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Assessment of rowing efficiency

K Affeld¹, K Schichl, A Ziemann

¹Universitätsklinikum Rudolf Virchow, Freie Universität Berlin, Germany.

International Journal of Sports Medicine

|September 1, 1993

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A new method quantifies hydrodynamic rowing efficiency, revealing 25-33% energy loss to water flow. This breakthrough allows real-time assessment of rowing efficiency during the stroke.

Area of Science:

Sports Science
Hydrodynamics
Biomechanics

Background:

Significant energy loss (25-33%) occurs in rowing due to water flow around the blade, reducing overall efficiency.
Previous methods for assessing hydrodynamic rowing efficiency were complex and could not provide instantaneous measurements as a function of rowing angle and time.

Purpose of the Study:

To develop a practical method for assessing hydrodynamic rowing efficiency at any instant during the rowing stroke.
To enable the analysis of efficiency variations with rowing angle and time.

Main Methods:

Recording the blade's path and the forces acting upon it during rowing.
Measuring boat velocity, oar angular velocity, and rower-exerted moment.
Digitizing and storing these parameters onboard for subsequent shore-based computation.

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Main Results:

A practical method for assessing instantaneous hydrodynamic rowing efficiency has been established.
The method allows for the continuous evaluation of energy loss to water flow throughout the rowing action.

Conclusions:

The developed method overcomes previous limitations in assessing hydrodynamic rowing efficiency.
This provides a valuable tool for optimizing rowing technique and improving performance by understanding real-time energy dynamics.