Related Experiment Video
Updated: Jan 5, 2026

06:52
An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
Published on: May 26, 2020
8.4K
Clinical Features and isokinetic Parameters in Assessing Injury Risk in elite Football Players
Rogério F Liporaci1, Marcelo Saad1, Debora Bevilaqua Grossi1
1Department of Biomechanics, Medicine and Rehabilitation of the Locomotor Apparatus, Universidade de Sao Paulo Faculdade de Medicina de Ribeirao Preto, Ribeirão Preto, Brazil.
International Journal of Sports Medicine
|October 16, 2019
Summary
Football players
Area of Science:
- Sports Medicine
- Biomechanics
- Injury Prevention
Background:
- Non-contact injuries are common in football.
- Identifying risk factors for these injuries is challenging.
- The role of individual training abilities in injury risk is unclear.
Purpose of the Study:
- To identify risk factors for lower-limb musculoskeletal injuries in football players.
- To assess the relationship between functional performance, anthropometrics, and injury history.
- To determine if isokinetic knee test results predict injury risk.
Main Methods:
- Calculating injury incidence and odds ratios for suspected risk factors.
- Analyzing hamstring/quadriceps conventional ratio.
- Evaluating peak torque differences in isokinetic knee tests.
Main Results:
- A hamstring/quadriceps ratio outside 55-64% may increase non-contact muscle injury risk.
- Extensor peak torque exceeding 10% elevates lower-extremity injury risk 16-fold.
- Flexor peak torque difference >10% increases lower-extremity injury risk 12-fold.
Conclusions:
- Isokinetic knee testing and anthropometric data can identify football injury risk factors.
- Individualized exercise programs based on these assessments can reduce injury risk.
- Targeted interventions can help protect athletes throughout the season.

