After staying awake for a day, healthy men in their early 30s with average weight experience a small but noticeable rise in blood pressure that stays elevated for up to a day and a half.
Scientific Claim
In 40 healthy men aged 31.2±6.3 years with BMI 24.6±2.6 kg/m², 24 hours of sleep deprivation is associated with a 3.2 mmHg increase in systolic blood pressure and a 3.4 mmHg increase in diastolic blood pressure, with these changes maintained through 32 hours of sleep deprivation.
Original Statement
“ANOVA Friedman's test revealed a significant effect for time in relation to HR (χ2=26.04, df=5, p=0.000), systolic BP (χ2=35.98, df=5, p=0.000), diastolic BP (χ2=18.01, df=5, p=0.003), and mean BP (χ2=28.32, df=5, p=0.000).”
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 is a single-group cohort with repeated measures, which can demonstrate associations but not causation. The claim uses 'associated with' correctly.