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Mechanical efficiency in rowing.

T Fukunaga, A Matsuo, K Yamamoto

    European Journal of Applied Physiology and Occupational Physiology
    |January 1, 1986
    PubMed
    Summary
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    Rowing mechanical efficiency was studied in five oarsmen using incremental loading. Efficiency plateaued around 17.5% at higher power outputs, with net efficiency at 19.8%.

    Area of Science:

    • Sports Science
    • Biomechanics
    • Exercise Physiology

    Background:

    • Understanding rowing mechanical efficiency is crucial for optimizing athletic performance.
    • Previous research has explored various factors influencing efficiency, but specific data on incremental loading in a controlled environment is limited.

    Purpose of the Study:

    • To determine the mechanical efficiency of university oarsmen during rowing in a simulated environment.
    • To analyze the relationship between power output, force, stroke frequency, and efficiency.

    Main Methods:

    • Five university oarsmen underwent stepwise incremental loading rowing in a water-circulated tank.
    • Power output (WO), force (FC), and stroke frequency were measured.
    • Oxygen uptake and heart rate were monitored to determine anaerobic threshold (AT) using Wasserman's method.

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    Main Results:

    • Anaerobic threshold (AT) was 74.6% of VO2max.
    • Gross efficiency (GE) increased with force at lower intensities.
    • GE plateaued at approximately 17.5% between 124-182 W of power output.
    • Net efficiency was 19.8%, work efficiency was 27.5%, and delta efficiency was 22.8%.

    Conclusions:

    • Rowing mechanical efficiency demonstrates a plateau at higher power outputs.
    • Different methods of calculating efficiency yield varying results, highlighting the importance of clear baseline definitions.
    • The findings provide valuable insights for training and performance enhancement in rowing.