Web-Based Gamified Auditory-Cognitive Dual-Task Training for Older Adults With Age-Related Hearing Loss: Pilot Randomized Controlled Trial.

Background: Everyday listening ability is essential for individual health and well-being. Age-related hearing loss (ARHL) is associated with reduced communication engagement, social isolation, loneliness, cognitive decline, and increased dementia risk. Interventions that simultaneously target auditory processing and cognitive function, particularly within engaging and ecologically valid contexts, may offer greater benefits than unimodal approaches. However, culturally adapted, web-based, gamified auditory-cognitive dual-task training (ACDT) tailored for older adults with ARHL remains underexplored. At the time of this writing, few auditory or auditory-cognitive training programs are available in Chinese languages, creating linguistic and cultural barriers for older adults. Objective: This study aimed to (1) assess the feasibility and acceptability of home-based ACDT among older Chinese adults with ARHL and (2) examine its preliminary effects on global cognition, hearing, social engagement, and loneliness. It was hypothesized that the intervention group would demonstrate greater improvements in global cognition, hearing, and social engagement than the control group. Methods: Sixty community-dwelling older adults with mild-to-moderate ARHL were randomized 1:1 to either the ACDT group or a waitlist control group in a single-blinded pilot randomized controlled trial. Demographic data and outcome measures were collected at baseline, week 6, and week 12. Postintervention interviews were conducted to assess the feasibility and acceptability of ACDT. Results: A total of 60 participants were randomized (mean age 67.65, SD 4.78 years; 45/60, 75% male). ACDT demonstrated high feasibility and acceptability. The ACDT group showed significant improvements in focused attention (mean change=-0.15; P=.02; d=-0.46) and divided attention (mean change=-0.21; P=.002; d=-0.63). Significant cognitive improvements on the Hong Kong-Montreal Cognitive Assessment were identified in naming (r=0.37; P=.05) and visual cognition (r=0.44; P=.02) in the intervention group, while no significant improvements were found in the control group. Both groups reported significant decreases in emotional hearing handicap, with slightly greater improvement in the intervention group (r=0.39; P=.03) than in the control group (r=0.37; P=.04). Linear mixed model analysis revealed a small to moderate group effect (Cohen d=0.38) for 5-minute delayed recall on the Auditory Verbal Learning Test, with the fixed effects explaining 69% of the variance (marginal R²=0.69). A significant time×group interaction was observed for left-ear thresholds (P=.01). Qualitative analysis identified three key themes: (1) intervention coherence and participants' affective attitude toward ACDT; (2) perceived benefits in cognition, information acquisition, and self-awareness from ACDT; and (3) perceiving ACDT as less burdensome with enhanced self-efficacy. Conclusions: Future iterations should incorporate artificial intelligence-enhanced personalization. Large-scale randomized controlled trials involving diverse samples and active control conditions are needed to confirm sustained effects on auditory and cognitive health, dual-task listening-cognitive abilities, and real-world functioning.