Why you get lower back pain
Lower back pain is one of the most common health problems in society today, with a large 50-80% of us being affected at some point in our lives (Cassidy et al 2005). Lower back pain is seen in both athletes as well as non athletes (Carl 2006). There is very little knowledge and research of what actually causes lower back pain but here are some factors, which are believed to play a role.
We live a more sedentary lifestyle these days, more people prefer to sit at computers than keep active and a lot of jobs involve sitting at desks. Less physical activity is believed to be linked to increased risk of lower back pain (Dijken et al 2008). Long periods of sitting in a ‘C’ shape at our desks loads up our spine with loading of our discs and the compressive forces on facets. When we relax our back our tummy chills in a ‘ hang over the top of the trouser look’ (Key 2007). We need to think about posture as a slumped position causes an increase of 10x fluid loss from our disc nucleus compared to sitting in a relaxed upright position (Key 2007).
Less spinal control. The hypermobile person (a person with increased laxity in joints) is at increased risk of lower back pain. Movement is good in the spine but too much can cause too much stress such as wear and tear on the spine. Lumbar stabilisation should be used for patients with increased range of motion of the spine to help control the movements of the spine (Cressey 2009). Poor function of spinal stabilisation muscles = overloading of ligaments and lumbo-pelvic function during activities (Liebenson 2004). Muscles, ligaments and thoracolumbar fascia aid in the stabilisation of the pelvis. Decreased spinal stabilisation increases our chances of injury. The more mobile person should focus on the deep intrinsic stabilisers: transverse abdominis, internal oblique abdominis and multifidus. Other areas that should also be strengthened are the glutes, quadtratus lumborum and latissimus dorsi to aid in stabilisation.
Don’t just think about the area of pain that is causing the problem, decreased ankle range of motion can also cause issues. Patients with less ankle dorsiflexion (pointing toes to the ceiling) are at increased risk of lower back pain, which can be seen in athletes who squat. This is due to their knees not being able to come sufficiently forwards and once maxed out at their hip range of motion they then use their lower back. Ankle mobility should be 100% implemented in a rehab programme to help maintain a healthy back (Cressey 2009).
Abdominal weakness (Key 2007). Abdominal strength is very important for a healthy spine. Stronger muscles create an increased intra-abdominal pressure, lengthening the spine and increasing tensile strength therefore, increasing stability of each spinal segment. Abdominal co-contraction with back musculature decreases compressive pressure on discs and the pelvis (Key 2007). As already mentioned about our protracted periods of sitting and being slumped over, our abdominals fall asleep and allow our lumbar spinal segments to increase pressure towards our sacrum, increasing disc compression. Your core allows movement and improves the quality of this; decreased core increases the chance of injury and decreases your quality of movement. Your core is also important for preparation for unexpected situations; for example when you loose technique due to being tired, your core will prevent you from injury (Sheppard, 2015). To improve your midline strength, exercises should not be performed stationary e.g. the plank, this decreases joint nutrition, and works your ability to stay still. Every day we are moving, lifting objects, changing direction, our core needs to be switched on at all times to protect our spine and allow us to perform our natural spinal movements.
Movement is VERY important for a healthy spine. When you injure your back your first reaction is to not move. Instead of bending your back when going to pick something up, you will begin to go into a more squat position to protect your back. You are actually making your back worse, starving your discs in your back from their drink which is released when spinal movement occurs. This will then increase stiffness of your spine which could then lead to spinal instability (Key 2007). When you stop using the natural range of motion of your back you then begin to use the wrong muscles, increasing your chances of weakness in deep spinal muscles and abdominals.
There are many ways to help maintain a healthy spine so here is a video with some ideas for you to have a play around
Bridging: This helps you regain segmental control and allows spinal segments to move individually.
Rocking along the spine: This is a form of mobilisation, helping release muscles, releases locked facets and provides active decompression of the spine.
Functional exercises should be used to enable people with lower back pain to feel benefit throughout their day. Exercises such as lunging, squats and pulling and pushing movements should be used to ensure you are engaging your core as much as possible.
A lunge for example will show whether someone has good core, if you struggle with the balance of lunge, it is likely you need to work on your midline.
Postural setting. Posture is not stationary; we need to ensure we are performing the correct posture throughout movements and throughout the day (Lo 2015). Its not about forcing our shoulders back, then relaxing to take tension off as this can make you weaker and increase your chance of injury if you become too tense. It’s all about glute activation, ab activation and another good way to think about it is feeling like you’re a puppet getting pulled on by your string to make you taller. This has to be done through repetition to enable your brain to learn your new natural posture (Lo 2015). Now perform any exercise such as lifting an object, lunging, squatting with this new relaxed but tight posture and you will feel stronger and more mobile.
Thank you for reading.
Stay positive, listen to your body, keep movement within pain limits and KEEP YOUR BACK HEALTHY!