Key result
Exposure to low ambient temperature significantly increased muscle nerve sympathetic activity (26.6 vs 20.3 bursts/min) and systolic blood pressure (131 vs 118 mmHg) in healthy subjects (P<0.001).
Why the study?
Does low ambient temperature increase muscle nerve sympathetic activity and blood pressure in healthy subjects?
Population
10 healthy subjects
Comparison
Exposure to cold inside a box used for… vs Initial rest at 22.7 +/- 0.3 degrees C and…
Authors
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Stable sympathetic activity and BP during initial cold exposure in healthy adults; leaves open relevance to cardiovascular disease states.
Does low ambient temperature increase muscle nerve sympathetic activity and blood pressure in healthy subjects?
Absolute Event Rate: 26.6% vs 20.3%
p-value: p=<0.001
Exposure to cold ambient temperatures increases muscle nerve sympathetic activity and elevates blood pressure in healthy humans.
Fagius et al. (1991) studied Healthy (n=10). Low ambient temperature vs. Initial rest at 22.7 degrees C was evaluated on Muscle nerve sympathetic activity (bursts min-1) (p=<0.001). Exposure to low ambient temperature significantly increased muscle nerve sympathetic activity (26.6 vs 20.3 bursts/min) and systolic blood pressure (131 vs 118 mmHg) in healthy subjects (P<0.001).
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