DOI: 10.17265/2159-5542/2018.10.004
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David Catela, Susana Alves, Isabel Piscalho

Abstract: Attention deficit/hyperactivity disorder (ADHD) is associated to a lower respiratory sinus arrhythmia (RSA) and to a lower heart rate variability (HRV). The purpose of this study is to verify if through breath control, an ADHD boy (9 years old) could increase HRV. During breathing control, the child significantly reduced breathing frequency (BF) and heart rate (HR); significantly augmented mean RR interval and pNN50; augmented HRVi (ns) and HF (ns); and reduced LF/HF ratio (ns). Consequently, during short trai…

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