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Browsing by Author "Bell, Chris, committee member"

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    Exploring daily-level characteristics of the cannabis-exercise relationship
    (Colorado State University. Libraries, 2024) Stallsmith, Vanessa T., author; Karoly, Hollis, advisor; Prince, Mark, committee member; Graham, Dan, committee member; Bell, Chris, committee member
    Physical inactivity is a growing public health concern. According to the Centers for Disease Control and Prevention, only 53.3% of U.S. adults meet the recommendation for aerobic physical activity, and alarmingly, only 23.2% meet the recommendation for both aerobic and muscle-training activity. This leads researchers to wonder what strategies or behaviors may facilitate exercise engagement. Interestingly, preliminary research has shown that cannabis, one of the most widely used substances in the United States, may be positively related to physical activity. However, most research on cannabis and exercise has been cross-sectional and administered low doses of low-THC cannabis, which is not representative of common legal-market cannabis products or typical use patterns in the U.S. Additionally, these studies did not evaluate other factors that may occur in the context of the cannabis-exercise relationship such as affect. The current study will leverage a daily-diary design to explore relationships between exercise, cannabis use, and affect. It will also characterize a sample of participants who both use cannabis and frequently exercise in terms of their demographics, cannabis use, exercise engagement, exercise enjoyment, goal attainment, and motives for combining cannabis with exercise. Overall, this study aims to (1) characterize daily-level associations between exercise engagement and cannabis use, (2) explore daily-level associations between exercise engagement and affect over the course of the study, and (3) utilize descriptive statistics to characterize the sample in order to understand who is likely to use cannabis and exercise, how they do it, why, and their resultant experiences.
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    Relationships among postpartum maternal body composition, breastfeeding, docosahexaenoic acid (DHA) status, and physical activity
    (Colorado State University. Libraries, 2016) Pendleton, Wesley D., author; Harris, Mary, advisor; Melby, Chris, committee member; Bell, Chris, committee member
    BACKGROUND: The time periods of pregnancy and lactation are recognized as times of changes in maternal weight and high bone turnover and theoretically can be transitional time periods regarding female body composition. We aim to inquiry associations between postpartum body composition, breastfeeding, maternal docosahexaenoic acid (DHA) status and intake, and physical activity. METHODS: 27 women 37.3 ± 17.3 months postpartum participated. Blood samples were assessed for DHA. DEXA analyses provided body composition data. Pearson’s correlations and linear regression models tested for significance. RESULTS: Total MET hours per week significantly positively correlated with whole body BMD and lumbar BMC. Both physical activity and RBC DHA explained significant amounts of variance within lumbar and pelvic BMC. CONCLUSIONS: Associations between exercise and bone mineralization within the postpartum period were further elucidated, though the role of DHA is still unclear.