Drinking beetroot juice doesn't change how blood flows through your skin when you're in a cool room.
Scientific Claim
Nitrate-rich beetroot juice supplementation does not significantly alter cutaneous vascular conductance during cool air exposure (20°C) in healthy young males, with no differences observed between nitrate-supplemented and placebo conditions.
Original Statement
“There were no differences between PL-Cool and BR-Cool at 1 h (dz = 1.03) or 2 h (dz = 0.32), but CVC was lower in PL-Cool versus BR-Cool at 3 h (dz = 2.75, P = 0.01, Table 3). There was a main effect of temperature (P = 0.01, ηp2 = 0.83) but no main effect for supplement (P > 0.05, ηp2 = 0.21) or supplement × temperature interaction effect (P > 0.05, ηp2 = 0.00) for CVC averaged between 1 and 3 h.”
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 lack of significant overall effect 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