TY - JOUR

T1 - Evaluation of Commercial Self-Monitoring Devices for Clinical Purposes

T2 - Results from the Future Patient Trial, Phase I

AU - Leth, Soren

AU - Hansen, John

AU - Nielsen, Olav W

AU - Dinesen, Birthe

PY - 2017

Y1 - 2017

N2 - Commercial self-monitoring devices are becoming increasingly popular, and over the last decade, the use of self-monitoring technology has spread widely in both consumer and medical markets. The purpose of this study was to evaluate five commercially available self-monitoring devices for further testing in clinical applications. Four activity trackers and one sleep tracker were evaluated based on step count validity and heart rate validity.METHODS: The study enrolled 22 healthy volunteers in a walking test. Volunteers walked a 100 m track at 2 km/h and 3.5 km/h. Steps were measured by four activity trackers and compared to gyroscope readings. Two trackers were also tested on nine subjects by comparing pulse readings to Holter monitoring.RESULTS: The lowest average systematic error in the walking tests was -0.2%, recorded on the Garmin Vivofit 2 at 3.5 km/h; the highest error was the Fitbit Charge HR at 2 km/h with an error margin of 26.8%. Comparisons of pulse measurements from the Fitbit Charge HR revealed a margin error of -3.42% ± 7.99% compared to the electrocardiogram. The Beddit sleep tracker measured a systematic error of -3.27% ± 4.60%.CONCLUSION: The measured results revealed the current functionality and limitations of the five self-tracking devices, and point towards a need for future research in this area.

AB - Commercial self-monitoring devices are becoming increasingly popular, and over the last decade, the use of self-monitoring technology has spread widely in both consumer and medical markets. The purpose of this study was to evaluate five commercially available self-monitoring devices for further testing in clinical applications. Four activity trackers and one sleep tracker were evaluated based on step count validity and heart rate validity.METHODS: The study enrolled 22 healthy volunteers in a walking test. Volunteers walked a 100 m track at 2 km/h and 3.5 km/h. Steps were measured by four activity trackers and compared to gyroscope readings. Two trackers were also tested on nine subjects by comparing pulse readings to Holter monitoring.RESULTS: The lowest average systematic error in the walking tests was -0.2%, recorded on the Garmin Vivofit 2 at 3.5 km/h; the highest error was the Fitbit Charge HR at 2 km/h with an error margin of 26.8%. Comparisons of pulse measurements from the Fitbit Charge HR revealed a margin error of -3.42% ± 7.99% compared to the electrocardiogram. The Beddit sleep tracker measured a systematic error of -3.27% ± 4.60%.CONCLUSION: The measured results revealed the current functionality and limitations of the five self-tracking devices, and point towards a need for future research in this area.

KW - Journal Article

U2 - 10.3390/s17010211

DO - 10.3390/s17010211

M3 - Journal article

C2 - 28117736

VL - 17

JO - Sensors

JF - Sensors

SN - 1424-3210

IS - 1

M1 - 211

ER -