Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, Key Laboratory of Human Motion Analysis and Rehabilitation Technology of the Ministry of Civil Affairs, National Research Center for Rehabilitation Technical Aids, Beijing, China.
Affiliated Hospital of National Research Center for Rehabilitation Technical Aids, Beijing, China.
J Healthc Eng. 2021 Oct 25;2021:6208499. doi: 10.1155/2021/6208499. eCollection 2021.
Foot ulcers often occur in people with diabetes because of pressure-induced tissue ischemia. Vibration has been reported to be helpful in alleviating mechanical damage and promoting wound healing. The objective of this study is to explore whether vibration can relieve reactive hyperemia in foot tissue under occlusive compression.
Thirteen healthy adults participated in the study. Each foot was placed under occlusive compression without or with vibration intervention, which was randomly assigned every other day. The dorsal foot skin blood flow (SBF) was measured pre- and postintervention for each subject in each test. Temporal variations and spectral features of SBF were recorded for comparison.
The results showed that subjects displayed an obvious reactive hyperemia in the foot tissue after pressure occlusion, whereas they displayed a more regular SBF when vibration was applied along with occlusive compression. Moreover, the amplitude of metabolic, neurogenic, and myogenic pathways for SBF was significantly reduced during the hyperemia process when vibration was applied.
This study demonstrated that vibration can effectively reduce the level of hyperemia in foot tissue under occlusive compression and also induce less protective physiological regulatory activities. This is helpful for protecting foot tissue from pressure-induced ischemic injury and foot ulcers.
由于压力导致组织缺血，糖尿病患者常发生足部溃疡。振动已被报道有助于缓解机械损伤和促进伤口愈合。本研究旨在探讨振动是否能缓解压迫性压缩下足部组织的反应性充血。
13 名健康成年人参与了这项研究。每只脚在无振动或有振动干预的情况下进行压迫性压缩，干预方式每隔一天随机分配。在每次测试中，对每位受试者在干预前后测量足底皮肤血流量（SBF）。记录血流的时变和频谱特征进行比较。
结果显示，受试者在压迫性闭塞后足部组织出现明显的反应性充血，而在施加振动的同时进行压迫性压缩时，血流显示出更规则的 SBF。此外，当施加振动时，血流的代谢、神经和肌源性通路的幅度在充血过程中显著降低。
本研究表明，振动可有效降低压迫性压缩下足部组织的充血水平，并诱导较少的保护性生理调节活动。这有助于保护足部组织免受压力引起的缺血性损伤和足部溃疡。
