Paditsaeree Kampanart, Mitranun Witid
Department of Physical Education, Faculty of Education, Phuket Rajabhat University, Phuket 83000, Thailand.
Department of Sports Science, Faculty of Physical Education, Sports, and Health, Srinakharinwirot University, Nakhon Nayok 26120, Thailand.
Geriatrics (Basel). 2024 Apr 27;9(3):56. doi: 10.3390/geriatrics9030056.
Prior research has suggested that resistance exercise may result in a temporary decrease in vascular function, as measured by flow-mediated dilation (FMD), among untrained young individuals. However, the immediate impact of combined elastic and weight resistance training on older adults remains insufficiently explored. We assessed vascular function before, after, and 30 min after acute exercise under three resistance conditions to evaluate whether a combination of weight and elastic resistance exercises has an acute effect on vascular function in older adults. Fourteen older adults (65.6 ± 2.9 years) executed three sets of 12 repetitions at 65% of one repetition maximum (1 RM) of the bench press (BP) exercise. Testing was performed on three separate days as follows: (1) barbell alone (BA); (2) barbell plus elastic bands (10% of 65% 1 RM) (BE10); and (3) barbell plus elastic bands (20% of 65% 1 RM) (BE20). A two-way (time × condition) repeated measures analysis of variance was employed to assess the time and condition effects on flow-mediated dilation (FMD) and pulse wave velocity (PWV). At 0 min post-exercise, FMD was significantly higher during BE10 than during BA ( < 0.05); however, at 30 min post-exercise, no significant difference ( ≥ 0.05) was observed between the three conditions. In each condition, FMD results did not differ significantly at different times ( ≥ 0.05). For FMD, the main effect of the condition (F[2,26] = 3.86, = 0.034) and that of the time and condition (F[4,52] = 3.66, = 0.011) were significant. For PWV, only the difference between the BA and BE10 conditions was significant at 0 min ( < 0.05). PWV increased from baseline in the BA condition ( < 0.05) but not significantly in the BE10 and BE20 conditions ( ≥ 0.05). Therefore, BA, BE10, and BE20 demonstrated various changes in vascular function. Long-term training intervention studies are needed to validate these findings.
先前的研究表明,在未经训练的年轻人中,抗阻运动可能会导致血管功能暂时下降,这通过血流介导的血管舒张(FMD)来衡量。然而,弹性抗阻训练和重量抗阻训练相结合对老年人的即时影响仍未得到充分探索。我们在三种抗阻条件下评估了急性运动前、运动后以及运动后30分钟的血管功能,以评估重量抗阻训练和弹性抗阻训练相结合是否对老年人的血管功能有急性影响。14名老年人(65.6±2.9岁)以一次最大重复量(1RM)的65%进行三组12次重复的卧推(BP)运动。测试在三个不同的日子进行,如下所示:(1)仅使用杠铃(BA);(2)杠铃加弹力带(65% 1RM的10%)(BE10);(3)杠铃加弹力带(65% 1RM的20%)(BE20)。采用双向(时间×条件)重复测量方差分析来评估时间和条件对血流介导的血管舒张(FMD)和脉搏波速度(PWV)的影响。运动后0分钟时,BE10期间的FMD显著高于BA期间(P<0.05);然而,运动后30分钟时,三种条件之间未观察到显著差异(P≥0.05)。在每种条件下,不同时间的FMD结果无显著差异(P≥0.05)。对于FMD,条件的主效应(F[2,26]=3.86,P=0.034)以及时间和条件的主效应(F[4,52]=3.66,P=0.011)均显著。对于PWV,仅在0分钟时BA和BE10条件之间的差异显著(P<0.05)。BA条件下PWV从基线升高(P<0.05),但BE10和BE20条件下无显著升高(P≥0.05)。因此,BA、BE10和BE20在血管功能方面表现出不同的变化。需要进行长期训练干预研究来验证这些发现。