Quantitative analysis of zinc intakes between active and sedentary individuals
Cardiff Metropolitan University
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Background: Zinc deficiency can be a limiting factor in an athlete's diet, and could result in a reduction in performance. Zinc is an important mineral, and has many roles in the body. It is found in nearly a hundred different enzymatic reactions where it is used as a catalyst. These reactions are very important in DNA replication, RNA transcription and cell proliferation, which can control; strength, cardiac output, testosterone output and energy metabolism. Objective: To evaluate the difference in dietary zinc intake between active and sedentary individuals. Methods: Thirty participants, 15 active, and 15 sedentary, aged 18 to 55 years who were non smokers completed a 3 day weighed food diary where all foods and beverages are listed in grams or litres. Dietary analysis was performed using The Nutrition Program, and Netwisp version 3.0, where statistical analysis will be performed using Minitab statistical software. Results: The results suggested that physical activity is not directly linked to dietary zinc intake P: 0.794 (r= -0.027). There is a positive correlation (r = 0.603) between zinc intake, and caloric intake, therefore suggesting that increased energy intake, results in an increase in zinc consumption (P=0.000). Caloric intake also shows no correlation when compared to physical activity P = 0.553 (r= 0.061). Conclusion: Dietary zinc intakes have no statistical significance when related to physical activity, and does not support the hypothesis that as physical activity increases, dietary zinc intake decreases. Caloric intake also has no correlation when compared with physical activity, suggesting that diet does become affected by physical activity amongst the general population. However, zinc intake has a positive correlation with caloric intake, suggesting that an increased caloric intake will result in increased consumption of zinc.
BSc (Hons) Sports Biomedicine and Nutrition
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