Related Experiment Video
Updated: Nov 16, 2025
10:32
Assessing Functional Performance in the Mdx Mouse Model
Published on: March 27, 2014
33.2K
Age of Peak Performance Differs by Functional Task in Mice Tracked Over 2 Years
Dallin Tavoian1, Nicholas R Lozier2, Sonsoles de Lacalle3
1Program in Translational Biomedical Sciences, Ohio University, Athens, USA.
Summary
Understanding mouse aging is crucial for human health research. This study reveals that physical performance and body composition change non-linearly with age, highlighting the need for intermediate time points in mouse studies.
Area of Science:
- Gerontology
- Animal Models
- Translational Research
Background:
- Mouse models are vital for preclinical intervention testing.
- Biological differences between mice and humans impact outcome translatability.
- Age-related changes in mouse physical function are often oversimplified.
Purpose of the Study:
- To characterize age-related changes in mouse physical function and body composition.
- To determine the optimal time points for assessing physical performance in mice.
- To improve the translatability of mouse study findings to human aging.
Main Methods:
- Longitudinal assessment of forelimb and hindlimb grip strength, balance, and coordination.
- Monitoring of body composition (lean and fat mass) over time.
- Data collection from 43 mice at multiple time points between 4 and 24 months of age.
Main Results:
- Maximal forelimb grip strength occurred at 4 months; maximal hindlimb grip strength at 15 months.
- Balance performance remained stable until 15 months, declining significantly at 18 months.
- Lean and fat mass peaked at 18 months before decreasing.
Conclusions:
- Age-related physical function changes in mice are non-linear.
- Intermediate time points are essential for accurate evaluation of mouse physical function.
- This data aids in refining mouse models for human intervention studies.
