Hsiao Ya-Wen, Tzeng Hsin-Ya, Chu Chi-Ming, Lan Hsiang-Yun, Chiang Hui-Hsun
School of Nursing, National Defense Medical Center, No 161, Sec. 6, Minquan E. Road, Neihu Dist., Taipei 11490, Taiwan.
Department of Nursing, Tri-Service General Hospital, No 325, Sec. 2, Chenggong Rd., Neihu Dist., Taipei 10490, Taiwan.
J Pers Med. 2022 Mar 22;12(4):510. doi: 10.3390/jpm12040510.
Regional cerebral blood flow (rCBF) increases after moderately intense exercise and is significantly correlated with cognitive function. However, no intensity-based physiological indicator for enhancing rCBF during low- to-moderate-intensity exercise has been proposed. The purpose of this study was to develop a physiological indicator housed in a wearable device to determine whether low-to-moderate intensity walking can increase rCBF. A cross-sectional study with four parallel arms was performed. Each of 114 participants was randomly assigned to either the moderate, low-to-moderate, low, or very low walking intensity groups. A novel dynamic cardiac force meter (CFM) was used to quantify walking intensity. Heart rate and hemoencephalography (HEG) were measured during each phase of the session. Compared to baseline, HEG significantly increased in both the submaximal exercise and recovery phases in members of the low-to-moderate intensity group but not the very low intensity group. Low-to-moderate intensity walking improves prefrontal cerebral blood oxygenation. The present results demonstrate the usefulness of a dynamic CFM housed in a wearable device for quantifying the intensity of walking exercise aimed at increasing prefrontal blood oxygenation. The results of the study may help guide further development of exercise strategies for brain disease patients and the ageing population.
中等强度运动后，局部脑血流量（rCBF）会增加，且与认知功能显著相关。然而，尚未提出基于强度的生理指标来在低至中等强度运动期间增强rCBF。本研究的目的是开发一种可穿戴设备中的生理指标，以确定低至中等强度的步行是否能增加rCBF。进行了一项具有四个平行组的横断面研究。114名参与者中的每一位都被随机分配到中等、低至中等、低或极低步行强度组。使用一种新型动态心力计（CFM）来量化步行强度。在每个阶段测量心率和脑血图（HEG）。与基线相比，低至中等强度组成员在次最大运动和恢复阶段的HEG显著增加，而极低强度组则没有。低至中等强度的步行可改善前额叶脑血氧合。目前的结果证明了可穿戴设备中动态CFM对于量化旨在增加前额叶血氧合的步行运动强度的有用性。该研究结果可能有助于指导针对脑部疾病患者和老年人群的运动策略的进一步发展。
