Hamstring-to-Quadriceps Torque Ratios of Professional Male Soccer Players: A Systematic Review

Baroni, BM, Ruas, CV, Ribeiro-Alvares, JB, and Pinto, RS. Hamstring-to-quadriceps torque ratios of professional male soccer players: A systematic review. J Strength Cond Res 34(1): 281–293, 2020—The goal of this review was to determine the isokinetic hamstring-to-quadriceps (H/Q) torque ratios of professional male soccer players. Systematic searches were independently carried out by 2 researchers in 7 electronic databases. Only studies with teams from the first or second national leagues were included. From these studies, we extracted the players' H/Q conventional (concentric/concentric) and/or functional (eccentric/concentric) ratios. The initial search resulted in 2,128 articles that were filtered to 30 articles (1,727 players) meeting the inclusion criteria. The H/Q conventional ratio was assessed in 27 studies (1,274 players), whereas the H/Q functional ratio was assessed in 15 studies (1,082 players). The H/Q conventional ratio mean scores of professional male soccer players were close to 60% when tested at low to intermediate angular velocities (12°·s−1 = 52 ± 7%; 30°·s−1 = 52 ± 8%; 60°·s−1 = 65 ± 12%; 90°·s−1 = 57 ± 6%; 120°·s−1 = 65 ± 16%; 180°·s−1 = 67 ± 17%) and around 70–80% at fast angular velocities (240°·s−1 = 80 ± 40%; 300°·s−1 = 70 ± 15%; 360°·s−1 = 80 ± 13%). The H/Q functional ratio mean scores of professional male soccer players were close to 80% at 60°·s−1 (79 ± 19%), around 100–130% at intermediate...
Source: Journal of Strength and Conditioning Research - Category: Sports Medicine Tags: Brief Review Source Type: research