The multifidus and transversus abdominis are two important muscles that play a role in supporting the vertebrae of the spine and maintaining spinal stability. They work together in a coordinated manner to provide core stability and help prevent bulging discs. Here’s how they contribute to spine support:
1. Multifidus: The multifidus is a deep muscle that runs along the length of the spine. It consists of several individual muscle bundles located on each side of the vertebrae. The primary function of the multifidus is to stabilize and control movement between individual vertebrae.
– Activation: The multifidus exhibits anticipatory activation, meaning it contracts milliseconds before movement is initiated. This pre-activation helps stabilize the spine and create a supportive environment before any movement occurs. It provides segmental control and stability to counteract excessive or uncontrolled movement of the vertebrae.
– Localized support: The multifidus is particularly important in providing localized stability and support to the lumbar spine (lower back). It acts as a deep stabilizer, working synergistically with other muscles to maintain the integrity of the spinal segments and prevent excessive strain on the intervertebral discs.
2. Transversus Abdominis: The transversus abdominis is a deep abdominal muscle that wraps around the abdomen like a corset. It plays a crucial role in core stability and works in tandem with the multifidus.
– Activation: Similar to the multifidus, the transversus abdominis exhibits anticipatory activation. It contracts milliseconds before movement to create intra-abdominal pressure and stabilize the core. This contraction provides a stable foundation for movement and helps protect the spine.
– Dynamic support: The transversus abdominis works in conjunction with other abdominal muscles to provide dynamic stability to the spine. Its activation helps control excessive movement, maintain proper alignment, and reduce the risk of excessive load on the intervertebral discs.
Summary: Training that focuses on the proper activation of the multifidus and transversus abdominis is important, because these muscles contribute to spinal stability and help avoid excessive strain on the intervertebral discs. Their anticipatory activation ensures that the spine is supported and prepared for movement, reducing the risk of disc bulges or other spinal injuries.
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