Effect of acute ambient temperature exposure on cardio-pulmonary and respiratory kinetics in men

Drescher, Uwe; Koschate, Jessica; Hoffmann, Uwe; Schneider, Stefan; Werner, Andreas

doi:10.1080/02656736.2017.1354402

Cited by 5 publications

(1 citation statement)

References 51 publications

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“…In terms of control technology, the CRP responses to exercise can be described as a single-input/single-output system (i. e. WR-CRP). The description of these systems allows to identify the influence of factors such as type of exercise (Koschate et al 2019a , b ), ambient conditions (Drescher et al 2018 ) and individual characteristics, e. g. age (Koschate et al 2016a , b ; Ebine et al 2018 ; Patti et al 2021 ) or fitness (Beltrame et al 2020 ; Inglis et al 2021 ), on the regulation of the cardiorespiratory system. From the individual kinetics and other characteristics of regulation, interventions, e. g. exercise prescriptions for athletes and patients, can be defined.…”

Section: Introductionmentioning

confidence: 99%

Cardiorespiratory kinetics in exercise physiology: estimates and predictions using randomized changes in work rate

et al. 2021

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Purpose Kinetics of cardiorespiratory parameters (CRP) in response to work rate (WR) changes are evaluated by pseudo-random binary sequences (PRBS testing). In this study, two algorithms were applied to convert responses from PRBS testing into appropriate impulse responses to predict steady states values and responses to incremental increases in exercise intensity. Methods 13 individuals (age: 41 ± 9 years, BMI: 23.8 ± 3.7 kg m−2), completing an exercise test protocol, comprising a section of randomized changes of 30 W and 80 W (PRBS), two phases of constant WR at 30 W and 80 W and incremental WR until subjective fatigue, were included in the analysis. Ventilation ($$\dot{V}_{{\text{E}}}$$ V ˙ E ), O2 uptake ($$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 ), CO2 output ($$\dot{V}{\text{CO}}_{2}$$ V ˙ CO 2 ) and heart rate (HR) were monitored. Impulse responses were calculated in the time domain and in the frequency domain from the cross-correlations of WR and the respective CRP. Results The algorithm in the time domain allows better prediction for $$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 and $$\dot{V}{\text{CO}}_{2}$$ V ˙ CO 2 , whereas for $$\dot{V}_{{\text{E}}}$$ V ˙ E and HR the results were similar for both algorithms. Best predictions were found for $$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 and HR with higher (3–4%) 30 W steady states and lower (1–4%) values for 80 W. Tendencies were found in the residuals between predicted and measured data. Conclusion The CRP kinetics, resulting from PRBS testing, are qualified to assess steady states within the applied WR range. Below the ventilatory threshold, $$\dot{V}{\text{O}}_{2}$$ V ˙ O 2 and HR responses to incrementally increasing exercise intensities can be sufficiently predicted.

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Section: Introductionmentioning

confidence: 99%

Cardiorespiratory kinetics in exercise physiology: estimates and predictions using randomized changes in work rate

et al. 2021

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Monitoring of Core Body Temperature in Humans

Werner

Gunga

2019

Stress Challenges and Immunity in Space

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Temporal dissociation between muscle and pulmonary oxygen uptake kinetics: influences of perfusion dynamics and arteriovenous oxygen concentration differences in muscles and lungs

et al. 2018

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It is suggested that neither avDOpulm nor avDOmusc kinetic responses seem to be responsible for the differences between estimated [Formula: see text] and measured [Formula: see text] kinetics. Obviously, the conflation of avDO and perfusion ([Formula: see text] ) at different points in time and at different physiological levels drive potential differences in [Formula: see text] and [Formula: see text] kinetics. Therefore, [Formula: see text] should, in general, be considered whenever oxygen uptake kinetics are analyzed or discussed.

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Effect of acute ambient temperature exposure on cardio-pulmonary and respiratory kinetics in men

Cited by 5 publications

References 51 publications

Cardiorespiratory kinetics in exercise physiology: estimates and predictions using randomized changes in work rate

Cardiorespiratory kinetics in exercise physiology: estimates and predictions using randomized changes in work rate

Monitoring of Core Body Temperature in Humans

Temporal dissociation between muscle and pulmonary oxygen uptake kinetics: influences of perfusion dynamics and arteriovenous oxygen concentration differences in muscles and lungs

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