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Assessment of the MyWellness Key accelerometer in people with type 2 diabetes.
- Source :
-
Applied Physiology, Nutrition & Metabolism . Nov2015, Vol. 40 Issue 11, p1193-1198. 6p. 3 Charts, 3 Graphs. - Publication Year :
- 2015
-
Abstract
- Accelerometers are designed to measure physical activity (PA) objectively. The MyWellness Key (MWK) accelerometer has been validated primarily in younger, normal-weight populations. The aims of this study were to examine the accuracy of the MWK against directly measured lab-based exercise and free-living PA in people with type 2 diabetes, many of whom are older and overweight or obese. Thirty-five participants with type 2 diabetes completed the protocol, which included a laboratory-based session and a free-living phase. In the laboratory visit, participants completed a structured treadmill protocol wearing MWKs on each hip (all subjects) and bra cup (women only). The speed where each MWK switched from recording light- to moderate-intensity activity was determined for each MWK worn. In the free-living phase, participants wore the MWK for all waking hours for 2 weeks, and recorded exercise in PA diaries immediately after each exercise session. The mean cut-points between low ('Free') and moderate ('Play') intensity for the right and left waist-worn MWKs were 4.1 ± 0.5 km/h and 5.0 ± 0.9 km/h for the bra-mounted MWK; ideal cut-point would be 4.0 km/h. In the free-living phase, the Spearman correlation between PA according to PA diary and the waist-worn MWK was 0.81 (95% confidence interval (CI): 0.76, 0.85; P < 0.001), but only 0.66 (95% CI: 0.53, 0.77; P < 0.001) when on the bra. In conclusion, the waist-worn MWK measured PA volume accurately, and was acceptably accurate at discriminating between low- and moderate-intensity PA in people with type 2 diabetes. The MWK underestimated PA volume and intensity when worn on a bra. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ACCELEROMETERS
*ANTHROPOMETRY
*BLOOD pressure measurement
*CONFIDENCE intervals
*PEOPLE with diabetes
*LABORATORIES
*RESEARCH methodology
*TYPE 2 diabetes
*PROBABILITY theory
*RESEARCH funding
*STATISTICS
*DATA analysis
*BODY mass index
*RESEARCH methodology evaluation
*EXERCISE intensity
*PHYSICAL activity
*DATA analysis software
*DIARY (Literary form)
*DESCRIPTIVE statistics
*ODDS ratio
Subjects
Details
- Language :
- English
- ISSN :
- 17155312
- Volume :
- 40
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Applied Physiology, Nutrition & Metabolism
- Publication Type :
- Academic Journal
- Accession number :
- 110605484
- Full Text :
- https://doi.org/10.1139/apnm-2015-0169