Chen Wei, Miao Gaofan, Xv Yanfei, Zhou Zhixiong, Zhu Weili
Cardiovascular Health Laboratory, Capital University of Physical Education and Sports, Beijing, China.
Front Physiol. 2023 Feb 17;14:1081668. doi: 10.3389/fphys.2023.1081668. eCollection 2023.
To examine the acute arterial stiffness changes after maintaining one bout of balance on Swiss ball using different postures in young and middle-aged adults, and to evaluate the cumulative exposure effects on arterial stiffness after multiple exercise bouts in middle-aged adults. Using crossover design, we first enrolled 22 young adults (24.0 ± 1.1 years) and randomized them to non-exercise control (CON), on-ball balance exercise trial lasting 1 × 5 min in kneeling posture (K1) and sitting posture (S1). In a following crossover experiment, 19 middle-aged adults (53.0 ± 4.7 years) were randomized to non-exercise control (CON), on-ball balance exercise trial lasting 1 × 5 min in kneeling posture (K1) and in sitting posture (S1), and on-ball balance exercise trial lasting 2 × 5 min in kneeling posture (K2) and in sitting posture (S2). Cardio-ankle vascular index (CAVI), an indicator of systemic arterial stiffness, was measured at baseline (BL), immediately after (0 min), and every 10 min after exercise. CAVI changes from BL in the same trial (⊿CAVI) were used for analysis. In K1 trial, ⊿CAVI decreased significantly at 0 min ( < 0.05) in both young and middle-aged adults; however in S1 trial, ⊿CAVI at 0 min increased significantly in young adults ( < 0.05), with ⊿CAVI tending to increase in middle-aged adults. Bonferroni post-test revealed that at 0 min, ⊿CAVI of K1 in both young and middle-aged adults, and ⊿CAVI of S1 in young adults differed significantly from that of CON ( < 0.05). In middle-aged adults, ⊿CAVI decreased significantly at 10 min compared to BL in K2 trial ( < 0.05), and increased at 0 min compared to BL in S2 trial ( < 0.05); however, difference compared to CON was not significant. Single on-ball balance bout in kneeling posture improved arterial stiffness transiently in both young and middle-aged adults; however, sitting posture elicited opposite changes, and this happened only in young adults. Multiple balance bouts resulted in no significant change in arterial stiffness in middle-aged adults.
为研究青年和中年成年人在瑞士球上采用不同姿势保持一次平衡后急性动脉僵硬度的变化，并评估中年成年人多次运动后对动脉僵硬度的累积暴露效应。采用交叉设计，我们首先招募了22名青年成年人（24.0±1.1岁），并将他们随机分为非运动对照组（CON）、跪姿持续1×5分钟的球上平衡运动试验（K1）和坐姿持续1×5分钟的球上平衡运动试验（S1）。在接下来的交叉实验中，19名中年成年人（53.0±4.7岁）被随机分为非运动对照组（CON）、跪姿持续1×5分钟和坐姿持续1×5分钟的球上平衡运动试验（K1和S1），以及跪姿持续2×5分钟和坐姿持续2×5分钟的球上平衡运动试验（K2和S2）。在基线（BL）、运动后即刻（0分钟）以及运动后每10分钟测量全身动脉僵硬度指标——心踝血管指数（CAVI）。同一试验中CAVI相对于BL的变化（⊿CAVI）用于分析。在K1试验中，青年和中年成年人在0分钟时⊿CAVI均显著下降（<0.05）；然而在S1试验中，青年成年人在0分钟时⊿CAVI显著升高（<0.05），中年成年人的⊿CAVI有升高趋势。Bonferroni事后检验显示，在0分钟时，青年和中年成年人K1的⊿CAVI以及青年成年人S1的⊿CAVI与CON的⊿CAVI有显著差异（<0.05）。在中年成年人中，K2试验中10分钟时的⊿CAVI相对于BL显著下降（<0.05），S2试验中0分钟时相对于BL升高（<0.05）；然而，与CON相比差异不显著。在青年和中年成年人中，单次跪姿球上平衡运动可使动脉僵硬度短暂改善；然而，坐姿却引发相反变化，且仅发生在青年成年人中。多次平衡运动对中年成年人的动脉僵硬度无显著影响。
