scholarly journals Z-Score Neurofeedback and Heart Rate Variability Training for Adults and Children with Symptoms of Attention-Deficit/Hyperactivity Disorder: A Retrospective Study

2019 ◽  
Vol 44 (4) ◽  
pp. 291-308 ◽  
Author(s):  
Kayleah M. Groeneveld ◽  
Anna M. Mennenga ◽  
Robert C. Heidelberg ◽  
Rachel E. Martin ◽  
Rachel K. Tittle ◽  
...  
Keyword(s):  
Heart Rate ◽  
Attention Deficit Hyperactivity Disorder ◽  
Heart Rate Variability ◽  
Retrospective Study ◽  
Attention Deficit ◽  
Z Score ◽  
Hyperactivity Disorder ◽  
Adults And Children

scholarly journals Heart Rate Variability in Children with Attention-Deficit/Hyperactivity Disorder: A Pilot Study

2016 ◽  
Vol 23 (2) ◽  
pp. 81-88 ◽  
Author(s):  
Malligurki Raghurama Rukmani ◽  
Shekhar P. Seshadri ◽  
Kandavel Thennarasu ◽  
Trichur R. Raju ◽  
Talakad N. Sathyaprabha
Keyword(s):  
Heart Rate ◽  
Attention Deficit Hyperactivity Disorder ◽  
Heart Rate Variability ◽  
Pilot Study ◽  
Attention Deficit ◽  
Hyperactivity Disorder

Symbolic dynamics of heart rate variability — a promising tool to investigate cardiac sympathovagal control in attention deficit/hyperactivity disorder (ADHD)?

2016 ◽  
Vol 94 (6) ◽  
pp. 579-587 ◽  
Author(s):  
Ingrid Tonhajzerova ◽  
Ivan Farsky ◽  
Michal Mestanik ◽  
Zuzana Visnovcova ◽  
Andrea Mestanikova ◽  
...  
Keyword(s):  
Heart Rate ◽  
Attention Deficit Hyperactivity Disorder ◽  
Heart Rate Variability ◽  
Attention Deficit ◽  
Symbolic Dynamics ◽  
Standing Position ◽  
Cardiac Biomarkers ◽  
Adhd Group ◽  
Hyperactivity Disorder ◽  
Promising Tool

We aimed to evaluate complex cardiac sympathovagal control in attention deficit/hyperactivity disorder (ADHD) by using heart rate variability (HRV) nonlinear analysis — symbolic dynamics. We examined 29 boys with untreated ADHD and 25 healthy boys (age 8–13 years). ADHD symptoms were evaluated by ADHD-RS-IV scale. ECG was recorded in 3 positions: baseline supine position, orthostasis, and clinostasis. Symbolic dynamics indices were used for the assessment of complex cardiac sympathovagal regulation: normalised complexity index (NCI), normalised unpredictability index (NUPI), and pattern classification measures (0V%, 1V%, 2LV%, 2UV%). The results showed that HRV complexity was significantly reduced at rest (NUPI) and during standing position (NCI, NUPI) in ADHD group compared to controls. Cardiac-linked sympathetic index 0V% was significantly higher during all posture positions and cardiovagal index 2LV% was significantly lower to standing in boys suffering from ADHD. Importantly, ADHD symptom inattention positively correlated with 0V%, and negatively correlated with NCI, NUPI. Concluding, symbolic dynamics revealed impaired complex neurocardiac control characterised by potential cardiac beta-adrenergic overactivity and vagal deficiency at rest and to posture changes in boys suffering from ADHD that is correlated with inattention. We suggest that symbolic dynamics indices could represent promising cardiac biomarkers in ADHD.

scholarly journals Heart rate variability analysis by chaotic global techniques in children with attention deficit hyperactivity disorder

Complexity ◽  
2015 ◽  
Vol 21 (6) ◽  
pp. 412-419 ◽  
Author(s):  
Rubens Wajnsztejn ◽  
Tatiana Dias De Carvalho ◽  
David M. Garner ◽  
Luiz Carlos Marques Vanderlei ◽  
Moacir Fernandes Godoy ◽  
...  
Keyword(s):  
Heart Rate ◽  
Attention Deficit Hyperactivity Disorder ◽  
Heart Rate Variability ◽  
Attention Deficit ◽  
Heart Rate Variability Analysis ◽  
Variability Analysis ◽  
Hyperactivity Disorder

scholarly journals Attention Deficit/Hyperactivity Disorder (ADHD) Is Associated With Altered Heart Rate Asymmetry

2014 ◽  
pp. S509-S519 ◽  
Author(s):  
I. TONHAJZEROVÁ ◽  
I. ONDREJKA ◽  
I. FARSKÝ ◽  
Z. VIŠŇOVCOVÁ ◽  
M. MEŠŤANÍK ◽  
...  
Keyword(s):  
Heart Rate ◽  
Attention Deficit Hyperactivity Disorder ◽  
Attention Deficit ◽  
Physiological Stress ◽  
Regulatory System ◽  
Adverse Outcomes ◽  
Time Asymmetry ◽  
Hyperactivity Disorder ◽  
Rate Asymmetry ◽  
Heart Rate Asymmetry

Attention deficit/hyperactivity disorder (ADHD) is associated with complex neurocardiac integrity. We aimed to study heart rate time asymmetry as a nonlinear qualitative feature of heart rate variability indicating complexity of cardiac autonomic control at rest and in response to physiological stress (orthostasis) in children suffering from ADHD. Twenty boys with ADHD and 20 healthy age-matched boys at the age of 8 to 12 years were examined. The continuous ECG was recorded in a supine position and during postural change from lying to standing (orthostasis). Time irreversibility indices – Porta’s (P%), Guzik’s (G%) and Ehlers’ (E) – were evaluated. Our analysis showed significantly reduced heart rate asymmetry indices at rest (P%: 49.8 % vs. 52.2 %; G%: 50.2 % vs. 53.2 %; p<0.02), and in response to orthostatic load (P%: 52.4 % vs. 54.5 %, G%: 52.3 % vs. 54.5 %; p<0.05) associated with tachycardia in ADHD children compared to controls. Concluding, our study firstly revealed the altered heart rate asymmetry pattern in children suffering from ADHD at rest as well as in response to posture change from lying to standing (orthostasis). These findings might reflect an abnormal complex cardiac regulatory system as a potential mechanism leading to later cardiac adverse outcomes in ADHD.

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