The values (means ± SD) of the EMG and the TSI responses of the athletes (n = 10) during the 3x3-min DP intervals in association with the different oxygen contents during the intervals and recovery periods.

c indicates significant difference to NoNo at the same time pointd indicates significant difference to HoHOX at the same time pointNoNo: normoxia with normoxic recovery; NoHOX: normoxia with hyperoxic recovery; HoHo: hypoxia with hypoxic recovery; HoHOX: hypoxia with hyperoxic recovery.