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A Quantitative Fitness Analysis Workflow
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Robust Exponential Decreasing Index (REDI): adaptive and robust method for computing cumulated workload.

Issa Moussa1,2, Arthur Leroy1, Guillaume Sauliere1

  • 1IRMES, Institut National du Sport de l'Expertise et de la Performance, Paris, France.

BMJ Open Sport & Exercise Medicine
|December 5, 2019
PubMed
Summary
This summary is machine-generated.

The new Robust Exponential Decreasing Index (REDI) offers a reliable method for analyzing cumulative workload, even with missing data. This index provides precise control over how workload influence decreases over time, making it adaptable for various sports.

Keywords:
cumulated workloadindexmissing datamonitoringtraining load

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Performance Analysis

Background:

  • Cumulative workload monitoring is crucial in sports for performance and injury prevention.
  • Existing indices like the acute:chronic workload ratio and EWMA have limitations, particularly with missing data.
  • The complexity of scheduling (weekends, travel, injuries) often leads to incomplete workload data.

Purpose of the Study:

  • To introduce and define the Robust Exponential Decreasing Index (REDI).
  • To demonstrate REDI's capability for improved cumulative workload analysis with precise control over time-decaying load influence.
  • To highlight REDI's robustness in handling frequently missing data in sports contexts.

Main Methods:

  • Simulated 200 cumulative workloads using Gaussian and uniform distributions.
  • Compared REDI's performance against traditional methods (acute:chronic workload ratio, EWMA).
  • Analyzed theoretical properties, focusing on the decreasing parameter's influence.

Main Results:

  • REDI consistently monitors load despite significant missing data.
  • The decreasing parameter allows customization of daily workload weighting.
  • REDI demonstrates robustness and flexibility in workload analysis.

Conclusions:

  • REDI addresses practical and theoretical drawbacks of existing workload indices, especially concerning missing data.
  • The adaptable decreasing parameter allows tailoring to specific sports.
  • REDI presents a credible, robust, and adaptable alternative for calculating time-weighted cumulative workload.