Within the framework of its new project entitled “Instrumented estimation of time of flight and jump height in volleyball”, the Laboratory of Movement Analysis and Measurement (LMAM) is conducting measurements on the Lausanne University Volley Ball team.
Jumps are major indicators of the players’ performance in volleyball. To analyze jumps, flight time and jump height are the two main features that must be evaluated.
Traditionally, these two features have been being assessed by observers or video recordings. Inertial Measurement Units (IMUs) have been used to estimate jump parameters objectively and more accurately. For this project,one Physilog was attached to the lower back (sacrum) of the players.
Thus, this project aims toward devising an algorithm to calculate the time of flight, jump height and other related parameters such as posture before and after the jump from the volleyball jumps data recorded by IMUs (accelerometers and gyroscopes).
This project has 3 main objectives:
– Devise an algorithm to automatically detect two major types of jump: attacks and blocks,
– Differentiate between the two types of jumps
– Validate the algorithm against video camera observation.
We’re looking forward to hearing more on this very interesting project!