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dc.contributor.authorSantos, Esthevan Machado dospt_BR
dc.contributor.authorLanferdini, Fábio Junerpt_BR
dc.contributor.authorSilva, Edson Soares dapt_BR
dc.contributor.authorGeremia, Jeam Marcelpt_BR
dc.contributor.authorSonda, Francesca Chaidapt_BR
dc.contributor.authorFletcher, Jarred R.pt_BR
dc.contributor.authorVaz, Marco Aureliopt_BR
dc.contributor.authorPeyré-Tartaruga, Leonardo Alexandrept_BR
dc.date.accessioned2023-06-22T03:31:16Zpt_BR
dc.date.issued2022pt_BR
dc.identifier.issn1664-042Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/259294pt_BR
dc.description.abstractPurpose: This study aimed to determine whether triceps surae’s muscle architecture and Achilles tendon parameters are related to running metabolic cost (C) in trained long-distance runners. Methods: Seventeen trained male recreational long-distance runners (mean age = 34 years) participated in this study. C was measured during submaximal steady-state running (5 min) at 12 and 16 km h–1 on a treadmill. Ultrasound was used to determine the gastrocnemius medialis (GM), gastrocnemius lateralis (GL), and soleus (SO) muscle architecture, including fascicle length (FL) and pennation angle (PA), and the Achilles tendon cross-sectional area (CSA), resting length and elongation as a function of plantar flexion torque during maximal voluntary plantar flexion. Achilles tendon mechanical (force, elongation, and stiffness) and material (stress, strain, and Young’s modulus) properties were determined. Stepwise multiple linear regressions were used to determine the relationship between independent variables (tendon resting length, CSA, force, elongation, stiffness, stress, strain, Young’s modulus, and FL and PA of triceps surae muscles) and C (J kg–1m–1) at 12 and 16 km h–1. Results: SO PA and Achilles tendon CSA were negatively associated with C (r2 = 0.69; p < 0.001) at 12 km h–1, whereas SO PA was negatively and Achilles tendon stress was positively associated with C (r2 = 0.63; p = 0.001) at 16 km h–1, respectively. Our results presented a small power, and the multiple linear regression’s cause-effect relation was limited due to the low sample size. Conclusion: For a given muscle length, greater SO PA, probably related to short muscle fibers and to a large physiological cross-sectional area, may be beneficial to C. Larger Achilles tendon CSA may determine a better force distribution per tendon area, thereby reducing tendon stress and C at submaximal speeds (12 and 16 km h–1). Furthermore, Achilles tendon morphological and mechanical properties (CSA, stress, and Young’s modulus) and triceps surae muscle architecture (GM PA, GM FL, SO PA, and SO FL) presented large correlations with C.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofFrontiers in physiology. Columbus. Vol. 12, (2022), article 767445, p. [1-14]pt_BR
dc.rightsOpen Accessen
dc.subjectCorrida de longa distânciapt_BR
dc.subjectLong-distance runnersen
dc.subjectCalf musclesen
dc.subjectMúsculospt_BR
dc.subjectMuscle architectureen
dc.subjectArquitetura muscularpt_BR
dc.subjectAchilles tendon propertiesen
dc.subjectTendõespt_BR
dc.subjectMetabolismopt_BR
dc.subjectMetabolic costen
dc.titleTriceps surae muscle-tendon properties as determinants of the metabolic cost in trained long-distance runnerspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001148304pt_BR
dc.type.originEstrangeiropt_BR


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