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Medical Forum / General / General / October 2006Calorie burn in isometrics vs. wt lifting
All-- Suppose I curl a 20 lb weight, as many reps as I can, for one minute. Suppose I take a 20 lb weight, and *hold it at the "sticking point" (approx. 90 deg)* for one minute. Which would burn more calories, and why? Note that at all points in the ROM other than the sticking point, the motion is easier than at the sticking point, so conceivably more metabolic energy could be expended by just holding the weight at that one difficult point. If the answer to this particular exercise is not in favor of isometrics, is there a way to make isometrics burn more calories by varying the technique? Apply at more points in the ROM, perhaps? TIA. -- Mr. P.V.'d (formerly Droll Troll), Yonkers, NY Ever-preparing for The Grand Insertion Party Nominee, IPPVM Independent Party of the Proctologically Violated®© (M)a.ses "That's proly not a hemorrhoid you're feeling.... " entropic3.14decay at optonline2.718 dot net; remove pi and e to reply--ie, all d'numbuhs > All-- > [quoted text clipped - 20 lines] > entropic3.14decay at optonline2.718 dot net; remove pi and e to reply--ie, > all d'numbuhs You would burn more ATP by holding your arm straight out with a weight at the end, then you would doing curls, as your arm would relax inbetween reps. Could you improve the energy burn? Doing your excercises in cooler weather, that would make the body generate more heat, hence burn more calories. Tensing all the muscles in the chest(wouldn't really recommend this though) or legs, while holding the weight out would improve the energy burn also. Those would be more of a strength training and toning options though. For sheer calorie burning, swimming would probably be the best, as it involves more muscles at cooler temperatures and with higher cardiovascular requirements. Hope that helped.... You are probably right. One can simply do a qualitative assessment of the breathing involved--no heavy breathing, not a lot of calories being burned, by dint of VO2. Do you have data or links as to the increased cal. burn due to reduced temperature? Or is it simple physics? :) Bear in mind that if the muscle temperature itself gets cool, the enzymes (meaning actin/myosin) do not function optimally, which is why some runners/dancers wear leg warmers. In addition to looking aerobically hip. :) --- Mr. P.V.'d (formerly Droll Troll), Yonkers, NY Ever-preparing for The Grand Insertion Party Nominee, IPPVM Independent Party of the Proctologically Violated®© (M)a.ses "That's proly not a hemorrhoid you're feeling.... " entropic3.14decay at optonline2.718 dot net; remove pi and e to reply--ie, all d'numbuhs Proctologically Violated©® wrote: > All-- > [quoted text clipped - 24 lines] > entropic3.14decay at optonline2.718 dot net; remove pi and e to reply--ie, > all d'numbuhs You would burn more ATP by holding your arm straight out with a weight at the end, then you would doing curls, as your arm would relax inbetween reps. Could you improve the energy burn? Doing your excercises in cooler weather, that would make the body generate more heat, hence burn more calories. Tensing all the muscles in the chest(wouldn't really recommend this though) or legs, while holding the weight out would improve the energy burn also. Those would be more of a strength training and toning options though. For sheer calorie burning, swimming would probably be the best, as it involves more muscles at cooler temperatures and with higher cardiovascular requirements. Hope that helped.... > You are probably right. > One can simply do a qualitative assessment of the breathing involved--no [quoted text clipped - 3 lines] > temperature? > Or is it simple physics? :) Simple physiology, the body will try to maintain it's homeopathic temperature. Thats why you shiver when you are too cold, or sweat when you are too hot. > Bear in mind that if the muscle temperature itself gets cool, the enzymes > (meaning actin/myosin) do not function optimally, which is why some [quoted text clipped - 56 lines] > > Hope that helped....
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