Abstract
BACKGROUND: Mastication improves cognitive function by activating cerebral cortical activity, and it is important to demonstrate the cognitive effects of masticatory training using a variety of different interventions.OBJECTIVE: This study aimed to evaluate the effects of masticatory exercise on cognitive function in healthy older adults living in the community.METHODS: For six weeks, twelve participants performed a masticatory exercise using a NOSICK exerciser device, and thirteen subjects performed daily life without masticatory exercises. Trail Making Test, Digit Span Test, and Stroop test were used to measure the cognitive function.RESULTS: The participants in the experimental group showed significant improvements in TMT-A/B ( 0.001 and 0.004), DST-forward ( 0.001), and ST-word ( 0.001). The effect sizes after the intervention were calculated as (1.2 and 0.8) for TMT-A/B, (0.8 and 0.2) for Digit Span Test forward/backward, and (0.6 and 0.2) for Stroop test color/word.CONCLUSIONS: We suggest that the masticatory exercises improve cognitive function in healthy older adults. Therefore, masticatory exercises can be used as a therapeutic exercise during cognitive rehabilitation.
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