Dear patients, shall we look closely from a modern medical perspective at why long-distance driving that we do heedlessly troubles our neck, shoulders, and lower back so much? When our body sits, it receives considerable strain on the spine along with gravity. In particular, while driving, specific muscles are prone to being overused or stiffened due to actions like gripping the steering wheel and pressing pedals, combined with continuous tension regarding traffic conditions.
First, the main culprit of neck and shoulder pain is forward head posture syndrome. As the head naturally juts forward while driving, the normal C-curve of the cervical vertebrae transforms into straight neck syndrome or a reverse C-curve. A single head weighs about 5 to 7 kg, and research shows that for every 1 cm the neck protrudes forward, the weight the neck bones and surrounding muscles must bear increases by 2 to 3 kg. This excessive burden chronically strains the muscles around the neck, such as the trapezius muscle and sternocleidomastoid, which in turn impedes blood circulation and triggers waste accumulation within the muscles, aggravating pain.
Shoulder stiffness and lower back pain are also closely connected. Sitting while slouching with the pelvis pushed forward during driving breaks the natural S-curve of the lumbar vertebrae. Consequently, the core muscles supporting the spine weaken, causing an imbalance in the muscles around the lumbar vertebra and pelvis, including the iliopsoas muscle and gluteal muscle. Such a misaligned posture exerts abnormal pressure on spinal discs, raising the risk of disc degeneration or herniation, and compresses surrounding nerves to cause not only lower back pain but also leg numbness.
Furthermore, a fixed posture for long periods leads to reduced blood circulation, hindering the supply of oxygen and nutrients to muscle tissue and accumulating fatigue substances like lactic acid, which causes muscle pain and inflammation. Looking neurologically as well, chronic pain activates the sympathetic nervous system, keeping the body in a constant state of tension, which in turn lowers the pain threshold and leads to a vicious cycle where greater pain is felt from even small stimuli. It can even influence anxiety or stress hormone secretion, increasing overall systemic fatigue. Ultimately, driving posture is an important factor that goes beyond simple muscle pain to affect the balance of our entire body and the autonomic nervous system, so it must never be overlooked, right?
