Geometric indexes of heart rate variability in healthy individuals exposed to long-term air pollution

Oliveira, Juliana Regis da Costa e; Base, Luis Henrique; Maia, Laura Cristina Pereira; Antão, Jennifer Yohanna Ferreira Ferreira de Lima; Abreu, Luíz Carlos de; Oliveira, Fernando Roberto de; Vanderlei, Luiz Carlos Marques; Filho, Celso Ferreira; Ferreira, Celso

doi:10.1007/s11356-019-06965-3

Cited by 7 publications

(6 citation statements)

References 24 publications

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“…Other studies have also reported a reduction in cardiac vagal tone in individuals exposed to pollution, but they did not carry out an analysis by sex, which makes it difficult to make a comparison with the findings of the present study. 8,20 As previously stated, we observed different HRV between sexes and, therefore, men and women may suffer different effects of the long-term exposure to air pollution on the ANS. This finding may guide future studies regarding the association among these variables.…”

Section: Discussionsupporting

confidence: 65%

“…18,25 mechanisms has a high resting HRV, characterized by a parasympathetic predominance. 8,19,20 However, some cardiac conditions (e.g., conduction disturbances and atrial fibrillation) can also induce a high HRV. 19 Thus, the research hypothesis is that individuals exposed to low concentrations of air pollution have better cardiac autonomic modulation compared to those exposed to high concentrations, and that women have better cardiac autonomic control than men.…”

Section: Classification Of Locations Regarding Air Qualitymentioning

confidence: 99%

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Impact of Air Pollutant on Heart Rate Variability in Healthy Young Adults

Melinski¹,

Catai²,

Moura³

et al. 2022

International Journal of Cardiovascular Sciences

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Background: Air pollution and sex independently affect cardiac autonomic control, which can be assessed by heart rate variability (HRV). The research hypothesis is that individuals exposed to low concentrations of pollution have higher cardiac autonomic modulation compared to those exposed to high concentrations and that women have better cardiac autonomic control than men. Objective:To analyze the impact of exposure to air pollutants, specifically smoke, and sex on HRV in healthy young people exposed to different concentrations of pollution over an average period of 22 years. Methods:From April to September 2011, 36 participants of both sexes (20-30 years old) were selected, grouped by levels of air pollution exposure according to indices provided by the Environmental Company of São Paulo State. The R-R intervals (R-Ri) of the electrocardiogram were captured using a heart rate monitor during supine rest. HRV was analyzed by spectral analysis and conditional entropy. The Queen´s College step test was used to characterize functional capacity. A between-group comparison was performed using the two-way ANOVA statistical test (post hoc Tukey) and p<0.05.Results: Significant differences were found in mean R-Ri (p<0.01) and cardiac parasympathetic modulation between sexes in the same city (p=0.02) and between groups exposed to different air pollution concentrations (p<0.01). Conclusion:Our results suggest that long-term exposure to air pollutants, specifically smoke, has an unfavorable impact on HRV, with reduced cardiac vagal autonomic modulation in healthy young adults, especially females.

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Section: Discussionsupporting

confidence: 65%

Section: Classification Of Locations Regarding Air Qualitymentioning

confidence: 99%

Impact of Air Pollutant on Heart Rate Variability in Healthy Young Adults

Melinski¹,

Catai²,

Moura³

et al. 2022

International Journal of Cardiovascular Sciences

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“…To analyze HRV using a non-linear method, we used the Poincaré plot (components SD1, SD2, and SD2/SD1 ratio), which is a quantitative method of analysis, based on changes in sympathetic or parasympathetic modulation of heart rate on subsequent intervals, without requiring the property of stationarity of the data [ 46 ]. The SD1 index refers to the short-term standard deviation of instantaneous beat-to-beat variability, and is thus a measure of rapid changes in R-R intervals and with effects on the parasympathetic nervous system.…”

Section: Methodsmentioning

confidence: 99%

Cardiac autonomic modulation in response to postural transition during a virtual reality task in individuals with spinal cord injury: A cross-sectional study

Papa

Menezes²,

Moraes³

et al. 2023

PLoS ONE

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Purpose The postural transition from sitting to standing is a moment of dysautonomic occurrence in individuals with Spinal Cord Injury (SCI). Different tools can be used to minimize this event, such as virtual reality. Thus, we aimed to analyze cardiac autonomic modulation in individuals with SCI during postural transition from the sitting to orthostatism position using a cognitive virtual reality (VR) task. Methods Individuals with and without SCI were positioned on the Easy Stand® device, sitting at rest, at 0° considering the angle between the seat and the floor, elevation at 45°, and orthostatism at 90°, for 5 minutes in each position. Heart rate variability (HRV) measures of sympathovagal balance were collected (heart rate receiver: Polar V800). The groups were subdivided into two groups, one that performed VR as an intervention during the postural angle changes and another group that did not perform VR. Results We evaluated 76 individuals, 40 with a medical diagnosis of SCI and 36 who composed the able-bodied control group without SCI, matched by age and sex. The HRV results showed that the SCI group who performed the task in VR demonstrated no significant difference in parasympathetic activation and global variability between the sitting versus 90° positions. There was better sympathovagal balance in SCI and able-bodied control groups who performed the VR task between the sitting versus 90° positions. Conclusion The use of a VR task seems to contribute to better sympathovagal balance, with the potential to reduce dysautonomia during postural changes.

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“…Geometric methods of HRV included the triangle interpolation of the histogram of intervals NN (TINN). The TINN consists of measuring the base of a triangle determined by the method of least squares [ 30 ]. This index expresses the overall variability of RR intervals [ 27 ] and is affected more by low than high frequencies.…”

Section: Methodsmentioning

confidence: 99%

“…Non-linear measures for determining HRV indices included the Poincaré plot. In addition, SD1 and SD2 were analyzed by calculating the standard deviations of distances from RR intervals [ 30 ]. SD1 is reported to be sensitive to parasympathetic nervous system activity, while SD2 reflects overall HRV and is sensitive to both sympathetic and parasympathetic tones [ 31 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of a Combined Intradialytic Exercise Training Program and Music on Cardiac Autonomic Nervous System Activity in Hemodialysis Patients

Mitsiou

Dimitros

Roumeliotis

et al. 2022

Life

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This study aimed to examine the effect of an intradialytic exercise program in combination with music on heart rate variability (HRV) indices and functional capacity in patients on maintenance hemodialysis (HD). Methods: Forty HD patients were randomized to four training groups for six months: the combined music and exercise group (Group A), the exercise group (Group B), the music group (Group C), and the control group (Group D). At baseline and after 6 months, all participants underwent both short- (for 30 min) and long- (for 24 h) term measurements of HRV and functional capacity assessment with a 6 min walking test (6MWT). Patients of groups A and C listened to preferred music. Results: Long-term HRV analysis showed that standard deviation of all normal-to-normal RR intervals (SDNN) and the square root of the mean squared differences of successive RR intervals (rMSSD) were significantly higher at the end of the study in groups A (by 13.2% and 47.3%), B (by 15.1% and 50%), and C (by 9.0% and 30.1%), compared to group D (p < 0.05). Values of rMSSD and percentage of RR intervals differing by more than 50 ms from the preceding RR interval (pNN50) were elevated in groups A (by 35.6% and 142.9%), B (by 36.1% and 75%), and C (by 15.2% and 28.6%), compared to baseline measurements (p < 0.05). Also, pNN50 was increased in group A compared to groups B (by 21.4%), C (by 88.9%), and D (by 142.9%) (p < 0.05). Similar results were noted by short-term HRV analysis. Functional capacity was improved at the end of the 6-month study in groups A (by 20.3% and 25.7%) and B (by 15.8% and 21.1%) compared to groups C and D (p < 0.05). Conclusions: Intradialytic exercise combined with music-listening can improve the functional capacity and cardiac autonomic nervous system activity in hemodialysis patients.

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Geometric indexes of heart rate variability in healthy individuals exposed to long-term air pollution

Cited by 7 publications

References 24 publications

Impact of Air Pollutant on Heart Rate Variability in Healthy Young Adults

Impact of Air Pollutant on Heart Rate Variability in Healthy Young Adults

Cardiac autonomic modulation in response to postural transition during a virtual reality task in individuals with spinal cord injury: A cross-sectional study

Effects of a Combined Intradialytic Exercise Training Program and Music on Cardiac Autonomic Nervous System Activity in Hemodialysis Patients

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