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Updated: Feb 20, 2026

A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
Published on: January 28, 2020
Anaerobic Contribution Determined in Swimming Distances: Relation with Performance
Eduardo Z Campos1,2, Carlos A Kalva-Filho3, Ronaldo B Gobbi4
1Nucleus of Investigation in Sport Performance, Department of Physical Education, Federal University of Pernambuco, Recife, Brazil.
Total anaerobic contribution (TAn) in swimming is highest for 200 and 400m races. This anaerobic energy is crucial for performances under 400m and can inform training strategies.
Area of Science:
- Sports Science
- Exercise Physiology
- Swimming Performance Analysis
Background:
- Total anaerobic contribution (TAn) can be assessed without mechanical interference.
- Limited understanding exists regarding TAn differences across various swimming distances.
Purpose of the Study:
- To determine and compare TAn in different maximal swimming performances.
- To relate TAn to swimming performance metrics.
Main Methods:
- Fourteen competitive swimmers completed maximal front crawl swims (50m, 100m, 200m, 400m, 800m).
- TAn was calculated using the sum of phosphagen (AnAl) and glycolytic (AnLa) contributions, derived from EPOCFAST and accumulated blood lactate.
- Backward extrapolation technique was employed.
Main Results:
- AnLa was significantly lower in 800m swims.
- AnAl was lowest in 50m, followed by 100m and 800m, with highest values in 200m and 400m.
- TAn was significantly higher in 200m and 400m compared to 50m and 800m.
- Anaerobic contributions correlated with performances up to 400m, but not 800m.
Conclusions:
- The 200m and 400m swimming distances exhibit the highest total anaerobic contribution.
- TAn is a significant factor for swimming performances under 400m.
- TAn assessment can be integrated into swimming training programs.
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