FVB/NJ Mice Are a Useful Model for Examining Cardiac Adaptations to Treadmill Exercise.

Despite an apparent trend toward lower initial exercise capacity at night, we found no statistically significant differences between C57BL/6J mice exercised during the day or the night (Figures 3A,B ); however, FVB/NJ mice showed significantly lower levels of work performed at night (Figure 3B ).

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