作者
Seth W Holwerda, Megan E Gangwish, Rachel E Luehrs, Virginia R Nuckols, Gary L Pierce
发表日期
2022/5
期刊
The FASEB Journal
卷号
36
出版商
The Federation of American Societies for Experimental Biology
简介
Central obesity is associated with elevated adrenergic activity and arterial blood pressure (BP). Therefore, we tested the hypothesis that transduction of spontaneous muscle sympathetic nerve activity (MSNA) to BP, i.e., sympathetic transduction, would be augmented in central obesity (increased waist circumference) and positively related to resting BP. Young/middle‐age obese (n=14) or non‐obese (n=14) adults without hypertension (average ambulatory 24‐hr BP<130/80 mmHg) were included. MSNA (microneurography) and BP (finger cuff) were measured continuously for 10 min (supine) and bursts of MSNA were grouped into quartiles of burst clusters (1, 2, 3, 4+bursts) and burst amplitude. Beat‐to‐beat mean arterial pressure (MAP) was signal‐averaged over 10 cardiac cycles following each burst of MSNA. MSNA burst frequency was similar between obese and non‐obese (21±3vs.17±3 bursts/min, P=0.34 …