The effectiveness of motivational interviewing on self-management in older adults with hypertension and frailty: study protocol for a randomized controlled trial
Shi Jia et al. · 2026 · Frontiers in Public Health · Open access
Background: Frailty and hypertension frequently coexist in older adults, posing substantial challenges to self-management and increasing the risk of adverse outcomes. Standard health education has shown limited effects in this population, and motivational interviewing may support sustained behavior change, yet evidence from randomized controlled trials remains scarce. Methods: This prospective, single-blind, parallel-group randomized controlled trial aims to evaluate the effectiveness of a Transtheoretical Model-based motivational interviewing intervention on self-management behaviors and related clinical outcomes in community-dwelling older adults with hypertension and frailty. A total of 72 participants will be recruited in Changchun, China, and randomized 1:1 to receive a 12-week Transtheoretical Model-based motivational interviewing intervention or usual health education. The primary outcome is hypertension self-management behavior, secondary outcomes include blood pressure, frailty status, quality of life, and safety outcomes assessed at five time points over 36 weeks. Intention-to-treat analysis will serve as the primary analytical strategy. Discussion: We hypothesize that the intervention will significantly improve self-management behaviors and produce favorable changes in blood pressure, frailty status, and quality of life. This study will provide practical guidance for self-management in older adults with hypertension and frailty, clarify the value of motivational interviewing in supporting sustained behavior change, and inform the development of more targeted intervention strategies for this population in community settings. Clinical trial registration: Identifier ChiCTR2500114706.