Craponne Sur Arzon

It is estimated that the prevalence of dementia in France is 5% for people over 65 years of age and that this increases to 18% for people over 75 years of age. Behavioral disorders are frequent in patients with dementia and are the main cause of institutionalization, representing up to 50% of cases. Dementia syndromes can be translated into behavioral and psychological symptoms of dementia (BPSD), which are defined as perceptual, mood or behavioral disorders. To date, there is no cure for dementia, but certain measures can be taken to reduce symptoms. The HAS suggests that physical exercise would reduce BPSD and could improve the ability to perform activities of daily living or slow down the cognitive decline of this type of patient. Indeed, several articles have highlighted the benefits of physical activity in demented patients. A meta-analysis has shown a significant decrease in BPSD via the Neuropsychiatric Inventory (NPI) score. Nevertheless, it is often observed that there is a difficulty in adhering to the program in very elderly population groups. Dance is a complete physical activity that integrates physical, cognitive and social elements. A meta-analysis has shown that dance has a significant effect on global cognition but also on neuroplasticity and physical functioning in patients with mental disorders. The music component of dance also has an effect on the behavioral problems of demented patients, stimulating language ability and social and emotional function. However, at present, no study of good methodological quality has been able to demonstrate the effectiveness of dance-based physical activity for the treatment of dementia symptoms. As a result of these findings, the APAISE project was developed and should help slow the onset of BPSD in patients with dementia.

The objective of this clinical trial is to determine whether ultraviolet germicidal irradiation (UVGI) can decrease the frequency of severe acute respiratory infections in elderly people living in nursing homes. 12 elderly nursing homes (ENH) will participate in the study. In all the ENHs included, UVGI devices will be installed in upper part under the ceiling of common rooms (refectories, group activity rooms, lounges) at the start of the study. The UVGI devices can be deactivated by installing an invisible internal filter. The inactivation filters will be installed by a technical team independent of the investigation team. Inactivation will therefore be carried out blind to the care givers and the investigation team. The nursing homes included will be randomized into two arms: * In arm A: the UVGI device will be left active during period 1, and filtered/deactivated during period 2. * In arm B: the UVGI device will be filtered/deactivated during period 1 and left active during period 2. The two periods will last 7 months each, and will take place two years in a row on the same dates (October 1 to April 30). They will be separated by a 5-month wash-out period (May 1 to September 30), during which all UVGI devices will be switched off in both arms. The main questions the study aims to answer is: do active UVGI devices decrease the number of acute respiratory infections leading to oxygen therapy, hospitalization or death during the study periods.