Are Fitbits implicated in body image concerns and disordered eating in women?

Using a daily monitoring framework, we examined the psychological consequences of Fitbit self-tracking on state body satisfaction, disordered eating (DE; i.e., binge eating and dietary restraint), levels of exercise engagement, and motivations (appearance vs. fitness/health) in adult women. A further aim within the Fitbit group was to assess whether the level of steps achieved on 1 day would be associated with the state-based outcome measures on the subsequent day.

In total, 262 participants who had never used a wearable fitness self-tracking device were allocated to a Fitbit (n = 101) or control condition (n = 161). Participants provided baseline data on sociodemographics, eating pathology, and exercise and then completed a 10-day Ecological Momentary Assessment (EMA) protocol assessing exercise amount and motives, body satisfaction, and DE symptoms via a mobile application. Those in the Fitbit condition wore a Fitbit over the entire assessment period.

The use of a Fitbit over a 10-day period had no significant effects on exercise behavior or body satisfaction compared to a control group. However, those in the Fitbit group were more likely to exercise to reach fitness goals and less likely to engage in dietary restraint and binge-eating behavior. Among participants in the Fitbit condition, steps achieved the previous day were not predictive of exercise engagement, body satisfaction, or DE symptoms on the subsequent day.

Our study failed to link fitness self-tracking to body dissatisfaction and DE, at least in the early stages of use. Future research directions regarding alternative pathways through which self-tracking devices may exert negative influences are discussed. (PsycInfo Database Record (c) 2020 APA, all rights reserved).