The Claim
In a 3-year longitudinal study, older adults aged 70-85, regardless of mobility status (healthy or with mobility limitations), experienced a similar decline in leg extensor muscle power of approximately 8-9%, with no statistically significant difference between the groups.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Over three years, people aged 70 to 85 lost about 8-9% of the strength in the muscles that straighten their knees. This happened similarly for those who were healthy and those who already had trouble moving around, meaning both groups declined at about the same rate.
See the scientific wording
In a 3-year study of older adults aged 70-85, both healthy individuals and those with mobility limitations experienced a similar decline in leg extensor muscle power of approximately 8-9%, with no significant difference between groups.
As people get older, their leg muscles lose power. This happens because in healthy older people, the brain sends weaker and slower signals to the muscles, while in people with mobility problems, the muscles themselves become smaller and weaker. Both problems make it harder for muscles to contract quickly and forcefully, so overall power goes down. The result is that both groups lose about the same amount of muscle power over three years, even though the reasons are different.
What the research says
1 studyThe study found that both healthy older people and those with mobility issues lost about the same amount of leg muscle power over three years (around 8-9%), so the claim is correct.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.