A novel long term short interval physical activity regime improves body composition in mice

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Abstract

Background: Exercise training (ET) and physical activity (PA) offer obvious health benefits in regular participants. In pre-clinical animal models, treadmills and running wheels are the models of choice for intervention studies using ET and PA. However, the frequency and duration necessary for positive effects on health are not completely understood. We investigated the impact of short duration voluntary wheel running on body composition in FVB × C57BL/6F1 hybrid mice over 22weeks. Mice were randomized and given access to voluntary wheel running (N=6) or locked wheels (N=5) for 1hour per night during the dark cycle, 5days per week. Finding. Average weekly running distance was generally cyclic in nature over the 22weeks but did not change significantly from week to week, except for a difference between week 3 and week 9 (P=0.05). Daily running distances ranged from 0.78km to 1.45km. Compared with non-runners, runners demonstrated significantly lower relative fat mass (9.98±0.56% vs. 14.91±1.47%, P=0.0067) and significantly higher relative lean mass (79.18±0.65% vs. 75.41±1.28%, P=0.019). No differences were observed with respect to glucose metabolism. Conclusion: Voluntary wheel running for one hour a day five days a week over a five month period improved body composition in young adult mice. This repetitive short interval exercise regime should be a useful model to investigate the effects of structured moderate intensity physical activity on physiological performance and chronic disease conditions in mice. © 2013 Goh and Ladiges; licensee BioMed Central Ltd.

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APA

Goh, J., & Ladiges, W. C. (2013). A novel long term short interval physical activity regime improves body composition in mice. BMC Research Notes, 6(1). https://doi.org/10.1186/1756-0500-6-66

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