Contemporary Approaches to Isokinetic Strength Assessments in Professional Football Players.

Steven Eustace, Richard Page, Matt Greig

Research output: Contribution to journalArticle

6 Citations (Scopus)
40 Downloads (Pure)

Abstract

To assess traditional and novel isokinetic strength characteristics of the knee flexor (eccKF) and extensor (conKE) musculature, 26 professional football players completed bilateral conKE and eccKF contractions at angular velocities of 180, 270, and 60°·s-1. Values of peak torque (PT), angle of peak torque (APT), angle-specific torque (AST) analysed every 10° between 40 and 70°), functional range (FR), and dynamic control ratios (DCR) calculated from both the PT (DCRPT) and AST data (DCRAST) were analysed. The PT, APT, and FR data elicited a significant contraction*angular velocity interactions (P< 0.001). Significant main effects for contraction*angular velocity*angle and contraction*angular velocity*limb*angle interactions (P< 0.001) were identified for AST data. The DCRPT data elicited a significant main effect for angular velocity (P< 0.001) and limb (P= 0.018), whereas the DCRAST data was significantly different across angles (P< 0.001) and elicited a significant (P= 0.002) limb*angle interaction. Traditional methods and metrics utilised for isokinetic strength assessments in football may not be appropriate and/or sensitive enough to identify injury risk and, as such, practitioners should utilise the novel metrics proposed in the current study and conduct assessments across a range of joint angles and angular velocities.
Original languageEnglish
Pages (from-to)251-257
JournalScience and Medicine in Football
Volume1
Issue number3
Early online date29 Aug 2017
DOIs
Publication statusE-pub ahead of print - 29 Aug 2017

Fingerprint

Football
Torque
Extremities
Knee
Joints
Wounds and Injuries

Keywords

  • Screening
  • Peak torque
  • Injury risk
  • Angle of Peak torque
  • Dynamic control ratio

Cite this

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title = "Contemporary Approaches to Isokinetic Strength Assessments in Professional Football Players.",
abstract = "To assess traditional and novel isokinetic strength characteristics of the knee flexor (eccKF) and extensor (conKE) musculature, 26 professional football players completed bilateral conKE and eccKF contractions at angular velocities of 180, 270, and 60°·s-1. Values of peak torque (PT), angle of peak torque (APT), angle-specific torque (AST) analysed every 10° between 40 and 70°), functional range (FR), and dynamic control ratios (DCR) calculated from both the PT (DCRPT) and AST data (DCRAST) were analysed. The PT, APT, and FR data elicited a significant contraction*angular velocity interactions (P< 0.001). Significant main effects for contraction*angular velocity*angle and contraction*angular velocity*limb*angle interactions (P< 0.001) were identified for AST data. The DCRPT data elicited a significant main effect for angular velocity (P< 0.001) and limb (P= 0.018), whereas the DCRAST data was significantly different across angles (P< 0.001) and elicited a significant (P= 0.002) limb*angle interaction. Traditional methods and metrics utilised for isokinetic strength assessments in football may not be appropriate and/or sensitive enough to identify injury risk and, as such, practitioners should utilise the novel metrics proposed in the current study and conduct assessments across a range of joint angles and angular velocities.",
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Contemporary Approaches to Isokinetic Strength Assessments in Professional Football Players. / Eustace, Steven; Page, Richard; Greig, Matt.

In: Science and Medicine in Football, Vol. 1, No. 3, 29.08.2017, p. 251-257.

Research output: Contribution to journalArticle

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AB - To assess traditional and novel isokinetic strength characteristics of the knee flexor (eccKF) and extensor (conKE) musculature, 26 professional football players completed bilateral conKE and eccKF contractions at angular velocities of 180, 270, and 60°·s-1. Values of peak torque (PT), angle of peak torque (APT), angle-specific torque (AST) analysed every 10° between 40 and 70°), functional range (FR), and dynamic control ratios (DCR) calculated from both the PT (DCRPT) and AST data (DCRAST) were analysed. The PT, APT, and FR data elicited a significant contraction*angular velocity interactions (P< 0.001). Significant main effects for contraction*angular velocity*angle and contraction*angular velocity*limb*angle interactions (P< 0.001) were identified for AST data. The DCRPT data elicited a significant main effect for angular velocity (P< 0.001) and limb (P= 0.018), whereas the DCRAST data was significantly different across angles (P< 0.001) and elicited a significant (P= 0.002) limb*angle interaction. Traditional methods and metrics utilised for isokinetic strength assessments in football may not be appropriate and/or sensitive enough to identify injury risk and, as such, practitioners should utilise the novel metrics proposed in the current study and conduct assessments across a range of joint angles and angular velocities.

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