General Discussion Triathlon Talk » Leg and foot going numb/tingling feeling biking Rss Feed  
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2014-01-14 8:41 AM

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Subject: Leg and foot going numb/tingling feeling biking
I really ramped up my biking the last 10 weeks or so and have a feeling this is causing my symptoms. But about 3-4 weeks ago I noticed my foot had a numb feeling to it about 15 mins into biking and some tingling feelings. It seemed to get worse as the weeks passed by. I was fine off the bike. I didn't change any of my setup on the bike. I did get a new saddle back in September so I don't know if this could be the cause or not.

It also seems to affect my running too. I noticed the same sensations start about 10 mins into the run but not as bad biking. I have been dealing with hip/glute issues too but I was mostly running at the time. I have an appointment with an ortho sports med doc next week but I want some ideas to bring up what this might be.


2014-01-14 8:43 AM
in reply to: MRDAVIDALEXANDER

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Subject: RE: Leg and foot going numb/tingling feeling biking

how tight are your shoes?

2014-01-14 8:53 AM
in reply to: dmiller5

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Subject: RE: Leg and foot going numb/tingling feeling biking
Originally posted by dmiller5

how tight are your shoes?




Not tight at all. I thought this too but it was still doing it when I loosened them.
2014-01-14 8:54 AM
in reply to: MRDAVIDALEXANDER

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Subject: RE: Leg and foot going numb/tingling feeling biking
My theory is that I completed a marathon in mid October and ramped up my biking too quickly after this. I didn't give myself enough recovery and either my back is weak which is cause some nerve compression. Or my muscle are super tight/strong from the hard biking that its compressing some nerves.
2014-01-14 8:58 AM
in reply to: MRDAVIDALEXANDER

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Subject: RE: Leg and foot going numb/tingling feeling biking

Is your new saddle thinner than the previous one? You might be riding a tad lower than before. This would affect your knee angle and, in return, affect your blood circulation. Is the newer saddle at the same angle as the older one? If the nose is pointing up, this too, can affect your posture. Your hips might be lower, while your body is still trying to reach down toward the cockpit.

You mentioned that the sensation happens 15 minutes in. That's very early into a ride. You should be able to make small adjustments while riding until you fond a sweet spot.

2014-01-14 9:03 AM
in reply to: vertseven

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Subject: RE: Leg and foot going numb/tingling feeling biking
Originally posted by vertseven

Is your new saddle thinner than the previous one? You might be riding a tad lower than before. This would affect your knee angle and, in return, affect your blood circulation. Is the newer saddle at the same angle as the older one? If the nose is pointing up, this too, can affect your posture. Your hips might be lower, while your body is still trying to reach down toward the cockpit.

You mentioned that the sensation happens 15 minutes in. That's very early into a ride. You should be able to make small adjustments while riding until you fond a sweet spot.




Thanks. It is thinner than the previous one. The new saddle is at same angle. Should I raise the seat some?


2014-01-14 9:04 AM
in reply to: vertseven

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Subject: RE: Leg and foot going numb/tingling feeling biking
Originally posted by vertseven

Is your new saddle thinner than the previous one? You might be riding a tad lower than before. This would affect your knee angle and, in return, affect your blood circulation. Is the newer saddle at the same angle as the older one? If the nose is pointing up, this too, can affect your posture. Your hips might be lower, while your body is still trying to reach down toward the cockpit.

You mentioned that the sensation happens 15 minutes in. That's very early into a ride. You should be able to make small adjustments while riding until you fond a sweet spot.




I'm also doing all my biking on a trainer with a road bike.
2014-01-14 9:05 AM
in reply to: MRDAVIDALEXANDER

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Subject: RE: Leg and foot going numb/tingling feeling biking

You should raise it by the difference in saddle thickness

2014-01-14 9:14 AM
in reply to: MRDAVIDALEXANDER

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Subject: RE: Leg and foot going numb/tingling feeling biking
If all your training that is causing the numbness is happening on a trainer - try standing up on the pedals and moving around a little more every 10 minutes or so.

My gut reaction to this is you need to get refit - your fit will change over time, especially if you changed the saddle.
2014-01-14 9:22 AM
in reply to: MRDAVIDALEXANDER

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Subject: RE: Leg and foot going numb/tingling feeling biking
Originally posted by MRDAVIDALEXANDER

My theory is that I completed a marathon in mid October and ramped up my biking too quickly after this. I didn't give myself enough recovery and either my back is weak which is cause some nerve compression. Or my muscle are super tight/strong from the hard biking that its compressing some nerves.


I had similar issues in 2009. Pain started in my hip during runs, but never bothered me on the bike. It progressed quickly for me to hurting most(not real bad but annoying) of the time, until one day when I could not stand up. Lots of pain in the low back and down the left leg. For me the bike was the only time it did not hurt, but he PT explained this to me about 3 months into it.

Basically everything is connected and as my legs got stronger and my quads and hamstrings got tighter they pulled on the hip flexors which pulled through back slower compressing discs in my back until one popped. I wound up with one herniated disc and 2 compressed discs.

Basically: legs were strong, and I was not stretching enough. core was not strong enough to support it.

Depending on which area of your disc is compressing depends on what is going to hurt, for me when I bent over on the bike it was relieving the pressure on the collapsed part of the disc therefore biking did not hurt.


Months of recovery work to get back to normal, now years later I can start to feel when things are getting too tight and ramp up my core work and stretching.

Most of this came from the Physical Theripist. The Dr's ordered an MRI and wanted to cut me open and pin it. No one is cutting into my spine if I can control it in another way!
2014-01-14 10:08 AM
in reply to: mike761

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Subject: RE: Leg and foot going numb/tingling feeling biking

Same issue- bought Superfeet Insoles (Blue ones). Problem solved!



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