نتایج جستجو برای: heart rate variability
تعداد نتایج: 1403053 فیلتر نتایج به سال:
Introduction and purpose: Cardiac response to body core temperature variation measured with the very low-frequency parameter of heart rate variability. The aim of this study was to investigate the variability of very low frequency due to different temperatures of aerobic training in water and dry. Materials and methods: 40 academic active male were selected as research subjects. Then, all subje...
Introduction: Beat-to-beat variation in heart rate shows a complex dynamics, and this complexity is changed during systemic inflammatory response syndrome (e.g. sepsis). It is not known whether or not cardiac pacemaker dynamical rhythm is affected by sepsis. The aim of this study was to investigate heart rate dynamics of isolated heart as well as expression of pacemaker channels (HCN) in a r...
Mailing Address: Marcos Antonio Almeida Santos • Avenida Gonçalo Prado Rollemberg, 211, sala 210, São José. Postal Code 49010‐410, Aracaju, SE – Brazil. E‐mail: [email protected]; [email protected] Manuscript received October 09, 2014; revised manuscript November 13, 2014; accepted November 13, 2014.
Heart-rate variability (HRV) is frequently introduced as mirroring imbalances within the autonomous nerve system. Many investigations are based on the paradigm that increased sympathetic tone is associated with decreased parasympathetic tone and vice versa. But HRV is probably more than an indicator for probable disturbances in the autonomous system. Some perturbations trigger not reciprocal, b...
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