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- W2056558079 abstract "BACKGROUND: In Japan, a multi sensor wristband (ViM sports memory (ViM); Microstone, Saku, Japan) that includes a uniaxial accelerometer and a gyro-sensor has been developed. However, until now, no studies have been reported concerning the validity of this device. PURPOSE: To examine the reliability and validity of the ViM for evaluation of physical activity, and to compare the ViM and an accelerometer (Lifecoder (LC); Suzuken, Nagoya, Japan) during walking and running. METHODS: Thirteen males (age: 24.4 +/− 2.6 yrs; body mass, 70.0 +/− 7.0 kg; height, 174.3 +/− 4.9 cm) and 9 females (age, 21.4 +/− 3.6 yrs; body mass, 50.2 +/− 3.7 kg; height, 158.7 +/− 5.3 cm) performed 5 min of treadmill walking at 3.6, 4.8, and 6.0 km/h and treadmill running at 7.2 and 9.6 km/h. Two ViMs were placed bilaterally on each wrist position, and two LCs were placed side by side bilaterally at the waist. During all exercise, an indirect calorimeter (IC) (MedGraphics VO2000; Medical Graphics, St. Paul, MN) measured energy expenditure (EE). The ViM and the LC recorded body motion, then predicted EE (EEViM and EELC) were calculated by outputs of both motion monitors, respectively. Data were analyzed with two-way ANOVA with repeated measures, intra-class correlation coefficient (ICC), and correlation coefficient. RESULTS: There were no significant differences in the mean EE recorded bilaterally by the ViM (P = .169) and the LC (P = .844), and reliability of both motion monitors were high ICC (ViM: ICC = 0.990, P < 0.001; LC: ICC = 0.995, P < 0.001). Correlations between EEIC and two predicted EE were significant (ViM: r = 0.821, P < 0.001; LC: r = 0.951, P < 0.001). The ViM significantly overestimated EE by the IC during all walking speed (3.6, 4.8, and 6.0 km/h), although there were no significant differences between IC and LC during walking. Both motion monitors significantly underestimated EE during running at 7.2 and 9.6 km/h. CONCLUSIONS: The ViM showed high the reliability and validity to EE measured by the IC; however, coefficients of the reliability and validity of the LC were higher than those of the ViM. The ViM overestimated the EE at walking and underestimated at running." @default.
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- W2056558079 date "2008-05-01" @default.
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- W2056558079 title "Examination of Gyro sensor and Accelerometer device to Evaluate to Physical Activity" @default.
- W2056558079 doi "https://doi.org/10.1249/01.mss.0000322351.85028.4c" @default.
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