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MRI-Based Regional Muscle Use during Hamstring Strengthening Exercises in Elite Soccer Players.
PLoS One. 2016; 11(9):e0161356.Plos

Abstract

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.

Authors+Show Affiliations

Football Performance & Science Department, ASPIRE Academy, Doha, Qatar.Football Performance & Science Department, ASPIRE Academy, Doha, Qatar. Sports Department, Pablo de Olavide University, Sevilla, Spain.Medical Department, Futbol Club Barcelona, Barcelona, Spain.Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.National Aeronautics and Space Administration, Johnson Space Center, Houston, Texas, United States of America.Department of Health and Kinesiology, Texas A&M University, College Station, Texas, United States of America.Football Performance & Science Department, ASPIRE Academy, Doha, Qatar. Department of Movement, Human and Health Sciences, University of Rome "Foro Italico", Rome, Italy.

Pub Type(s)

Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

27583444

Citation

Mendez-Villanueva, Alberto, et al. "MRI-Based Regional Muscle Use During Hamstring Strengthening Exercises in Elite Soccer Players." PloS One, vol. 11, no. 9, 2016, pp. e0161356.
Mendez-Villanueva A, Suarez-Arrones L, Rodas G, et al. MRI-Based Regional Muscle Use during Hamstring Strengthening Exercises in Elite Soccer Players. PLoS One. 2016;11(9):e0161356.
Mendez-Villanueva, A., Suarez-Arrones, L., Rodas, G., Fernandez-Gonzalo, R., Tesch, P., Linnehan, R., Kreider, R., & Di Salvo, V. (2016). MRI-Based Regional Muscle Use during Hamstring Strengthening Exercises in Elite Soccer Players. PloS One, 11(9), e0161356. https://doi.org/10.1371/journal.pone.0161356
Mendez-Villanueva A, et al. MRI-Based Regional Muscle Use During Hamstring Strengthening Exercises in Elite Soccer Players. PLoS One. 2016;11(9):e0161356. PubMed PMID: 27583444.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - MRI-Based Regional Muscle Use during Hamstring Strengthening Exercises in Elite Soccer Players. AU - Mendez-Villanueva,Alberto, AU - Suarez-Arrones,Luis, AU - Rodas,Gil, AU - Fernandez-Gonzalo,Rodrigo, AU - Tesch,Per, AU - Linnehan,Richard, AU - Kreider,Richard, AU - Di Salvo,Valter, Y1 - 2016/09/01/ PY - 2016/06/22/received PY - 2016/08/03/accepted PY - 2016/9/2/entrez PY - 2016/9/2/pubmed PY - 2017/8/3/medline SP - e0161356 EP - e0161356 JF - PloS one JO - PLoS One VL - 11 IS - 9 N2 - 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. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/27583444/MRI_Based_Regional_Muscle_Use_during_Hamstring_Strengthening_Exercises_in_Elite_Soccer_Players_ DB - PRIME DP - Unbound Medicine ER -