Fig 1.
Study design and flow of study procedures.
Table 1.
Characteristics of study participants.
Fig 2.
Physiological and environmental recording of a male participant.
24-hour time series of his core body temperature (A), heart rate (B), physical strain index (C) and speed (D). 12-day time series of his near body temperature (E) and sum of signal vector magnitude of the tri-axial accelerometer signal (F). Additionally, 12-day time series of his light exposure (G), as well as wet bulb globe temperature (H) and air temperature (I) indoor (at home) and outdoor (weather station in the area).
Fig 3.
Completeness of data across devices.
Distribution of individual-level percentages of data recordings across various devices by boxplots and individual data points. A grey line indicates two individuals from the same household. 24-hour electrocardiography (Faros), core body temperature (Tcore) and global positioning system (GPS) recordings, as well as 12-day recordings of indoor wet bulb globe temperature (Hygrometer) and actimetry (GENEActiv).
Fig 4.
PSI scores from n = 38 24-hour recordings.
Average PSI profiles (A) and a histogram (B) of PSI from n = 19 women and n = 19 men.
Fig 5.
Responses to Likert-type items grouped for women and men.
The percentages at the edges of the bars are totals of all agreement or disagreement. Due to the rounding of percentages for visual clarity, the summed percentages across categories for each Likert item may not exactly equal 100% (±1%). This rounding does not affect the interpretation of the data.
Table 2.
Statements about the participants’ experience in dealing with the wearables.
Table 3.
Closed yes-no questions examining hindering factors for further participation in such a study setup (N = 40).