ESPN Sport Science video: BJ Penn with fNIR

Sport Science brings in former UFC Lightweight champion B.J. Penn to demonstrate the impact of the rear-naked choke on host John Brenkus and uses the fNIR System from BIOPAC to measure oxygen supply to the frontal cortex during the exercise; EEG and heart rate were also recorded. John’s heart rate drops from 124 to 80, respiration drops 55%, and electrical activity in the brain reduces by 65% during the 9-second choke. John’s body reboots after the choke out to normal levels in just 3 seconds. Click here to watch Sport Science: BJ Penn.

BJPenn-fnir fNIR EEG and heart rate during BJ Penn choke out fNIR analysis of BJ Penn chock out on SportScience host

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