Dual-Task Predictors in Graduate Healthcare Students with Athletic Backgrounds.
Fernando Castillo, Brittani Freund, Ryan Hulla and 5 others
PMID 40756802WHAT IT FOUND
Concussion history did not predict worse dual-task performance or academic scores in 32 graduate students.
Unexpectedly, those with no reported concussion history had higher dual-task costs. More years in contact sports predicted lower undergraduate GPA, but the study was underpowered and relied on self-report.
Key findings
01Participants with no history of concussion were predicted to experience increased dual-task cost when performing memory/recall tasks while walking backward.
02More years of playing contact sports significantly predicted lower overall undergraduate GPA.
03The study was underpowered to detect small or borderline medium effect sizes due to the small sample size.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The sample was small (n=32) and recruited via convenience sampling, limiting generalizability. Post-hoc power analysis showed the study was underpowered to detect small or borderline medium effects. Concussion history and education status were based on self-report, which is subject to recall bias and underreporting. The visuospatial task required texting with spell-check disabled, a non-ecological condition that may have caused errors unrelated to cognitive impairment. Confounding variables such as mental health conditions (e.g., ADHD) were not controlled for. The high number of trials (33) may have introduced fatigue or learning effects.
Declared interests
No conflicts of interest or funding sources are reported in the text.
The easy way to misread this
Do not interpret the finding that students with no concussion history had higher dual-task costs as evidence that concussion is protective. The authors suggest this may be due to underreporting of concussions in the 'no history' group or the unnatural difficulty of the specific tasks used, rather than a true physiological effect.