مورد إلكتروني
Muscle and Tendon Morphology in Early-Adolescent Athletes and Untrained Peers
| العنوان: | Muscle and Tendon Morphology in Early-Adolescent Athletes and Untrained Peers |
|---|---|
| بيانات النشر: | Humboldt-Universität zu Berlin 2020-08-21 |
| تفاصيل مُضافة: | Mersmann, Falk Laube, Gunnar Bohm, Sebastian Arampatzis, Adamantios |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | This article was supported by the German Research Foundation (DFG) and the Open Access Publication Fund of Humboldt-Universität zu Berlin. Adolescent athletes can feature significantly greater muscle strength and tendon stiffness compared to untrained peers. However, to date, it is widely unclear if radial muscle and tendon hypertrophy may contribute to loading-induced adaptation at this stage of maturation. The present study compares the morphology of the vastus lateralis (VL) and the patellar tendon between early-adolescent athletes and untrained peers. In 14 male elite athletes (A) and 10 untrained controls (UC; 12–14 years of age), the VL was reconstructed from full muscle segmentations of magnetic resonance imaging (MRI) sequences and ultrasound imaging was used to measure VL fascicle length and pennation angle. The physiological cross-sectional area (PCSA) of the VL was calculated by dividing muscle volume by fascicle length. The cross-sectional area (CSA) of the patellar tendon was measured over its length based on MRI segmentations as well. Considering body mass as covariate in the analysis, there were no significant differences between groups considering the VL anatomical cross-sectional area (ACSA) over its length or maximum ACSA (UC: 24.0 ± 8.3 cm2, A: 28.1 ± 5.3 cm2, p > 0.05), yet athletes had significantly greater VL volume (UC: 440 ± 147 cm3, A: 589 ± 121 cm3), PCSA (UC: 31 ± 9 cm2, A: 46 ± 9 cm2), pennation angle (UC: 8.2 ± 1.4°, A: 10.1 ± 1.3°), and average patellar tendon CSA (UC: 1.01 ± 0.18 cm2, A: 1.21 ± 0.18 cm2) compared to the untrained peers (p < 0.05). However, the ratio of average tendon CSA to VL PCSA was significantly lower in athletes (UC: 3.4 ± 0.1%, A: 2.7 ± 0.5%; p < 0.05). When inferring effects of athletic training based on the observed differences between groups, these results suggest that both muscle and tendon of the knee extensors respond to athletic training with radial growth. However, the effect seems to be stronger in the muscle compared to the tendon, with an increase of pennation angle contributing to the marked increase of muscle PCSA. A disproportionate re Peer Reviewed |
| مصطلحات الفهرس: | maturation, exercise, adaptation, imbalance, hypertrophy, KINGS project, 610 Medizin und Gesundheit, ddc:610, article, doc-type:article, publishedVersion |
| URL: | |
| الإتاحة: | Open access content. Open access content (CC BY 4.0) Attribution 4.0 International https://creativecommons.org/licenses/by/4.0 |
| ملاحظة: | application/pdf English |
| أرقام أخرى: | FBU oai:edoc.hu-berlin.de:18452/22947 urn:nbn:de:kobv:11-110-18452/22947-0 1664-042X 10.3389/fphys.2020.01029 1366073142 |
| المصدر المساهم: | BIBLIOTHEK DER HUMBOLDT-UNIVERSITAT BER From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1366073142 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |