A digital biomarker derived from cranial accelerometry is noninvasive, easy to use, and promising for return-to-play decisions in sports.
Headpulse analysis, which measures micromovements of the head following cardiac contraction, detects 90% of concussions within 14 days, a new study shows., most organized sports teams use concussion protocols that determine return to play, but objective measures of concussive injury and definitive recovery are an unmet need in sports-related concussion.
The study used a noninvasive, battery-powered device attached to a headband that measures cardiac output forces directed toward the head; the resulting waveform is termed"headpulse." The analysis, which included concussed and nonconcussed high-level amateur athletes from an Australian football league, was carried out in two phases: the first, with a cohort of 32, was to confirm feasibility, and the second, with a cohort of 70, to validate findings and explore the association of physical activity with headpulse patterns.
scores above 2 after physical activity up to 8 days following concussion; however, the association between headpulse and activity, including exercise, requires further study, said the authors.Objective biomarkers will ultimately support personalized return-to-play protocols, minimizing risk of subsequent concussive events while preserving the spirit and benefits of sport, the authors wrote.
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