Talk:Specific dynamic action

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Evidence for exercise increasing TEF[edit]

The medical evidence clearly shows increased TEF due to exercise. The cited source's abstract can be found by a quick google search of the title. A further quick journal search found Role of Sympathetic Neural Activation in Age- and Habitual Exercise-Related Differences in the Thermic Effect of Food by Jones et al which states in part "Our findings of a greater TEF in the habitually physically active group are consistent with previous observations in both young [43] and middle-aged and older [3] healthy men." It goes on to posit a mechanism, but I don't think I can paste much more here due to copyright. That abstract is also available here. In the future please don't remove directly cited facts, just ask on the talk page. - Taxman Talk 12:46, 1 January 2006 (UTC)

It would be valuable to move these to the reference/external links area. Also, I would like to discuss the results of this study and if they really do prove the hypotheses. From what I can see, an increase in oxygen consumption mentioned in the first study doesn't mean an increased thermic effect, as in, it takes more energy to digest the same amount of calories. All it sounds like, is that more energy is being used by the body.
In the second abstract, in citing that the thermic effect of food has increased in the old group that exercised, it does not clearly state what they were measuring to gauge the TEF. From that I can only guess that they take an increase in metabolism to mean an increase in TEF. I suppose it is sensible that when more energy must be burnt in less time, it might become less efficient, but such a hypothesis needs support. Furthermore, it seems a bit inconsistant that the elderly would be able to more efficiently digest their food than the young. It may just be a difference in food intake with metabolism. Tyciol 19:24, 4 October 2006 (UTC)
Well the articles really didn't even discuss any controversy with the claims. At this point the article states what the cited sources report, so if you disagree, you'd have to do the research with better sources that explain the discrepancy. - Taxman Talk 16:34, 20 October 2006 (UTC)


The phrase "specific dynamic action (SDA)" is much more frequently used in the scientific literature than is TEF (see Steve Secor's 2009 review). The article's name should be changed to reflect this. —Preceding unsigned comment added by (talk) 12:02, 13 July 2009 (UTC)

Word missing?[edit]

This sentence doesn't really make sense to me: "TEF has been described as the energy used in the distribution of nutrients and metabolic processes in the liver,[6] but a hepatectomized animal shows no signs of TEF" Why "but"? Isn't the elimination of TEP what would be expected from hepatectomy if liver processes were responsible?Kyle MoJo (talk) 08:03, 3 May 2019 (UTC)

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