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Terms in this set (50)

- We know that cardiac output and max a-vo2 difference significantly decrease from stoppage of endurance training

- Thus, the exercise physiologist knows that cardiac output and arteriovenous oxygen difference can greatly determine an athlete's V02ma
- . The exercise physiologist can subsequently focus on these adaptations when attempting to prescribe exercises or procedures to enhance the endurance athletes V02 max. For increasing cardiac output we know through endurance training the variable that is predominantly responsible is enhanced stroke volume.

We know that stroke volume can be increased by underwater training

- This is due to external pressure that the water places onto the body, specifically the interstitial space between the muscle and skin where water resides, and the external pressure returns this fluid to our circulatory system contributing to our blood plasma, thus increasing are venous return

- Increased volume of blood in the heart's chambers stretches them out over time (known as eccentric hypertrophy) which allows the athlete's heart chambers to fill greater even when the athlete performs out of water, (known as enhanced venous return)

- The more blood the chambers can carry, the more blood pumped per beat, thus enhanced stroke volume.
The strong influence of two variables: Cardiac output and arteriovenous oxygen difference with regards to r VO2 max, as observed in the research study, is also evident in that according to Fick's equation V02 max is the product of cardiac output multiplied by arteriovenous oxygen difference.
- All of which, and exercise physiologists can implement into their practice whilst attempting to enhance an endurance athletes V02 max