Take the 2-minute tour ×
Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. It's 100% free, no registration required.

Is there any advantage to soft pedaling over coasting? Does it provide any power to moving forward? Is there any aid it gives to your leg muscles recovering?

share|improve this question
7  
What is "soft pedaling?" Does it imply a certain [lack of] resistance from the pedals, or a certain cadence? I haven't heard this term before. –  Alex Jones Jun 3 '13 at 20:14
    
What Pete says -- it helps keep your legs from getting stiff and sore. –  Daniel R Hicks Jun 3 '13 at 22:07

6 Answers 6

up vote 13 down vote accepted

By this do you mean pedalling when unnecessary (and without increasing the bike's speed), for example, on descents?

I will do this on long descents just to keep my legs turning over and to prevent them getting too cold. But I will mix it with coasting.

There is a theory that keeping the legs moving will keep your blood flowing and help pump lactic acid out of the muscles. I can go along with this as I've felt the benefit, or at least I think I have.

I've also heard it argued that it's advantageous as regards making your technique smoother, but I don't think that's particularly proven. But no personal experience, I've never really concentrated on my technique to that extent.

Further, you can talk to racing cyclists who will often say that soft pedalling is preferred when riding in a peloton, purely because coasting implies to other people that you're about to hit the brakes. Again, no personal experience. I know some of the regulars on here are either racers or ex-racers, maybe they can confirm?

In terms of speed (or power) surely it makes no difference, purely by the definition of "soft pedalling"?

share|improve this answer
4  
So you're soft pedaling soft pedaling? –  Daniel R Hicks Jun 3 '13 at 22:06
1  
@DanielRHicks Ba-dum ching! –  jimirings Jun 4 '13 at 0:29
1  
I can verify that even in a duffer's draft line you watch the feet of the guy in front of you and prepare to brake if he stops pedaling. So continuing to pedal slowly would communicate to the person behind you that you're not anticipating a stop. –  Daniel R Hicks Jun 4 '13 at 0:51
1  
@Kaz - That is a myth. The "everyday experience" you talk about is incorrectly attributing the burn of hard working muscles to lactic acid and/or lactate. That is incorrect. –  JohnP Jun 4 '13 at 19:42
1  
@Kaz - Unfortunately, they aren't really sure. The current suspect is calcium leakage from the channels used for muscle activation, or possibly acidic pH of the muscle from proton loss during the ATP->ADP energy breakdown. Pyruvate is one product of the end result of energy production, and it helps stave off acidosis by absorbing the protons which produces lactate. This is turned into fuel by either the Cori or the Krebs cycle. (It's been a while, I think they both can use lactate to produce more ATP, but I could be wrong on that part.) –  JohnP Jun 4 '13 at 20:11

In addition to the response provided by PeteH, I use "soft pedaling" when coasting to a stop on my downtube shifter/derailleur-equipped road bike in order to change gears before a stop.

Some bikes (such as those with internal hubs) do not need any chain motion to shift gears, but my bike does. That's the only concrete reason why I would employ this technique, outside of the points outlined by PeteH.

share|improve this answer

When riding in a group you often find that small changes of speed can mean that you do not need to pedal when it slows down and have small bursts of power when it speeds up. By soft pedaling when the group slows down your legs will already be spinning when its speeds up again.

share|improve this answer

I have often heard, and I agree, that the "muscular pump" is partly responsible for higher blood flow to specific muscle regions during activity. The reason is that between muscular contractions the difference in pressure is such as to draw blood from the arterial side to the venous side. It is a hypothesis and has not been conclusively proved. That may be the reason why some athletes do it, and others don't.

  1. Cassey, Darren; Hunt, Emma (2008), "Cardiovascular function in humans during exercise: role of the muscle pump"
  2. The muscle pump raises muscle blood flow during locomotion.
  3. Clifford PS, Hamann JJ, Valic Z, Buckwalter JB. Counterpoint: The muscle pump is not an important determinant of muscle blood flow during exercise. J Appl Physiol. 2005 Jul;99(1):372-4
share|improve this answer
1  
There's also the effect of the leg motion to work lymph and fluids out of the legs. This is critical during and following periods of intense exercise. –  Daniel R Hicks Jun 4 '13 at 15:31

Just based on personal experience. No to all your questions.

Jacques Anquetil, when time trialing, was rumored to incorporate a soft pedal stroke every few revolutions. With his smooth pedaling and only archival vintage video it's hard to tell. Could be baloney like the special oxygenated recovery beverage the Soviet track cyclist used.

share|improve this answer

Although I'm sure it's not the same, in MTB I use a very brief lapse of smooth pedalling while downshifting in a difficult ascent, it helps reducing noise and wear in the gearset. I accelerate a little before the shift, then, as I actuate the shifter I pedal without load relying on inertia. When I feel the new gear is fully engaged I resume normal pedalling. This is also used when after a fast descent comes a very steep ascent, as you would normally be in a very long (hard) gear, soft pedalling is used to make sure you have the proper (selected) gear engaged when you need it. It is specially useful when the bottom of this kind of transition has technical terrain that would make it impossible to keep all the momentum, forcing you to reduce speed a lot but not to stop nor dismount.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.