Key result
Salivary cortisol, salivary alpha-amylase, and physical activity were significantly associated with cognitive functions in institutionalized older adults with mild cognitive impairment (P=0.026).
Why the study?
This study aimed to investigate objectively measured physical activity and elucidate the influence of autonomic nervous function, salivary cortisol, and physical activity on cognitive functions in institutionalized older adults with mild cognitive impairment based on the neurovisceral integration model.
Observational
In institutionalized older adults with MCI, salivary cortisol, sympathetic nervous activity, and physical activity are significantly associated with cognitive and executive functions.
Answers are grounded in this paper and cite their sources.
Associations link PA, cortisol, and sAA to cognition in institutionalized MCI; leaves open causality and practice implications.
PURPOSE: This study aimed to investigate objectively measured physical activity (PA) in institutionalized older adults with mild cognitive impairment (MCI) and to elucidate the influence of autonomic nervous function, salivary cortisol, and PA on cognitive functions based on neurovisceral integration model. METHODS: Overall cognitive function was evaluated using the mini-mental state examination (MMSE) and executive function was evaluated using semantic verbal fluency test and clock drawing test. Actigraph for PA, HRV and sAA for autonomous function, and the geriatric depression scale for depression were used. Saliva specimens were collected in the morning for sAA and cortisol. CONCLUSION: Salivary cortisol, sAA and physical activity were significantly associated with cognitive functions. To prevent older adults from developing dementia, strategies are needed to increase their overall PA amount by decreasing sedentary time and to decrease salivary cortisol for cognitive function, and to maintain their sympathetic nervous activity for executive function.
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Minhee Suh (2021) conducted an observational in Mild cognitive impairment. Physical activity, autonomic nervous function, and salivary cortisol was evaluated on Cognitive functions (MMSE, semantic verbal fluency test, clock drawing test) (p=0.026). Salivary cortisol, salivary alpha-amylase, and physical activity were significantly associated with cognitive functions in institutionalized older adults with mild cognitive impairment (P=0.026).
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