What specific physiological adaptations do you believe Zwifts 4-week FTP booster targets to produce measurable gains in functional threshold power, and how do these adaptations manifest in terms of increased aerobic capacity, neuromuscular efficiency, or lactate threshold?
In particular, are the workouts within the plan designed to elicit specific physiological responses, such as increased mitochondrial density, enhanced buffering capacity, or improved muscle fiber recruitment patterns, and if so, how do these responses contribute to the overall goal of boosting FTP?
Additionally, what role do you think periodization, progressive overload, and recovery strategies play in the success of the 4-week FTP booster, and how do the plans designers balance the need for intense interval training with the need for adequate recovery time to allow for physiological adaptation?