To educate, entertain, and enthuse all those who venture beyond the shoreline. Over 10,300 articles on solo swims, pro races, relays, charity events, eco-swims, stage swims, marathon swims, trends, products, services, personalities, coaches, governing bodies, rules, demographics, books, films, blogs, conferences, camps, clinics, exploits and happenings in oceans, seas, lakes, rivers, dams, canals, channels, fjords, estuaries, lochs, coves, firths, straits, bays, and harbors.
Saturday, December 31, 2011
Why Your Heart Rate Increases At Open Water Finishes
When your body shifts from one posture to another (e.g., from the horizontal position while swimming to the vertical position while running or dolphining out of the water), the blood in your heart and lungs naturally tends to move towards your legs due to the influence of gravity. As the blood moves towards your lower limbs, the veins in your legs expand and venous pooling (accumulation of blood in the legs) occurs.
When your are in the vertical position, the parts of your body in higher positions than your heart experience a decrease in arterial blood pressure. Conversely, the parts of your body below your heart experience an increase in blood pressure. When the average adult stands up, there is typically a rise in venous blood pressure in the lower limbs to 90 mmHg. When the veins in your legs expand and pooling occurs, the rate of venous return (blood flow back to your heart) correspondingly decreases. As a result, your heart's stroke volume decreases and a transient drop in blood pressure is created.
As your blood pressure falls to compensate for this change, the sympathetic nervous system kicks into action and your heart rate increases along with the vascular resistance. Consequently, your blood pressure recovers and a balance is maintained as your heart rate spikes when you stop swimming and start running to the finish.
In order to help you adapt to these changes from the swimming position to the running (or walking) position, deck-ups are a great way to help you improve and become accustomed to this sudden heart spike and get better prepared for a fast finish.
Copyright © 2011 by Open Water Source
Open Water Swimming Magazine
Open Water Swimming MagazineThe Open Water Swimming Magazine is the monthly magazine entirely focused on open water swimming heroes and heroines of every age, ability, and background. Published by the World Open Water Swimming Association, the Open Water Swimming Magazine is a free benefit to WOWSA members.
WOWSA Member Benefits include 12 issues of the Open Water Swimming Magazine, the annual 276-page Open Water Swimming Almanac, a free listing in Sponsor My Swim, outstanding product discounts from FINIS, an entry in Openwaterpedia and more...
The Other Shore
The Other Shore follows world record holder and legendary swimmer Diana Nyad as she comes out of a thirty-year retirement to re-attempt an elusive dream: swimming 103 miles non-stop from Cuba to Florida without the use of a shark cage. Her past and present collide in her obsession with a feat that nobody has ever accomplished. At the edge of The Devil’s Triangle, tropical storms, sharks, venomous jellyfish, and one of the strongest ocean currents in the world, all prove to be life-threatening realities. Timothy Wheeler’s documentary brings Diana Nyad’s extraordinary adventure to life as Diana sets out to prove that will and determination are all you need to make the unimaginable possible.
2014 Open Water Swimming Almanac
An Almanac for Open Water SwimmingAn almanac is essentially a body of knowledge which is so complete that it enables people in different fields to make predictions about the future of their respective industries.
This, for example, was the purpose of the traditional farmers almanacs. It enabled farmers to determine as accurately as possible which crops to plant for the greatest harvests in a given year.
But the farmers almanac was just one example among many.
There are, of course, many different kinds of almanacs.
In fact, there is even one for open water swimming...
Preview the Open Water Swimming Almanac:
The trends are very clear.
The tide is rising for open water swimming.