Weak Association between Vastus Lateralis Muscle Fiber Composition and Fascicle Length in Young Untrained Females
| Autor: | Spyridon Methenitis, Giorgos Karampatsos, Constantinos Papadopoulos, Gregory C. Bogdanis, Thomas Mpampoulis, Gerasimos Terzis, Polyxeni Spiliopoulou, Angeliki-Nikoletta Stasinaki, G.K. Papadimas |
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| Rok vydání: | 2021 |
| Předmět: |
Vastus lateralis muscle
Physical Therapy Sports Therapy and Rehabilitation Isometric exercise medicine.disease_cause Article 03 medical and health sciences 0302 clinical medicine Jumping Animal science medicine Orthopedics and Sports Medicine Fiber Leg press muscle power business.industry 030229 sport sciences fiber type composition muscle architecture GV557-1198.995 Lean body mass Fascicle length Muscle architecture business rate of force development 030217 neurology & neurosurgery Sports |
| Zdroj: | Sports Volume 9 Issue 5 Sports, Vol 9, Iss 56, p 56 (2021) |
| ISSN: | 2075-4663 |
| DOI: | 10.3390/sports9050056 |
| Popis: | The aim of the study was to investigate the relationships between vastus lateralis muscle fiber length and fiber type composition in individuals with minimal exposure to systematic resistance/power training. In sixty female physical education students (age: 21.03 ± 2.1 years, body weight: 59.8 ± 9.7 kg, body height: 166.2 ± 6.5 cm), with no experience in systematic training, lean body mass, VL muscle architecture and fiber composition type, countermovement jumping (CMJ) performance, and isometric leg press rate of force development were evaluated. Data were analyzed for all participants, as well as two equally numbered groups assigned according to their maximum countermovement jumping power (High-Power or Low-Power group). Significant but low correlations were found between type II muscle fiber percentage and fascicle length (N = 60, p < 0.05). Significant correlations were found between type IIa and IIx muscle fiber percentage cross-sectional area (%CSA) and fascicle length (N = 60 r = 0.321, and r = 0.378 respectively, p < 0.05). These correlations were higher for the High-Power group (r = 0.499, and r = 0.522 0.05), and lower, and nonsignificant, for the Low-Power group. The best predictor of strength/power performance was the lean body mass of the lower extremities (r = 0.389–0.645, p < 0.05). These results suggest that in females with minimal exposure to systematic training, fascicle length may be weakly linked with type II fiber areas, only in females with high-power profiles. |
| Databáze: | OpenAIRE |
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