Related Experiment Video
Updated: Jul 31, 2025
07:30
Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations
Published on: May 1, 2018
15.4K
Reliability and validity of 2D-video analysis to objectively assess hamstring performance during the H-test
Caroline Prince1,2,3, Sébastien Latella1, Benoit Gachon1
1Univ Savoie Mont Blanc, Interuniversity Laboratory of Human Movement Sciences, Chambéry, France.
Sports Biomechanics
|May 8, 2023
Summary
Two-dimensional video analysis reliably measures range of motion during the H-test, aiding return-to-sport decisions after hamstring injuries. This method is valid compared to gold standards and can be used in clinics.
Area of Science:
- Sports Medicine
- Biomechanics
- Rehabilitation Science
Background:
- The H-test is crucial for return-to-sport decisions post-hamstring injury.
- Objective assessment of H-test parameters is needed for reliable clinical application.
Purpose of the Study:
- Evaluate the reliability of 2D video analysis for the H-test.
- Assess the validity of 2D video analysis against an electronic gyroscope (gold standard).
- Establish normative values for H-test parameters.
Main Methods:
- Cross-sectional study with 30 healthy individuals.
- Captured hip flexion mean velocity (VMean), maximal velocity (Vmax), and range of motion (ROM) using 2D video.
- Assessed inter-rater and test-retest reliability (ICC) and validity (correlation coefficient, TEE) against an electronic gyroscope.
Main Results:
- Excellent reliability for ROM (ICC: 0.91) and moderate for VMean (ICC: 0.57) and VMax (ICC: 0.64).
- Strong correlations between 2D video and gyroscope for VMean (r=0.79) and VMax (r=0.84); very strong for ROM (r=0.89).
- Males showed higher VMax, females higher ROM (p<0.001).
Conclusions:
- 2D video analysis is a reliable and valid method for assessing ROM during the H-test.
- This technique is suitable for clinical implementation.
- Normative data and sex-based differences were identified.
