What does the research say about Psoas major muscle area?

Psoas major muscle area

There are 3 papers on psoas major muscle area in aging research: 2 observational studies in people, 1 review.

3 papers study it2 findings

“BIA estimation equation for PMM obtained from the MG was: (PMMBIA = 0.183 h2/Z- 0.223 age + 4.443 gender + 5.727, r2 = 0.702, n = 62, SEE = 2.432 cm2, p < 0.001).”

Preliminary study on the application of bioimpedance analysis to measure the psoas major muscle in older adultsPloS one2023doi:10.1371/journal.pone.0275884

Humans2

Associations

Mortality

upin humans1RR 2.37

1 study

Psoas major muscle area predicts mortality in humans (RR = 2.37, 95% CI 1.51-3.73).
“Five studies reported 1-year mortality, demonstrating a significant association between reduced psoas major muscle area and increased long-term mortality (RR = 2.37; 95% CI 1.51-3.73; I 2 = 43.4%; p < 0.001).”
Humansreduced psoas major muscle area in patients undergoing revascularization for peripheral arterial diseasepsoas major muscle1-year
Psoas Major muscle area as a prognostic marker in peripheral arterial disease: a systematic review and meta-analysis
Frontiers in surgeryJul 15, 2026

Bioelectrical impedance analysis

upin humans1

1 study

Bioelectrical impedance analysis predicts psoas major muscle area in humans (normal mobility) (r2 = 0.702, SEE = 2.432 cm2, p < 0.001).
“BIA estimation equation for PMM obtained from the MG was: (PMMBIA = 0.183 h2/Z- 0.223 age + 4.443 gender + 5.727, r2 = 0.702, n = 62, SEE = 2.432 cm2, p < 0.001).”
Human trialnormal mobilityn = 62
Preliminary study on the application of bioimpedance analysis to measure the psoas major muscle in older adults
PloS oneMar 30, 2023

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