MRI-Based Regional Muscle Use during Hamstring Strengthening Exercises in Elite Soccer Players
| Autor: | Richard M. Linnehan, Valter Di Salvo, Luis Suarez-Arrones, Richard B. Kreider, Per A. Tesch, Alberto Mendez-Villanueva, Gil Rodas, Rodrigo Fernandez-Gonzalo |
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| Rok vydání: | 2016 |
| Předmět: |
Male
Hamstring muscles Muscle Physiology Muscle Functions Physiology lcsh:Medicine Hamstring Muscles Biceps Diagnostic Radiology 0302 clinical medicine Animal Cells Functional Magnetic Resonance Imaging Medicine and Health Sciences Public and Occupational Health lcsh:Science Musculoskeletal System Brain Mapping Multidisciplinary Muscles Radiology and Imaging Magnetic Resonance Imaging Sports Science Transverse Relaxation Time Strength Training Musculoskeletal injury Legs Anatomy Cellular Types Research Article Sports Adult medicine.medical_specialty Adolescent Strength training Imaging Techniques Strengthening exercises Slow-Twitch Muscle Fibers Neuroimaging Research and Analysis Methods Muscle Fibers Pelvis 03 medical and health sciences Young Adult Diagnostic Medicine Soccer medicine Humans Sports and Exercise Medicine Exercise Behavior Hip business.industry lcsh:R Limbs (Anatomy) Resistance training Biology and Life Sciences 030229 sport sciences Physical Activity Cell Biology Skeletal Muscle Fibers medicine.disease Physical Fitness Physical therapy Recreation lcsh:Q business 030217 neurology & neurosurgery Hamstring Neuroscience |
| Zdroj: | PLoS ONE PLoS ONE, Vol 11, Iss 9, p e0161356 (2016) |
| ISSN: | 1932-6203 |
| Popis: | The present study examined site-specific hamstring muscles use with functional magnetic resonance imaging (MRI) in elite soccer players during strength training. Thirty-six players were randomized into four groups, each performing either Nordic hamstring, flywheel leg-curl, Russian belt or the hip-extension conic-pulley exercise. The transverse relaxation time (T2) shift from pre- to post-MRI were calculated for the biceps femoris long (BFl) and short (BFs) heads, semitendinosus (ST) and semimembranosus (SM) muscles at proximal, middle and distal areas of the muscle length. T2 values increased substantially after flywheel leg-curl in all regions of the BFl (from 9±8 to 16±8%), BFs (41±6–71±11%), and ST (60±1–69±7%). Nordic hamstring induced a substantial T2 increase in all regions of the BFs (13±8–16±5%) and ST (15±7–17±5%). T2 values after the Russian belt deadlift substantially increased in all regions of the BFl (6±4–7±5%), ST (8±3–11±2%), SM (6±4–10±4%), and proximal and distal regions of BFs (6±6–8±5%). T2 values substantially increased after hip-extension conic-pulley only in proximal and middle regions of BFl (11±5–7±5%) and ST (7±3–12±4%). The relevance of such MRI-based inter- and intra-muscle use in designing more effective resistance training for improving hamstring function and preventing hamstring injuries in elite soccer players should be explored with more mechanistic studies. |
| Databáze: | OpenAIRE |
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