Case study on the usefulness of an instrumented constant brake for the evaluation of the propulsive force of the fins in lifesavers.

Abstract

Background: Assessing physical performance is essential to improve planning and training processes. This assessment is essential in lifesaving, both in its sporting and professional aspects.
 Objectives: The objective of this study is to explore the suitability of a propulsive force measurement test battery and the usefulness of an experimental power test in lifesaving that yields data on force, power and technique.
 Method: A world-class athlete has participated in this project. The same battery of tests has been carried out at three times of the season. The tests correspond to the maximum propulsive force test, the average propulsive force test and the experimental power test.
 Results: The maximum propulsive force (299.75 N - 332.13 N) has improved throughout the season, as well as the mean propulsive force (94.26 N - 94.96 N) and power (25.21 - 37 .59w). Also other parameters such as kick amplitude (164.66 N ± 29.31 - 228.10 N ± 20.07) have increased, while frequency (1.6 Hz - 1.2 Hz) has decreased throughout the season.
 Conclusions: The tests carried out provide relevant information and they are correlated with each other. The maximum propulsive force test and the experimental power test could provide the most relevant information to prescribe subsequent training.