Neckties and cerebrovascular reactivity in young healthy males: a pilot randomised crossover trial.

Stroke Res Treat · 2010 · PMC2976510 · PMID 21076611

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a nonsignificant trendno p-value reported

Comparing older (age > 30 years; n = 20) and younger volunteers revealed a nonsignificant trend towards reduction in cerebrovascular reactivity (difference 0.07; 95% CI: −0.25 to 0.13) between the groups.

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