Housing temperature influences exercise training adaptations in mice

Steffen H. Raun, Carlos Henriquez Olguín, Iuliia Karavaeva, Mona Ali, Lisbeth L. V. Møller, Witold Kot, Josué L. Castro Mejía, Dennis Sandris Nielsen, Zach Gerhart-Hines, Erik A. Richter, and Lykke Sylow

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Jun 12, 2019
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Received Date: 23rd May 19

Exercise training is a powerful means to combat metabolic pathologies. Mice are extensively used to describe the benefits of exercise, but mild cold stress induced by housing temperatures may confound translation to humans. Thermoneutral housing is a strategy to make mice more metabolically similar to humans but its effects on exercise adaptations are unknown. Using voluntary wheel running, we  show that thermoneutral housing blunted exercise-induced improvements in insulin action in muscle and adipose tissue. Moreover, thermoneutrality reduced the effects of training on energy expenditure, body composition, muscle and adipose tissue protein expressions, and the gut microbiome. The majority of these thermoneutral-dependent training adaptations could not be ascribed to a lower voluntary running volume. Thus, we conclude that organismal adaptations to exercise training in mice critically depend upon housing temperature. Our findings underscore the importance of housing temperature as an important parameter in the design and interpretation of murine exercise studies.

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This is an abstract of a preprint hosted on an independent third party site. It has not been peer reviewed but is currently under consideration at Nature Communications.

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Nature Communications

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