Premium
Hamstrings‐to‐quadriceps strength and size ratios of male professional soccer players with muscle imbalance
Author(s) -
Denadai Benedito Sérgio,
Oliveira Felipe Bruno Dias,
Camarda Sérgio Ricardo de Abreu,
Ribeiro Leandro,
Greco Camila Coelho
Publication year - 2016
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/cpf.12209
Subject(s) - medicine , concentric , physical therapy , physical medicine and rehabilitation , leg muscle , quadriceps muscle , anatomy , mathematics , geometry
Summary The aim of this study was to determine the correlation between the concentric hamstrings/quadriceps muscle strength (H con :Q con ) and cross‐sectional area ratios (H csa :Q csa ) in professional soccer players with H con :Q con imbalance. Nine male professional soccer players (25·3 ± 4·1 years) performed five maximal concentric contractions of the knee extensors ( KE ) and flexors ( KF ) at 60 s −1 to assess H con :Q con . The test was performed using the dominant (preferred kicking), and non‐dominant limb with a 5‐min recovery period was allowed between them. Only players with H con :Q con < 0·60 (range: 0·45–0·59) in both limbs were included in this study. The muscle cross‐sectional area ( CSA ) of KE and KF was determined by magnetic resonance imaging. The correlations between H con :Q con and H csa :Q csa in the dominant leg ( r = −0·33), non‐dominant leg ( r = 0·19) and in the both legs combined ( r = 0·28) were not statistically significant ( P >0·05). Thus, the H con :Q con seems not to be determined by H csa :Q csa in professional soccer players with H con :Q con imbalance.