Question for Science-minded swimmers...

Former Member
Former Member
During our swimming careers we have all experienced the feeling of "being in-shape" and not quite "in-shape". My question is this; From a physiological or Kinesiological standpoint, what is happening in your body when you can so easily go from being in-shape to losing that in a matter of a week or two? I'm an old masters swimmer now but even swimming High School, Club or College whenever I would go on a vacation or get sick for a week, it took two - three weeks to get back to where I was before the vacation or sickness? What is happening in our body when we can swim a 1:07 BR and then two weeks later can't break 1:10??? Thanks in advance for your answers and opinions... :confused:
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  • Former Member
    Former Member
    First let's agree that not everything is being lost in a matter of a week or two. The loss in fitness that occurs in such a small period of time is mainly due to a drop in cardiac output (caused by a drop of plasma volume) as well as a drop of intramitochondrial enzyme efficiency. Hypothetical question: I wonder if you can retrieve plasma from your body while in shape, sufficiently store it and then put it back into your body prior to a big meet to increase plasma volume? Would Michael Phelps' plasma help me? Sorry if these questions are odd but i love the science behind swimming!
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  • Former Member
    Former Member
    First let's agree that not everything is being lost in a matter of a week or two. The loss in fitness that occurs in such a small period of time is mainly due to a drop in cardiac output (caused by a drop of plasma volume) as well as a drop of intramitochondrial enzyme efficiency. Hypothetical question: I wonder if you can retrieve plasma from your body while in shape, sufficiently store it and then put it back into your body prior to a big meet to increase plasma volume? Would Michael Phelps' plasma help me? Sorry if these questions are odd but i love the science behind swimming!
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