Correlation between heart rate variability and pulmonar function adjusted by confounding factors in healthy adults

May Silveira Bianchim, Evandro F Sperandio, C. S. Martinhao, A C Matheus, V T Lauria, R P da Silva, R C Spadari, ART Gagliardi, RL Arantes, M Romiti, Victor Z Dourado

Research output: Contribution to journalArticlepeer-review

Abstract

The autonomic nervous system maintains homeostasis, which is the state of balance in the body. That balance can be determined simply and noninvasively by evaluating heart rate variability (HRV). However, independently of autonomic control of the heart, HRV can be influenced by other factors, such as respiratory parameters. Little is known about the relationship between HRV and spirometric indices. In this study, our objective was to determine whether HRV correlates with spirometric indices in adults without cardiopulmonary disease, considering the main confounders (e.g., smoking and physical inactivity). In a sample of 119 asymptomatic adults (age 20-80 years), we evaluated forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1). We evaluated resting HRV indices within a 5-min window in the middle of a 10-min recording period, thereafter analyzing time and frequency domains. To evaluate daily physical activity, we instructed participants to use a triaxial accelerometer for 7 days. Physical inactivity was defined as
Original languageEnglish
Article number49034435
JournalBrazilian Journal of Medical and Biological Research
Volume49
Issue number3
DOIs
Publication statusPublished - 2 Feb 2016
Externally publishedYes

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