When you're in a cool room, your saliva has more nitrite after drinking beetroot juice than when you're in a warm room.

Scientific Claim

Cool air exposure (20°C) increases salivary nitrite concentration in healthy young males, with salivary nitrite levels reaching 1,699 ± 1,228 nmol/min in cool conditions versus 1,103 ± 758 nmol/min in normothermic conditions after nitrate supplementation.

Original Statement

“Mean salivary [nitrite] between 1 and 3 h was higher in BR-Cool (1,699 ± 1,228#) versus BR-Norm (1,103 ± 758#) (P < 0.01, ηp2 = 0.67)”

From study:Nitrate ingestion blunts the increase in blood pressure during cool air exposure: a double-blind, placebo-controlled, randomized, crossover trial

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

definitive

Can make definitive causal claims

Assessment Explanation

The study design allows for causal inference about this specific comparison. The language accurately reflects the measured difference without overgeneralization.

Evidence from Studies

Supporting (1)

Nitrate ingestion blunts the increase in blood pressure during cool air exposure: a double-blind, placebo-controlled, randomized, crossover trial

Randomized Controlled Trial

Human

2024 Jun 1

Contradicting (0)

No contradicting evidence found

Source Study

Nitrate ingestion blunts the increase in blood pressure during cool air exposure: a double-blind, placebo-controlled, randomized, crossover trial

Score: 60

DOI: 10.1152/japplphysiol.00593.2023

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