PMID- 28527951 OWN - NLM STAT- MEDLINE DCOM- 20180424 LR - 20220316 IS - 1095-8304 (Electronic) IS - 0195-6663 (Linking) VI - 116 DP - 2017 Sep 1 TI - Digital food photography technology improves efficiency and feasibility of dietary intake assessments in large populations eating ad libitum in collective dining facilities. PG - 389-394 LID - S0195-6663(16)30528-1 [pii] LID - 10.1016/j.appet.2017.05.025 [doi] AB - BACKGROUND: Accurate assessment of dietary intake continues to challenge researchers, especially in field, or non-laboratory settings. OBJECTIVE: In this study, digital food photography (DFP) methodology was used to assess nutritional intake (NI) of Soldiers participating in the US Army's Ranger Selection and Assessment Program (RASP). METHODS: During this high-intensity six-week course, Soldiers complete simulated operational missions, perform various military tasks, and importantly, eating time is severely limited. Therefore, this study provided an opportunity to evaluate the utility of DFP methods for accurate assessment of energy balance in conditions where consumption of large numbers of subjects must be completed in a very short periods of time (