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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Women's Health 1/2015

Feasibility of three wearable sensors for 24 hour monitoring in middle-aged women

Zeitschrift:
BMC Women's Health > Ausgabe 1/2015
Autoren:
Jennifer Huberty, Diane K. Ehlers, Jonathan Kurka, Barbara Ainsworth, Matthew Buman
Wichtige Hinweise
Diane K. Ehlers, Jonathan Kurka and Barbara Ainsworth contributed equally to this work.

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

All authors contributed equally to this work. JH conceived the study, designed and implemented the study and prepared the manuscript. DE implemented the study, collected, entered, and analyzed data and contributed to preparation of the manuscript. JK analyzed data and contributed to preparation of the manuscript. BA assisted in design and implementation of the study and preparation of the manuscript. MB helped design the study, supervised data collection, processing, and analysis, and contributed to preparation of the manuscript. All authors read and approved the final manuscript.

Abstract

Background

The purpose of this study is to determine the feasibility of three widely used wearable sensors in research settings for 24 h monitoring of sleep, sedentary, and active behaviors in middle-aged women.

Methods

Participants were 21 inactive, overweight (M Body Mass Index (BMI) = 29.27 ± 7.43) women, 30 to 64 years (M = 45.31 ± 9.67). Women were instructed to wear each sensor on the non-dominant hip (ActiGraph GT3X+), wrist (GENEActiv), or upper arm (BodyMedia SenseWear Mini) for 24 h/day and record daily wake and bed times for one week over the course of three consecutive weeks. Women received feedback about their daily physical activity and sleep behaviors. Feasibility (i.e., acceptability and demand) was measured using surveys, interviews, and wear time.

Results

Women felt the GENEActiv (94.7 %) and SenseWear Mini (90.0 %) were easier to wear and preferred the placement (68.4, 80 % respectively) as compared to the ActiGraph (42.9, 47.6 % respectively). Mean wear time on valid days was similar across sensors (ActiGraph: M = 918.8 ± 115.0 min; GENEActiv: M = 949.3 ± 86.6; SenseWear: M = 928.0 ± 101.8) and well above other studies using wake time only protocols. Informational feedback was the biggest motivator, while appearance, comfort, and inconvenience were the biggest barriers to wearing sensors. Wear time was valid on 93.9 % (ActiGraph), 100 % (GENEActiv), and 95.2 % (SenseWear) of eligible days. 61.9, 95.2, and 71.4 % of participants had seven valid days of data for the ActiGraph, GENEActiv, and SenseWear, respectively.

Conclusion

Twenty-four hour monitoring over seven consecutive days is a feasible approach in middle-aged women. Researchers should consider participant acceptability and demand, in addition to validity and reliability, when choosing a wearable sensor. More research is needed across populations and study designs.
Literatur
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