Fysiqal
Anatomy
Anatomy
Transverse Abdominis
Evidence-grounded — sourced from Fysiqal's fitness knowledge graph· 1 min read
abdominalstransverse-abdominisabdominal-compressionlower-back-stability
0% read · 1 min left
In one line
The deepest abdominal muscle; compresses the abdomen, supports the abdominal contents, and aids lower-back stability.
Detail
The transverse abdominis is helpful for compressing the other abdominal muscles (during heavy breathing). It helps support the abdominal contents and prevents bulging of the abdomen. Together with the internal oblique (the inner abdominal muscles), it stabilizes the lower back: the greater the tone in these inner abdominal muscles, the greater the stability in the lower back, because they fix the thoracolumbar fascia.
Key facts
- Compresses the other abdominal muscles (during heavy breathing).
- Supports abdominal contents; prevents abdominal bulging.
- With the internal oblique, stabilizes the lower back via the thoracolumbar fascia.
Connections
- abdominals — group it belongs to.
- internal-oblique — co-stabilizes the lower back.
- erector-spinae — fascia link to lower-back muscles.
- abdominal-work-misconceptions — the "only tummy-thinning effect" and "sit-ups strengthen the back" myths this muscle's function explains.
SourceReference manual
p.552p.764
Cited authorities in source: Ellison (1991).
Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.
Explore related topics
Atlas Connections
Abdominals (Midsection)Closely related
Four muscles — rectus abdominis, external oblique, internal oblique, transverse abdominis — that flex, rotate, and laterally flex the trunk and compress the abdomen.Erector Spinae (Sacrospinalis)
Three muscle-group columns (iliocostalis, longissimus, spinalis) running skull-to-sacrum that extend, laterally flex, and rotate the vertebral column.Internal ObliqueClosely related
A flat abdominal sandwiched between the external obliques and transversus; its fibers run at right angles to the external oblique and it twists the trunk to the same side.Abdominal Work — Common Misconceptions (Gym & Class Setting)
Abdominal work may be the single best fitness activity a trainer can prescribe, but its benefits are confused, invisible in the short term, and usually trained the wrong way — four specific myths explain why.