C-14 Thematic Poster - Appetite Thursday, May 28, 2015, 8: 00 AM - 10: 00 AM Room: 26A
Appetitive Responses to Exercise Using a Novel Technique
1125 Board #6 May 28, 8
00 AM - 10
Visual analogue scales (VAS) are commonly used for assessing appetite sensations; however, they are limited by their highly subjective nature.
PURPOSE: To determine the precision and utility of a bi-polar mixed scale form of a VAS adapted as a tool to assess food consumption after instructions to eat a test food until “satisfied” (i.e., comfortably full).
METHODS: Eight female subjects between the ages of 23 and 25 years participated in three randomly ordered testing sessions on separate days after fasting for 10 hours. Upon arrival at the laboratory, subjects were fed a 400 kcal peanut butter and jelly sandwich and fasted for 4 hours while sedentary to standardize testing conditions. On two of the testing occasions, subjects were instructed to eat two amorphous 1-oz pieces of a peanut butter sandwich provided 3 min apart until they felt “satisfied”, which was described to them as the same as being “comfortably full”, using a bi-polar mixed scale VAS. A third session included a 30-min bout of intense treadmill running performed at an RPE of 15-17 before the feeding test.
RESULTS: No significant difference in sandwich intake was detected (p=0.293) between the two non-exercise sessions (Trial 1=5.2±1.2 oz; Trial 2=5.6±1.5 oz) suggesting that the bi-polar mixed scale is a reliable tool to assess sensations of feeling satisfied or comfortably full during feeding. Significantly less food was consumed between the exercise (4.1±1.7 oz) and non-exercise trials (p=0.014 and p<0.001).
CONCLUSION: This study suggests that the phenomenon of exercise-induced anorexia was observed and detectable using a novel food consumption test that is reasonably reliable. More research is needed in a larger population and under a variety of conditions.© 2015 American College of Sports Medicine