Objectively Measured Sitting and Standing in Workers: Cross-Sectional Relationship with Autonomic Cardiac Modulation

International Journal of Environmental Research and Public Health
David M HallmanAndreas Holtermann

Abstract

Excessive sitting and standing are proposed risk factors for cardiovascular diseases (CVDs), possibly due to autonomic imbalance. This study examines the association of objectively measured sitting and standing with nocturnal autonomic cardiac modulation. The cross-sectional study examined 490 blue-collar workers in three Danish occupational sectors. Sitting and standing during work and leisure were assessed during 1⁻5 days using accelerometers. Heart rate (HR) and heart rate variability (HRV) were obtained during nocturnal sleep as markers of resting autonomic modulation. The associations of sitting and standing still (h/day) with HR and HRV were assessed with linear regression models, adjusted for age, gender, body mass index, smoking, and physical activity. More sitting time during leisure was associated with elevated HR (p = 0.02), and showed a trend towards reduced HRV. More standing time at work was associated with lower HR (p = 0.02), and with increased parasympathetic indices of HRV (root mean squared successive differences of R-R intervals p = 0.05; high-frequency power p = 0.07). These findings, while cross-sectional and restricted to blue-collar workers, suggest that sitting at leisure is detrimental to autonomic car...Continue Reading

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Citations

Jan 8, 2021·BMJ Open Sport & Exercise Medicine·Matthew L StevensEmmanuel Stamatakis
Jul 17, 2021·Scandinavian Journal of Medicine & Science in Sports·Gustavo O SilvaRaphael M Ritti-Dias
Aug 28, 2021·International Journal of Environmental Research and Public Health·Abdullah Bandar AlansareBethany Barone Gibbs
Oct 15, 2021·Journal of Women's Health·Abdullah Bandar AlansareClaudia Holzman

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