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Labisa da Silva Palmeira, António João

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  • Intervention and mediation effects of a community-based singing group on older adults’ perceived physical and mental health: the Sing4Health randomized controlled trial
    Publication . Galinha, Iolanda Costa; Fernandes, Helder Miguel; Lima, Maria Luisa; Palmeira, AL
    Abstract ObjectiveTo examine short- and long-term effects of a group singing program on older adults’ perceived physical and mental health levels, and also investigate subjective well-being (life satisfaction, positive/negative affect and hedonic balance), body balance and serum biomarkers (C-reactive protein and erythrocyte sedimentation rate) as putative mediating mechanisms, controlling for the cognitive status of the participants. Design: The randomized controlled trial included 149 participants (60 to 95 years), allocated to an immediate intervention group (IG) or a wait-list active control group (WLG). The intervention comprised 34 sessions of group singing during 4-months. Main outcome measures: Self-report measures of physical health, anxiety, stress, and depression. Blinded assessments were conducted at baseline, post-intervention (4 months) and follow-up (6 months). Results: Participants in the IG reported a lower decline in perceived physical health after the intervention, as compared to the WLG. These benefits were maintained at follow-up. Singing-related changes in physical and mental health outcomes were mediated via an increase in positive affect. Moderation results showed that participants with very low cognitive functioning reported more anxiety and depression symptoms after the intervention. Conclusions: These findings provide further understanding on the psychological and physical mechanisms and effects of group singing in older adults.
  • Users’ experiences with the nohow web-based toolkit with weight and activity tracking in weight loss maintenance: Long-term randomized controlled trial
    Publication . Mattila, Elina; Hansen, Susanne; Bundgaard, Lise; Ramsey, Lauren; Dunning, Alice; Silva, Marlene N.; Harjumaa, Marja; Ermes, Miikka; Marques, Marta M.; Matos, Marcela; Larsen, Sofus C.; Encantado, Jorge; Santos, Inês; Horgan, Graham; O'Driscoll, Ruairi; Turicchi, Jake; Duarte, Cristiana; Palmeira, AL; Stubbs, R James; Heitmann, Berit Lilienthal; Lähteenmäki, Liisa
    Background: Digital behavior change interventions (DBCIs) offer a promising channel for providing health promotion services. However, user experience largely determines whether they are used, which is a precondition for effectiveness. Objective: The primary aim of this study is to evaluate user experiences with the NoHoW Toolkit (TK)—a DBCI that targets weight loss maintenance—over a 12-month period by using a mixed methods approach and to identify the main strengths and weaknesses of the TK and the external factors affecting its adoption. The secondary aim is to objectively describe the measured use of the TK and its association with user experience. Methods: An 18-month, 2×2 factorial randomized controlled trial was conducted. The trial included 3 intervention arms receiving an 18-week active intervention and a control arm. The user experience of the TK was assessed quantitatively through electronic questionnaires after 1, 3, 6, and 12 months of use. The questionnaires also included open-ended items that were thematically analyzed. Focus group interviews were conducted after 6 months of use and thematically analyzed to gain deeper insight into the user experience. Log files of the TK were used to evaluate the number of visits to the TK, the total duration of time spent in the TK, and information on intervention completion. Results: The usability level of the TK was rated as satisfactory. User acceptance was rated as modest; this declined during the trial in all the arms, as did the objectively measured use of the TK. The most appreciated features were weekly emails, graphs, goal setting, and interactive exercises. The following 4 themes were identified in the qualitative data: engagement with features, decline in use, external factors affecting user experience, and suggestions for improvements. Conclusions: The long-term user experience of the TK highlighted the need to optimize the technical functioning, appearance, and content of the DBCI before and during the trial, similar to how a commercial app would be optimized. In a trial setting, the users should be made aware of how to use the intervention and what its requirements are, especially when there is more intensive intervention content.