Researchers measured blood pressure and nitrate/nitrite levels in blood and saliva 2.5 hours after giving women a nitrate-rich drink.
Scientific Claim
The study measured plasma and salivary nitrate/nitrite concentrations and blood pressure 2.5 hours after dietary nitrate administration.
Original Statement
“Following an overnight fast, plasma, saliva and tongue scraping samples were collected for measurement of nitrate/nitrite concentrations, oral nitrate-reductase (NaR) activity and microbiota profiling using 16S rRNA gene sequencing. Baseline BP was measured, followed by the administration of a single dose of dietary nitrate (400mg nitrate in 70mL beetroot juice). Post-nitrate intervention, plasma and salivary nitrate/nitrite concentrations and BP were determined 2.5 hours later.”
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 describes the measurement timing without making causal claims. The language 'were determined 2.5 hours later' appropriately describes the study procedure.