Energy balance
High levels of physical activity preserve mitochondrial capacity and exercise efficiency in older adults, effectively negating the negative impacts of chronological aging on these metrics.
If you are an older adult, maintaining a high level of physical activity, particularly endurance exercise, is crucial for preserving mitochondrial health. This preservation directly supports better muscle quality, exercise efficiency, and physical performance, effectively counteracting many negative effects typically associated with aging. Focus on staying active rather than accepting decline as inevitable.
Older adults who maintain a high amount of physical activity have better mitochondrial capacity, similar to highly active younger adults, and this is related to their better muscle quality, exercise efficiency, and physical performance.
Why this rating
The study uses well-phenotyped cohorts, multiple direct measures of mitochondrial function (MRS, respirometry), and controls for confounders, though it is observational/cross-sectional in nature regarding the comparison of groups.
Source
Physical activity unveils the relationship between mitochondrial energetics, muscle quality, and physical function in older adults
Giovanna Distéfano et al. · Journal of Cachexia Sarcopenia and Muscle · 2018
DOI 10.1002/jcsm.12272
More from this paper
- Maximum mitochondrial capacity is directly related to muscle contractile performance and physical function in older adults, regardless of chronological age.Good
- Mitochondrial efficiency (P/O ratio) is positively related to exercise efficiency (Gross and Net Efficiency) in older adults, and both are reduced by physical inactivity.Good
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