On Mon, 17 Nov 2003 09:12:21 +0100, "M.W.Smith" <
[email protected]> wrote:
>Radioactive Man wrote:
>
>> On Sun, 09 Nov 2003 10:39:21 +0100, "M.W.Smith" <
[email protected]> wrote:
>>
>>
>>>Radioactive Man wrote:
>>>
>>>
>>>>On 7 Nov 2003 19:47:54 -0800,
[email protected] (Rich) wrote:
>>>>
>>>>
>>>>
>>>>>I am new to swimming.
>>>>>
>>>>>I was asked to stop running by the doctor. He recommended that I take up swimming instead.
>>>>>
>>>>>I was interested in losing weight. Is it possible to lose a pound or two swimming?
>>>>
>>>>
>>>>Yes, but if you aren't already a proficient swimmer, it will take a long time to get to the
>>>>point where you can burn as many calories in an hour of swimming as you could in an hour of
>>>>running.
>>>
>>>I don't agree. A proficient swimmer will burn less energy in an hour of swimming than a novice,
>>>assuming they both swim for an hour.
>>
>>
>> If both are putting out a paced, but maximal effort, I believe the proficient swimmer will
>> burn more energy in an hour, provided both are actually swimming with reasonable technique.
>> If you allow thrashing, all bets are off. As long as he/she continues swimming with
>> reasonable technique, the less proficient swimmer will be limited by lactatic acid buildup in
>> the upper body.
>
>I get to invoke the law of the excluded middle here, or something. Proficient, in this case, means
>the swimmer knows how to swim well, so less proficient means more thrashing. If you don't allow
>thrashing, there isn't anything to compare. Proficiency refers to skill, not fitness. More skill
>means more speed for less effort. Less effort burns fewer calories.
I think one can learn reasonable swim technique long before one achieves optimal conditioning for
swimming. When such a swimmer tires out, he/she can either continue swimming with reasonable
technique, but use fewer calories because the upper body muscles simply cannot maintain the caloric
output. Or, he/she can thrash and keep up the same, or higher, level of caloric output by using
muscles that don't contribute to propulsion.
If you want to test this, try comparing your pace and breathing intensity during sprints vs. long
distance while using a pull-buoy. After a long time swimming with the pull-buoy, most swimmers,
including myself, are far more limited by tired arms than by breathing. If your O2 consumtion is
close to normal, non-exercise levels over a long period of time, then so is your metabolism. Without
the pull-buoy, inexperienced swimmers may thrash more when their arms tire, thus, they wind up
thinking they have a "wind" problem, when, in fact, all they have is a thrashing problem and a lack
of upper body conditioning.