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Seungjin Kang,Sooyoung Yoo,Hyunyoung Baek,Junheon Lee,Younggeun Choi,Hyangjung Kim,Hyoseok Yi,Eun Joo Yang 대한의용생체공학회 2019 Biomedical Engineering Letters (BMEL) Vol.9 No.2
The aim of this study was to examine the feasibility of the Smart dynamometer as a rehabilitation exercise device in a dailycare by comparing with the existing medical devices. We used and analyzed clinical and measurement data of breast cancersurvivors who have used Smart dynamometer during their rehabilitation after breast cancer surgery. The Smart dynamometerwas compared with the two existing devices of Takei dynamometer and surface electromyography (sEMG) that were usedin routine care, respectively. Three key components of the rehabilitation exercise devices were analyzed to validate the feasibilityof the Smart dynamometer: grip strength, reaction time, and grip endurance time. Pearson’s correlation analysis wasperformed to compare the statistical signifi cance between the devices. The data of 12 and 15 female breast cancer patientswere analyzed for comparing the Smart dynamometer with Takei dynamometer and sEMG, respectively. There was a veryweak correlation between the maximum values from the Takei and the Smart dynamometers in the aff ected and non-aff ectedarms of breast cancer patients (r = 0.5321, 0.4733). Comparisons of 3 features between the Smart dynamometer and sEMGshowed that there were strong positive correlations for both reaction time and endurance time in the aff ected and non-aff ectedarms (r > 0.9). The feasibility of the Smart dynamometer for the possible use in a daily rehabilitation exercise was partiallyverifi ed. Moreover, since the Smart dynamometer was highly correlated with time-related variables, it was important andsignifi cant to measure both grip strength and time-related information.