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40 results for “oxygen uptake”
Dataset of the study "Thirty seconds sit-to-stand test as an alternative for estimating peak oxygen uptake and six-minutes walking distance in women with breast cancer: a cross-sectional study"
<p>Data was collected to study the usefulness of the thirty seconds sit-to-stand test as an alternative for estimating peak oxygen uptake and six-minutes walking distance in women with breast cancer, which is a cross-sectional study derived from the ONCORE project (Randomized controlled trial on comprehensive exercise-based cardiac rehabilitation program for the prevention of anthracyclines and/or anti-HER2 antibodies-induced cardiotoxicity in breast cancer), ClinicalTrials.gov Identifier: NCT03964142</p> <p> </p> <p>DATASET FILE (xlsx) includes 4 sheets:<br> - Dataset_variables: all variables collected pre-post intervention<br> - Descriptive data (baseline): variables used for the descriptive analysis before the intervention (baseline)<br> - Data_CPET-30STS(pre-post): pooled data from CPET-30STS pre-post intervention<br> - Data_6MWD-30STS(pre-post): pooled data from 6MWD-30STS pre-post intervention</p>
A non‐steady state model based on dual nitrogen and oxygen isotopes to constrain moss nitrate uptake and reduction
<p><span><span>Epilithic mosses are early colonizers of the terrestrial biosphere, constitute a special ecosystem regulating rock-atmosphere interactions, and may be more restricted in their nitrogen (N) supply than other mosses.<sup> </sup>Terrestrial mosses can take up nitrate (NO<sub>3</sub><sup>-</sup>), a major form of bioavailable N, from soil substrates. However, the importance of substrate NO<sub>3</sub><sup>-</sup> relative to atmospheric NO<sub>3</sub><sup>-</sup> remains unclear in moss NO<sub>3</sub><sup>-</sup> utilization. This has prevented the understanding of moss NO<sub>3</sub><sup>-</sup> dynamics and its responses to environmental N loadings. Here we investigated the monthly concentrations, δ<sup>15</sup>N, and δ<sup>18</sup>O of NO<sub>3</sub><sup>-</sup> in four epilithic moss species from August, 2006 to August, 2007 in Guiyang, southwestern China. We developed a non-steady state isotope mass-balance model based on dual N and O isotopes to evaluate fractional contributions of atmospheric NO<sub>3</sub><sup>-</sup> (<i>Ф</i><sub>atm</sub>) and soil NO<sub>3</sub><sup>-</sup> (<i>Ф</i><sub>soil</sub>), moss NO<sub>3</sub><sup>-</sup> uptake flux (<i>F</i><sub>influx</sub>), moss NO<sub>3</sub><sup>-</sup> reduction flux (<i>F</i><sub>reduction</sub>), and the percentage of NO<sub>3</sub><sup>-</sup> reduction in total NO<sub>3</sub><sup>-</sup> uptake of mosses (expressed as <i>f</i><sub>reduced</sub>). Monthly <i>Ф</i><sub>soil</sub> values averaged 53 ± 13% and monthly <i>f</i><sub>reduced</sub> values averaged 50 ± 35%. Both monthly<i> F</i><sub>reduction</sub> and <i>f</i><sub>reduced</sub> values increased with monthly <i>F</i><sub>influx</sub> values, particularly when <i>Ф</i><sub>soil</sub> values were higher than <i>Ф</i><sub>atm</sub> values. However, the amount of annual NO<sub>3</sub><sup>-</sup> reduction (219.7 ± 30.5 μg-N/g, dw) accounted for only 1.0 ± 0.2% in bulk N of mosses. We conclude that half of NO<sub>3</sub><sup>-</sup> in epilithic mosses is derived from soil NO<sub>3</sub><sup>-</sup> and that NO<sub>3</sub><sup>-</sup> uptake from soil induces moss NO<sub>3</sub><sup>-</sup> reduction, but the total NO<sub>3</sub><sup>-</sup> assimilation contributed a low fraction to total N of study mosses. These findings are important for understanding N sources and dynamics in terrestrial mosses.</span></span></p>
Particle-Phase Uptake and Chemistry of Highly Oxygenated Organic Molecules (HOMs) from α-Pinene OH Oxidation
<p>Secondary organic aerosol (SOA) forms a major part of the tropospheric submicron particle mass. Still, the exact formation mechanisms of SOA have remained elusive. It is now admitted that highly oxygenated organic molecules (HOMs) can contribute to a large fraction of SOA formation. In this study, we performed a set of chamber experiments to investigate the SOA formation, and the HOMs uptake and processing directly formed by OH-radical initiated oxidation of α-pinene under two different aerosol seed conditions. Numerous HOM compounds were identified using advanced online and offline analytical techniques and grouped into four classes according to their different uptake behaviors. For the first time, individual HOMs uptake coefficients ranging from 1.1×10<sup>-2</sup> to 1.5×10<sup>-1</sup> were experimentally determined and analyzed using a resistance model which considers uptake limitations by individual gas- and/or particle-phase processes. This study demonstrates that the uptake coefficients of HOMs strongly depend on their molar mass and their respective O/C ratio. Results show that aerosol seed composition and phase state affect the initial uptake of HOMs. Furthermore, the study demonstrates that the acidity and/or different seed phase-state can significantly enhance the subsequent uptake through occurring acidity-driven reactions reflected in a reactive behavior, particularly under (NH<sub>4</sub>)HSO<sub>4</sub> seed conditions, promoting up to 3 times a higher SOA mass formation including the formation of highly-oxidized organosulfates (HOOS). Overall, the present study implies that HOMs and their subsequent chemical processing can play an important role in both the early growth of newly formed particles and SOA formation when particle acidity is high.</p>
Effect of KNO3 Compared to KCl on Oxygen UpTake in Heart Failure With Preserved Ejection Fraction (KNO3CK OUT HFPEF)
ClinicalTrials.gov study NCT02840799. IPD Sharing: NO. Countries: 1. Publications: 1.
Oral Iron Repletion Effects On Oxygen Uptake in Heart Failure
ClinicalTrials.gov study NCT02188784. IPD Sharing: YES. Countries: 1. Publications: 2.
A non‐steady state model based on dual nitrogen and oxygen isotopes to constrain moss nitrate uptake and reduction
Open the record for dataset details and reuse information.
Feasibility and Influence of Exercise Therapy on Oxygen Uptake and Right Heart Function in CTEPH Patients After PEA
ClinicalTrials.gov study NCT01393327. IPD Sharing: Not stated. Countries: 1. Publications: 29.
Cardiovascular Risk Factors, Maximal Oxygen Uptake and Sedentariness: an Observational Study
ClinicalTrials.gov study NCT01931111. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Impact of Cocoa Flavanols on Pulmonary Oxygen Uptake Kinetics and Exercise Tolerance in Sedentary Middle-aged Adults
ClinicalTrials.gov study NCT04370353. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Microcirculatory Oxygen Uptake in Sepsis
ClinicalTrials.gov study NCT02430142. IPD Sharing: Not stated. Countries: 1. Publications: 7.
PROgnostic Value of Exercise Capacity Measured as Peak Oxygen Uptake (pVO2) in Recipients of Left Ventricular Assist Devices
ClinicalTrials.gov study NCT04423562. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
An Improved Method for the Measurement of Oxygen and Anaesthetic Agent Uptake in Patients Using the Foldes-Biro Equation
ClinicalTrials.gov study NCT02003300. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Effect of Two Physical Training Programs on Oxygen Uptake and Heart Rate On-kinetics in Patients COPD
ClinicalTrials.gov study NCT01529489. IPD Sharing: Not stated. Countries: 1. Publications: 37.
Testosterone Improves Exercise Oxygen Uptake, Insulin Resistance and Muscle Strength in Elderly Patients With Chronic Heart Failure
ClinicalTrials.gov study NCT00512408. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Maximum Oxygen Uptake in ACL-injured Professional Soccer Players
ClinicalTrials.gov study NCT02674282. IPD Sharing: UNDECIDED. Countries: 1. Publications: 3.
Effect of Physical Training on Oxygen Uptake and Endothelial Function in Heart Transplant Recipients
ClinicalTrials.gov study NCT01028599. IPD Sharing: Not stated. Countries: 0. Publications: 1.
Oxygen Uptake Kinetics During Recovery From Maximal and Submaximal Exercise
ClinicalTrials.gov study NCT00001519. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Assessment of Maximal Oxygen Uptake in Cardiac Rehabilitation
ClinicalTrials.gov study NCT06113133. IPD Sharing: NO. Countries: 1. Publications: 0.
Oxygen Consumption and Sevoflurane Uptake Based on Physiological Dead Space Estimation
ClinicalTrials.gov study NCT05511584. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Influence of Respiratory and Exercise Therapy on Oxygen Uptake, Quality of Life and Right Ventricular Function in Severe Pulmonary Hypertension
ClinicalTrials.gov study NCT01394367. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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