Energy Expenditure Downregulates In Response To Increased Activity

[ShirtTieFitness]

This study will interest anyone interested in the eat less move more hypothesis of weight regulation and manipulation . Specifically that moving more equates to an increased caloric burn and thus can be used as a tool for weight loss.

This study, undertaken on the Hadza tribe (a tribe with a diet consisting mainly of honey, lean meats and starch), outlines that energy expenditure can downregulate to compensate and prevent energy expenditure exceeding the bodies current and predictive energy reserves.

Hunter-Gatherer Energetics and Human Obesity

Western lifestyles differ markedly from those of our hunter-gatherer ancestors, and these differences in diet and activity level are often implicated in the global obesity pandemic. However, few physiological data for hunter-gatherer populations are available to test these models of obesity. In this study, we used the doubly-labeled water method to measure total daily energy expenditure (kCal/day) in Hadza hunter-gatherers to test whether foragers expend more energy each day than their Western counterparts. As expected, physical activity level, PAL, was greater among Hadza foragers than among Westerners. Nonetheless, average daily energy expenditure of traditional Hadza foragers was no different than that of Westerners after controlling for body size. The metabolic cost of walking (kcal kg−1 m−1) and resting (kcal kg−1 s−1) were also similar among Hadza and Western groups. The similarity in metabolic rates across a broad range of cultures challenges current models of obesity suggesting that Western lifestyles lead to decreased energy expenditure. We hypothesize that human daily energy expenditure may be an evolved physiological trait largely independent of cultural differences.

https://www.shirtandtiefitness.com/scientific-research-studies/

 

[haidut]

This study will interest anyone interested in the eat less move more hypothesis of weight regulation and manipulation . Specifically that moving more equates to an increased caloric burn and thus can be used as a tool for weight loss.

This study, undertaken on the Hadza tribe (a tribe with a diet consisting mainly of honey, lean meats and starch), outlines that energy expenditure can downregulate to compensate and prevent energy expenditure exceeding the bodies current and predictive energy reserves.

Hunter-Gatherer Energetics and Human Obesity

Western lifestyles differ markedly from those of our hunter-gatherer ancestors, and these differences in diet and activity level are often implicated in the global obesity pandemic. However, few physiological data for hunter-gatherer populations are available to test these models of obesity. In this study, we used the doubly-labeled water method to measure total daily energy expenditure (kCal/day) in Hadza hunter-gatherers to test whether foragers expend more energy each day than their Western counterparts. As expected, physical activity level, PAL, was greater among Hadza foragers than among Westerners. Nonetheless, average daily energy expenditure of traditional Hadza foragers was no different than that of Westerners after controlling for body size. The metabolic cost of walking (kcal kg−1 m−1) and resting (kcal kg−1 s−1) were also similar among Hadza and Western groups. The similarity in metabolic rates across a broad range of cultures challenges current models of obesity suggesting that Western lifestyles lead to decreased energy expenditure. We hypothesize that human daily energy expenditure may be an evolved physiological trait largely independent of cultural differences.

https://www.shirtandtiefitness.com/scientific-research-studies/

I think this should be a sticky. There has been so much backlash over that article that the Biggest Loser participants regained back all of their lost weight due to to dramatically lowered RMR as a result of the grueling "exercises" and fasting they had to endure. exercising yourself to leanness != health. In fact, I'd say it reliably preps you for either subsequent obesity or diabetes in the long run.