Objectives The primary objective of this study was to examine the effects of one-session physical or mindfulness training on university students’ mood, attention and executive functions in two separate randomized studies. Methods Study 1 (physical activity intervention) was implemented in a seminar with 63 and Study 2 (mindfulness intervention) in another seminar with 28 university students. The physical intervention included stretching exercises, balancing tasks, and medium intensity cardiovascular activities. The mindfulness training included yoga exercises, guided attention, and a body scan. In the control conditions, students watched a 15-min fitness or yoga video, respectively. Several mood and attention scales, as well as executive functions were assessed before and after the intervention or control activity. A randomized within-subject cross-over design was applied in both studies. Results Repeated-measures analysis of variance revealed that participants in both intervention conditions reported mood to be more positive, more awake and calmer after the intervention compared to the control conditions. These effects were medium to large (Study 1: eta2 = .08-.30, Study 2: eta2 = .15-.30). Attention scores improved more relative to the control condition after the physical intervention (medium effect size, eta2 = .11). Executive function scores improved more relative to the control condition after the mindfulness intervention (medium effect size, eta2 = .17). Conclusions These results indicate that a short bout (15-min) of physical or mindfulness activity in a university learning setting positively affected dimensions of mood and cognition known to support academic learning.

Upholstered furniture remains a consumer fire hazard. Flame retardant technologies are necessary but may present a health risk from chemical exposure. This study developed methodologies for measuring exposure to flame retardants and flammability performance, comparing the effectiveness of differing flammability reduction strategies on upholstered chairs with and without added flame retardants and the use of a barrier material. The chemical analysis focused on volatile organic compounds (VOCs) and flame retardants. Open flame tests were conducted on chair assemblies, and smolder resistance tests were conducted on chair materials. Results showed that VOC inhalation exposure during consumer use was low for all chair types. However, VOCs were significantly elevated during the chair burns. The organophosphorus flame retardant used in this study was found in air, settled dust and dermal transfer samples. The chairs with a barrier material demonstrated significantly lower flammability hazards when compared to the other chair types. All assembled chairs did not meet the criteria for smolder testing, suggesting a lack of correlation with open-flame performance. This study demonstrated that combined human health and flammability advantages may be achieved for upholstered chairs constructed with an effective fire barrier material without any added flame retardants.