Biomechanical analysis in freestyle snowboarding: application of a full-body inertial measurement system and a bilateral insole measurement system

Abstract

Several investigations show that 5-28% of all snowboarding injuries relate to the ankle joint complex. To reduce the risk of ankle injuries, the development of enhanced snowboard equipment is considered. Therefore, it is essential to understand the biomechanics in snowboarding. Scientific studies investigating the ankle joint complex in freestyle snowboarding, including inrun, flight phase, and landing, are so far not available. An auspicious method to determine relevant kinematical and kinetic parameters is based on the utilization of an inertial measurement suit in combination with a bilateral insole measurement system. This pilot study aims at the application of these two systems in freestyle snowboarding for data collection in a real snowboarding environment. The accuracy of the used measurement systems is assessed. The insole measurement system shows a root mean square error of 28% (76.6%) in reference to a force plate. A maximum mean deviation of 4.81 (70.31) is found in the inertial measurement system compared to an optical video-based system. The on-snow data collection reveals valuable information and provides a better understanding of the biomechanics in freestyle snowboarding. Ranges of movement of the ankle joint complex and forces essential to perform snowboarding maneuvers are measured. In addition, combinations of joint angles and landing forces occurring during the landing phase of an aerial maneuver are found that have the potential to cause injuries. Critical values of 251 dorsiflexion and 81 external rotation in combination with a normal force of 3020 N are measured at the back leg.

Validity of an Inertial Measurement Unit System to Assess Lower-limb Kinematics during a Maximal Linear Deceleration

“…Wouda et al (2018) also reported strong agreement (r > 0.98) between Xsens and 3DOMA at the hip and knee during treadmill running at different speeds, however when compared with our study, larger errors were observed (mean difference <18.1° at the hip and <10.2° at knee). Krüger and Edelmann-Nusser (2009) also reported strong agreement (r = 0.77-0.96) and errors of less than 5° for knee angles during a snowboarding turn, when compared with video analysis. When compared with the present study, smaller measurement error has been shown at the knee (peak flexion: 0.8°, peak extension: 1.4° and mean angular velocity: 14°.s −1 ) and hip (hip extension: 0.5°) during a kicking action (Blair et al, 2018).…”

Researches Concerning the using of Moven© Inertial Navigation System in Monitoring the Male Triple Jump Event

“…Internationally, the implementation of this technology in science and sport science, has a wide application in some studies and researches, based on the use of complete systems such as Moven © , Animazoo © or the use of components of inertial navigation systems (Willemsen et al, 1990;Davey et al, 2005;Welk, 2005;Kavanagh et al, 2006;Bamberg et al, 2008;Tilmann et al, 2008;Hesami et al, 2008;Kruger and Edelmann-Nusser, 2009;Meamarbashi, 2009;Mbaitiga, 2009).…”