ArticleJournal of anatomy2009
Fibre type composition of the human psoas major muscle with regard to the level of its origin.
Article in Journal of anatomy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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Who cites it
36 citing papers in PubMed, 81 citations in OpenAlex.
- Preliminary study on the application of bioimpedance analysis to measure the psoas major muscle in older adults.PloS one · 2023Trial
- Association of Hormonal Activity with CT-Derived Body Composition Characteristics in Patients with Adrenal Adenomas.Journal of clinical medicine · 2026Article
- Prognostic value of automated computed tomography body composition in hepatocellular carcinoma: a volumetric versus single-slice comparison.Journal of liver cancer · 2026Article
- Differences in Psoas Major Muscle Properties Between Elite Athletes with and Without Chronic Low Back Pain.Sports medicine - open · 2026Article
- Neuromechanical basis of region-specific differences and their implications for sport performance and injury prevention: a narrative review.European journal of applied physiology · 2025Review
- Age- and sex-specific relationships between bone mineral density, abdominal fat, and paravertebral muscle.Scientific reports · 2025Article
- Quantitative magnetic resonance imaging parameters of lumbar paraspinal muscles and their relationship to function and ageing in healthy subjects.Quantitative imaging in medicine and surgery · 2025Article
- Microscale velocity-dependent unbinding generates a macroscale performance-efficiency tradeoff in actomyosin systems.Communications biology · 2025Article
- Quantitative magnetic resonance imaging parameters of lumbar paraspinal muscle impairment in myotonic dystrophy type 2 and their evolution with aging.Frontiers in neurology · 2025Article
- Assessment of lumbar paraspinal muscle morphology using mDixon Quant magnetic resonance imaging (MRI): a cross-sectional study in healthy subjects.Quantitative imaging in medicine and surgery · 2024Article
- Prediction of hematologic toxicity in luminal type breast cancer patients receiving neoadjuvant chemotherapy using CT L1 level skeletal muscle index.Scientific reports · 2024Article
- Hepatocellular carcinoma in patients with non-alcoholic fatty liver disease is associated with heterogeneous pattern of fat infiltration in skeletal muscles.European radiology · 2024Article
- Article
- Computed tomography-determined skeletal muscle density predicts 3-year mortality in initial-dialysis patients in China.Journal of cachexia, sarcopenia and muscle · 2023Article
- Muscle group-specific skeletal muscle aging: a 5-yr longitudinal study in septuagenarians.Journal of applied physiology (Bethesda, Md. : 1985) · 2023Article
- Human skeletal muscle-specific atrophy with aging: a comprehensive review.Journal of applied physiology (Bethesda, Md. : 1985) · 2023Review
- Article
- The effect of age on psoas and paraspinal muscle morphology in patients undergoing posterior lumbar fusion surgery.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2022Article
- Noninvasive NMR/MRS Metabolic Parameters to Evaluate Metabolic Syndrome in Rats.Diagnostics (Basel, Switzerland) · 2022Article
- Effects of Low-Intensity and Long-Term Aerobic Exercise on the Psoas Muscle ofInternational journal of molecular sciences · 2022Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of our study was to explore the fibre type composition of the human psoas major muscle at different levels of its origin, from the first lumbar to the fourth lumbar vertebra, and to compare the muscle fibre size and distribution of different fibre types between levels with respect to its complex postural and dynamic function. Muscle samples were collected from 15 young males (younger than 35 years). Serial transverse sections (5 microm) of the samples were cut by cryomicrotome. Type I, IIA and IIX muscle fibres were typed using myosin heavy chain identification. The serial sections were analysed using a light microscope with a magnitude of 100x. The differences between measurements were evaluated using a repeated-measures anova and Scheffé test for post-hoc analysis. Our study showed that the human psoas major muscle was composed of type I, IIA and IIX muscle fibres. It had a predominance of type IIA muscle fibres, whereas type I muscle fibres had the largest cross-sectional area. Type IIX muscle fibres were present as a far smaller percentage and had the smallest cross-sectional area. Moreover, the fibre type composition of the psoas major muscle was different between levels of its origin starting from the first lumbar to the fourth lumbar vertebra. We conclude that the fibre type composition of the psoas major muscle indicated its dynamic and postural functions, which supports the fact that it is the main flexor of the hip joint (dynamic function) and stabilizer of the lumbar spine, sacroiliac and hip joints (postural function). The cranial part of the psoas major muscle has a primarily postural role, whereas the caudal part of the muscle has a dynamic role.
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