sewing machine legs

[mimitabby]

I want to know too!

[bmccasland]

When your leg gyrates uncontollably up and down like a sewing machine. You can usually cause the effect on purpose while sitting by stressing weight on the ball of your feet. Or at least I can.
Having your leg do this by itself while peddling is very annoying.

Beth

[mimitabby]

Oh, i understand what you mean.
I do not know the answer, sounds like muscle fatigue or something.
you're not talking about productive movement, more like your leg shivering.
I actually had to do what you described to understand it.


more people with more wisdom will read this soon.

[midgetcycler]

I was having the numbness problem for a while too. I read somewhere to try to keep your heels down, and this has helped me.

[Pedal Wench]

Oh! I've had that happen while I was hiking. It was a seriously steep downhill section, and I had a heavy pack on. I was also bonking. (Don't start a 90 mile hike after two weeks on a low-carb diet...) A couple of Oreos made everything much better! Seriously, the shaking stopped as soon as I felt the sugar rush kicking in.

[bmccasland]

Thanks for the info - will watch my lungs, nutrition..
And now for more fun, I just found out my Ironhorse bike frame is cracked (took bike in for a tuneup and they discovered the crack). So I'm sidelined until I get a new bike.

[Geonz]

That is, I believe, called "clonus" and it's caused by fatigue. I was really excited to learn what it was from my sister in PT school. You can google it and find out more... I can usually stop it by relaxing the muscles (but not if I'm **too** tired).