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Rodrigues-de-Souza DP, Casas-Castro A, Carmona-Pérez MC, García-Luque L, Alcaraz-Clariana S, Garrido-Castro JL, Alburquerque-Sendín F. Between-sexes differences in lumbopelvic muscle mechanical properties of non-climacteric adults: a cross-sectional design. Sci Rep 2023; 13:21612. [PMID: 38062151 PMCID: PMC10703780 DOI: 10.1038/s41598-023-48984-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/02/2023] [Indexed: 12/18/2023] Open
Abstract
The lumbopelvic muscle mechanical properties (MMPs) are clinically relevant, but their dependence on sex remains unknown. Therefore, this study aimed to identify if lumbopelvic MMPs depend on the sex in a young adult population. Thirty-five healthy nulliparous women and 35 healthy men were analyzed (age range: 18-50). Lumbopelvic MMPs, that is, tone, stiffness, elasticity, relaxation and creep, assessed with MyotonPRO®, and pelvic floor (PF) health questionnaires were compared between-sexes. Intra-group correlations between sociodemographic and clinical data, and MMPs were also determined. The MMPs of PF were different between healthy non-climacteric adults of both sexes, with women showing higher values of tone and stiffness and lower values of elasticity and viscoelastic properties than men (in all cases, p < 0.03). At lumbar level, tone and stiffness were higher for men at both sides (in all cases, p < 0.04), and relaxation was lower at left side (p = 0.02). The MMPs showed few correlations with sociodemographic data within women. However, within males, there were positive correlations for PF stiffness and viscoelastic parameters with age, BMI and function (0.334 < r < 0.591) and, at lumbar level, negative correlations for tone and stiffness ( - 0.385 < r < -0.590) and positive correlations for viscoelastic properties (0.564 < r < 0.719), with BMI. This indicated that between-sexes differences of lumbopelvic MMPs depend on the specific location of assessment in healthy non-obese young individuals. Women show higher tone and stiffness and lower elasticity and viscoelasticity than men, at PF level.
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Affiliation(s)
- Daiana Priscila Rodrigues-de-Souza
- Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of Córdoba, 14004, Córdoba, Spain
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Córdoba, Spain
| | - Azahara Casas-Castro
- Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of Córdoba, 14004, Córdoba, Spain
| | - María Cristina Carmona-Pérez
- Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of Córdoba, 14004, Córdoba, Spain
| | - Lourdes García-Luque
- Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of Córdoba, 14004, Córdoba, Spain
| | - Sandra Alcaraz-Clariana
- Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of Córdoba, 14004, Córdoba, Spain
| | - Juan Luis Garrido-Castro
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Córdoba, Spain
- Department of Computer Science and Numerical Analysis, Rabanales Campus, University of Córdoba, 14071, Córdoba, Spain
| | - Francisco Alburquerque-Sendín
- Department of Nursing, Pharmacology and Physical Therapy, Faculty of Medicine and Nursing, University of Córdoba, 14004, Córdoba, Spain.
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), 14004, Córdoba, Spain.
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