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Combined Exercise and Game-Based Cognitive Training Intervention: Correlative Pilot Study of Neurotrophic and
Jamie Myers1, Harsh B Pathak, Jianghua He
1Author Affiliations: University of Kansas School of Nursing (Dr Myers); and Department of Pathology and Laboratory Medicine, University of Kansas Medical Center (Drs Pathak, Ghosh, and Puri); Department of Zoology, Rajiv Gandhi University, Papum Pare, Arunachal Pradesh, India (Dr Ghosh); Department of Biostatistics and Data Science, University of Kansas Medical Center (Dr He); Centura Health-St. Francis Health Services/Parker Adventist Palliative Care (Dr Asakura), Denver, Colorado; and Hiroshima University Graduate School of Biomedical and Health Sciences, Japan (Dr Miyashita).
Background:
Interventions that increase neuroprotective factors and/or decrease inflammatory biomarkers may be effective in improving cognitive function for cancer survivors. Concurrent investigation of potential mechanism(s) to fully understand and refine effective interventions is needed.
Objective:
This correlative prospective substudy was conducted to investigate biomarkers related to potential mechanism(s) for a combined exercise and game-based brain training intervention designed to improve cognitive function in breast cancer survivors.
Interventions/Methods:
Fingerstick bloodspot samples were collected at 3 time points during the randomized, wait-list controlled interventional parent study. Samples were analyzed for neuroprotective factors and inflammatory biomarker levels.
Results:
Insulinlike growth factor 1 (IGF-1) levels significantly increased (P < .01) for the intervention group from baseline to 4 and 16 weeks postintervention. Insulinlike growth factor 1 levels correlated with neurocognitive test performace improvement for Trail Making Test B (r = 0.31, P = .02). This association was not significant in the mixed model. No significant correlation was seen between IGF-1 levels and changes in self-report of cognitive function, activity level, or intervention dose.
Conclusions:
Further investigation of IGF-1 levels is warranted as related to potential mechanisms for the Combined Exercise and Game-based Cognitive Training intervention. Future investigations should involve a larger sample cohort and incorporate objective measures of physical activity and prescribed sampling time in relationship to the most recent performance of the intervention.
Implications For Practice:
Fingerstick bloodspot sample collection is feasible, acceptable, and effective for conducting biomarker research. This methodology minimizes participant burden and discomfort; increases clinical trial access for home, off-site, or rural settings; and facilitates research efforts during times of pandemic restrictions.
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