The investigators designed an RCT aimed at 1) exploring the effectiveness of combining TC with rTMS for synergistically improving sleep disturbances in community-dwelling older adults, 2) investigating the mediating roles of arousal states as the underlying mechanism of the potential beneficial effects, and 3) evaluating the feasibility and safety to inform the clinical practice. The investigators hypothesized that integrating TC and rTMS can affect the different dimensions of the arousal system to improve sleep disturbances with optimized clinical outcomes.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
38
Tai Chi (TC) is a traditional Chinese exercise, also known as a mind-body exercise. It is suitable as an alternative or supplementary form of routine physical exercise for older adults. TC focuses on gentle and rhythmical movements while maintaining a meditative state. Low to moderate activities have benefits to improve sleep disturbances in older adults. In addition, growing evidence widely supports meditation as a potential intervention to improve sleep disturbances through reducing repetitive negative thoughts such as worry and rumination.
The brain stimulation technique repetitive transcranial magnetic stimulation (rTMS) provides the opportunity to non-invasively modulate cortical excitability. In general, low-frequency rTMS (≤ 1 Hz) is thought to inhibit cortical excitability.
The Hong Kong Polytechinic University
Hong Kong, Hong Kong
The change from baseline (T0) Insomnia Severity Index at immediately after the intervention (T1) and 3-month follow-up (T2)
Time frame: Baseline (T0), immediately after the intervention (T1), and 3-month follow-up (T2)
The change from baseline (T0) somatic and cognitive arousal assessed by Pre-Sleep Arousal Scale at immediately after the intervention (T1) and 3-month follow-up (T2)
Time frame: Baseline (T0), immediately after the intervention (T1), and 3-month follow-up (T2)
The change from baseline (T0) cortical arousal measured by 15 minutes eye-closed state electroencephalogram (EEG) at immediately after the intervention (T1) and 3-month follow-up (T2)
Time frame: Baseline (T0), immediately after the intervention (T1), and 3-month follow-up (T2)
The change from baseline (T0) sleep pattern assessed by an objective measurement (wrist ActiGraph GT3X) at immediately after the intervention (T1) and 3-month follow-up (T2)
Time frame: Baseline (T0), immediately after the intervention (T1), and 3-month follow-up (T2)
The change from baseline (T0) mood states assessed by Depression, Anxiety, and Stress Scale-21at immediately after the intervention (T1) and 3-month follow-up (T2)
Time frame: Baseline (T0), immediately after the intervention (T1), and 3-month follow-up (T2)
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