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The transversus abdominis (TrA) muscle is the deepest of the abdominal muscles, extending between the ribs and the pelvis. It wraps around the trunk from front to back and is important for maintaining normal abdominal tension and increasing intra-abdominal pressure. The transversus abdominis is a broad paired muscular sheet found on the lateral sides of the abdominal wall. It is one of the main core muscles that support the lumbopelvic region and is vital for back health. Training the transversus abdominis can help flatten the belly and strengthen the core.
| Characteristics | Values |
|---|---|
| Location | The deepest layer of the abdominal wall, beneath the rectus abdominis |
| Function | Provides postural support, helps contain and support internal organs, stabilises the pelvis and spine, and assists with breathing |
| Appearance | Fibres run horizontally, similar to a back support belt |
| Nerve Supply | Lower intercostal nerves, iliohypogastric nerve, ilioinguinal nerve |
| Blood Supply | Lower posterior intercostal arteries, subcostal arteries, superior and inferior epigastric arteries, circumflex iliac arteries, posterior lumbar arteries |
| Exercises | Vacuum exercise, plank, side plank, string method |
| Weakness Indicators | Inability to hold in stomach, low back fatigue, bulge below the navel |
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What You'll Learn
The transversus abdominis is the deepest abdominal muscle
The transversus abdominis is a deep abdominal muscle and is the deepest of the six abdominal muscles. It is a broad, paired muscular sheet found on the lateral sides of the abdominal wall. The transversus abdominis muscle layer is located deep to (layered below) the internal oblique muscle. It is also known as the transverse abdominis, transversalis muscle, and TVA.
The transversus abdominis extends between the ribs and the pelvis, wrapping around the trunk from front to back. The fibres of this muscle run horizontally, similar to a back support belt. The fibres of the transversus abdominis are oriented transversely, perpendicular to the linea alba.
The transversus abdominis is important for maintaining normal abdominal tension and increasing intra-abdominal pressure. It helps to compress and retain the contents of the abdomen, as well as assisting in exhalation. The transversus abdominis also helps a pregnant person to deliver a child.
The TVA acts as a girdle or corset, creating hoop tension around the midsection. It is vital to back and core health and helps to pull in what would otherwise be a protruding abdomen.
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It wraps around the trunk from front to back
The transversus abdominis (TrA) muscle is the deepest abdominal muscle. It extends between the ribs and the pelvis, wrapping around the trunk from front to back. The fibres of this muscle run horizontally, similar to a back support belt.
The transversus abdominis is a broad, paired muscular sheet found on the lateral sides of the abdominal wall. It is the only abdominal muscle whose fibres run horizontally. The fibres run transversely in a medial and anterior direction, perpendicular to the linea alba. The muscle arises as multiple muscular slips from the inner surfaces of the lower six costal cartilage, from the 5th to 10th costal cartilage.
The transversus abdominis plays a crucial role in stabilising the core and supporting abdominal organs. It helps to contain and support the organs located inside the trunk, including the stomach, intestines, pancreas, liver, gallbladder and other organs. It also helps to maintain abdominal wall tension.
The transversus abdominis is important for maintaining normal abdominal tension and increasing intra-abdominal pressure. It helps to stabilise the spine and trunk during walking, sitting down, standing up or twisting from side to side. A properly developed transversus abdominis is vital to keeping you injury-free and avoiding back pain.
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It is important for maintaining normal abdominal tension
The transverse abdominal muscle (TVA), also known as the transverse abdominis, transversalis muscle, and transversus abdominis muscle, is a muscle layer of the front and side abdominal wall. It is the deepest layer of the lateral abdominal wall and is positioned deep to the internal oblique muscle.
The transverse abdominal muscle plays a crucial role in maintaining normal abdominal tension. Along with other abdominal muscles, it helps to contain and support the organs located inside the trunk. It extends between the ribs and the pelvis, wrapping around the trunk from front to back. The muscle fibres run horizontally, similar to a back support belt.
A weak TVA may leave you prone to injuries, especially in your back. A properly developed TVA is essential for keeping you injury-free and preventing back pain. Anytime you bend, squat, or run, your TVA helps transfer any load or force away from your lower back. It stabilises your spine and pelvis, acting as a natural weight-lifting belt. The TVA helps keep your cervical spine (neck) in a neutral position while also preventing your lumbar spine (lower back) from excessive flexion or extension.
Weakness in the TVA or other abdominal muscles increases the risk for abdominal hernias. The TVA also helps increase intra-abdominal pressure, which is beneficial for forceful expiration, coughing, defecation, and the final stages of childbirth.
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It is one of the main core muscles
The transverse abdominis (TrA) muscle is one of the five main abdominal muscles. It is the deepest of the abdominal muscles, lying beneath the rectus abdominis. It extends between the ribs and the pelvis, wrapping around the trunk from front to back. The fibres of the transverse abdominal muscle run horizontally, providing postural support and helping to contain and support the organs located inside the trunk.
The TVA is an important core muscle. It helps to stabilise the pelvis and lower back during most movements. It also helps to keep the cervical spine (neck) in a neutral position, preventing the lumbar spine (lower back) from excessive flexion or extension. A weak TVA may leave you prone to back injuries.
The TVA is also responsible for maintaining the proper placement of abdominal contents, increasing intra-abdominal pressure, and supporting the lumbopelvic region during movement.
To strengthen the TVA, exercises such as the side plank, regular plank, and bridging can be performed. These exercises help to activate the TVA indirectly and improve core stability.
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It can be activated through exercises like planking
The transverse abdominal muscle, also known as the transversus abdominis, is the deepest abdominal muscle. It wraps around the trunk of the body, from the front to the back, and provides postural support. It also helps to contain and support the organs located inside the trunk.
The transverse abdominal muscle is important for maintaining normal abdominal tension and increasing intra-abdominal pressure. It is activated during everyday movements, such as walking or running, and plays a crucial role in protecting and stabilising the spine. A weak transverse abdominal muscle can lead to lower back pain and injury.
To strengthen the transverse abdominal muscle, specific exercises that target this muscle are necessary. Planking is one of the best exercises for activating the transverse abdominal muscle indirectly. To perform a plank, start in a push-up position with your elbows and forearms at your side and your palms facing down. Push your hands into the ground and raise your torso off the ground, ensuring your hands and shoulders are aligned, your legs are straight, your feet are hip-width apart, and your core is engaged. Hold this position for as long as you can while maintaining proper form and keeping your core engaged.
During the plank exercise, focus on drawing your abdominals inward and pulling your belly button in or toward your spine, which is known as "abdominal bracing." This movement directly engages the transverse abdominal muscle. By incorporating planking into your workout routine, you can effectively activate and strengthen the transverse abdominal muscle, improving your core stability and reducing the risk of back injury.
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Frequently asked questions
The transverse abdominal muscle is located in the abdomen, immediately inside the internal oblique muscle.
The transverse abdominal muscle is also known as the transverse abdominis, transversalis muscle, transversus abdominis muscle, and TVA.
The transverse abdominal muscle is considered one of the most important abdominal muscles for preventing back pain. It also helps to protect internal organs by holding them in place and supports the torso by maintaining abdominal wall tension.
The most well-known method of strengthening the transverse abdominal muscle is the vacuum exercise.
Failure to engage the transverse abdominal muscle during higher-intensity lifts can encourage injury to the spine.
