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Related Experiment Video

Updated: Jun 24, 2026

Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations

Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations

Published on: May 1, 2018

Soccer-specific fatigue and eccentric hamstrings muscle strength.

Matt Greig¹, Jason C Siegler

¹The Football Association, Shropshire, United Kingdom. matt.greig@edgehill.ac.uk

Journal of Athletic Training

|March 20, 2009

Summary

Soccer-specific fatigue significantly reduces eccentric knee flexor strength, particularly late in the game and after halftime. This suggests an increased risk of hamstring muscle strains during these periods.

Keywords:

athletic injuries isokinetic activity

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An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field

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Published on: May 26, 2020

Area of Science:

Sports Medicine
Biomechanics
Exercise Physiology

Background:

Soccer players exhibit higher hamstring strain incidence late in matches, often linked to fatigue.
Understanding the physiological impact of fatigue on muscle strength is crucial for injury prevention.

Purpose of the Study:

To determine how soccer-specific fatigue affects the peak eccentric torque of knee flexor muscles.
Investigate the relationship between fatigue and hamstring strength during simulated match play.

Main Methods:

A descriptive laboratory study involving ten male professional soccer players.
Players underwent an intermittent treadmill protocol simulating soccer match play with a halftime break.
Peak eccentric knee flexor torque was measured using isokinetic dynamometry at various speeds.

Main Results:

Eccentric knee flexor torque significantly decreased by the end of the simulated game and after halftime.
Torque reductions were observed compared to pre-exercise and early-stage measurements.
The data indicate a decline in hamstring strength due to soccer-specific exertion.

Conclusions:

Soccer-specific fatigue leads to a reduction in eccentric hamstring strength over time and after breaks.
This strength deficit increases the risk of hamstring muscle strains, especially during explosive actions.
Integrating eccentric knee flexor exercises post-conditioning may help mitigate hamstring strain injuries.