Validation of a 10Hz GPS for assessing kayak race analysis kinematic variables

• Main Author: Chua, Yi Ying
• Other Authors: -
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2021
• Subjects: Science::General
• Online Access: https://hdl.handle.net/10356/153114
• Institution: Nanyang Technological University

This project aimed to investigate the method in quantifying sprint kayaking performance using a Global Positioning System (GPS) device. A GPS device provides users with positional information, velocity and units of acceleration. In kayak racing and other sports, GPS devices have been used for monitoring training loads and performing race analyses. However, the data collected by the GPS varies according to the time of the day, satellites available to the GPS receiver and device’s sampling rates. Therefore, the study aimed to validate the VX Sport model 340 10Hz GPS in assessing race analysis kinematic variables, such as race segment velocity and stroke rates.12 participants, aged between 15 and 18 were recruited from the national sprint kayak training squad. They performed 3 sets of 200m trials at submaximal effort, during which average race segment (every 50m) velocity and SR were recorded by the VX Sport model 340 GPS device and 2-dimensional video cameras simultaneously. Using 2D video analysis as the gold standard in validating the GPS, Pearson’s correlation coefficient (r), linear regression and root mean square of differences were used to compare against data obtained from the GPS device. Although there was a significant positive correlation (p<.001) between average race segment velocity and stroke rate measured by GPS and video, application in the sport of kayak racing would suggest validity for SR recordings and further investigations would be needed to determine the validity for velocity measures.