Week of November 23rd-27th Nutrition Notes
Week of November 23rd-27th Nutrition Notes 65915
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This 3 page Class Notes was uploaded by Stephanie Samar on Wednesday November 25, 2015. The Class Notes belongs to 65915 at University of Arizona taught by Jennifer Ricketts in Spring 2015. Since its upload, it has received 280 views. For similar materials see Nutrition, Food and You in Nutrition and Food Sciences at University of Arizona.
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Date Created: 11/25/15
November 23 and November 25 In class notes Chapter 10 Ergogenic Acids: • Foods, devices, dietary supplements, drugs that improve physical performance • Energy drinks • Caffeine toxicity Active for a lifetime • Selection of physical activities • Increase amount of walking • Reduce time spent sitting • Use stairs when possible • Park further rather than closer • Lift weights • Adopt moderately intense activities for leisure time Chapter 11 Prenatal period: • About 40 weeks o First trimester § 0-‐8 weeks-‐ fertilized egg divides (embryo) and organs develop § 8 weeks and after (fetus) § Most critical stage § Placenta o Second and third trimester § Prematurity § Low birth weight Fust term pregnancy lasts 38 to 42 weeks 1 trimester: • fertilized eggs travels through the fallopian tube and implants in the wall of the uterus § Mom donates X chromosome in mature egg (Ovum) § Dad donates either X or Y chromosome in sperm § Fertilization combines the XX or the XY chromosomes • XX= Girl • XY= Boy o Development of organs limb buds, and facial features o Embryos are extremely vulnerable to teratogens during this time Nutrition in Pregnancy • Physiological changes • Eating for two o Increased needs o RDA • Folate and iron needs o Adequate before pregnancy o If not there will be risks • Morning sickness • Cravings Trimester Weight First • Morning sickness • Cravings –Pica • No extra energy required Second • Maternal tissue grows o Blood volume, rbc, nutrient concentration o Kidney, blood flow, clearance, nutrient concentration o GI tract, motility, surface area, absorbtion o Mammary tissue o Adipose tissue o Immune system o 340 extra kcals on average Third • Fetal growth o ¾ of its weight in this time • Brain • Lungs • Nutrient shift • 450 extra calories on average Weight Gain • 1 trimester 0-‐13 weeks nd o 2 to 4 pounds • 2 trimester 14-‐27 weeks o 12 to 14 pounds • 3 trimester 28-‐40 weeks o 12 to 14 pounds • total= 26 to 32 pounds Recommended ranges of weight gain during pregnancy • Underweight 28-‐40 • Healthy weight 25-‐35 • Overweight 15-‐25 • Obese 11-‐20 Hypertension • Damage the mother’s kidneys • Increase risk of low birth weight • Increased risk of premature delivery o 8 percent of pregnancies in the US o Also protein in urine: Called preeclampsia Potential Complications: Gestational Diabetes • 7 percent of pregnancies in the US • Birth weight • Dependent on glucose th • 24 week screen