A214: Effects of Tai Chi and Brisk Walking on Sensation in PN Elders

Peripheral neuropathy (PN) is a prevalent neurological disorder, affecting 26–39.2% of adults aged 65 and older due to peripheral nerve degeneration and associated conditions like diabetes. PN leads to sensory impairments, including diminished tactile sensation, increased fall risk, and mobility issues. Tai Chi (TC) is a low-impact exercise shown to enhance sensory function and balance in healthy older adults, but its effects on PN patients remain unclear. Brisk walking (BW) is a widely recommended exercise for older adults, yet its impact on sensory function in PN is not well-established. This study compares TC and BW interventions on tactile sensation in older adults with PN. A randomized controlled trial was conducted with 40 older adults (≥65 years) diagnosed with PN, randomly assigned to TC or BW groups. Both groups participated in supervised sessions, three times per week for eight weeks, including a 5-minute warm-up, 40-minute exercise, 10-minute rest, and 5-minute cool-down. Tactile sensation was assessed using the Semmes-Weinstein Monofilament at five-foot locations. Data were analyzed using a two-way repeated measures ANOVA, with post hoc tests applied when significant interactions (p < 0.05) were detected. Significant interactionwere observed at the heel (p = 0.044, η ² p = 0.137) and the fifth metatarsal head (p = 0.034, η ² p = 0.151), with the TC group showing greater reductions in tactile sensation thresholds at week 9 (heel: p < 0.001, d = 1.32; fifth metatarsal: p < 0.001, d = 1.4) than BW (p > 0.05; p = 0.025, d = 0.78). TC demonstrated greater improvements in tactile sensation among PN compared to BW. This effect may be attributed to TC’s unique movement structure, which includes multiple rotational movements using the heel as a pivot point, increasing heel stimulation, and potentially enhancing tactile sensation. Additionally, TC incorporates lateral movements that engage mechanoreceptors on the lateral aspect of the foot, which are less frequently activated in other forms of exercise. This targeted activation may contribute to improved cutaneous sensitivity in the lateral foot region.