Back and Obliques HW 118

What do the Obliques do?

The obliques are a group of muscles located on the sides of the abdomen, playing a crucial role in core stability, movement, and overall physical function. There are two main types of oblique muscles: the external obliques and the internal obliques. These muscles work together to facilitate a variety of movements and provide support for the spine and torso.

1. External Obliques

The external obliques are the larger, more superficial muscles of the two oblique groups. They are situated on each side of the abdomen, running diagonally from the lower ribs down to the pelvis. These muscles are responsible for several key movements and functions:

• Trunk Rotation: One of the primary functions of the external obliques is to rotate the trunk. When you twist your torso to the left, the right external oblique contracts, and vice versa. This movement is essential in activities like swinging a golf club, throwing a ball, or even turning to look behind you.
• Lateral Flexion: The external obliques also facilitate lateral flexion of the spine, which means bending the torso to the side. When one side contracts, it pulls the torso toward that side. This action is involved in movements like side bends or reaching down to pick something up from the floor.
• Bilateral Contraction: When both sides of the external obliques contract simultaneously, they help flex the spine forward, as in the movement of a crunch or sit-up. This action is important for strengthening the core and supporting the spine.
• Support and Stability: The external obliques contribute to the stability of the core by helping to maintain proper posture and alignment. They play a significant role in stabilizing the pelvis and lower back, especially during dynamic movements or when lifting heavy objects.

2. Internal Obliques

The internal obliques lie beneath the external obliques and run perpendicular to them, creating a crisscross pattern of muscle fibers. Despite being deeper, they perform similar functions to the external obliques, with some unique contributions:

• Trunk Rotation: Like the external obliques, the internal obliques are involved in trunk rotation. However, they work in the opposite direction: when you rotate your torso to the left, the left internal oblique contracts. This coordinated action with the external obliques allows for smooth and controlled rotational movements.
• Lateral Flexion: The internal obliques also assist in lateral flexion of the spine. When one side contracts, it works with the external oblique on the same side to bend the torso laterally. This dual contribution provides a greater range of motion and control during side bending movements.
• Bilateral Contraction: When both sides of the internal obliques contract simultaneously, they help compress the abdomen and assist in spinal flexion, much like the external obliques. This action is essential for core stability and plays a role in movements like sit-ups and leg raises.
• Breathing Support: The internal obliques also play a role in respiration. During exhalation, they help compress the abdominal cavity, pushing air out of the lungs. This function is especially important during forced exhalation, such as when blowing out candles or during intense physical exertion.

3. Overall Function and Importance

The oblique muscles are integral to the overall function of the core. They contribute to the strength, stability, and mobility of the torso, which is essential for maintaining proper posture, preventing injury, and performing everyday activities. Strong obliques help protect the spine by distributing forces evenly across the core, reducing the risk of lower back pain and injury.

In addition to their role in movement, the obliques are important for athletic performance. They enable powerful rotational movements necessary for sports like tennis, baseball, and martial arts. Training the obliques can enhance athletic ability, improve balance, and increase core strength.

Conclusion

Well, know you have a much better understanding of what the obliques do. The obliques are vital muscles that play a key role in trunk rotation, lateral flexion, and overall core stability. Whether you’re performing daily tasks, engaging in sports, or working out, the obliques are constantly at work, helping to protect the spine, maintain posture, and facilitate movement. Strengthening these muscles is essential for a strong, functional core and overall physical health.