PDF(Pubmed)
Abstract：
OBJECTIVE: This study explored the impact of one session of low-pressure leg blood flow restriction (BFR) during treadmill walking on dual-task performance in older adults using the neurovisceral integration model framework.
METHODS: Twenty-seven older adults participated in 20-min treadmill sessions, either with BFR (100 mmHg cuff pressure on both thighs) or without it (NBFR). Dual-task performance, measured through light-pod tapping while standing on foam, and heart rate variability during treadmill walking were compared.
RESULTS: Following BFR treadmill walking, the reaction time (p = 0.002) and sway area (p = 0.012) of the posture dual-task were significantly reduced. Participants exhibited a lower mean heart rate (p < 0.001) and higher heart rate variability (p = 0.038) during BFR treadmill walking. Notably, BFR also led to band-specific reductions in regional brain activities (theta, alpha, and beta bands, p < 0.05). The topology of the EEG network in the theta and alpha bands became more star-like in the post-test after BFR treadmill walking (p < 0.005).
CONCLUSIONS: BFR treadmill walking improves dual-task performance in older adults via vagally-mediated network integration with superior neural economy. This approach has the potential to prevent age-related falls by promoting cognitive reserves.
METHODS: Twenty-seven older adults participated in 20-min treadmill sessions, either with BFR (100 mmHg cuff pressure on both thighs) or without it (NBFR). Dual-task performance, measured through light-pod tapping while standing on foam, and heart rate variability during treadmill walking were compared.
RESULTS: Following BFR treadmill walking, the reaction time (p = 0.002) and sway area (p = 0.012) of the posture dual-task were significantly reduced. Participants exhibited a lower mean heart rate (p < 0.001) and higher heart rate variability (p = 0.038) during BFR treadmill walking. Notably, BFR also led to band-specific reductions in regional brain activities (theta, alpha, and beta bands, p < 0.05). The topology of the EEG network in the theta and alpha bands became more star-like in the post-test after BFR treadmill walking (p < 0.005).
CONCLUSIONS: BFR treadmill walking improves dual-task performance in older adults via vagally-mediated network integration with superior neural economy. This approach has the potential to prevent age-related falls by promoting cognitive reserves.
摘要：
目的：本研究使用神经内脏整合模型框架，探讨了在跑步机行走期间进行一次低压腿部血流限制（BFR）对老年人双任务表现的影响。
方法：27名老年人参加了20分钟的跑步机课程，使用BFR（大腿上的100mmHg袖带压力）或不使用它（NBFR）。双重任务性能，通过站在泡沫上轻拍来测量，比较了跑步机步行过程中的心率变异性。
结果：在BFR跑步机行走之后，姿势双重任务的反应时间（p=0.002）和摇摆面积（p=0.012）显着减少。在BFR跑步机行走期间，参与者表现出更低的平均心率（p<0.001）和更高的心率变异性（p=0.038）。值得注意的是,BFR还导致区域大脑活动的带特异性减少(θ，阿尔法，和β带，p<0.05)。在BFR跑步机行走后的后期测试中，EEG网络在theta和alpha波段的拓扑变得更像星形（p<0.005）。
结论：BFR跑步机通过具有优越神经经济性的迷走神经介导的网络整合，提高了老年人的双任务表现。这种方法有可能通过促进认知储备来预防与年龄相关的跌倒。
方法：27名老年人参加了20分钟的跑步机课程，使用BFR（大腿上的100mmHg袖带压力）或不使用它（NBFR）。双重任务性能，通过站在泡沫上轻拍来测量，比较了跑步机步行过程中的心率变异性。
结果：在BFR跑步机行走之后，姿势双重任务的反应时间（p=0.002）和摇摆面积（p=0.012）显着减少。在BFR跑步机行走期间，参与者表现出更低的平均心率（p<0.001）和更高的心率变异性（p=0.038）。值得注意的是,BFR还导致区域大脑活动的带特异性减少(θ，阿尔法，和β带，p<0.05)。在BFR跑步机行走后的后期测试中，EEG网络在theta和alpha波段的拓扑变得更像星形（p<0.005）。
结论：BFR跑步机通过具有优越神经经济性的迷走神经介导的网络整合，提高了老年人的双任务表现。这种方法有可能通过促进认知储备来预防与年龄相关的跌倒。
