Currently, the world is facing the challenge of population aging. At this stage of life, various deteriorations, such as cognitive decline, begin to appear, significantly impairing the quality of life. Therefore, it is imperative to seek interventions that can positively impact the life trajectory of older adults. While the cognitive benefits of musical interventions for children and young people are well-documented, there is a lack of evidence regarding their effects on the cognitive and socioemotional well-being of institutionalized older adults.

To address this, the investigators will conduct a non-randomized clinical trial at Fundación Las Rosas, which operates various homes for the elderly. The trial will involve two groups: a control group and an experimental group. The control group will attend concerts held within the care facility, while the experimental group will participate in a music workshop once a week for three months.

To evaluate the outcomes, cognitive and socioemotional assessments will be conducted at three points: prior to the musical intervention (baseline), at the end of the intervention period, and one month after the interventions conclude (follow-up). The results will provide valuable insights to support the development and implementation of cost-effective non-pharmacological interventions, specifically musical interventions, to promote well-being in older adults by demonstrating their applicability and effectiveness within the national context. By assessing the intervention's impact on both cognitive and socioemotional dimensions, this study will also contribute to a deeper understanding of how these skills can be developed and promoted among older adults.

The world is facing a gradual aging of the population. It is estimated that in the coming years, people over 60 years old will outnumber children under 10 years old, and by 2050, the population over 60 will surpass adolescents and young adults worldwide. Additionally, the population of those over 80 years old is expected to triple by 2050. Chile is also following this global trend. This reality underscores the need to understand how to ensure well-being during this life stage is not diminished by natural aging processes and their context, such as cognitive decline or the weakening of socioemotional well-being.

Music has been a form of expression accompanying humans since ancient times. It is a powerful generator of emotions , evocative of memories, and a creator of social cohesion. Importantly, it has shown positive effects on both cognitive and socioemotional aspects when musical interventions are implemented in older adults, in both clinical cases and typical aging. Active musical interventions include activities such as singing, playing an instrument, and/or moving to the rhythm of the music. The success of these interventions is proposed to be due to their requirements for multisensory integration, cognitive demands, promotion of social interaction and bond formation, perception as enjoyable and entertaining, and inherent motivational qualities that evoke positive emotions. These types of interventions could be highly relevant in the national context, for example, for the "Active Aging" program of the National Service for the Elderly (SENAMA) of the Ministry of Social Development and Family, which seeks to have self-sufficient older adults participate in activities that promote active aging, as well as for the National Comprehensive Health Plan for Older Adults, which proposes a series of actions framed, among other things, in the prevention of health problems. Therefore, it is urgent to evaluate the effectiveness of these interventions in our sociocultural context, particularly in nursing homes where residents often lack an extended network to care for them, making these interventions particularly important for those in vulnerable situations, and where such interventions have shown positive impacts.

This study proposes to evaluate the impact on both cognitive and socioemotional dimensions of a musical intervention in institutionalized older adults. Importantly, a study is proposed in which the participating institutions will be randomized to either the intervention group, where older adults will receive the musical intervention, or the control group, where they will not receive the intervention, following current recommendations for evaluating the impact of musical interventions in prevention and rehabilitation contexts. Evaluations of cognitive functions and socioemotional well-being will be conducted at three time points for both groups: baseline pre-intervention, post-intervention immediately after the intervention concludes, and follow-up one month after the intervention concludes. This design will elucidate the effect of the musical intervention on older adults and the persistence of these changes. The results of this study will be a starting point to promote research on musical interventions focused on the well-being of the older population in Chile. Additionally, they will allow applications for funding to continue investigating the most effective forms of intervention for this age group and understanding the mechanisms by which these interventions act, for example, using neurobiological activity measurement techniques from neuroscience.

General Aim

To evaluate the impact on cognitive and socioemotional dimensions of a musical intervention in older adults residing in a nursing home.

Specific Aim

1. To determine changes in cognitive functions and socioemotional well-being pre- and post-musical intervention in both the intervention and control groups.
2. To assess the persistence of cognitive and socioemotional changes post-intervention in both groups.
3. To analyze similarities and differences in cognitive functions and socioemotional well-being across all evaluation stages (pre, post, follow-up) between the intervention and control groups.

Methods

A non-randomized clinical study, quasi-experimental in nature, will be conducted, recording changes at three time points: a) pre-intervention, b) post-intervention, and c) follow-up.

Senior citizen Residences The study will take place at Fundación Las Rosas in Santiago, Chile. Each participant will be individually invited and informed about the study, with all consent points reviewed in a conducive environment for uninterrupted conversation.

Interventions

• Control:** Participants will attend concerts held within the care facility
• Experimental:** Group musical intervention once a week in 60-minute sessions for three months, a sufficient duration to observe changes (Mathew et al., 2017). Sessions will be designed by the principal investigator and a music teacher, and conducted by the experienced music teacher. Activities will include experiencing sound qualities (pitch, duration, intensity, and timbre) through movement, with a focus on collective participation and learning. Musical preferences of participants will be considered in the session design.

Evaluations and outcomes

Evaluations of cognitive and socioemotional functioning will be assessed three times: 1) at baseline, prior to the musical intervention; 2) post-intervention, immediately after the intervention concludes; and 3) follow up, one month after the intervention concludes.

During the second evaluation (post-intervention), a Satisfaction Survey will also be administered to the intervention group to gauge acceptance and feedback for refining the intervention.

This study aims to enhance understanding of the effects of musical interventions on older adults and provide valuable data to develop more effective programs, ultimately improving the quality of life for the elderly population in Chile.

Inclusion Criteria:

• Older adults residing in a protected residence.
• Consent to participate in the study.

Exclusion Criteria:

• Physical or cognitive impairments that prevent participation in musical intervention activities.
• Mild cognitive impairment determined by the GDS-3 scale, reported by the residence therapists.