Effect of adaptive paced cardiolocomotor synchronization during running: a preliminary study
118424 Santa Veronica Cir., Fountain Valley , CA, USA.
Journal of Sports Science & Medicine
|October 24, 2013
Summary
Adaptive cardiolocomotor synchronization (CLS) pacing improved running performance by reducing run times and slowing heart rate increases. This novel pacing method may serve as a beneficial training aid for runners.
Area of Science:
- Exercise Physiology
- Biomechanical Engineering
Background:
- Cardiolocomotor synchronization (CLS) is established for rhythmic activities like running, typically at a 1:1 heart rate to activity frequency ratio.
- CLS can enhance locomotor efficiency, improving stroke volume, reducing blood pressure variability, and lowering oxygen uptake (VO2).
Purpose of the Study:
- To investigate if harmonic CLS at different integer ratios (e.g., 1:2, 2:3, 3:2) offers performance benefits beyond 1:1 synchronization.
- To develop and test an adaptive pacing algorithm for CLS.
Main Methods:
- An algorithm was created to determine the simplest harmonic ratio between stride rate and heart rate, implemented via audio cues on an iPhone.
- A sham-controlled crossover study involved 15 runners completing a 3-mile run under adaptive pacing and sham conditions.
Main Results:
- Adaptive pacing significantly decreased average run times by 35 seconds (p < 0.05).
- The increase in heart rate over time was significantly slower with adaptive pacing (τ = 0.99) compared to sham (τ = 1.53) (p < 0.01).
- 87% of runners easily adjusted stride length, and 79% reported performance improvement.
Conclusions:
- Adaptive paced CLS, utilizing harmonic synchronization, demonstrates a beneficial effect on running performance.
- This adaptive pacing method shows potential as an effective training aid for runners.
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