Lower back pain

I've never entirely been a stranger from back pain when cycling, but only mild and infrequent. e.g. If I've changed to a lower position it was normal to have some twinges for the first ride but be ok after that.
The present problems go back to last summer. I was having problems with my knees after long rides really hurting, so I went and had a bike fit, apart from a few minor adjustments the main thing was my saddle was way too high - by 23mm - so he adjusted that to the correct height, which felt very strange indeed, but I stuck with it.
However over the next few weeks, my knee pain had gone but had been replaced by pain in my lower back - not intense just enough for it to be quite distracting. Mostly on longer rides or related to the amount of effort I'm putting in. The worst was on a local sportive where I was putting in quite a bit of effort but after 20 miles had to stop as the pain was getting too much.
Since then I've raised the saddle back up a little, which has helped but not solved the issue. I've done the usual things of fitting a shorter stem to bring the bars closer, rotating the bars up, and I've got shorter cranks.
But the problems remain. It seems to be related to effort more than time, e.g. I did a steady flat 100km and had no issues at all, but I did a slightly more hilly 100km and I started having issues. This week I've been out a couple of times at lunchtimes - just 40 minutes per ride but putting in a lot of effort which is still hurting now
- If it matters I ride a Scott CR1 road bike. 52cm, 165mm cranks, 75mm stem. Myself I've just turned 37 years old and I'm 5'6".
The present problems go back to last summer. I was having problems with my knees after long rides really hurting, so I went and had a bike fit, apart from a few minor adjustments the main thing was my saddle was way too high - by 23mm - so he adjusted that to the correct height, which felt very strange indeed, but I stuck with it.
However over the next few weeks, my knee pain had gone but had been replaced by pain in my lower back - not intense just enough for it to be quite distracting. Mostly on longer rides or related to the amount of effort I'm putting in. The worst was on a local sportive where I was putting in quite a bit of effort but after 20 miles had to stop as the pain was getting too much.
Since then I've raised the saddle back up a little, which has helped but not solved the issue. I've done the usual things of fitting a shorter stem to bring the bars closer, rotating the bars up, and I've got shorter cranks.
But the problems remain. It seems to be related to effort more than time, e.g. I did a steady flat 100km and had no issues at all, but I did a slightly more hilly 100km and I started having issues. This week I've been out a couple of times at lunchtimes - just 40 minutes per ride but putting in a lot of effort which is still hurting now

- If it matters I ride a Scott CR1 road bike. 52cm, 165mm cranks, 75mm stem. Myself I've just turned 37 years old and I'm 5'6".
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When I first got my bike it had a 90mm stem and I have trouble reaching it, so I then went with 80mm and now 75mm.
It's part of the reason I'm a little confused as to which way to go as most solutions for back pain are just don't lean over quite as much so bring the bars closer, higher up etc.
I'm just curious by the way, every time these threads come up, people quite rightly go into great detail about bike fit but never mention frequency of rides. For me when i rode weekend only, I'd get back pain, now I try to ride every day and get no pain on shorter rides.
Now that being said, I did a 4 hour ride last Sunday on tt bike pushing big gears, big effort and low low cadence (it's a bad habit I have) and I had back pain.
So for me it seems. back pain is a 'fitness issue'
It's mostly been once a week on a Sunday morning. During the summer months I can put in a weekday ride. Although just this week I've started bringing my bike to work to do a 10 mile loop at lunchtime which after doing that twice on Tuesday and Wednesday am still sitting here with back pain on Thursday morning.
Interesting point, it's definitely related to effort rather than duration. e.g. I can potter around turning small gears not going to fast and it not be a big issue. Or like the sportive I was doing it started twinging because I'd been putting in a lot of effort - frustrating because my legs and everything else feel good.
N+1
No. I've been looking at the youtube videos etc but there's a bewildering array of stretches.
Doesn't really matter which ones you do, as long as you're stretching the relevent muscles. Just do them right.
N+1
Also, Tom Danielson's 'Core Advantage' gets a lot of recommendations. There is a chunk viewable as a preview, and quite a few of the exercises shown on Youtube. I've been doing a few regularly and they help me.
One thing is that my wife has got an exercise bike, which has about as upright a position and it's possible to get, and yet I've had some of the worst back pain by using that!
If you're only doing one, core is probably best. While stretching is the easier fix for isolated issues. But both together are the ideal.
In terms of bike fit again. Is it possible for lower back pain to be caused by the bars being too close or your not stretched out enough? As all the advice is always shorter stem higher bars and apart from that being bad for aero the bars already feel a bit close.
Edit: this article does suggest too short a stem can be an issue http://www.bikeradar.com/gear/article/h ... ain-22868/
1) Ibuprofen solves most problems upto about 5 hours, then you're treading a line...
2) I don't get how static stretching solves a dynamic problem like lower back pain.
3) The more I ride and the harder I ride the less chance I get of back pain.
4) Bike position is critical in that 1cm extra reach causes problems where as 1cm extra drop causes no problems up until an extreme point is reached.
5) I had a bad bout of sciatica last year. I couldn't walk, sitting was painful but I managed a century in the aero position as this was the best relief I could get. This perhaps wrongly gives me the idea that position is bit of a red herring, a good position on the bike can be quite comfortable.
6) To be investigated, I have a nasty, lazy, low cadence habit, I stick both levers in the ego gear position and just ride. On future long hard rides I'm going to force myself to be less lazy with the right hand and see if this solves the back pain at 3hr problem.
and all this should contain a 'FOR ME'
however these exercises are really all you need.
https://www.youtube.com/watch?v=AmgQ_cjAPU4
I use variations on these with most of my pateints.
yeah me neither, that's why I cautiously typed what I did, but do you really think it's as easy as a few stretches?
Also give the person that did the fit a call and explain what has happened to see what they advise. Unfortunately you have made some adjustments since which is a shame or they could have advised directly from their bike fit. Having the saddle too high will cause all kinds of issues compared to it being slightly low. At least your knees are better now !
The only thing I can really do is stop cycling for a week or so and see if it clears up. Then if I go for another ride and it starts up again I know it's that.
the majority of backpain can be resolved through exercises like the ones posted above (which are strength exercises rather than stretches).
however there are occasional pathological states that need greater intervention and management so it is worth finding a good physio osteopath etc who can advice if things are not resolving.
back pain is a black box, it is poorly understood and for the most part badly managed by the majority of practitioners.
for the most part self management with strength work is the ideal solution.
Why is strength work required ?
post cycle stretch 3-5 min: (apologies for the sound quality - I have squeaky floor boards)
https://www.youtube.com/watch?v=QgEbH31FbWs
twice a week stretch
https://www.youtube.com/watch?v=WElIDKxmyQo
Stretching & Workout Vids
A lower back is only as strong as its weakest link. I have always found simple core exercises (the plank etc.) to be sufficient for keeping it in good condition. Believe it or not the root cause of chronic (on the bike only) lower back pain is natural pedalling, because with maximum force applied vertically downward, the lower back is put under continuous stress. The solution can be found in this man's technique in which max force is applied equally in both a forward (over TDC) and downward direction, transferring all this stress to the powerful hips.
https://www.youtube.com/watch?v=7hh2DcgpnkU
Stretching & Workout Vids