People living with dementia (PLWD) and their family caregivers report higher rates of having a sedentary lifestyle than their non-disabled peers do. This study analyzed the effectiveness of an intervention designed to increase physical activity among PLWD and their family caregivers in primary health care settings. A cluster-randomized multicenter clinical trial was conducted. Participants from four health centers were randomly assigned to the intervention group (IG) or the control group (CG) in a 1:1 ratio using Epidat software. After a seven-day period with a digital pedometer (Omron Hj-321 lay-UPS), participants were asked to complete the International Physical Activity Questionnaire Short Form (IPAQ-SF). PLWD and caregivers allocated to the IG were given brief advice, educational materials and an additional 15 min appointment to prescribe an individualized physical activity plan. Seventy PLWD and 80 caregivers were assigned to the CG and 70 PLWD and 96 caregivers were assigned to the IG. Results of the pedometer assessment show that in PLWD, the IG’s activity increased by 52.89 aerobic steps at 6 months and the CG’s activity decreased by 615.93 aerobic steps, showing a net increase in the IG of 668.82 (95% CI: −444.27 to 1781.91; p = 0.227). For caregivers in the IG, activity increased by 356.91 aerobic steps and in the CG it decreased by 12.95 aerobic steps, showing a net increase in favor of the IG of 369.86 (95%CI: −659.33 to 1399.05; p = 0.476). The effectiveness of interventions to increase physical activity in this group of people with dementia and their caregivers did not achieved positive results overall but may have provided suggestions for family physicians and physical therapists to improve physical activity among people with dementia and their families.

The results of a previously published pilot study allow us to be optimistic about the possibilities of a brief intervention.

Aim: To evaluate the effectiveness of an intervention in primary health care designed to increase physical activity in people with dementia and their family caregivers.Methods: A cluster-randomized multicentre clinical trial was carried out.Participants: 140 people with dementia (median age 82 years;63.6% women) and 176 caregivers (median age 62 years ;72.7% women). Seventy patients and 80 caregivers were assigned to the Control Group (CG) and 70 patients and 96 caregivers to the Intervention Group (IG). The physical activity was measured with the pedometer and with the IPAQ-SF questionnaire. The intervention consisted of applying in primary care the program promoting physical activity (PEPAF) for 3 months. The changes observed at 6 months were analyzed. Results:In people with dementia, in the pedometer assessment a decrease was observed in both groups, but it was larger in the CG both in the total number step/day lower in the IG than in the CG and in the aerobic steps / day (52.89 vs -615.93). The activity reported with the IPAQ-SF decreased more in IG, both in the MET/min/week (-258.470 vs -148.23) and in the MVPA min/week. In caregivers the pedometer assessment showed that total steps/day increased more in the IG, as did aerobic steps/day (356.91 vs -12.95). The IPAQ-SF a smaller increase in global activity was declared in the IG than in the CG (545.25 MET/min/week vs 609.55), but the increase in vigorous activity was greater. No differences were found in changes in the functional status and the cognitive performances of people with dementia nor in the mental health in the caregivers, but systolic blood pressure, the Family APGAR and overload in the IG did improve.Conclusions: The results suggest that the intervention carried out may be effective on physical activity in both patients and caregivers. It can also improve systolic blood pressure, the Family APGAR and overload in caregivers. This is the first study to implement a primary care intervention aimed at simultaneously increasing physical activity in people with dementia and their relatives. These results reinforce the importance of using objective measures in clinical trials in people with dementia.Trial registration number: NCT 02044887.