| Summary: | 碩士 === 國立臺灣師範大學 === 體育學系 === 105 === Introduction: Wearable sensor could measure exercise intensity to provide instant feedback. However, very few sensors could accurately measure values both in land and aquatic environment. Purpose：The aim of this study was to assess validity and reliability of wearable sensor usage in land and aquatic environment. Methods：10 healthy subjects and 10 college swimmer were recruited for this study. In land environment, the subjects required to walk and run on treadmill with different speeds (3km/h、10km/h). Ten Vicon cameras (200 Hz) were used to capture marker trajectory to calculate gait cadence and joint range of motion. One Delsys sensor was used to capture foot impacts when walking at different speeds (120steps/min、90steps/min) and different stride distance (100cm/stride、140cm/stride). In aquatic environment, the subjects required to swim 50m with freestyle. The stroke distance and stroke rate were captured by camera. Pearson correlation coefficient was used to for statistical analysis. ICC represented the reliability of measured variables. Results: In land environment, walking and running parameters were highly correlated (r=0.89-0.99). The range of motion during running was moderately correlated In aquatic environment, swim time、stroke and stroke distance were highly correlated (r=0.86-0.88). The stroke rate was moderately correlated. In land environment, all parameters were highly correlated (ICC=0.98-0.99). In aquatic environment, swim time and stroke were moderately correlated.
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