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2016

Journal of Sports Sciences

Validation of Moticon’s OpenGo sensor insoles during gait, jumps, balance and cross-country skiing specific imitation movements

Thomas Stöggl, Alex Martiner

Department of Sport Science and Kinesiology, University of Salzburg

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Accelerometer, AMTI, force, force plate, PedarX, pressure distribution

Zusammenfassung

The purpose of this study was the experimental validation of the OpenGo sensor insole system compared to PedarX sensor insole and AMTI force-plate systems. Sixteen healthy participants performed trials in walking, running, jumping (drop and counter movement jumps), imitation drills and balance, with simultaneous measures of all three systems. Detected ground contact and flight times with OpenGo during walking, running and jumping were similar to those of AMTI. Force–time curves revealed comparable shapes between all three systems. Force impulses were 13–34% lower with OpenGo when compared to AMTI. Despite differences in mean values in some exercise modes, correlations towards AMTI were between r = 0.8 and r = 1.0 in most situations. During fast motions, with high force and impact, OpenGo provided lower force and latency in force kinetics. During balance tasks, discrepancy in the centre of pressure was found medio-lateral, while anterio–posterior direction was closer to AMTI. With awareness of these limitations, OpenGo can be applied in both clinical and research settings to evaluate temporal, force and balance parameters during different types of motion. The fully mobile OpenGo system allows for the easy and quick system application, analysis and feedback under complex field conditions, as well.

Moticon's Schlussfolgerungen

This study validates Moticon’s OpenGo sensor insole system by comparing it to the AMTI force plate and PedarX systems, focusing on walking, running, jumping, balance tasks, and cross-country skiing motions. Foot kinetics are crucial in various fields, and wearable sensors offer flexibility over stationary systems. Sixteen participants performed different movements, with forces recorded simultaneously using all three systems. Results showed that OpenGo accurately detected temporal parameters like ground contact and flight times, especially during gait and jumps. However, OpenGo measured lower force impulses and peak forces compared to AMTI and PedarX, with discrepancies increasing during fast or high-impact activities. Despite these differences, OpenGo provided reproducible results suitable for relative comparisons. During balance tasks, OpenGo showed more deviation in forces but reasonable accuracy in anterio-posterior COP data. Overall, while PedarX offers higher accuracy in absolute force values, OpenGo's wireless design and temporal accuracy make it useful in both clinical and field settings.

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2016

Journal of Sports Sciences

Validation of Moticon’s OpenGo sensor insoles during gait, jumps, balance and cross-country skiing specific imitation movements

Thomas Stöggl, Alex Martiner

Department of Sport Science and Kinesiology, University of Salzburg

Schlagwörter

Accelerometer, AMTI, force, force plate, PedarX, pressure distribution

Accelerometer, AMTI, force, force plate, PedarX, pressure distribution

Zusammenfassung

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