These individuals don’t have lower back pain when bending forward and with deadlifting movement buts rather with extension based movements. A lot of times these individuals complain of pain with overhead pressing, especially as the loads get heavy. They may also complain of pain in the back swing (arch) of a kip and during burpees as the lower back arches. They also tend to hurt with any sort of lumbar extension testing like an upward dog.
Having lower back pain with extension can originate from a variety of places. Generally I see this come from people who utilize lumbar spine extension excessively during their lifts.
1) Overhead Press
Some athletes will press overhead with increased lumbar extension.
Log press – requires more lumbar extension than barbell overhead press
2) Bench Press
I also see this in individuals that utilize a large lumbar arch during bench press:
Check the lumbar arch during my bench press
3) Backswing (Arch) on Kipping
The backswing during a kip creates quite a bit of lumbar extension. For some, this can be excessive and problematic.
4) Deadlifts, Squats and Olympic lifts
This concept is a bit tougher to grasp than the previous two. These individuals will generally do 1 of 2 things:
In all of these individuals we are placing the spine in a position of inefficiency (1). (Except for the potential of reliance on passive structures as we’ll discuss later). The spinal musculature is strongest in a neutral position where the lumbar musculature is in an optimal length / tension relationship (Muscles are generally strongest in their mid-range of motion). In the overhead press and bench press examples we’re potentially loading the spine toward end range extension which is implicated in disorders such as spondylolisthesis. With the example of someone who doesn’t finish the lift with their hips we’re potentially overutilizing lumbar extensor muscles and not optimally recruiting the powerful glute musculature. Either way these individuals sometimes end up with extension based low back pain because of their lifting technique.
Now, why does this happen?
This one is a very important variable with those over extenders during overhead movements. If someone is lacking overhead mobility then a common compensation to get your arms fully overhead is lumbar extension. Check the video below for a visual explanation:
The inability to fully extend the hip will also force lumbar spine extension. This is often seen as increased anterior pelvic tilt at the finish position of a deadlift or squat as described above. Here’s an easy assessment to check hip mobility. Make sure the low back doesn’t pop off the table (compensatory lumbar extension) during the assessment. If this happens then you’ve got someone with a hip extension limitation that could be a culprit for their low back pain.
Some folks simply have no idea they are over extenders. Attaining a neutral spine is a skill and some people don’t realize they are not in neutral until they’ve been shown. I often find that these folks also have lumbar flexion limitations and increased lumbar extension passive motion. Given they lack flexion and have excessive extension, a neutral position for them is actually increased lumbar extension. Others simply lack the strength and endurance to maintain a neutral spine.
Two things happen when trying to load excessively.
Applying the right stress in the right amounts while allowing adequate recovery between bouts is a huge player in progression and injury reduction. I’ve written about this extensively in the past and the literature is quite clear (2, 3, 4) in this regard. Proper programming and periodization is enormous.
Looking for Part 2 where we go over prevention and treatment?
Lower Back Pain Party,
Dan Pope DPT, OCS, CSCS, CF-L1
6 Step Guide to Prevent and Treat Extension Based Lower Back Pain (Part 2)
Understanding The Shoulder Pain Epidemic in CrossFit Athletes (Part 3 : Load and Volume Management)
Are Lat Stretches Dangerous? and 5 Better Ways to Gain Overhead Mobility
7 Reasons Why Your Shoulders Get Hurt in the Gym: Part 3
7 Reasons Why Your Shoulders Get Hurt in the Gym: Part 2
5 Reasons to Try These Novel Strict Rope Climb Variations
9 Critical Principles for a Successful Off-season Program (Part 3)
9 Critical Principles for a Successful and Injury Free Off-season (Part 1)