Three aged and skilled sailors, being in a good condition of cardio metabolic compensation, took a seven days coastal sailing cruise. They daily underwent a cardiodynamic assessment by a impedance cardigraphy tool while staying seated on the moored boat. They showed a statistically significant inverse linear regression of beat-to-beat left ventricular stroke volume (LSV) versus the component of the head acceleration along the spatial X-axis, positioning the subject’s head so that the X-axis lay along the nose-ocipital direction. In fact, the temporally corresponding values of LSV inversely changed of about 11 ml on average, with an interindividual difference ranging from a minimum of about 6 ml to a maximum of about 14 ml, for each unitary head acceleration change. Since the reduction of left ventricular stroke volume may be due to the already observed vestibulo-sympathetic reflex from which limbs muscle vasodilation may occur, and considering that LSV falling induces a reduction in arterial blood pressure, it is hypothesized that the slow rolling of moored boat might also act as a non-invasive arterial blood pressure attenuator effect.

A MECHATRONIC TOOL FOR REVEALING INVERSE RELATIONSHIPS AMONG HEART’S STROKE VOLUME AND HEAD’S LINEAR ACCELERATION INDUCED BY MOORED BOATS ROLLING IN ELDERLY SAILORS WITH UNCHANGED BODY SIZES: A NON-DRUG ANTI-HYPERTENSIVE ADVANTAGE?

Tocco F.
Primo
Supervision
;
Velluzzi F.;Massidda M.;Mattana D. V.;Venturini S.;Bianco P.;Concu A.
Ultimo
2024-01-01

Abstract

Three aged and skilled sailors, being in a good condition of cardio metabolic compensation, took a seven days coastal sailing cruise. They daily underwent a cardiodynamic assessment by a impedance cardigraphy tool while staying seated on the moored boat. They showed a statistically significant inverse linear regression of beat-to-beat left ventricular stroke volume (LSV) versus the component of the head acceleration along the spatial X-axis, positioning the subject’s head so that the X-axis lay along the nose-ocipital direction. In fact, the temporally corresponding values of LSV inversely changed of about 11 ml on average, with an interindividual difference ranging from a minimum of about 6 ml to a maximum of about 14 ml, for each unitary head acceleration change. Since the reduction of left ventricular stroke volume may be due to the already observed vestibulo-sympathetic reflex from which limbs muscle vasodilation may occur, and considering that LSV falling induces a reduction in arterial blood pressure, it is hypothesized that the slow rolling of moored boat might also act as a non-invasive arterial blood pressure attenuator effect.
2024
Holder sailors; Moored boat's rolling; Head linear acceleration; Leg vessels sympathetic control
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/408003
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