Reproducibility of subjective appetite ratings and ad libitum test meal energy intake io overweight and obese males

摘要

Background: To determine whether changes in appetite and energy intake (El) can be detected and play a role in the effectiveness of interventions, it is necessary to identify their variability under normal conditions. We assessed the reproducibility of subjective appetite ratings and ad libitum test meal El after a standardised pre-load in overweight and obese males. Methods: Fifteen overweight and obese males (BMI 30.3 ± 4.9 kg/m2, aged 34.9 ± 10.6 years) completed two identical test days, 7 days apart Participants were provided with a standardised fixed breakfast (1676 kj) and 5 h later an ad libitum pasta lunch. An electronic appetite rating system was used to assess subjective ratings before and after the fixed breakfast, and periodically during the postprandial period. El was assessed at the ad libitum lunch meal. Sample size estimates for paired design studies were calculated. Results: Appetite ratings demonstrated a consistent oscillating pattern between test days, and were more reproducible for mean postprandial than fasting ratings.