Graduation Term

2023

Degree Name

Master of Science (MS)

Department

School of Kinesiology and Recreation

Committee Chair

Michael Torry

Abstract

This study compared Inertial Measurement Unit (IMU) and Optical Motion Capture (OMC) systems in measuring peak ankle angles and Range of Motion (ROM) during Countermovement Jumps (CMJ) and Lateral Skater Jumps (LSJ). Ankle angles in pitch, roll, and yaw were determined by integrating gyroscope data, aligning with foot flat reference, and fusing with accelerometer-derived inclination angles using a complementary filter. We hypothesized that IMU-based methods would parallel OMC in capturing peak angles and ROM during CMJ and LSJ landings, with accuracy and reliability assessed via Root Mean Square (RMSE) and Intraclass Correlation (ICC) statistics. For CMJ, high accuracy and reliability were observed in the Peak Positive Frontal angle with RMSE of 6.72° and ICC of 0.517. However, LSJ displayed lower performance, with no metric reaching an ICC > 0.5 or an RMSE < 10°. The study suggests limitations of IMU in accurately capturing ankle joint kinematics in dynamic jumps using these methods.

Access Type

Thesis-Open Access

DOI

https://doi.org/10.30707/ETD2023.20240124055107909572.999987

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