What question did this study set out to answer?

This study aims to investigate how skin cooling and heating affect heart rate regulation by the arterial baroreflex in humans.

February 1, 2000Journal of Applied Physiology

Modulation of arterial baroreflex control of heart rate by skin cooling and heating in humans

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Why the study?

Does whole body thermal stress (cooling and heating) modulate arterial baroreflex control of heart rate in healthy men?

Population

15 healthy men

Comparison

Whole body thermal stress produced by a cool or… vs Normothermic control period

Authors

FYFumio YamazakiUniversity of Tsukuba RSRyoko SoneFukushima Medical University

Discussion

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Implication

Does not support practice changes in baroreflex assessment; leaves open effects in patients with cardiovascular disease.

Key Points

This study aims to investigate how skin cooling and heating affect heart rate regulation by the arterial baroreflex in humans.
15 healthy men were exposed to whole body thermal stress via a water-perfused suit during supine rest.
Heart rate sensitivity to arterial pressure changes was measured during normothermia and thermal stress.
Carotid baroreflex sensitivity was evaluated based on HR responses to changes in carotid distending pressure.
Overall arterial baroreflex sensitivity increased from -1.32 to -2.13 beats.min(-1).mmHg(-1) during cooling (P < 0.05).
Overall sensitivity remained unchanged during heating (-1.39 to -1.40 beats.min(-1).mmHg(-1)).
Carotid baroreflex sensitivity did not differ between cooling or heating conditions.

Structured PICO

Does whole body thermal stress (cooling and heating) modulate arterial baroreflex control of heart rate in healthy men?

Population

15 healthy men

Intervention

Whole body thermal stress (skin cooling and heating) produced by a cool or hot water-perfused suit during supine rest

Comparator

Normothermic control period

Outcome

Overall arterial baroreflex sensitivity in heart rate controlsurrogate

Whole body skin cooling, but not heating, augments the sensitivity of heart rate control by the extracarotid arterial baroreflex in healthy men.

Cite This Study

Yamazaki et al. (2000) studied this question.

synapsesocial.com/papers/6a3f8ede84e5814408cd570f https://doi.org/10.1152/jappl.2000.88.2.393

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Modulation of arterial baroreflex control of heart rate by skin cooling and heating in humans

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Modulation of arterial baroreflex control of heart rate by skin cooling and heating in humans

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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