Table 2.

Mean time (minutes) to complete measurements for each condition.

Group	21% O2 baseline	15.5% O2	14% O2	13% O2	21% O2 post stress	Totala
mTBI	14.11	13.70	14.20	13.90	13.90	84.70
HC	13.86	14.50	14.20	13.40	13.60	83.10
Total mean	14.90	14.10	14.20	13.70	13.80	83.90

^aNote that the column named Total refers to the duration of the whole data collection session, which included rest breaks between tested conditions; consequently, the total durations are longer than the sum of the durations of the five conditions.