Safety of cardiorespiratory and muscle fitness assessment in two children with leukemia during early chemotherapy.
Virginie Aspirot-Buron, Charles Sèbiyo Batcho, Michèle Bisson and 4 others
PMID 40576496WHAT IT FOUND
Two children undergoing chemotherapy for leukemia safely completed maximal exercise and strength tests during early treatment.
No adverse effects occurred, and the testing did not disrupt their treatment schedule. This suggests rigorous physiological assessment is feasible early in therapy, though sample size is too small to confirm benefits.
Key findings
01Neither participant experienced serious adverse physiological symptoms or disturbances to their chemotherapy regimen related to the fitness tests.
02Both participants successfully completed the battery of tests without deleterious physiological consequences or negative impacts on their treatment.
03Physiological outcomes diverged: one participant improved in cardiorespiratory fitness and quality of life, while the other declined, potentially due to neuropathic pain and reduced activity.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The sample size of two participants is too small to draw general conclusions about safety or efficacy. There was no baseline measurement before chemotherapy started, so it is unclear how much decline or improvement occurred relative to pre-treatment status. The two participants were tested at different time points in their treatment cycles, making direct comparison difficult. Participants may not have reached true maximal effort due to pain or motivation, affecting the validity of the physiological data. Nutritional status and other confounding factors were not controlled.
Declared interests
The study was approved by the hospital's Ethics Committee. No specific funding sources or conflicts of interest were declared in the provided text.
The easy way to misread this
Do not interpret this as evidence that maximal exercise testing is safe for all children in early chemotherapy. With only two participants, the risk of adverse events cannot be accurately quantified. The divergent results also mean that testing may not yield useful physiological data if pain or fatigue limits effort.