Jessica Collins Thesis Defense: Effect of HIIT vs. MICT Endurance Training on Critical Power.

This video is from the thesis defense of Jessica Collins, a graduate student in my lab at BYU.
Her study investigated the impact of 8 weeks of High Intensity Interval Training (Cycling) and Moderate Intensity Continuous Training (Cycling) on Critical Power, W' and VO2max.
The overall conclusions of the study was that equal amount of MICT and HIIT will both increase critical power, but HIIT will increase it twice as much.
Other interesting observations include:
1. Changes in VO2max were not related to changes in Critical Power (i.e., you can't predict changes in critical power by what happens to VO2max)
2. Despite all HIIT participants working at 80% of the power they reached during a VO2max test, there was considerable variability in how much Critical Power went up. The magnitude of increase in critical power was strongly related to how intense 80% was relative to critical power. Those performing the workout at a higher percentage of critical power got a greater benefit.
These data suggest that HIIT training is more effective for increasing Critical Power and that it may be more effective to prescribe exercise based off of Critical Power than VO2max.

[@TheMrgranted]

This is an underrated Video on Exercise physiology, great job! Sometimes, just one study can change our whole perspective. Thanks for the great Work !

[@mrwest6150]

So much fantastic information in this presentation. Thank you so much for sharing!

[@benjapolcycling]

Just found this video. Great info. Question professor: any reason to skip the 88% - 105% (sweetspot to superthreshold) in the study (minute 31:00) ? I would like to know more on that region as well. From the line graph, is it really the least improvement intensity region to train or Should have more data points in this region?