Knitting to improve cognition and reduce stress in cancer survivors: A pilot study.

Abstract

e24049 Background: Cancer-related cognitive impairment (CRCI), or “chemo brain,” is defined by mild cognitive changes before, during or after cancer treatment. Objective deficits on neuropsychological tests are mild, while distress about cognitive issues is often high and interventions are lacking. Skill learning, which relies upon implicit memory, promotes functional and structural neuroplasticity. This has not been explored in CRCI. We designed a standardized protocol for learning to knit over 8 weeks and recruited consecutive cancer patients with subjective cognitive concerns. Cognition and perceived stress were assessed before and after learning to knit. Methods: Sixteen cancer survivors (N=16) without any known central nervous system disease or prior knitting experience completed the study. All were female and >80% were Caucasian. Mean age was 54 (SD=7) years. Mean education was 16 (SD=2) years. Neuropsychological tests were selected based on sensitivity to frontal lobe functions and memory and resistance to practice effects. Cognition and perceived stress were measured before and after the intervention, summarized, and compared using paired t-tests. P<0.1 was considered statistically significant. Clinically significant cognitive change was defined by ≥1 standard deviation change between pre- and post-intervention standardized scores. Results: Baseline cognitive function was average across domains. Baseline perceived stress was moderately high. At post-testing, there were statistically significant improvements in perceived stress, cognitive flexibility, and psychomotor speed. After controlling for demographic factors, clinically significant improvements in attention and memory were seen in 38% and 25% of subjects, respectively. 69% had clinical improvement in at least one cognitive domain. Conclusions: Learning to knit produced statistically and clinically significant improvements in cognition and perceived stress in cancer survivors in 8 weeks. Most had clinical improvement in at least one cognitive domain. This skill-based pilot study suggests functional neuroplastic change is possible in selected female, college-educated cancer survivors in a short timeframe and without technology use. Future research on the impact of skill learning on cognition and stress in larger, more diverse samples of cancer survivors may yield much needed interventions for CRCI.[Table: see text]