Observational associations describe patterns in study populations—they do not guarantee the same result for any one person.
Research question
How does muscle mitochondrial capacity and efficiency, aerobic capacity, and preferred walking speed relate to the outcomes measured in this study?
Participants
37 older adults (mean age 78)
Follow-up
See primary publication for follow-up duration.
Findings
Lower mitochondrial capacity and efficiency were associated with lower aerobic capacity and slower preferred walking speed.
What this means for your lifestyle
Leg muscle energy capacity traveled with the ability to walk at a comfortable pace in this group. The study did not follow participants for survival.
Limitations
Small cross-sectional sample; not every participant completed every measurement.
Original research
Summary reviewed October 21, 2026
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