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E-book Sensing Health : Bodies, Data, and Digital Health Technologies
A gentle vibration on my wrist, like the press of a thumb, triggers an almost automatic reaction. My arm raises from a resting position, tucked at my side, swiveling so my elbow settles into the crease between my leg and pelvis, about two feet below my tilted head, perfectly aligned with the direction of my gaze. With the rotation of my wrist, a message emerges from the bottom of the screen of my Apple Watch: a small icon showing three concentric circles in red, green, and blue sits next to a header labeled “Activity.” Below, text in a bold white font tells me, “You can still do it. 16 calories and you’ll close your Move ring, Mikki. A brisk, 5-minute walk should do it” (Fig. 1). I raise my right hand and with a slight push on the dial to the right of the screen, the message scrolls down to reveal a statistic in boldface, comparing the number of calories I’ve burned to the set daily goal. A tiny bar graph visualizes spikes in my activity, showing tall lines early in the morning and tapering off as the day continues. As I glance at the screen, I can feel my upper body tense, pulling my shoulders toward my ears, muscles contracting inward. The sudden disruption of my relaxed, prone body with the tensing of muscles across my chest and back leads me to shift my hips back and forth, and stretch my legs forward as if my lower half is trying to resist the pull of my upper body at the screen’s instruc-tions. I have to actively will my shoulders to sink back down into the pillow behind my head, stretching my head to the left and right to release the ten-sion across my collarbone. As I feel my body sink further into the couch, I think to myself, “sixteen calories is nothing, you don’t have to move.” My habitual responses to the Apple Watch are partly related to how my body has learned the vibration patterns of the device; with a single, sharp pulse to my wrist, I may lift the screen to my gaze and watch the text mes-sage pop up on the screen, or the repeated vibration against my skin may cause me to stop all my actions and see who is calling on my phone. How-ever, the imperative to move—to burn more calories in pursuit of a daily goal—cannot be reduced to a Pavlovian training of my body. The power of the message described above lies in the way it prompts not only a reaction but also a reflection on my body, my actions, and by extension, my health.The statistics outlined on the Apple Watch interface are meant to implicitly reflect my health—or at the very least, my efforts to perform, pursue, or maintain health. The Apple Watch is a common example of a smartwatch, which combines a range of features typically supported by a smartphone, including messaging to calendar and geolocation services, with health- and fitness-tracking features. The smartwatch is perhaps one of the most recognizable examples of digital health technology, or the growing market of health-related material technologies and the algorithms and analytical methods they use and support. Digital health technologies include a wide range of commercial and medical products, from digital patient records to popular wearable technologies, but all roughly aim “to support health systems in all countries in health promotion and disease prevention . . . by improving the accessibility, quality, and affordability of health services” to promote “patients’ wellbeing.”1 Popular digital health technologies like smartwatches locate these improvements in personal data tracking.
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