Pure science, really? Well, combined with individual cycling experience and one’s perceptions, there is enough science in the following clips to give one the confidence to make pertinent personal choices. Over the years to meet my changing physiology I have adjusted my riding style, crank length, top tube length, saddle height, and gear ratios. Cycling adaptations are key to maintain cycling motivation and excitement.
A quick note re lactic acid theory, http://www.ncbi.nlm.nih.gov/pubmed/11579166/ Nielsen et al in 2001 and recent research require us to again reevaluate our notions of lactic acidosis and muscle fatigue. There has been some research that suggests lactate acid can be beneficial to intense exercise metabolism. Go figure.
Does crank length matter?
https://www.youtube.com/watch?v=eMAxH_Ud8YE
Does cadence matter?
https://www.youtube.com/watch?v=-jh-5TYAtJI&feature=iv&src_vid=bT-JOg_oLJk&annotation_id=annotation_914349511
What is more efficient higher or lower saddle?
https://www.youtube.com/watch?v=bT-JOg_oLJk&list=PLUdAMlZtaV11LAqXNLDr38oTXh9RuyiRY&index=1&feature=iv&src_vid=eMAxH_Ud8YE&annotation_id=annotation_4218608499
Which is more efficient clips-in or flat pedals?
https://www.youtube.com/watch?v=CNedIJBZpgM&list=PLUdAMlZtaV11LAqXNLDr38oTXh9RuyiRY&index=3&feature=iv&src_vid=-jh-5TYAtJI&annotation_id=annotation_4189258479
Excess body weight versus excess bike weight
https://www.youtube.com/watch?v=5DRQwKREgvI&index=14&list=PLUdAMlZtaV11LAqXNLDr38oTXh9RuyiRY
Aero or light bike?
https://www.youtube.com/watch?v=mlz52XW6CMM&feature=iv&src_vid=5DRQwKREgvI&annotation_id=annotation_652646
My first fat tire.
https://www.youtube.com/watch?v=yuPnfpfpCdU
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