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Sickle Cell DiseaseAugust 2018Summary reviewed July 2026

Heart Function Problems Linked to Exercise Trouble in Sickle Cell Disease

Researchers tested 20 children and adults with sickle cell disease using heart imaging and exercise tests. Nearly all participants had reduced exercise capacity, and those with a heart pumping problem called diastolic dysfunction showed the greatest exercise limitations.

What the trial was testing

The trial enrolled 33 patients with sickle cell disease. The study was sponsored by Children's Hospital Medical Center, Cincinnati and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

Researchers followed patients through treatment and into recovery, tracking the outcomes that mattered most for the disease being studied.

What the results showed

94% of patients with sickle cell disease had reduced exercise capacity on testing.

Pediatric blood & cancer · 2018 · NCT02410811

These findings — that almost all sickle cell patients in the study showed lower-than-normal ability to exercise — were published in the Pediatric blood & cancer and represent the headline result of the study.

Researchers tracked outcomes across 33 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with sickle cell disease, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This was an early-stage study exploring why people with sickle cell disease often struggle with exercise. The findings suggest heart function testing might help identify who needs closer monitoring. Talk to your doctor if you experience unusual fatigue or shortness breath during activity.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.