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Exercise Before and After Lymphoma Diagnosis May Improve Survival

The researchers noted that physical activity plays an important role in lymphoma survivorship, and the data may provide rationale for a clinical trial to evaluate exercise intervention in this patient population.
 
BY Kristie L. Kahl
PUBLISHED January 09, 2018
An increase in exercise among patients with lymphoma not only decreased the risk for death from all causes, but also for disease-specific mortality.

Previous studies have shown that increased physical activity improves quality of life among patients with cancer as well as survivors. However, limited data supports exercise and lymphoma-specific survival.

“As physicians, we recommend physical activity for all cancer survivors to improve overall quality of life,” Priyanka Pophali, M.B.B.S., a hematologist at Mayo Clinic in Rochester, said in a press release. “But we did not know if physical activity would have an impact on survival in lymphoma patients.”

In the observational study – presented at the American Society of Hematology annual meeting and exposition in Atlanta – Pophali and colleagues assessed how physical activity affected survival in all subtypes of patients with lymphoma, both before and after diagnosis.

Over 4,000 patients enrolled within nine months of their lymphoma diagnosis at the Mayo Clinic between 2002 and 2012. At enrollment, patients completed questionnaires about their usual level of mild, moderate and strenuous physical activity before diagnosis. The researchers continued to contact the participants to collect information on exposures and outcomes, and lastly, contacted them for a three-year follow-up.

All of this data was used to calculate a Godin Leisure Score Index (LSI) – a physical activity score which is a validated tool for measuring physical activity in oncology patients. The researchers used these scores to evaluate the association of physical activity with overall and lymphoma-specific survival.

The average LSI score was 28 at baseline and 25 at the three-year follow-up, with a median change of two points.

Patients who reported having higher levels of physical activity prior to their lymphoma diagnosis had better overall and lymphoma-specific survival compared with those who were less physically active in that timeframe. Similarly, patients who reported to have increased their level of physical activity following their diagnosis, and at the three-year follow-up, had superior survival outcomes.

At the three-year follow-up, patients were also asked about their perception of any change in their level of physical activity following their diagnosis compared to baseline. Patients who perceived that their level of physical activity had decreased at three years had worse overall and lymphoma-specific survival compared to those who did not report a change.

The researchers noted that physical activity plays an important role in lymphoma survivorship, and the data may provide rationale for a clinical trial to evaluate exercise intervention in this patient population.

“Our findings show that physical activity can have a positive impact on survival in lymphoma patients,” said Pophali. “Importantly, our study shows a survival benefit in patients who increase their level of physical activity. Therefore, since physical activity behaviors can be modified, physicians should counsel patients and survivors on the importance of physical activity and encourage them to maintain and, if possible, increase their level of physical activity.”
 
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