Comprehensive Two-Dimensional Gas Chromatography-Mass Spectrometry Analysis of Exhaled Breath Compounds after Whole Grain Diets.

Exhaled breath is a potential noninvasive matrix to give new information about metabolic effects of diets. In this pilot study, non-targeted analysis of exhaled breath volatile organic compounds (VOCs) was made by comprehensive two-dimensional gas chromatography-mass spectrometry (GCxGC-MS) to explore compounds relating to whole grain (WG) diets. Nine healthy subjects participated in the dietary intervention with parallel crossover design, consisting of two high-fiber diets containing whole grain rye bread (WGR) or whole grain wheat bread (WGW) and 1-week control diets with refined wheat bread (WW) before both diet periods.

Effects of humor on test anxiety and performance.

The present study evaluated the moderating effects of humor in test items on the hypothesized relationship between test anxiety and performance. Subjects initially completed anxiety scales, as well as coping-humor and sense-of-humor scales. 34 women and 26 men received achievement tests under one of three test conditions: (1) nonhumorous, (2) low-humor (15% of test items), or (3) moderate-humor (30% of test items).