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Differences in Lower Extremity Kinematics Between High School Cross-Country and Young Adult Recreational Runners
Mark F Reinking1, Nina M Carson1, Bridget M End1
1Regis University.
International Journal of Sports Physical Therapy
|February 19, 2021
Summary
Young adults exhibit greater vertical center of mass excursion during running compared to high school runners. Two-dimensional analysis of running kinematics is a viable clinical tool.
Area of Science:
- Biomechanics
- Sports Medicine
- Running Analysis
Background:
- Previous research on age-related running differences often excludes high school athletes.
- Limited studies have utilized 2-dimensional video analysis for running kinematics.
Purpose of the Study:
- Compare sagittal plane running kinematics between high school and young adult runners.
- Utilize 2-dimensional motion analysis for this comparison.
Main Methods:
- Twenty-five high school and 25 young adult runners participated.
- 2D video analysis at 240 frames per second was employed.
- Kinematic data were collected during treadmill running.
Main Results:
- Young adults showed significantly greater vertical center of mass excursion (p = .0001).
- No significant differences were found between left and right extremities.
- Other sagittal plane kinematic variables showed no significant age-group differences.
Conclusions:
- Young adults exhibit distinct running kinematics (increased vertical center of mass excursion) compared to high school runners.
- 2D motion analysis provides reliable sagittal plane running kinematics data, comparable to 3D methods.
- 2D analysis is suitable for clinical assessment of running biomechanics.
