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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 185 for “"oxygen uptake"”.
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River oxygen uptake by benthic microorganisms
The factors influencing benthic microbial uptake of river dissolved oxygen (DO) and dissolved organic matter (DOM) were investigated in 4 New Zealand rivers receiving organic waste discharges from dairy factories and a pulp and paper company. A chamber system for in situ use was developed and …
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Oxygen Uptake Kinetics in Severe Intensity Exercise
… of this study was to describe mathematically the oxygen uptake kinetics during cycle ergometry, and to examine the effect of intensity on the kinetic responses within the severe domain. Sixteen volunteers performed a series of exercise tests at a range of intensities selected to elicit fatigue in …
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Maximum oxygen uptake predicted from submaximal tests
… rate and workload, the ARN also uses submaximal oxygen uptake as a parameter; The purpose of this study was to determine which of the 3 types of exercises used with the Astrand-Ryhming nomogram predicted max VO2 most accurately; Thirty subject's between the ages of 18 and 35 performed maximally …
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The measurement of oxygen uptake kinetics in children
… of the rate and magnitude of change of oxygen uptake to dynamic exercise, oxygen uptake kinetics (V02 KINETICS provides an alternative approach to exercise testing. A submaximal, intermittent, pseudo-random binary sequence (PRBS) exercise test to measure V02 KINETICS may provide a useful …
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Multifrequent work rate forcings in the assessment of oxygen uptake kinetics.
… system might be reflected in a determination of oxygen uptake (VO[2]) kinetics.The kinetics of VO[2] have been quantified in response to step, impulse, ramp and sinusoidal changes in work rate (WR). An alternative approach uses a technique in which the WR is perturbed according to a pseudorandom …
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Large contribution of light-dependent oxygen uptake to global O2 cycling
The oxygen triple-isotope composition (Δ′17O = δ′17O - θ × δ′18O) of tropospheric O2 is an important parameter used in mass-balance proxy estimates of gross oxygen productivity in the modern ocean and the global biosphere. We created a chemical reaction network box model of the Δ′17O budget of …
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Exercise physiology and cardiac function. Aspects on determinants of maximal oxygen uptake
… THV was a strong, independent predictor of peak oxygen uptake (VO2peak). Males had a larger left ventricular mass (LVM) normalized to THV when compared to females of similar fitness level. In Paper II, THV in relation to VO2peak was compared between 31 patients diagnosed with heart failure and a …
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Beyond the VO2max plateau a new approach for measuring maximal oxygen uptake
Maximal oxygen consumption (VO2max) is typically defined by the presence of the "plateau phenomenon" during incremental exercise tests, in which O2 consumption levels-off in spite of increases in workload. This is thought to reflect a limitation in the capacity of the heart to pump O2 enriched …
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Evaluation of oxygen uptake rate as an activated sludge process control parameter
… currently exists concerning whether or not oxygen uptake rate is a valid control parameter for monitoring the activated sludge process. A laboratory study was conducted to attempt to shed light on the controversy. Two bench-scale reactors were operated at steady state and under shock load. …
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Prediction of maximum oxygen uptake from a modified Ymca 3-minute step test
… exercise recovery heart rate (PERHR) and maximum oxygen uptake using a height specific bench with a modified Young Men's Christian Association (YMCA) 3-Minute Step Test was investigated. Sixty apparently healthy males and females between the ages of 18 and 55 years stepped on a height specific …
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A comparison of maximal oxygen uptake achieved from a horizontal and inclined treadmill test
The purpose of this study was to compare two protocols and the resulting VO2 max obtained. In one protocol grade only was used to impose greater workloads; in the other protocol speed only was used to impose greater workloads. In addition, maximum heart rate, perceived general fatigue, leg fatigue …
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The Effect of Varying Cadence in Cycle Ergometry on Submaximal Predictions of Peak Oxygen Uptake
… cycle ergometry test to accurately predict peak oxygen uptake (VO2) using the standard YMCA protocol workloads. There has been limited scholarship investigating the effect that varying cadence has on trained cyclists and almost none on untrained participants. For this study twelve moderately …
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Sex Differences in the Oxygen Uptake Kinetic Response to Moderate Intensity Exercise in Obese Adolescents
The oxygen uptake (VO2) kinetic response to exercise provides insight into aerobic performance and the efficiency of the body to maintain oxygen demand during the initiation of exercise. Previous research in normal weight children reports insignificant differences in gender VO2 on-kinetic responses …
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Oxygen Uptake as an Indictor of Metabolic Rate in a Neotenic Population of Eurycea Multiplicata
… the one used here. The present study measured oxygen uptake of these animals in the laboratory in order to predict how they might behave in response to changing temperatures. Animals were acclimated to both 10 and 20°C for three weeks, and tested at 5, 10, 15, 20, and 25°C. Warm-acclimated …
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Impact of the menstrual cycle on critical power and submaximal exercise oxygen uptake in recreationally active, eumenorrheic females
… in critical power (CP) and submaximal exercise oxygen uptake (VO2) across three distinct phases of the menstrual cycle (early follicular, late follicular, and mid luteal) in 12 recreationally active, eumenorrheic females. Menstrual cycle phase was determined using the 3-step method of …
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Effect of Endurance Arm Training on Selected Components Which Influence the Oxygen Uptake During Arm and Leg Exercise
… on the Fick Equation components which define the oxygen uptake. Thirty-eight college aged women participated in the study with 19 subjects serving in the experimental training group and 19 in the control group. A one-way analysis of covariance was used to examine the relation of the Fick Equation …
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Effects of land use on oxygen uptake by microorganisms on fine benthic organic matter in two Appalachian mountain streams
Oxygen uptake rates by fine benthic organic matter were measured on samples from two Appalachian mountain streams to determine the effects of land use patterns on microbial respiration. Both Coweeta Creek in western North Carolina, and Wolf Creek in western Virginia, flow through national forest, …
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