Fig. 1.

Study Design and participants. (a) Saliva, stool, and blood samples were collected from collegiate football players athletes (n ​= ​33) during the football season. Transcranial doppler imaging measurements were performed, and protein analysis was completed using a commercial ELISA and single molecule array. Bacterial DNA was extracted and 16S rRNA sequencing analysis was performed using the Nanopore platform. (b) Breakdown of samples received from each of the participants in the study at each of the designated timepoints.