Belmont University Research Symposium (BURS)

Comparing 5Hz to 10Hz During Sprint Acceleration

Publication Date

2024

College

Sciences and Mathematics, College of

Department

Sport Science, Department of

BURS Faculty Advisor

Erin Feser

Presentation Type

Oral Presentation

Abstract

Ground contact time is a valuable performance metric in sprint running. Measuring ground contact time with high-speed video capture has long been considered a reliable industry standard. New technologies, like an internal measurement unit (IMU), present opportunities for measuring sprint running metrics but require additional data processing techniques to render the desired metrics. One of the necessary data processing steps with IMU data is selecting a filter cutoff frequency that improves the signal quality without reducing accuracy. The purpose of this study was to compare the accuracy of a 5Hz filter cutoff frequency to a 10Hz filter cutoff frequency for obtaining contact times during sprint running acceleration. To determine accuracy in the contact times derived from the IMU data, the bias (mean measurement difference between the two devices, IMU-Camera) and random error (1.96 x standard deviation of the differences between the devices) were determined for steps 1, 2, 4, 7, and 10of a 20-meter sprint. Seventeen competitive college age athletes participated in the study.

This document is currently not available here.

Share

COinS