ArticleBMJ open2025
Assessing modified olfactory training to prevent cognitive decline in MCI high-risk individuals: a multicentre randomised controlled trial protocol in Beijing tertiary hospitals.
Article in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06821828 (Assessing Modified Olfactory Training to Prevent Cognitive Decline in MCI High-Risk Individuals), which is not on this map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Assessing Modified Olfactory Training to Prevent Cognitive Decline in MCI High-Risk Individuals: A Randomized Controlled Trial Protocol
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4 authors.
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Abstract
introductionMild cognitive impairment (MCI) presents a significant risk, with a 75-80% likelihood of progressing to dementia. Despite this high risk, there is currently no straightforward and effective treatment strategy to halt or reverse this progression. Olfactory dysfunction, in conjunction with subjective cognitive decline, offers a crucial opportunity for early intervention in older adults at risk of MCI. Conventional olfactory training (COT) has demonstrated potential in enhancing neuroplasticity, which is vital for cognitive health. Initial studies indicate that modified olfactory training (MOT) may yield superior outcomes compared to COT. Thus, this study aims to evaluate the efficacy of MOT in delaying and preventing the progression of MCI in high-risk individuals. METHODS AND ANALYSIS: This randomised, controlled, multicentre, prospective and open-label trial will be conducted at Peking University Third Hospital and enrol 114 participants, who will be randomised 1:1:1 into three groups: MOT, COT and a control group. Standardised assessments will be conducted at baseline, 3 months, 6 months, 12 months and 24 months to measure cognitive and olfactory outcomes. The primary outcomes will be the change in Montreal Cognitive Assessment score, neuroimaging assessments and the Sniffin' Sticks test score. The secondary outcomes will include olfactory bulb volume and several neuroimaging tests. ETHICS AND DISSEMINATION: This study protocol has been registered with ClinicalTrials.gov and has received approval from the Peking University Third Hospital Medical Science Research Ethics Committee (2023-347-01). The results will be disseminated through publication in scientific peer-reviewed journals. TRIAL REGISTRATION NUMBER: NCT06821828.
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