Your search
Results 2 resources
-
We investigated whether more arterial stiffness changes could be induced by fragmentation of Swiss ball balance, and examined the role exercise order played in the modulation of arterial stiffness when on-ball kneeling and sitting were combined. Twenty-three healthy young adults (23.8 ± 0.3 years) performed 7 trials in a randomized crossover fashion: CON (non-exercise control), K (on-ball kneeling, 5 min), fK (fragmented on-ball kneeling, 2 × 2.5 min), S (on-ball sitting, 5 min), fS (fragmented on-ball sitting, 2 × 2.5 min), SK (5-min sitting before 5-min kneeling) and KS (5-min kneeling before 5-min sitting). Arterial stiffness in Cardio-ankle vascular index (CAVI) was measured at baseline (BL), immediately (0 min), and every 10 min after exercise, and its changes from BL (ΔCAVI) were calculated. Area under curve (AUC) of ΔCAVI was calculated for SK and KS. The results showed that relative to CON, ΔCAVI decreased at 0 min and 10 min in K and fK, and remained decreased at 20 min in fK only. However, ΔCAVI in S and fS increased with time similarly, with no difference relative to CON. Though ΔCAVI decreased at 10 min in SK, it decreased at both 0 min and 10 min in KS, relative to CON. AUC of ΔCAVI was greater in KS than in SK. The study indicated that compared to continuous mode, fragmented kneeling results in more arterial stiffness improvements, while fragmented sitting exerts no additional effects. When kneeling and sitting are combined, kneeling before sitting elicits more arterial stiffness improvements than sitting before kneeling. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.
-
Purpose: High central blood pressure is more predictive of cardiovascular disease (CVD) versus high peripheral blood pressure. Measures of central pressures (CPs) include, central systolic blood pressure (CSBP) and central diastolic blood pressure. Measures of central pressures augmentation (CPsA) include augmentation pressure (AP) and the augmentation index @ 75 beats$min-1 (AIx@75). Increased sympathetic tone (ST) is also associated with CVD. The low to high frequency ratio (LF/HF) is often used to determine sympatho-vagal balance. Given the association between ST, CPs, CPsA and CVD there is a need to understand the association between these predictors of CVD. The aims of this study were to examine the association between the LF/HF ratio, CPs, and CPsA in men and women collectively and based on gender. Methods: We measured the LF/HF ratio, CSBP, AP, and AIx@75 in 102 participants (41F/61M). The LF/ HF ratio was determined via power spectral density analysis. CSBP, AP, and AIx@75 were determined via applanation tonometry. Results: The LF/HF ratio was inversely associated with AP (r 5 -0.26) and AIx @75 (r 5 -0.29) in the combined group of men and women. The LF/HF ratio was inversely associated with CSBP (r 5 -0.27), AP (r 5 -0.28), and AIx@75 (r 5 -0.32) in men, but not in women. Conclusion: There is an inverse association between the LF/HF ratio, AP, and AIx@75 in men and women combined. The association between the LF/HF ratio, CSBP, AP, and AIx@75, differs based on gender. © 2020 Akademiai Kiado, Budapest.