https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43670 refl), and the augmentation index (AI), assuming a general extended model of the arterial system. Then, we test the proposed model against values reported in the literature. Finally, we discuss insights from the model to common observations in the literature such as age-related “shift” in the reflection site, the variation of AI with heart rate, and the flattening of T_refl in older participants.]]> Tue 27 Sep 2022 15:14:55 AEST ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:39248 TCD , as an indicator of vascular stiffening and vascular health. We investigate the correlations of the new index and the existing indices, namely the pulsatility index and the augmentation index, with age, cardiorespiratory fitness (CRF) and magnetic resonance imaging (MRI) blood flow pulsatility index (PI_MRI). Notably, the new index showed stronger correlations with CRF (r = −0.79) and PI MRI (r = 0.53) compared with the augmentation index (r = −0.65 with CRF and no significant correlation with PI_MRI) and the pulsatility index (no significant correlations with CRF or PI_MRI), and a similar correlation with age as the augmentation index. The clearer relationship of the proposed timing index with vascular aging factors underlines its utility as an early indicator of vascular stiffening.]]> Tue 27 Feb 2024 13:54:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46046 Thu 10 Nov 2022 09:29:01 AEDT ]]>