What specific biomechanical advantages do shorter cranks provide for Zone 2 sessions, and how do these benefits translate to improved efficiency and reduced metabolic cost in this specific intensity domain?
Isnt it true that shorter cranks, by virtue of their reduced moment arm, necessitate a greater emphasis on hip and knee flexion, potentially leading to a more efficient distribution of muscle activation patterns? And wouldnt this, in turn, result in a lower energetic cost of movement, as the body is able to more effectively utilize its stored elastic energy and capitalize on the stretch-shortening cycle?
Furthermore, do shorter cranks not also permit a greater range of motion at the knee and hip joints, allowing the rider to take advantage of the increased mechanical advantage conferred by the circular motion of the pedal stroke? And might this not lead to a more even distribution of power output throughout the pedal stroke, thereby reducing the peak power requirements and allowing the rider to maintain a more consistent pace?
How do proponents of shorter cranks for Zone 2 sessions address the potential drawbacks of reduced crank arm length, such as decreased leverage and reduced torque production? Is it not possible that the benefits of shorter cranks in this context are largely offset by the need to increase cadence, thereby negating any potential gains in efficiency?
What role, if any, do shorter cranks play in altering the riders movement patterns and neuromuscular recruitment strategies during Zone 2 sessions? Do shorter cranks, by virtue of their unique demands on the musculoskeletal system, stimulate the development of more efficient and effective movement patterns, or do they simply represent a novel stimulus to which the body adapts through existing physiological mechanisms?
Ultimately, what is the empirical evidence supporting the use of shorter cranks for Zone 2 sessions, and how do the findings of these studies align with our current understanding of the biomechanics and physiology of cycling?