Functional Decline Precedes Cardiovascular Disease Events By Many Years

TL;DR

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A study published in JAMA Cardiology found that people who later experienced a cardiovascular event had worse measures of frailty, physical capacity and physical health years beforehand. Differences widened in the five years before events, though the observational study does not establish that functional decline causes cardiovascular disease or show that intervening on these measures prevents events.

Older adults who later experienced a cardiovascular event had worse measures of physical function and aging years before it occurred, according to a study published online Sept. 23 in JAMA Cardiology. In the analysis of 12,015 participants, differences from matched controls widened markedly during the five years before an event.

Aung Zaw Zaw Phyo of Monash University in Melbourne and colleagues analyzed data from the Aspirin in Reducing Events in the Elderly cohort. The nested case-control study included 2,403 people who experienced a cardiovascular event and 9,612 matched controls. Researchers examined how functional measures changed in the years preceding the event.

Those who later had an event had consistently higher frailty, lower intrinsic capacity and poorer physical health-related quality of life than controls, with differences visible up to a decade before the event. In the five years immediately preceding it, the groups’ trajectories diverged more markedly. The researchers reported faster increases in frailty and steeper declines in intrinsic capacity and physical quality of life among the cases.

The pattern was broadly similar across components of the cardiovascular disease composite, but the timing differed. Functional measures began diverging at least 10 years before heart failure and fatal coronary heart disease; the report said divergence emerged later for myocardial infarction and stroke. The study describes associations over time, not proof that functional decline caused the events.

A Longer Window for Clinical Review

The findings matter because cardiovascular risk may be accompanied by gradual changes in day-to-day physical functioning well before a major event is diagnosed. If clinicians observe worsening frailty or physical capacity, those patterns could provide a reason to review a patient’s broader health and cardiovascular risk, rather than focusing only on a single test or symptom.

The authors say the changes may reflect progressive multisystem aging and suggest a prolonged window for closer evaluation and early intervention. That is a potential clinical implication, not a tested result: this analysis did not establish that screening for these measures or treating functional decline would prevent heart attacks, strokes, heart failure or deaths. The findings may be most useful as a prompt for further research into how functional assessments could complement existing care.

How Researchers Tracked Decline

The report, titled Multidimensional Aging Trajectories Preceding Cardiovascular Events, was published in JAMA Cardiology and analyzed participants in the Aspirin in Reducing Events in the Elderly cohort. Rather than looking only at health near the time of an event, the researchers compared changes in several dimensions of functioning across years before it occurred.

The measures included two approaches to frailty, intrinsic capacity and physical health-related quality of life. The study’s design matched each case with controls, allowing researchers to compare trajectories in people who did and did not experience an event. The source report does not describe this as a trial of a functional screening or treatment strategy; it is an analysis of observed data.

“Declines in functional aging markers were prominent before clinically apparent CVD.”

— Aung Zaw Zaw Phyo and colleagues, writing in JAMA Cardiology

What the Study Cannot Establish

The results show that functional decline was associated with later cardiovascular events; they do not show that the decline itself caused those events. The study also does not establish whether changes in frailty, intrinsic capacity or quality of life can accurately predict which individual will have an event, or whether acting on these measures improves outcomes.

The report provides no evidence that a particular functional threshold should trigger treatment, and it does not specify which clinical interventions might help. The available source summary also does not give detailed participant demographics or enough information to judge how directly the results apply beyond the cohort studied. These questions require further research before the findings can be translated into a specific screening recommendation.

Testing Measures in Clinical Care

The study authors point to closer clinical evaluation and early intervention as possible uses of the long period of decline they observed. The next step for research would be to test whether routinely measuring functional aging markers adds useful information to established cardiovascular assessments and whether a response to those findings can change health outcomes.

For now, the report offers evidence about the timing and association of changes, rather than a new clinical guideline. Further studies will need to clarify who should be assessed, how often, and what actions—if any—are effective when function worsens. People should discuss individual health concerns with a qualified health professional rather than treating these findings as a diagnosis or a personal prediction.

Key Questions

What did the study find?

People who later experienced a cardiovascular event had worse frailty, intrinsic capacity and physical health-related quality of life than matched controls years beforehand. The differences widened in the five years before the event.

How many people were included?

The analysis covered 12,015 participants: 2,403 who experienced a cardiovascular event and 9,612 matched controls, drawn from the Aspirin in Reducing Events in the Elderly cohort.

Does functional decline cause cardiovascular disease?

The study does not establish cause and effect. It found an association between worsening functional measures and later events, but cannot show that the decline caused them.

Does this mean functional tests can predict an individual event?

Not based on this report alone. It does not establish the accuracy of these measures for predicting an individual’s risk or set a threshold for clinical action.

When did the researchers see differences emerge?

Differences were visible up to a decade before cardiovascular events overall and widened markedly in the five years before them. For heart failure and fatal coronary heart disease, divergence was reported at least 10 years beforehand; it appeared later for heart attack and stroke.

Source: rss