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72 results for “oxygen consumption”
Effects of Short Duration High-intensity Interval Training on Peak Oxygen Consumption
ClinicalTrials.gov study NCT04656509. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Oxygen Consumption in Post-stroke Patients During Various Walking Activities Compared to Healthy Controls
ClinicalTrials.gov study NCT05477238. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Renal Oxygen Consumption, Insulin Sensitivity, and Daily Caloric Restriction in ADPKD
ClinicalTrials.gov study NCT06496542. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
PErfusioN, OxyGen ConsUmptIon and ENergetics in ADPKD (PENGUIN)
ClinicalTrials.gov study NCT04407481. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Validation of a Novel Oxygen Consumption Measurement Technique in Neonates
ClinicalTrials.gov study NCT03154112. IPD Sharing: NO. Countries: 1. Publications: 1.
Gentle Jogger and Oxygen Consumption
ClinicalTrials.gov study NCT03602365. IPD Sharing: NO. Countries: 1. Publications: 1.
Acute Effect of Phototherapy With Light Emitting Diode (LED) on Muscle and Pulmonary Oxygen Consumption on Diabetes Mellitus
ClinicalTrials.gov study NCT01889784. IPD Sharing: NO. Countries: 1. Publications: 9.
Metabolism and Oxygen Consumption During Functional Electrical Stimulation Cycling in COPD
ClinicalTrials.gov study NCT02594722. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Control of Renal Oxygen Consumption, Mitochondrial Dysfunction, and Insulin Resistance
ClinicalTrials.gov study NCT04074668. IPD Sharing: UNDECIDED. Countries: 1. Publications: 2.
Locomotor endurance and oxygen consumption of harvestmen
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Oxygen consumption of juvenile brown trout, Salmo trutta, under varying thermal conditions during embryogenesis
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Ocean warming reduces gastropod survival despite maintenance of feeding and oxygen consumption rates
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Mitochondrial oxygen consumption and reactive oxygen species production in hepatopancreas mitochondria of Mya arenaria acclimated under different oxygen regimes
<p>These are the metadata for a publication "Effects of variable oxygen regimes on mitochondrial bioenergetics and reactive oxygen species production in a marine bivalve <em>Mya arenaria</em>" under consideration for publication in the Journal Of Experimental Biology. To study the impacts of different oxygen regimes, we exposed a common sediment-dwelling bivalve, the soft-shell clam <em>Mya arenaria</em>, for 21 days to chronic hypoxia (P<sub>O2</sub>~4.1 kPa), cyclic hypoxia (P<sub>O2</sub>~12.7-1.9 kPa, mean = 5.7 kPa), or normoxia (P<sub>O2</sub>~21.1 kPa). pH was manipulated to mimic the covariation in CO<sub>2</sub>/pH and oxygen levels in coastal hypoxic zones. Mitochondrial respiration, including the proton leak, the capacity for oxidative phosphorylation (OXPHOS), the maximum activity of the electron transport system (ETS), reactive oxygen species (ROS) production, and activity and oxygen affinity of cytochrome c oxidase (CCO) were assessed. Acclimation to constant hypoxia did not affect the studied mitochondrial traits except for a modest decrease in the OXPHOS coupling efficiency. Cyclic hypoxia had no effect on the OXPHOS or ETS capacity, but increased the proton leak and lowered the mitochondrial OXPHOS coupling efficiency. Furthermore, mitochondria of clams acclimated to cyclic hypoxia had higher rates of ROS generation compared with the clams acclimated to normoxia or chronic hypoxia. CCO activity was upregulated under the cyclic hypoxia, but oxygen affinity of CCO did not change. These findings indicate that long-term cyclic hypoxia has a stronger impact on the mitochondria of <em>M. arenaria</em> than chronic hypoxia and might lead to impaired ATP synthesis, higher costs of the mitochondrial maintenance and oxidative stress. These changes might negatively affect populations of <em>M. arenaria</em> in the coastal Baltic Sea under increasing hypoxia pressure.</p>
Figure 3 from: Freire CA, Rios LP, Giareta EP, Castellano GC (2017) Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer. Zoologia 34: 1-9. https://doi.org/10.3897/zoologia.34.e20173
Figure 3 - Initial (circles) and final (squares) pH and excreted ammonia (N-NH3) in water of M. acanthurus exposed to salinities 0 (control), 10, 20, and 30 psu for 4 (white symbols) and 8 hours (black symbols). Different letters mean differences between salinities within each time of exposure. * = value for 4 hours is different from value for 8 hours within a same salinity, # = initial and final values of water pH are different.
Figures 1-2 from: Freire CA, Rios LP, Giareta EP, Castellano GC (2017) Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer. Zoologia 34: 1-9. https://doi.org/10.3897/zoologia.34.e20173
Figures 1-2 - Initial (circles) and final (squares) levels of dissolved oxygen in the water (1) and lactate concentration in the hemolymph (2) of M. acanthurus exposed to salinities 0 (control), 10, 20, and 30 psu for 4 (white symbols) and 8 hours (black symbols). Values near to the lines represent oxygen consumption (mean ± std dev) as a percentage of the initial oxygen concentration (considered 100%, as a reference value). (#) Initial and final levels of dissolved oxygen are different. There were no significant differences between salinities or times (4 and 8 hours) for oxygen consumption and lactate concentration.
Figures 4-5 from: Freire CA, Rios LP, Giareta EP, Castellano GC (2017) Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer. Zoologia 34: 1-9. https://doi.org/10.3897/zoologia.34.e20173
Figures 4-5 - Hemolymph osmolality (4) and muscle water content (5) of M. acanthurus exposed to salinities 0 (control), 10, 20, and 30 psu for 4 (white circles) and 8 hours (black circles). Dashed line represents water expected values, from the relationship 1 psu = 30 mOsm/kg H2O, short horizontal lines indicate value of calculated water osmolality for the tested salinities. Different letters mean differences between salinities within each time of exposure. * = value for 4 hours is different from value for 8 hours within a same salinity.
Figure 5 in Oxygen consumption rates and respiratory carbon losses in three species of copepods (Acartia clausi, Calanus helgolandicus and Limnocalanus macrurus) during starvation
Figure 5. Respiratory carbon cumulative losses in accordance with the respiration rates of active (A) and anesthetized (B) individuals of Acartia clausi (Ac) and Calanus helgolandicus (Ch) during starvation, recalculated for a temperature of 17 °C, and a similar increase in respiratory losses of carbon in Limnocalanus macrurus (Lm) at 13 °C.
Figure 3 in Oxygen consumption rates and respiratory carbon losses in three species of copepods (Acartia clausi, Calanus helgolandicus and Limnocalanus macrurus) during starvation
Figure 3. Total to basal respiration rate ratio in Acartia clausi (red line), Limnocalanus macrurus (black line) and Calanus helgolandicus (blue line). Note, the R: Rbas ratio values may differ tot from values given in Table 2, since they were calculated from the results of the experiments in which the values of R tot and R bas were obtained from the same individuals (see details in Materials and Methods section). Low-case letters (a, b) signify the significant variable differences from Duncan's multiple range test (DMRT), p <0.05.
Thiamine vs. Placebo to Increase Oxygen Consumption After Cardiac Arrest
ClinicalTrials.gov study NCT02974257. IPD Sharing: NO. Countries: 1. Publications: 0.
Effects of Passive Heat Therapy on Oxygen Consumption and Cardiovascular Fitness in Adults
ClinicalTrials.gov study NCT04026126. IPD Sharing: NO. Countries: 1. Publications: 0.
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