The exercise paradox may be solved by measuring the overall thrombotic state using native blood

Area of Science:

• Cardiovascular Science
• Exercise Physiology
• Hemostasis Research

Background:

• Exercise is generally considered cardioprotective against atherothrombotic diseases.
• However, exercise can occasionally precipitate sudden cardiac events, creating an 'exercise paradox'.
• Inadequate assessment of thrombotic and thrombolytic status may underlie this paradox.

Purpose of the Study:

• To introduce and evaluate a novel assay for assessing thrombotic and thrombolytic status.
• To investigate the utility of this assay in understanding the exercise paradox.
• To provide a more accurate measure of individual hemostatic balance during rest and physical exertion.

Main Methods:

• Development and application of a shear-induced thrombosis/endogenous fibrinolysis test.
• Utilizing non-anticoagulated blood samples for physiologically relevant testing.
• Assessment of hemostatic parameters at rest and immediately following exercise.

Main Results:

• The shear-induced thrombosis/endogenous fibrinolysis test provides a sensitive measure of thrombotic state.
• The test allows for dynamic assessment of hemostasis in response to exercise.
• This method offers a physiologically relevant evaluation of blood's clotting and clot-dissolving capacity.

Conclusions:

• The novel shear-induced thrombosis/endogenous fibrinolysis test is a valuable tool for assessing hemostatic status.
• This test can help elucidate the mechanisms behind exercise-induced sudden death.
• It offers a potential solution to the exercise paradox by enabling better risk stratification.