A one-year digital physical activity intervention showed no meaningful effects on depression, anxiety, or perceived cognitive function in cancer survivors in intent-to-treat models, though post-hoc findings suggested reduced fear of cancer recurrence among compliant survivors with elevated baseline FCR.
The digital physical activity intervention was not effective in improving depression, anxiety, cognitive function, or fear of cancer recurrence in intent-to-treat analyses.
Among compliant participants with high baseline fear of cancer recurrence (FCR), engaging with the PA website intervention led to a significant reduction in FCR throughout the trial duration.
Evidence supporting the benefits of digital physical activity interventions on cognitive function, anxiety, and depression among cancer survivors is inconsistent, with very few studies examining fear of cancer recurrence.
The study population was predominantly female cancer survivors with a mean age of 62 years.
This research examined whether a one-year online physical activity program could improve mental and cognitive health in cancer survivors. Researchers randomly assigned 415 cancer survivors (mostly women, average age 62) to either an interactive physical activity website or a flexibility-focused control website, and measured their anxiety, depression, fear of cancer recurrence, and perceived thinking and memory abilities at the start of the study and at 3, 6, and 12 months. When looking at all participants regardless of how well they followed the program, the physical activity website did not produce meaningful improvements in any of the four outcomes compared to the control group. However, when the researchers looked more closely at participants who consistently used the website and who had high levels of fear of cancer reccoming at the start of the study, they found that this subgroup did show a notable reduction in fear of recurrence over the course of the year. Fear of cancer recurrence scores dropped from about 23.8 at the start to about 19.2 by 12 months in this compliant, high-baseline-FCR group. This finding came from additional analyses that were not part of the original study plan, so the authors caution that it needs to be confirmed in future studies designed specifically to test this question. This research suggests that broad digital physical activity programs may not universally improve mental or cognitive health outcomes for all cancer survivors, but there may be specific groups — particularly those most distressed about their cancer returning — who could benefit if they actively engage with such programs. The results highlight the importance of identifying which survivors are most likely to respond to digital health interventions and of ensuring participants actually use the tools provided to them.
Upload your bloodwork. We'll cross-reference your results against this study and 4,700 others.
Upload Your LabsChiang K, Masters M, Whalen S, Donzella S, Bates-Fraser L, Peoples A, et al.. (2026). The Impact of a Physical Activity Intervention on Cognitive and Mental Health Outcomes in Cancer Survivors.. Psycho-oncology. https://doi.org/10.1002/pon.70588