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dc.contributor.author
Feldman, Sara
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dc.contributor.author
Capozza, Ricardo Francisco
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dc.contributor.author
Mortarino, Pablo A.
dc.contributor.author
Reina, Paola Soledad
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dc.contributor.author
Ferretti, Jose Luis
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dc.contributor.author
Rittweger, Jörn
dc.contributor.author
Cointry, Gustavo Roberto
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dc.date.available
2023-05-09T17:52:25Z
dc.date.issued
2012-08
dc.identifier.citation
Feldman, Sara; Capozza, Ricardo Francisco; Mortarino, Pablo A.; Reina, Paola Soledad; Ferretti, Jose Luis; et al.; Site and sex effects on tibia structure in distance runners and untrained people; Lippincott Williams; Medicine And Science In Sports And Exercise; 44; 8; 8-2012; 1580-1588
dc.identifier.issn
0195-9131
dc.identifier.uri
http://hdl.handle.net/11336/196887
dc.description.abstract
Purpose: The purpose was to study the relationship between mechanical environment and bone structure by comparing the tibia in people with different physical activities. Materials and Methods: Indicators of bone mass (bone mineral content), bone material "quality" (cortical volumetric mineral density (vBMD)), and diaphyseal design (endocortical and periosteal perimeters (EcPm and PoPm, respectively), cortical thickness (CtTh), circularity, and bending and torsion cross-sectional moments of inertia (CSMIs)) were determined in serial peripheral quantitative computed tomography scans taken at 5% steps of the tibia in 40 voluntary men and women age 25-40 yr who were either physically inactive or experienced distance runners (n = 10-12 per group). Results: Bone mass and design indicators were higher in runner than in nonrunner men, with a variable effect size along the tibia. In the distal tibia, runners had enhanced bone mineral content and CtTh (resistance to compression), but EcPm, PoPm, circularity, and CSMI were unaffected. In the midshaft, CSMIs (resistance to bending/torsion) were enhanced in runners, whereas bone mass was unaffected. In the proximal third, effects were observed for CtTh, EcPm, and PoPm. In female runners, these benefits were restricted to CSMIs only. Cortical vBMD, naturally lower in men than in women, was reduced in runners of either sex. DISCUSSION: Results are coherent with previous findings in physically inactive people and with Frost's mechanostat theory. The observed group differences in cortical vBMD could reflect an increase in intracortical porosity (enhanced remodeling for damage repair), eventually compensated biomechanically by CSMI improvements. The sex specificity of exercise effects may suggest the interference by the endocrine environment. Results confirm that the mechanical environment is a strong determinant of regional tibia structure and suggest that the endocrine environment may reduce the effects of physical interventions on bone health in fertile women.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Lippincott Williams
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BONE STRENGTH
dc.subject
BONE STRUCTURE
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EXERCISE AND BONE
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OSTEOPENIA
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OSTEOPOROSIS BONE BIOMECHANICS
dc.subject.classification
Otros tipos de Medicina Clínica
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dc.subject.classification
Medicina Clínica
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dc.subject.classification
CIENCIAS MÉDICAS Y DE LA SALUD
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dc.title
Site and sex effects on tibia structure in distance runners and untrained people
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-05-09T14:57:42Z
dc.journal.volume
44
dc.journal.number
8
dc.journal.pagination
1580-1588
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Philadelphia
dc.description.fil
Fil: Feldman, Sara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina. Universidad Nacional de Rosario; Argentina
dc.description.fil
Fil: Capozza, Ricardo Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina. Universidad Nacional de Rosario; Argentina
dc.description.fil
Fil: Mortarino, Pablo A.. Universidad Nacional de Rosario; Argentina
dc.description.fil
Fil: Reina, Paola Soledad. Universidad Nacional de Rosario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina
dc.description.fil
Fil: Ferretti, Jose Luis. Universidad Nacional de Rosario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina
dc.description.fil
Fil: Rittweger, Jörn. University of Manchester; Reino Unido
dc.description.fil
Fil: Cointry, Gustavo Roberto. Universidad Nacional de Rosario; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina
dc.journal.title
Medicine And Science In Sports And Exercise
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.lww.com/acsm-msse/Fulltext/2012/08000/Site_and_Sex_Effects_on_Tibia_Structure_in.22.aspx
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1249/MSS.0b013e31824e10b6
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