TABLE 1.

“PICOS” categories (participants, interventions, comparisons, outcomes, study design) used to determine keywords.

PICOS component	Detail
Participants	Healthy humans (18–45 years)
Interventions	Whole-body endurance performance task (>75 s)
Comparisons	Baseline NIRS-measures before the start of and/or during the whole-body endurance performance task or the control condition (e.g., exercise modality)
Outcomes	Prefrontal cortex oxygenation (NIRS) during whole-body endurance task or performance
Study designs	RCTs, nRCT, nRnCTs

NIRS, Near infrared spectroscopy RCT randomized controlled trial; nRCT non-randomized controlled trials; nRnCTs non-randomized non-controlled trials.