Staying awake for up to a day and a half doesn't significantly affect the amount of blood the heart pumps with each beat in healthy men.

Scientific Claim

In 40 healthy men aged 31.2±6.3 years with BMI 24.6±2.6 kg/m², sleep deprivation for up to 32 hours is not associated with significant changes in stroke index (p=0.076).

Original Statement

“SI (mL/m2) 59.3±11.0 59.8±12.2 58.8±12.5 58.2±10.6 p=0.076”

From study:Hemodynamic, Autonomic, and Vascular Function Changes after Sleep Deprivation for 24, 28, and 32 Hours in Healthy Men

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

association

Can only show association/correlation

Assessment Explanation

The study design supports claims of no association when p>0.05. The language correctly states no significant change.

Evidence from Studies

Supporting (1)

Hemodynamic, Autonomic, and Vascular Function Changes after Sleep Deprivation for 24, 28, and 32 Hours in Healthy Men

Cohort Study

Human

2018 Nov

Contradicting (0)

No contradicting evidence found

Source Study

Hemodynamic, Autonomic, and Vascular Function Changes after Sleep Deprivation for 24, 28, and 32 Hours in Healthy Men

Score: 32

DOI: 10.3349/ymj.2018.59.9.1138

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