hello.......
This is a classic example of a forum thread gone wrong.
The OP asks if he should be doing calf work, in his topic.
He then asks two questions :
1) "Do calf muscles fitness/strength have a lot to do with on bike performance?"
2) "pro riders usually have great looking calves. Is there a reason for this?"
This has somehow sparked a whole lot of slinging and slanging with quotes pulled from every hole of every sports physiologist and anatomy textbook.
To everyone concerned in this discussion thus far, I appreciate the effort that you all have put into this debate even the minorest of points. I'm guessing you all can take this to another thread soon, because to have a long discussion under the wrong thread title just runs contrary to what you might really want : the attention of people looking for what you're posting.
I'll summarise what I've gleaned from all of the above, for the benefit of whoever's wondering about the answers to the Original Post :
1)
Calf fitness / strength and on-bike performance.
Calf muscle
strength does not play much of a role in on-bike performance. For all the roles that the calf muscles play, the strength required certainly does not compare with a simple heel-raise (tiptoe) done on flat ground off the bike. Each calf in this case needs to lift half your body weight up its full range of motion. I can't do 100 heel-raises without my calves starting to tire, but i can pedal a cadence of 100 per minute for hours on end.
Hence, the strength required in the pedal stroke certainly doesn't rival what the average person can do with his calves and thus probably doesn't need to be worked on.
Calf muscle
fitness certainly plays a role in on-bike performance. Evidenced by the role of the calf muscle in the pedal stroke, which is to
stabilise the mobile ankle on the downstroke, as well as in acting almost isometrically
as the leg pulls backward during the shoe-scraping movement.
For anklers, plantarflexion of the foot also contributes somewhat to power output in the downstroke. It has also been cited that the fact that
calf muscles do cramp in the not-so-fit cyclist, that there is an obvious role that they play in the pedal stroke.
The best way to develop calf muscle performance, thus? Certainly
not weights in the gym (as we can see, strength is not the issue). Just ride more.
2)
Pro riders and nice calves
Pro riders ride many hours a day, daily, many many weeks a year.
As a consequence, they repeat the same motion as described above millions of times a year. As a consequence, their calf muscles do
develop a good tone.
Also, having an
extremely low body fat (4% being the lowest out there as compared to your average 12-20% in a sedentary non-obese person),
sinews are much more obvious through a thin layer of skin and subcutaneous tissue. It's that elementary. It's like how the best way to get visible abs isn't to do crunches, but to drop the gut with lots of cardio exercise.
And so back to the original question,
is it worth working on calf muscles. The answer is a
yes, but not in the gym doing weights, but rather on the bike riding more, with the right pedalling action.
What's the right pedalling action? I'll leave you to the pull up push down thread