Related Experiment Video
Updated: Dec 16, 2025
08:16
Movement Retraining using Real-time Feedback of Performance
Published on: January 17, 2013
13.7K
A real-time feedback method to reduce loading rate during running: Effect of combining direct and indirect feedback
Alessandro Garofolini1, Luca Oppici2,3, Simon Taylor1
1Institute for Health and Sport (IHES), Victoria University , Melbourne, Australia.
Journal of Sports Sciences
|July 7, 2020
Summary
Structured feedback effectively trains runners to reduce impact loading. Direct feedback on loading rate expanded movement solutions, enhancing running performance and injury prevention.
Area of Science:
- Biomechanics
- Sports Medicine
- Motor Control
Background:
- Running-related injuries are often caused by impact loading.
- Real-time feedback is a potential strategy to mitigate impact loading.
- Effective training methods for habitual low loading rates in runners are not well-established.
Purpose of the Study:
- To investigate the effectiveness of structured biofeedback in reducing impact loading during running.
- To compare the effects of direct versus indirect biofeedback on running mechanics.
- To determine if feedback can expand the range of adaptable movement solutions for runners.
Main Methods:
- Twenty healthy non-runners participated in a structured biofeedback training program.
- Indirect biofeedback included cadence and foot-strike angle adjustments.
- Direct biofeedback focused on reducing the impact loading rate.
Main Results:
- Indirect biofeedback on foot-strike angle reduced impact load.
- Direct feedback on loading rate significantly increased the range of adaptable solutions (+58%, p=0.007).
- Structured feedback enhanced the exploration of neuro-mechanical strategies for reduced loading.
Conclusions:
- Structured biofeedback, particularly direct feedback on loading rate, is effective in expanding adaptive movement strategies for runners.
- This approach may improve running performance and resilience to injury under varied conditions.
- Findings suggest potential for optimizing running form through targeted feedback interventions.
Related Concept Videos
01:26Feedback control systems
602
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
602
01:24Effects of feedback
870
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
870
01:17Open and closed-loop control systems
1.4K
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
1.4K
01:01Feedback Loops
63.0K
In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.
63.0K
01:07Time-Domain Interpretation of PD Control
296
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
296
01:26PD Controller: Design
521
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
521