Dietary Bioactives: Establishing a Scientific Framework for Recommended Intakes

In the United States, dietary reference intakes describe the relations between nutrient intakes and indicators of adequacy, prevention of disease, and avoidance of excessive intakes among healthy populations for essential nutrients but not dietary bioactive components (DBCs), whose absence from the diet is presumably not deleterious to health (i.e., does not cause a deficiency syndrome). An appropriate framework is needed for establishing recommended intakes for which public health messages and food labeling for DBCs can be derived, because their putative health benefits may not be readily defined in the context of nutritional essentiality. In addition, a myriad of factors make determining their intake and status and investigating their discrete contributions to health particularly challenging. Therefore, the ASN Dietary Bioactive Components Research Interest Section felt it worthwhile to convene a special “hot topic” session at the 2014 Experimental Biology meeting to discuss this issue and serve as a call for future scientific dialogue on establishing a framework for recommended intakes of DBCs. This session summary captures the discussions and presentations that transpired during this session.     

A scoping review of time-use research in occupational therapy and occupational science

Background: Time use is a defining interest within occupational therapy and occupational science. This is evident through the range of contributions to the disciplinary knowledge base. Indeed it has been suggested that time-use methods are amongst the most established research techniques used to explore aspects of human occupation. However, the extent and nature of such activity in occupational therapy and occupational science has not been examined to date. Aim: This study sought to map the extent and nature of time-use research in occupational therapy and occupational science journals and the extent to which studies explored the relationship between time-use and health. Method: A scoping review method was used. Results: Sixty-one studies were included. Scandinavian countries contributed the largest number of studies (n = 16, 26%). While time-use diaries were used most frequently (n = 30, 49%) occupational therapists and occupational scientists have developed a range of data-collection instruments. Forty-nine studies (80%) focused on time-use in clinical or defined population sub-groups. Ten studies (16%) included an empirical examination of the relationship between time-use and health. Conclusion: Future research should examine time-use and health amongst well populations across the lifespan and in different parts of the world.