BACKGROUND: There is a growing interest in intermittent fasting as a method of body fat loss. However, research on time-restricted eating, a type of intermittent fasting, is more limited. The purpose of this study was to assess the effects of time-restricted eating on fat mass in women. METHODS: 20 healthy, young (21.3 years ± 1.2 years), body mass stable (± 2.27 kg in the past 6 months) women completed a 4week time-restricted eating study. During the intervention, participants restricted their

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... daily food intake to an 8-hour period, i.e., between 1200 to 2000 hours. Changes in fat mass and body mass were assessed via densitometry (Bod Pod ® ). Hunger, satisfaction, fullness, and adherence were assessed on a weekly basis by self-report. RESULTS: A 0.6 kg ± 1 kg decrease in body mass occurred after the 4 weeks (p = 0.015, n = 20) but changes in fat mass were nonsignificant. Women who performed strength training during the study experienced a 0.7 kg ± 0.5 kg decrease in fat mass (p = 0.037, n = 5). Overall protocol adherence was high (>5.5 d/wk) throughout the intervention. Hunger, satisfaction, and fullness remained constant over the study. Conclusions: Participants seemed to adapt to the time-restricted eating regime quickly and were able to sustain it over a 4-week