Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

Lower back position on road bike

Notices
Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Lower back position on road bike

Old 02-24-21, 06:23 AM
  #1  
Flame73
Junior Member
Thread Starter
 
Join Date: Feb 2021
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Lower back position on road bike

May I ask, what's your lower back position on your bike? Is it concave or convex?
I'm asking because if it concave, then I seat on my soft tissue and it's hurt.
But If it's convex, then I feel preasure on my lower back and the lower back is hurt.
What am I doing wrong?
Thanks.
Flame73 is offline  
Old 02-24-21, 07:05 AM
  #2  
datlas 
Beyond Bogus
 
datlas's Avatar
 
Join Date: Dec 2007
Location: Malvern, PA (20 miles West of Philly)
Posts: 34,691

Bikes: 1986 Alpine (steel road bike), 2009 Ti Habenero, 2013 Specialized Roubaix

Mentioned: 483 Post(s)
Tagged: 2 Thread(s)
Quoted: 14456 Post(s)
Liked 2,829 Times in 1,439 Posts
Straight if possible. Try to rotate forward with your pelvis/hips, not your back.
__________________
Originally Posted by rjones28 View Post
Addiction is all about class.
datlas is offline  
Likes For datlas:
Old 02-24-21, 08:44 AM
  #3  
Branko D
Senior Member
 
Join Date: Feb 2018
Posts: 252
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 86 Post(s)
Liked 90 Times in 57 Posts

Taken this summer; I may have moved the saddle a couple of milimetres rearward or such (I can't remember), but that's basically it.

Here's a recent one:


​​​​​​Saddle is angled downwards by about 8 deg and that keeps my dangly bits happy when in the drops and it's really very comfortable.

Last edited by Branko D; 02-24-21 at 09:23 AM.
Branko D is offline  
Old 02-24-21, 09:07 AM
  #4  
Rides4Beer
Senior Member
 
Join Date: Oct 2018
Location: SC
Posts: 1,382

Bikes: SuperSix Evo | Revolt

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 689 Post(s)
Liked 726 Times in 381 Posts
It should be straight, if your back is curved, then you're not bending enough at your hips (or bending too much I guess if it's concave, but that's not usually the problem for most people, usually they bow their back out instead of keeping it straight). If your lower back is hurting, then it probably means you need to strengthen your core in order to be able to hold a proper position.
Rides4Beer is offline  
Old 02-24-21, 09:19 AM
  #5  
Iride01
Hits [ENTER] b4 thinking
 
Iride01's Avatar
 
Join Date: Jul 2017
Location: Mississippi
Posts: 6,344

Bikes: '20 Tarmac Disc Comp '91 Schwinn Paramount '78 Raleigh Competition GS

Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 2473 Post(s)
Liked 1,162 Times in 847 Posts
If you are having your soft tissues smashed when you lean your pelvis forward, then something ain't right with your saddle. Might be it's angle, might have something to do with your reach to the bars which can be several things, including the wrong size bike.

Might just be you have the wrong saddle for you. Too much cut out can be just as bad for some as too little cut out. Some people don't need any.

As for my back, I try to keep it straight. But I don't know that I even have a picture that shows me what my actual position of it is. It's just all in my head! <grin>
Iride01 is offline  
Old 02-24-21, 12:00 PM
  #6  
DaveSSS 
Senior Member
 
Join Date: Sep 2008
Location: Loveland, CO
Posts: 6,281

Bikes: TWO Cinelli superstar disc with SRAM Force AXS

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 604 Post(s)
Liked 264 Times in 213 Posts
I've never read of a concave back. Some people have a relatively flat back on the bike, but most don't. Lance Armstrong's back was curved. I'm sure mine is too. I don't think you can choose. I use a 10cm saddle to bar drop, which is plenty for a 73cm saddle height. I never have any back issues and I'm 67 years old. If I have problems it's upper back/shoulder pain in the early season, caused by not being used to holding my head up for 3 hours or more. Neck strengthening exercises will fix that.
DaveSSS is offline  
Likes For DaveSSS:
Old 02-24-21, 02:08 PM
  #7  
MoAlpha
• —
 
MoAlpha's Avatar
 
Join Date: Jun 2015
Location: Land of Pleasant Living
Posts: 8,002

Bikes: Shmikes

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 5933 Post(s)
Liked 2,626 Times in 1,452 Posts
Originally Posted by DaveSSS View Post
I've never read of a concave back.
I see concave (lordotic) backs, hunched shoulders, and locked elbows on riders, who are trying to sit upright on road bikes, maybe because they lack the hip strength to cantilever and need to support all their weight on their arms. Tends to go with a choppy, up-and-down pedal stroke.
MoAlpha is offline  
Old 02-24-21, 04:47 PM
  #8  
genejockey
Klaatu..Verata..Necktie?
 
genejockey's Avatar
 
Join Date: May 2007
Location: SF Bay Area
Posts: 4,401

Bikes: Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100, Schwinn Circuit, Sante

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 1996 Post(s)
Liked 1,982 Times in 1,015 Posts
I try to ride with a straight back. I can tell when I haven't been because my neck starts to hurt from having to bend farther to keep my head upright.
genejockey is online now  
Old 02-24-21, 07:27 PM
  #9  
David in Maine
Senior Member
 
Join Date: Jan 2017
Location: Maine, USA
Posts: 60
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Liked 37 Times in 26 Posts
Many long distance cyclists ride with gently rounded backs with a bit higher handlebars. Here is Mark Beaumont on his around the world in 80 days record ride. Even on aero bars he has a comfortable, non-extreme position. Having handlebars at a height that allow you to keep your elbows bent when riding on the hoods is important. Saddle set-back and angle is also important to help find comfortable position. I found this blog post by the amazing frame builder David Kirk to be helpful. Riding tip | Kirk Frameworks


David in Maine is offline  
Likes For David in Maine:
Old 02-25-21, 01:31 AM
  #10  
Branko D
Senior Member
 
Join Date: Feb 2018
Posts: 252
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 86 Post(s)
Liked 90 Times in 57 Posts
With aerobars you want the handlebars a bit higher than you would without them to achieve the same torso angle. Looking at the angle Mark's body actually makes, it's pretty similar to what most bike racers would be without aerobars on more "slammed" setups.

As for slightly curved back, you can't tell if yours is like that without someone photographing you "in the moment" or recording yourself on a trainer. My back doesn't feel curved, but when someone takes a picture of me, it invariably is.

​​​​​​
Branko D is offline  
Old 03-01-21, 09:18 AM
  #11  
JackJohn
Member
 
Join Date: Jul 2020
Posts: 41
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
from my experience, not necessarily limited to bike riding, a curved back leads to intervertebral discs compression especially in the lumbar area which after a certain time always ends up in low back pain. When bending, I make sure to keep my back straight, but pelvis needs to be flexible, there are stretching exercises for that. If that position causes uncomfortable feelings on soft tissues or other parts of the body, it could be the saddle form or height, the bike size or geometry, etc.
JackJohn is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.