Read by QxMD icon Read

body plethysmography

Nobuhisa Ishii, Kazuhide Tomita, Shinsuke Suetake, Yukako Okuno, Kenta Kawamura, Reiko Takeshima, Hirotaka Ohse, Shigeyuki Imura
[Purpose] It is unclear whether diaphragmatic breathing (DB) results in lower respiratory muscle oxygen consumption during dynamic exercise. The purpose of this study was to compare oxygen consumption in the respiratory muscles (VO2 rm) with thoracic breathing (TB) and with DB, in healthy males during hyperventilation. [Subjects and Methods] Ten healthy men participated in this study. The subjects sat on a chair with the backrest reclined at an angle of 60 degrees. Respiratory parameters were measured breath by breath, using an expired gas analyzer...
February 2018: Journal of Physical Therapy Science
Asunción Ferri-Morales, Marcus Vinicius Nascimento-Ferreira, Dimitris Vlachopoulos, Esther Ubago-Guisado, Ana Torres-Costoso, Augusto Cesar F De Moraes, Alan R Barker, Luis A Moreno, Vicente Martínez-Vizcaino, Luis Gracia-Marco
PURPOSE: To examine the intermethods agreement of dual-energy X-ray absorptiometry (DXA) and foot-to-foot bioelectrical impedance analysis (BIA) to assess the percentage of body fat (%BF) in young male athletes using air-displacement plethysmography (ADP) as the reference method. METHODS: Standard measurement protocols were carried out in 104 athletes (40 swimmers, 37 footballers, and 27 cyclists, aged 12-14 y). RESULTS: Age-adjusted %BF ADP and %BF BIA were significantly higher in swimmers than footballers...
March 15, 2018: Pediatric Exercise Science
Israel Macedo, Luis Pereira-da-Silva, Manuela Cardoso
OBJECTIVE:  To determine the associations of measured protein, energy, and protein-to-energy (PER) intakes with body composition in human milk (HM)-fed preterm infants. STUDY DESIGN:  Neonates born at < 33 gestational weeks were eligible. Standard fortification method with modular supplements was used and the HM composition was measured. The weight gain velocity was calculated, and body composition was assessed by air displacement plethysmography at 40 weeks' postmenstrual age (PMA)...
February 2, 2018: American Journal of Perinatology
Laura Morlacchi, Paola Roggero, Maria Lorella Giannì, Beatrice Bracco, Debora Porri, Enrico Battiato, Camilla Menis, Nadia Liotto, Domenica Mallardi, Fabio Mosca
Background: Nutritional management of preterm infants aims to approximate the tissue growth and body composition of a fetus of the same postmenstrual age. The adequacy of the quality of protein supply can influence the rate and the relative quality of weight gain. Objective: We investigated the protein balance according to feeding regimen and the association between human milk feeding and fat-free mass content at the term-corrected age in very-low-birth-weight preterm infants...
February 1, 2018: American Journal of Clinical Nutrition
Steffen Vogelgesang, Marcus Niebert, Anne M Bischoff, Swen Hülsmann, Till Manzke
Mutations in the transcription factor methyl-CpG-binding protein 2 (MeCP2) cause the neurodevelopmental disorder Rett syndrome (RTT). Besides many other neurological problems, RTT patients show irregular breathing with recurrent apneas or breath-holdings. MeCP2-deficient mice, which recapitulate this breathing phenotype, show a dysregulated, persistent expression of G-protein-coupled serotonin receptor 5-ht5b ( Htr5b ) in the brainstem. To investigate whether the persistence of 5-ht5b expression is contributing to the respiratory phenotype, we crossbred MeCP2-deficient mice with 5-ht5b -deficient mice to generate double knockout mice ( Mecp2-/y ; Htr5b -/- )...
2018: Frontiers in Molecular Neuroscience
Xinyan Bi, Yi Ting Loo, Christiani Jeyakumar Henry
Few studies have been conducted to measure body composition in Asian populations. In this study, we determined the percent body fat (PBF) by using dual-energy X-ray absorptiometry (DEXA), air-displacement plethysmography (ADP or BOD POD), bioelectrical impedance analysis (BIA) and skinfold (SKF) in 445 healthy Singaporean adults. We observed that the BOD POD, BIA and SKF estimates of PBF were highly correlated with that from DEXA (as a reference method) among Singaporean adults. However, they all underestimated PBF (differences of 3...
March 5, 2018: Nutrients
Anushree Algotar, Ala K Shaikhkhalil, Kim Siler-Wurst, Swetha Sitaram, Ish Gulati, Sudarshan R Jadcherla
BACKGROUND: Body composition is an important predictor of long-term outcomes in neonates and may be altered by several factors. Innovative methods like air displacement plethysmography (ADP) can safely and reliably measure body composition, potentially assisting in individualization of nutrition therapy. OBJECTIVES: 1) To characterize patterns of body composition change in convalescing neonates in the neonatal intensive care unit (NICU) and examine factors leading to variation...
January 2018: JPEN. Journal of Parenteral and Enteral Nutrition
Yi-Bang Cheng, Qian-Hui Guo, Dong-Yan Zhang, Ying Wang, Qi-Fang Huang, Chang-Sheng Sheng, Ji-Guang Wang, Jan A Staessen, Yan Li
OBJECTIVE: Carotid-femoral pulse wave velocity (cfPWV) was associated with serum parathyroid hormone (PTH) in untreated Chinese. We investigated in the same cohort whether cfPWV, brachial-ankle (baPWV) and heart-brachial (hbPWV) pulse wave velocity (PWV) were associated with rs6127099 (CYP24A1) and rs4074995 (RGS14). A previously published genome-wide association study demonstrated that each additional copy of the T (rs6127099) or G (rs4074995) allele was associated with a 7% or 3% higher serum PTH, respectively...
March 5, 2018: Blood Pressure
Daniela de Melo Miranda Gonçalves, Gustavo Falbo Wandalsen, Ana Sílvia Scavacini, Fernanda Cordoba Lanza, Ana Lucia Goulart, Dirceu Solé, Amélia Miyashiro Nunes Dos Santos
BACKGROUND: Pulmonary function in former preterm infants may be compromised during childhood. OBJECTIVES: To assess pulmonary function in very-low-birth-weight preterm infants at 6-12 months of corrected age and analyze the factors associated with abnormal pulmonary function. METHODS: Cross-sectional study with preterm infants at 6-12 months of corrected age with birth weight <1500 g. Children with malformations or affected by neuromuscular and respiratory diseases were excluded...
March 2018: Respiratory Medicine
Marcin Grabicki, Barbara Kuźnar-Kamińska, Renata Rubinsztajn, Beata Brajer-Luftmann, Monika Kosacka, Agata Nowicka, Tomasz Piorunek, Magdalena Kostrzewska, Ryszarda Chazan, Halina Batura-Gabryel
The prevalence of chronic obstructive pulmonary disease (COPD) has increased more rapidly in women than in men during the past two decades. Clinical presentation, comorbidities and prognosis may differ between genders and may influence management decisions. The influence of gender on COPD expression has not been clearly explained to date. Thus, the aim of this study was to evaluate significant differences between women and men suffering from COPD, regarding clinical presentation, pulmonary function test results, comorbidities, and prognosis...
February 28, 2018: Advances in Experimental Medicine and Biology
Yogesh Satyendra Gupta, Swati S Shah, Chaya K Ahire, Prathamesh Kamble, Anupam S Khare, S S More
Background: Chronic obstructive pulmonary disease (COPD) is the fourth most common cause of death in the world, for which smoking is a common cause. It is preferable to diagnose COPD at an earlier stage and to assess its progression so that mortality and morbidity of the disease could be reduced. Hence, we conducted this study to assess parameters of body plethysmography in Indian population where the data are lacking and to assess whether the use of body plethysmography can detect COPD earlier...
March 2018: Lung India: Official Organ of Indian Chest Society
Malia N M Blue, Katie R Hirsch, Eric T Trexler, Abbie E Smith-Ryan
The purpose of the present study was to assess the validity of dual-energy X-ray absorptiometry (DXA) to estimate body volume (BV) for use in a four-compartment (4C) body composition model in an overweight/obese population. Body composition of 61 overweight/obese adults (Age: 37.3 ± 10.0 yrs; Height: 170.2 ± 9.5 cm; Body mass: 97.1 ± 17.4 kg) was measured by two methods: a criterion 4C model and a DXA-derived BV 4C model. For both models, bioelectrical impedance spectroscopy was used to estimate total body water; total body bone mineral content was measured by a full body DXA scan...
February 23, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Manuel J Coelho-E-Silva, Ricardo Rebelo-Gonçalves, Diogo Martinho, Alexis Ahmed, Leonardo G O Luz, João P Duarte, Vítor Severino, Rafael C Baptista, João Valente-Dos-Santos, Vasco Vaz, Rui S Gonçalves, Antonio Tessitore, António J Figueiredo
The current study aimed to examine the reproducibility of estimated peak power and estimated pedal velocity in a multi-trial 10-s all-out cycling test among adult athletes (n = 22; aged 23.50±4.73 years). Stature, sitting height and body mass were measured. Leg length was estimated as stature minus sitting height. Body volume was obtained from air displacement plethysmography and was subsequently used to calculate body density. Fat mass and fat-free mass were derived. The short-term power outputs were assessed from the force-velocity test (FVT), using a friction-braked ergometer on two separated occasions...
2018: PloS One
Neil D Detweiler, Kenneth G Vigil, Thomas C Resta, Benjimen R Walker, Nikki L Jernigan
Previous reports indicate roles for acid-sensing ion channels (ASICs) in both peripheral and central chemoreception, but the contributions of ASICs to ventilatory drive in conscious, unrestrained animals remain largely unknown. We tested the hypotheses that ASICs contribute to hypoxic- and hypercapnic-ventilatory responses. Blood samples taken from conscious, unrestrained mice chronically instrumented with femoral artery catheters were used to assess arterial O2, CO2, and pH levels during exposure to inspired gas mixtures designed to cause isocapnic hypoxemia or hypercapnia...
2018: PloS One
Joëlle Pion-Massicotte, Roger Godbout, Pierre Savard, Jean-François Roy
Portable polysomnography is often too complex and encumbering for recording sleep at home. We recorded sleep using a biometric shirt (electrocardiogram sensors, respiratory inductance plethysmography bands and an accelerometer) in 21 healthy young adults recorded in a sleep laboratory for two consecutive nights, together with standard polysomnography. Polysomnographic recordings were scored using standard methods. An algorithm was developed to classify the biometric shirt recordings into rapid eye movement sleep, non-rapid eye movement sleep and wake...
February 23, 2018: Journal of Sleep Research
Dympna Gallagher, Barak Rosenn, Tatiana Toro-Ramos, Charles Paley, Sonia Gidwani, Michelle Horowitz, Janet Crane, Susan Lin, John C Thornton, Xavier Pi-Sunyer
OBJECTIVE: The objective of this study was to determine the effectiveness of controlling maternal gestational weight gain (GWG) in the second and third trimesters on neonate body composition. METHODS: Two hundred ten healthy women with overweight (25 > BMI < 30) or obesity (BMI ≥ 30) were randomly assigned to a lifestyle intervention (LI) program focused on controlling GWG through nutrition and activity behaviors or to usual obstetrical care (UC). Infant fat and fat-free mass (FFM) at birth were measured by using air displacement plethysmography (PEA POD) and by using quantitative magnetic resonance (QMR)...
March 2018: Obesity
Richard M Bruce, Phi Anh Phan, Edmund Pacpaco, Najib M Rahman, Andrew Farmery
The Inspired Sinewave Technique (IST) is a novel method which can provide simple, non-invasive cardiopulmonary measurements. Over successive tidal-breaths the concentration of a tracer gas (i.e. nitrous oxide, N2 O) is sinusoidally modulated in inspired air. Using a single-compartment tidal-ventilation lung model, the resulting amplitude/phase of the expired sinewave allows estimation of end-expired lung volume (ELV), pulmonary blood flow and three indices for ventilatory heterogeneity (VH; ELV180 /FRCpleth , ELV180 /FRCpred and ELV60 /ELV180 )...
February 19, 2018: Experimental Physiology
Rebecca L Scalzo, Timothy A Bauer, Kylie Harrall, Kerrie Moreau, Cemal Ozemek, Leah Herlache, Shawna McMillin, Amy G Huebschmann, Jennifer Dorosz, Jane E B Reusch, Judith G Regensteiner
Background: People with type 2 diabetes (T2D) have impaired exercise capacity, even in the absence of complications, which is predictive of their increased cardiovascular mortality. Cardiovascular dysfunction is one potential cause of this exercise defect. Acute infusion of vitamin C has been separately shown to improve diastolic and endothelial function in prior studies. We hypothesized that acute vitamin C infusion would improve exercise capacity and that these improvements would be associated with improved cardiovascular function...
2018: Diabetology & Metabolic Syndrome
Andrew Low, Sarah George, Luke Howard, Nicholas Bell, Ann Millar, Robert M R Tulloh
BACKGROUND: Breathlessness is the most common symptom in people with pulmonary arterial hypertension and congenital heart disease (CHD-APAH), previously thought to be caused by worsening PAH, but perhaps also by inflammation and abnormalities of lung function. We studied lung function and airway inflammation in patients with CHD-APAH and compared the results with controls. METHODS AND RESULTS: Sixty people were recruited into the study: 20 CHD-APAH, 20 CHD controls, and 20 healthy controls...
February 14, 2018: Journal of the American Heart Association
Liotto Nadia, Orsi Anna, Menis Camilla, Piemontese Pasqua, Morlacchi Laura, Condello Chiara Cristiana, Giannì Maria Lorella, Roggero Paola, Mosca Fabio
BACKGROUND: A high early protein intake is associated with rapid postnatal weight gain and altered body composition. We aimed to evaluate the safety of a low-protein formula in healthy full-term infants. METHODS: A randomized controlled trial was conducted. A total of 118 infants were randomized to receive two different protein content formulas (formula A or formula B (protein content: 1.2 vs. 1.7 g/100 mL, respectively)) for the first 4 months of life. Anthropometry and body composition by air displacement plethysmography were assessed at enrolment and at two and 4 months...
February 13, 2018: BMC Pediatrics
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"