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Updated: Jul 8, 2026
08:12
Experimental Methods to Study Human Postural Control
Published on: September 11, 2019
Balance control after slip-like perturbations in human running when systematically altering forward trunk leaning
Luca Braun1,2,3, Brian R Umberger3, Carlo von Diecken1,2
1Institute for Advanced Biomechanics and Motion Studies, Offenburg University of Applied Sciences, Offenburg, Germany.
The Journal of Experimental Biology
|July 7, 2026
Summary
Human running balance recovers from slip-like perturbations by regulating whole-body angular momentum. Forward leaning did not affect recovery time but improved baseline control, suggesting reliance on feedforward mechanisms.
Area of Science:
- Biomechanics
- Human locomotion
- Motor control
Background:
- Human running is robust to perturbations, but recovery mechanics are poorly understood.
- Previous research focused on walking, underrepresenting running's distinct characteristics.
- Understanding running perturbation recovery is crucial for injury prevention and performance.
Purpose of the Study:
- Investigate whole-body mechanics of running recovery from slip-like perturbations.
- Examine the influence of trunk forward leaning on balance control during running.
- Quantify the role of sagittal whole-body angular momentum (WBAM) regulation.
Main Methods:
- Sixteen participants ran at 2.5 m/s with induced anterior-posterior slip-like perturbations.
- Calculated sagittal whole-body angular momentum (WBAM) and external angular impulse.
- Assessed balance control via WBAM-based perturbation recovery time and trunk kinematics.
Main Results:
- Recovery primarily involved reactive sagittal WBAM regulation via backward angular impulse.
- Sustained propulsive ground forces and initial vertical force peaks aided recovery.
- Forward leaning did not alter recovery time but reduced WBAM fluctuations, suggesting enhanced feedforward control.
Conclusions:
- Running balance recovery relies on regulating sagittal WBAM through reactive and feedforward mechanisms.
- Forward leaning may enhance balance control by promoting feedforward strategies.
- Findings provide insights into robust human running stability.
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