Effectiveness of the physical activity intervention program in the PREDIMED-Plus study: a randomized controlled trial

The development and implementation of effective physical activity (PA) intervention programs is challenging, particularly in older adults. After the first year of the intervention program used in the ongoing PREvención con DIeta MEDiterránea (PREDIMED)-Plus trial, we assessed the initial effectiveness of the PA component. After 12 months, average daily MVPA increased by 27.2 (95%CI 5.7;48.7) METs-min/day and 123.1 (95%CI 109. 7–136.6) METs-min/day in the control and intervention groups, respectively. Total-PA, light-PA, and MVPA increased significantly (p < 0.01) in both groups. A significant (p < 0.001) time*intervention group interaction was found for Total-PA and MVPA, meaning the PA trajectory over time differed between the intervention and control groups. Age, sex, education level, and BMI did not moderate the effectiveness of the PA intervention. BMI and WC decreased significantly with increasing MVPA, compared with participants who reported no changes in MVPA. After one year of follow-up, the PREDIMED-Plus PA intervention has been effective in increasing daily PA in older adults.This work was supported by the Spanish Ministry of Health (Carlos III Health Institute) through the Fondo de Investigación para la Salud (FIS), which is co-funded by the European Regional Development Fund (two coordinated FIS projects led by Jordi Salas-Salvado and Josep Vidal, funded by the following grant codes: PI13/00673, PI13/00492, PI13/00272, PI13/01123, PI13/00462, PI13/00233, PI13/02184, PI13/00728 PI13/01090 PI13/01056, PI14/01722, PI14/ 00636, PI14/00618, PI14–00696, PI14/01471, PI14/01206, PI14/01919, PI14/ 00853 [JV and JSS]; the European Research Council (Advanced Research Grant 2013–2018; grant number 340918) [MAMG]; Recercaixa (2013ACUP00194); the Consejería de Salud de la Junta de Andalucía (grant number PI0458/2013) and a SEMERGEN grant. None of the funding sources took part in the design, collection, analysis or interpretation of the data, or in the decision to submit the manuscript for publication. CIBERobn (Centros de Investigación Biomedica en Red: Obesidad y Nutrición), CIBEResp (Centros de Investigación Biomedica en Red: Epidemiología y Salud Publica) and CIBERdem (Centros de Investigación Biomedica en Red: Diabetes y Enfermedades Metabolicas asociadas) are initiatives of ISCIII, Madrid, Spain