The Claim

In patients with heart failure with preserved ejection fraction, a 12-month program of combined endurance and resistance exercise training improves NYHA functional class, with an odds ratio of 7.77 (95% CI 3.73–16.21) compared with usual care at 12 months; however, this result came from a secondary endpoint in a randomized trial and should be considered exploratory.

Source: Combined endurance and resistance exercise training in heart failure with preserved ejection fraction: a randomized controlled trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
90score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

In a randomized trial, a 12-month program of combined endurance and resistance exercise improved NYHA functional class in patients with heart failure with preserved ejection fraction. The odds of improvement were 7.77 times higher than with usual care. Because this was a secondary endpoint, the finding is exploratory.

See the scientific wording

A 12-month program of combined endurance and resistance exercise training is likely to improve New York Heart Association (NYHA) functional class in patients with heart failure with preserved ejection fraction, with odds of improvement 7.77 times higher (95% CI 3.73–16.21) compared to usual care at 12 months. This substantial symptomatic benefit was observed in a randomized setting, although as a secondary endpoint it should be considered exploratory.

Why this might work

Exercise training changes the muscles to take in more oxygen and get stronger. This helps the body do more before getting tired, so everyday activities become easier and patients feel less breathless.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Combined endurance and resistance exercise training in heart failure with preserved ejection fraction: a randomized controlled trial

    This study tested exercise training in heart failure patients and found they were about 7.8 times more likely to have improved heart failure symptoms compared to those not exercising.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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