measured by air-displacement plethysmography during the first 5 mo of life...
June 28, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28651694/maternal-plasma-phosphatidylcholine-polyunsaturated-fatty-acids-during-pregnancy-and-offspring-growth-and-adiposity
#11
Jonathan Y Bernard, Mya-Thway Tint, Izzuddin M Aris, Ling-Wei Chen, Phaik Ling Quah, Kok Hian Tan, George Seow-Heong Yeo, Marielle V Fortier, Fabian Yap, Lynette Shek, Yap-Seng Chong, Peter D Gluckman, Keith M Godfrey, Philip C Calder, Mary F F Chong, Michael S Kramer, Jérémie Botton, Yung Seng Lee
BACKGROUND: Polyunsaturated fatty acids (PUFA) are essential for offspring development, but it is less clear whether pregnancy PUFA status affects growth and adiposity. METHODS: In 985 mother-offspring pairs from the ongoing Singaporean GUSTO cohort, we analyzed the associations between offspring growth and adiposity outcomes until age 5 years and five PUFAs of interest, measured in maternal plasma at 26-28 weeks' gestation: linoleic acid (LA), arachidonic acid, α-linolenic acid, eicosapentaenoic acid, and docosahexaenoic acid (DHA)...
June 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28633495/estradiol-protects-against-cardio-respiratory-dysfunctions-and-oxidative-stress-in-intermittent-hypoxia
#12
Sofien Laouafa, Alexandra Ribon-Demars, François Marcouiller, Damien Roussel, Aida Bairam, Vincent Pialoux, Vincent Joseph
Study Objectives: We tested the hypothesis that estradiol (E2) protects against cardio-respiratory disorders and oxidative stress induced by chronic intermittent hypoxia (CIH) in adult female rats. Methods: Sprague-Dawley female rats (230-250g) were ovariectomized (OVX) and implanted with osmotic pumps delivering vehicle (Veh) or E2 (0.5 mg/kg/day). After 14 days of recovery, the rats were exposed to chronic CIH (21%-10% O2 - 8 hours/day - 10 cycles/hour) or room air (RA)...
June 19, 2017: Sleep
https://www.readbyqxmd.com/read/28624507/effect-of-pyridostigmine-on-in-vivo-and-in-vitro-respiratory-muscle-of-mdx-mice
#13
Gabriela de Cássia Sousa Amancio, Andrea Grabe-Guimarães, Dridi Haikel, Johan Moreau, Neila Marcia Silva Barcellos, Alain Lacampagne, Stefan Matecki, Olivier Cazorla
The current work was conducted to verify the contribution of neuromuscular transmission defects at the neuromuscular junction to Duchenne Muscular Dystrophy disease progression and respiratory dysfunction. We tested pyridostigmine and pyridostigmine encapsulated in liposomes (liposomal PYR), an acetylcholinesterase inhibitor to improve muscular contraction on respiratory muscle function in mdx mice at different ages. We evaluated in vivo with the whole-body plethysmography, the ventilatory response to hypercapnia, and measured in vitro diaphragm strength in each group...
September 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28621890/reference-data-for-babybody-plethysmographic-measurements-in-chinese-neonates-and-infants
#14
Gaoli Jiang, Albert Li, Libo Wang, Liling Qian, Yun Cao, Jianfeng Huang, Chengzhou Wan, Xiaobo Zhang
BACKGROUND AND OBJECTIVE: Population-specific pulmonary function reference data are essential to identify the nature and severity of respiratory diseases. However, there is a lack of reference data for Chinese neonates and infants. The objective of this study was to develop reference data for tidal breathing and plethysmographic measurements for Chinese subjects during the first 2 years of life. METHODS: Data of tidal breathing and plethysmography from healthy Chinese neonates (≤28 days) and infants (1-24 months) using the Jaeger MasterScreen BabyBody were collated...
June 16, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28605159/differential-impact-of-weight-loss-on-nonalcoholic-fatty-liver-resolution-in-a-north-american-cohort-with-obesity
#15
Vikrant Rachakonda, Rachel Wills, James P DeLany, Erin E Kershaw, Jaideep Behari
OBJECTIVE: Nonalcoholic fatty liver disease (NAFLD) is closely associated with obesity. In this study, a North American cohort with obesity enrolled in a lifestyle modification program was examined to determine the impact of weight loss on NAFLD resolution and sarcopenia. METHODS: Nondiabetic individuals with World Health Organization Class II/III obesity enrolled in a 6-month weight loss intervention were included. Steatosis was measured using computed tomography (CT)-derived liver:spleen attenuation ratio...
June 12, 2017: Obesity
https://www.readbyqxmd.com/read/28603348/functional-evaluation-of-breath-spirometry-and-body-plethysmography-comparison-in-people-with-cystic-fibrosis
#16
Jorge Hugo Villafañe, Camilo Corbellini, Elena Balestri, Stefania Dall'Ara, Federica Bazzocchi, Lucia Bertozzi
[Purpose] The aim of the present study was to establish up-to-date data regarding the lung function of cystic fibrosis (CF) patients. [Subjects and Methods] Forty-eight patients of both genders, with a diagnosis of CF, were recruited. As a result our sample presented, according to the GOLD criteria, 23 patients with mild lung obstruction (FEV1%pred: 89.86), 16 patients with moderate lung obstruction (FEV1%pred: 56.1) and 9 patients with severe obstruction (FEV1%pred: 32.1). [Results] All patients presented normal total lung capacity followed by an important residual volume increase...
May 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28602463/air-displacement-plethysmography-versus-bioelectrical-impedance-to-determine-body-composition-in-pediatric-hemodialysis-patients
#17
Molly Wong Vega, Poyyapakkam R Srivaths
OBJECTIVE: Protein energy wasting is difficult to assess in pediatric hemodialysis (HD) populations because of fluid shifts. Body composition (BC) analysis aids in monitoring nutrition therapy's effects on fat and lean mass. Air displacement plethysmography (ADP) is a "practical" gold standard for fat mass (FM) measurements. We aim to compare BC measures in a pediatric HD population via anthropometry, ADP, and bioelectrical impedance (BIA). DESIGN: The study was prospective cohort study and the setting was 1 pediatric HD unit in Houston, Texas...
June 8, 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/28584299/dissociation-of-body-mass-index-excess-weight-loss-and-body-fat-percentage-trajectories-after-3-years-of-gastric-bypass-relationship-with-metabolic-outcomes
#18
J Gómez-Ambrosi, P Andrada, V Valentí, F Rotellar, C Silva, V Catalán, A Rodríguez, B Ramírez, R Moncada, J Escalada, J Salvador, G Frühbeck
BACKGROUND/OBJECTIVES: Body weight, body mass index (BMI) and excess weight loss (EWL) are the most frequently used measures to analyse bariatric surgery outcomes. However, these measurements do not provide accurate information on body composition (BC) with body fat (BF) importantly determining the levels of cardiometabolic risk factors. Our aim was to analyse the evolution of BC after Roux-en-Y Gastric Bypass (RYGB) and its influence on the changes of cardiometabolic risk factors in comparison to BMI and EWL...
June 6, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28576975/route-of-administration-affects-corticosteroid-sensitivity-of-a-combined-ovalbumin-and-lipopolysaccharide-model-of-asthma-exacerbation-in-guinea-pigs
#19
Alexander P P Lowe, Rhian S Thomas, Anthony T Nials, Emma J Kidd, Kenneth J Broadley, William R Ford
Lipopolysaccharide (LPS) contributes to asthma exacerbations and development of inhaled corticosteroid insensitivity. Complete resistance to systemic corticosteroids is rare and most patients lie on a continuum of steroid responsiveness. The objective of this study was to examine the sensitivity of combined ovalbumin- (Ova) and LPS-induced functional and inflammatory responses to inhaled and systemic corticosteroid in conscious guinea-pigs, to test the hypothesis that the route of administration affects its sensitivity...
June 2, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28538260/longitudinal-physical-activity-body-composition-and-physical-fitness-in-preschoolers
#20
Marja H Leppänen, Pontus Henriksson, Christine Delisle Nyström, Hanna Henriksson, Francisco B Ortega, Jeremy Pomeroy, Jonatan R Ruiz, Cristina Cadenas-Sanchez, Marie Löf
PURPOSE: To investigate longitudinal associations of objectively-measured physical activity (PA) and sedentary behavior (SB) with body composition and physical fitness at a 12-month follow-up in healthy Swedish 4-year-old children. METHODS: The data from the population-based MINISTOP trial were collected between 2014-2016, and this study included the 138 children who were in the control group. PA and SB were assessed using the wrist-worn ActiGraph (wGT3x-BT) accelerometer during seven 24-hour periods, and subsequently, defined as SB, light-intensity PA (LPA), moderate-intensity PA (MPA), vigorous-intensity PA (VPA), and moderate-to-vigorous PA (MVPA)...
May 20, 2017: Medicine and Science in Sports and Exercise
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