Impact of Multimedia Messaging Service Education and Exercise Social Support on Physical Activity Among Patients With Type 2 Diabetes: Quasi-Experimental Study.

Background: Social support is one of the interpersonal stimuli that define an individual's predisposition to engage in health-promoting behaviors and is considered a facilitator in improving health habits. Patients with type 2 diabetes mellitus (T2DM) can benefit from educating supportive families and friends on self-care management including exercise behavior. Multimedia messaging service (MMS) could also be an effective method for delivering targeted educational interventions that focus on physical activity (PA).

Objective: This study aimed to assess the effectiveness of MMS educational interventions and perceived social support for exercise on level of PA of patients with T2DM.

Methods: A quasi-experimental pretest-posttest design was conducted to recruit 98 patients with T2DM. The intervention group received MMS education aiming to improve exercise social support and PA level for 2 months, and their counterparts in the control group received the usual routine care. We sent 2 to 3 messages daily for 2 weeks from Saturday to Thursday (12 days total). These messages were a combination of videos and texts, and the evidence-based content of these messages was reviewed and approved by the advisory committee. We randomly assigned eligible patients in a 1:1 ratio into the intervention or the control groups. Participants completed a survey in 3 periods.

Results: There were no significant differences in friends' support, family verbal, practical, or emotional support over time in the intervention group (P>.05). Yet, there was a small effect size (Cohen d) in friends' social support (0.389), family practical support (0.271), and moderate activities (0.386). A medium effect size was found in family verbal (0.463) and emotional (0.468) support. Being married increased the likelihood of friends' support by 2.3 times after intervention (P=.04), whereas rarely doing exercise decreased the likelihood of friends' support by 28% (P=.03) and family practical support by 28% (P=.01). Being female and married increased the likelihood of doing moderate activities by 1.6 times (P=.002) and 1.5 times (P=.049) in the intervention group. Being a housewife decreased the likelihood of doing moderate activities by 20% (P=.001). Finally, being a female with a higher educational level decreased the likelihood of doing hard activities by 20% (P=.04) and 15% (P=.002), respectively.

Conclusions: A theoretically based MMS health education targeting PA levels and social support of family and friends to perform PA seems promising in promoting family and friends' social support and improving PA levels among patients with T2DM. Actively involving family and friends in educational interventions that target PA can have an impact on health-promoting behaviors in patients with diabetes.