Public Health Commons^™

Carbohydrates And Fungal Toxin Exposure Influence The Vaginal Microbiota, Metabolome, And Reproductive Health Of Women, Stephanie L. Collins

Electronic Thesis and Dissertation Repository

The reproductive health of women is influenced by microorganisms and their metabolites, namely those representing the vaginal microbiota and those producing toxins that are ingested. To manipulate the vaginal microbiota toward a health-associated, Lactobacillusdominant state, an approach adopting prebiotic lactulose was taken. Using batch culture, lactulose supported Lactobacillus maintenance and positively altered metabolites, while not disrupting indigenous L. crispatus epithelial adherence. The vagina also harbours abundant glycogen, but initial assumptions that lactobacilli utilize it were incorrect. I have now shown that glycogen selectively stimulates organisms associated with dysbiosis and L. iners in a self-limiting manner. Other compounds such as environmental …

Examining The Impact Of A Population-Based Intervention On Children's Physical Activity Levels: The Grade 5 Act-I-Pass Program In London, Ontario, Christine E. Smith

Electronic Thesis and Dissertation Repository

Childhood obesity is a major public health concern caused in part by decreasing levels of physical activity (PA). Identification of effective population level strategies for increasing children’s PA levels is critical for improving overall health. This thesis is comprised of two studies. Study 1 examines how naturally-occurring population-level PA interventions with children have been evaluated in previous studies by conducting a systematic review. A total of 15 papers were included for review and results suggest that naturally-occurring population-based PA interventions are generally effective in improving PA levels of children in a variety of PA domains. Eleven studies included additional evaluation …

P01. Examining The Community Food Environments For Elementary School-Aged Children In The City Of London And Middlesex County, Ontario, Catherine Dubreck

Western Research Forum

Background: Childhood obesity is a growing public health issue. In Canada, one in four children/youth are overweight or obese. Research suggests diet plays a crucial role in childhood obesity, and that prevalence rates of overweight or obesity among children in a neighborhood may relate to area socioeconomic characteristics and other environmental factors. The community nutrition environment (e.g., the type, location, and accessibility of food outlets) can influence dietary habits.

Methods: Using ArcGIS, public and private elementary school addresses were geocoded, food outlets were mapped, and both junk food outlet density and the modified retail food environment index were …