دورية أكاديمية
Hamstrings passive and active shear modulus: Implications of conventional static stretching and warmup.
| العنوان: | Hamstrings passive and active shear modulus: Implications of conventional static stretching and warmup. |
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| المؤلفون: | Pimenta R; CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal; Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Portugal; Futebol Clube Famalicão - Futebol SAD, Department of Rehabilitation and Performance, Portugal. Electronic address: rjl.pimenta@gmail.com., Correia JP; CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal., Vaz JR; CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal; Egas Moniz - Cooperativa de Ensino Superior, Portugal., Veloso AP; CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal., Herzog W; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Canada. |
| المصدر: | Journal of science and medicine in sport [J Sci Med Sport] 2024 Jun; Vol. 27 (6), pp. 415-421. Date of Electronic Publication: 2024 Feb 28. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Australia Country of Publication: Australia NLM ID: 9812598 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-1861 (Electronic) Linking ISSN: 18781861 NLM ISO Abbreviation: J Sci Med Sport Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Victoria : Elsevier Australia Original Publication: Belconnen : Sports Medicine Australia, [1998?- |
| مواضيع طبية MeSH: | Hamstring Muscles*/physiology , Muscle Stretching Exercises*/physiology , Isometric Contraction*/physiology , Warm-Up Exercise*/physiology, Humans ; Male ; Young Adult ; Adult ; Elastic Modulus ; Ultrasonography |
| مستخلص: | Purpose: This study compares the acute effects of a static stretching and a warmup protocol on the active and passive shear modulus of the hamstring muscles. Methods: Muscle shear modulus was assessed at rest and during isometric contractions at 20 % of maximal voluntary isometric contraction (MVIC). Results: After stretching, the passive shear modulus pattern was not altered, while at 20 % MVIC the biceps femoris short head (BFsh) and semimembranosus showed a shear modulus increase and decrease, respectively, which resulted on BFsh-SM pair differences (pre: 3.8 ± 16.8 vs. post: 39.3 ± 25.1 kPa; p < 0.001; d = 1.66) which was accompanied by a decrease of 18.3 % on MVIC. Following the warmup protocol, passive shear modulus remained unchanged, while active shear modulus was decreased for the semitendinosus (pre: 65.3 ± 13.5 vs. post: 60.3 ± 12.3 kPa; p = 0.035; d = 0.4). However, this difference was within the standard error of measurement (10.54 kPa), and did not impact the force production, since it increased only 1.4 % after the warmup. Conclusions: The results of this study suggest that the passive and active shear modulus responses of the individual hamstring muscles to static stretching are muscle-specific and that passive and active hamstring shear modulus are not changed by a standard warmup intervention. Competing Interests: Declaration of interest statement The authors declare that they have no competing interests. (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Exercise; Lower extremity; Musculoskeletal ultrasound; Shear modulus; Shear wave elastography |
| تواريخ الأحداث: | Date Created: 20240306 Date Completed: 20240607 Latest Revision: 20240607 |
| رمز التحديث: | 20240608 |
| DOI: | 10.1016/j.jsams.2024.02.006 |
| PMID: | 38448345 |
| قاعدة البيانات: | MEDLINE |
Full Text via ClinicalKey 
Full Text Finder | تدمد: | 1878-1861 |
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| DOI: | 10.1016/j.jsams.2024.02.006 |