Cardiovascular autonomic nervous system tests: reference values in young people (15–19 years) and influence of age and gender

Tonhajzerová, Ingrid; Javorka, K; Javorka, Michal; Petraskova, M

doi:10.1046/j.1475-097x.2002.00449.x

Cited by 16 publications

(7 citation statements)

References 18 publications

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“…Although previous studies investigated spectral analysis of HRV in response to the PCM [12,13] and Tulppo et al [10] previously reported the behavior of the alpha-1 during the passive tilt test, it is not clear the responses of the fractal analysis of HRV in the active PCM. In addition, the knowledge of physiological responses induced by autonomic tests is relevant to provide further information regarding autonomic cardiac regulation and autonomic dysfunction diagnosis [11].…”

Section: Introductionmentioning

confidence: 99%

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Fractal correlation property of heart rate variability in response to the postural change maneuver in healthy women

Souza¹,

Cisternas²,

Abreu³

et al. 2014

Int Arch Med

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BackgroundWe evaluated the effects of the PCM on the fractal analysis of the HRV in healthy womenMethodWe evaluated healthy women between 18 and 30 years old. HRV was analyzed in the time (SDNN, RMSSD, NN50 and pNN50) and frequency (LF, HF and LF/HF ratio) domains as well as short and long-term fractal exponents (alpha-1 and alpha-2) of the detrended fluctuation analysis (DFA). HRV was recorded at rest for ten minutes at seated rest and then the women quickly stood up from a seated position in up to three seconds and remained standing for 15 minutes. HRV was recorded at the following time: rest, 0–5 min, 5–10 min and 10–15 min during standing.ResultsWe observed decrease (p < 0.05) in the time-domain indices of HRV between seated and 10–15 minutes after the volunteer stood up. The LF (ms2) and HF (ms2) indices were also reduced (p < 0.05) at 10–15 minutes after the volunteer stood up compared to seated while the LF (nu) was increased at 5–10 min and 10–15 min (p < 0.05). The short-term alpha-1 exponent was increased (p < 0.05) at all moments investigated compared to seated. Increase in the properties of short-term fractal correlations of heart rate dynamics accompanied by a decrease in the parasympathetic modulation and global HRV was observed in response to the postural change maneuver.ConclusionWe suggest that fractal analysis of HRV is more sensitive than frequency and time-domain analysis of HRV during the postural change maneuver.

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Section: Introductionmentioning

confidence: 99%

“…The responses caused by the passive orthostatic test are well documented in the literature [12,13]. However, the PCM performed from seated to standing is not well understood regarding the responses of the fractal exponents.…”

Section: Introductionmentioning

confidence: 99%

Fractal correlation property of heart rate variability in response to the postural change maneuver in healthy women

Souza¹,

Cisternas²,

Abreu³

et al. 2014

Int Arch Med

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“…The result of deep breathing test was expressed as I/E and CVrr parameters. Measured parameters were compared with reference values for appropriate age and sex [4]. …”

Section: Methodsmentioning

confidence: 99%

Cough reflex sensitivity in adolescents with diabetic autonomic neuropathy

et al. 2009

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ObjectiveDiabetic autonomic neuropathy (DAN) is one of the chronic complications of diabetes mellitus which can involve one or more organ systems. DAN without apparent symptoms is more often in childhood and adolescence. While heart rate variability (HRV) and Ewing's battery of cardiovascular tests are regarded as a gold standard for the diagnosis of DAN, the examination of cough reflex sensitivity (CRS) is another possibility. The aim of this study was to compare HRV and CRS in children with diabetes mellitus.Materials and methodsSixty one patients (37 girls, 24 boys) aged 15-19 suffering from diabetes mellitus type 1 completed the study. Based on HRV, patients were divided into 2 groups - with DAN (n = 25) and without DAN (n = 32), 4 patients were excluded because of ambiguous results. CRS was studied in each patient by inhalation of gradually increasing concentration of capsaicin.ResultsSubjects with DAN required a significantly higher concentration of capsaicin needed to evoke 2 coughs (median 625 μmol/l, IQR 68.4-625.0 μmol/l vs. median 29.3 μmol/l, IQR 9.8-156.3 μmol/l, P < 0.001) and 5 coughs (median 2500.0 μmol/l, IQR 1250.0-2500.0 μmol/l vs. median 312.5 μmol/l, IQR 117.2-625.0 μmol/l, P < 0.001) compared with those without DAN. Moreover, a strong negative correlation between HRV and CRS was established.ConclusionDiabetes mellitus lowers the cough response. Cough reflex sensitivity appears to be another sensitive method for the evaluation of DAN in diabetes.

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“…A systematic review summarized that HRV values are typically higher in younger adult participants with emphasis on the necessity of HRV standard values for individual age periods74. Processes responsible for age-related influences could involve maturation of central brain regions, changes in neurotransmitters, growth of the heart, receptor's level (sensitivity and density) and other unknown mechanisms7576. It seems that the developmental process is important for RSA understanding in the emotional and cognitive regulation at the different age periods.…”

Section: Introductionmentioning

confidence: 99%

Respiratory sinus arrhythmia as a non-invasive index of ‘brain-heart’ interaction in stress

Tonhajzerová¹,

Mestanik²,

Mestanikova³

et al. 2016

Indian Journal of Medical Research

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Respiratory sinus arrhythmia (RSA) is accepted as a peripheral marker of cardiac-linked parasympathetic regulation. According to polyvagal theory, the RSA is also considered as the index of emotion regulation. The neurovisceral integration model posits that parasympathetic modulation of the heart marked by RSA is related to complex nervous regulation associated with emotional and cognitive processing. From this perspective, high resting RSA amplitude associated with a greater withdrawal during stressors and subsequent recovery could represent a flexible and adaptive physiological response system to a challenge. Conversely, low resting RSA accompanied by an inadequate reactivity to stress might reflect maladaptive regulatory mechanisms. The RSA reactivity is different with various types of stressors: while the RSA decreases to cognitive tasks indicating a vagal withdrawal, the RSA magnitude increases to emotional challenge indicating an effective cognitive processing of emotional stimuli. The RSA reactivity to stress could have important implications for several mental disorders, e.g. depressive or anxiety disorder. It seems that the study of the RSA, as a non-invasive index of ‘brain-heart’ communication, could provide important information on the pathway linked to mental and physical health.

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Cardiovascular autonomic nervous system tests: reference values in young people (15–19 years) and influence of age and gender

Cited by 16 publications

References 18 publications

Fractal correlation property of heart rate variability in response to the postural change maneuver in healthy women

Fractal correlation property of heart rate variability in response to the postural change maneuver in healthy women

Cough reflex sensitivity in adolescents with diabetic autonomic neuropathy

Respiratory sinus arrhythmia as a non-invasive index of ‘brain-heart’ interaction in stress

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