Study: NCT05439239

Intervention type: OTHER
Group type: EXPERIMENTAL
Intervention: Repeated sprint training
Description: Participants will perform 7 weeks of cycling repeated sprint training (2x/week). Inspired oxygen fraction (FiO2) will be set to 14.6% and 20.9% for the hypoxic and normoxic group to simulate an altitude of 3000 m and 300 m, respectively.~The training sessions will consist of a 10-min warm up followed by 3 sets of 5 x 10-s all-out repeated sprints on the cycle ergometer. The number of sets will decrease to two during week 7. Participants will be instructed to try to reach and maintain maximal power output during each sprint. An active recovery at 30% of VO2max will be allowed for 20 s between sprints and for 5 min between sets. The training will end with a 10-min cool down at 30% VO2max. An individual fixed torque of 0.7 will be used during the sprints and it will be reduced to 0.5 Nm/kg at week 7.

Intervention type: OTHER
Group type: PLACEBO_COMPARATOR
Intervention: Repeated sprint training
Description: Participants will perform 7 weeks of cycling repeated sprint training (2x/week). Inspired oxygen fraction (FiO2) will be set to 14.6% and 20.9% for the hypoxic and normoxic group to simulate an altitude of 3000 m and 300 m, respectively.~The training sessions will consist of a 10-min warm up followed by 3 sets of 5 x 10-s all-out repeated sprints on the cycle ergometer. The number of sets will decrease to two during week 7. Participants will be instructed to try to reach and maintain maximal power output during each sprint. An active recovery at 30% of VO2max will be allowed for 20 s between sprints and for 5 min between sets. The training will end with a 10-min cool down at 30% VO2max. An individual fixed torque of 0.7 will be used during the sprints and it will be reduced to 0.5 Nm/kg at week 7.

Intervention type: OTHER
Group type: PLACEBO_COMPARATOR
Intervention: Repeated sprint training
Description: Participants will perform 7 weeks of cycling repeated sprint training (2x/week). Inspired oxygen fraction (FiO2) will be set to 14.6% and 20.9% for the hypoxic and normoxic group to simulate an altitude of 3000 m and 300 m, respectively.~The training sessions will consist of a 10-min warm up followed by 3 sets of 5 x 10-s all-out repeated sprints on the cycle ergometer. The number of sets will decrease to two during week 7. Participants will be instructed to try to reach and maintain maximal power output during each sprint. An active recovery at 30% of VO2max will be allowed for 20 s between sprints and for 5 min between sets. The training will end with a 10-min cool down at 30% VO2max. An individual fixed torque of 0.7 will be used during the sprints and it will be reduced to 0.5 Nm/kg at week 7.

Intervention type: OTHER
Group type: PLACEBO_COMPARATOR
Intervention: Repeated sprint training
Description: Participants will perform 7 weeks of cycling repeated sprint training (2x/week). Inspired oxygen fraction (FiO2) will be set to 14.6% and 20.9% for the hypoxic and normoxic group to simulate an altitude of 3000 m and 300 m, respectively.~The training sessions will consist of a 10-min warm up followed by 3 sets of 5 x 10-s all-out repeated sprints on the cycle ergometer. The number of sets will decrease to two during week 7. Participants will be instructed to try to reach and maintain maximal power output during each sprint. An active recovery at 30% of VO2max will be allowed for 20 s between sprints and for 5 min between sets. The training will end with a 10-min cool down at 30% VO2max. An individual fixed torque of 0.7 will be used during the sprints and it will be reduced to 0.5 Nm/kg at week 7.