Whats the real impact of varying trainer resistance levels on indoor Zone 2 training intensity, and isnt it time we stopped generalizing the effects of resistance on power output and heart rate?
Doesnt a higher resistance level on a trainer consistently result in a higher perceived exertion, even if the actual power output remains the same as a lower resistance level? And if so, can we really trust our perceived exertion to accurately gauge our training intensity in Zone 2?
Isnt it also possible that the relationship between trainer resistance and power output is more nuanced than were led to believe? For example, what if a lower resistance level actually requires more power output to maintain a given speed, due to the increased cadence and reduced mechanical advantage?
And what about the effect of trainer resistance on muscle recruitment patterns? Doesnt a higher resistance level tend to recruit more slow-twitch fibers, which are more efficient at generating power at lower intensities? And if so, doesnt this mean that training in Zone 2 with a higher resistance level is actually less effective at improving cardiovascular fitness and endurance?
Can we also discuss the limitations of using trainer resistance as a proxy for outdoor riding conditions? Doesnt the lack of wind resistance, rolling resistance, and changes in gradient on a trainer make it difficult to accurately simulate the physiological demands of outdoor riding? And if so, isnt it time we stopped relying on trainer resistance as the sole determinant of training intensity?
Isnt it time we started considering the complexities of indoor training and the many variables that influence our physiological responses, rather than simplistically assuming that higher trainer resistance always equals higher training intensity?