Metabolism Worksheet ALTERNATE ASSIGN #1_ Mayanelson

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2085C

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Health Science

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Apr 3, 2024

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Name: Maya Nelson Spring 2024 N#: 01482137 Metabolism Lab Report This is the worksheet you will submit for your Metabolism Lab Report. Follow along with the steps for each exercise shown in the Metabolism Lab ppt and in the Metabolism Handout. Do the calculations using information for the hypothetical individual below and enter the answers (and show your calculations!) on this worksheet. Make sure to show your work and to include correct units for each answer in order to receive full credit!!! Use the following information to complete your assignment: Mary… 20-year-old FEMALE; weight: 150lbs.; height: 5ft 4in Exercise 1: Calculate average BMR and Daily Caloric Needs 1. Calculate Mary’s BMR using the Harris-Benedict formula. ______________1,513 kcal/day________________________ BMR = 655.1 + (9.563 × 68.0389) + (1.850 × 162.56) - (4.676 ×20) 2. Activity multiplier… calculate Mary’s adjusted BMR based on activity level. Mary has a lightly active lifestyle so her activity multiplier is 1.375. _______________2080.3 kcal/day________________________ 1513 x 1.375 3. Calculate Mary’s BMR range (+/- 10% of adjusted BMR). *This calculation represents Mary’s estimated daily caloric needs. ________________________________________ Adjusted BMR range = 2080.3 kcal/day x 0.1 = 208.03 kcal/day Low end of range = (2080.3 – 208.03) kcal/day = 1872.27 kcal/day High end of range = (2080.3 + 208.03) kcal/day = 2288.33 kcal/day BMR range =1872.27 – 2288.33 kcal/day

4 . Mary kept a Food Journal for 7 days. She calculated her Average Daily Caloric Intake based on her Food Journal. Her Average Daily Caloric Intake is 1650 kcal/day. Compare Mary’s Average Daily Caloric Intake to her BMR Range from question #3… Was Mary’s daily caloric intake above, below, OR within her BMR range?; What adjustments could she make to her diet and/or lifestyle to stay within her BMR range? Mary’s was below her range. To improve it she could eat more snacks during the day and try eating something every morning to start her days off with nutrition. Also, just making sure she has at least 2 meals a day. Exercise 2: Determine max HR, VO 2 max, training HR, and Energy Usage 1. Determine Mary’s max HR by using the formula 220 - age. __________220-20 = 200 beats/min______________________________ 2. Using the graph (O 2 Consumption vs. HR), determine O 2 consumption at Mary’s max HR. _______________2.8 LO2/min__________________________ 3. Convert Mary’s O 2 consumption at max HR to ml/min. ______________2800 mLO2/min___________________________ 2.8 x 1000=2800 4. Determine Mary’s body weight in kg. ______________68.1kg___________________________ 150/2.2= 68.18 5. Calculate Mary’s VO 2 max by dividing ml O 2 /min by body weight in kg.

_____________41.1____________________________ 2800mLO2/68.1kg= 41.11 Now relate Mary’s O 2 usage at VO 2 max to kcals burned. How many calories is Mary burning when she is working out as hard as she possibly can (i.e. at her VO 2 max)?… 6. Calculate Mary’s kcal burned per minute at VO 2 max using equations in ppt. _______________13.50 kcal/min__________________________ (4.825kcal/1LO2) x (1LO2/1000mLO2) x (41.1/(kg/min)) x 68.1kg = 13.50 kcal/min --------------------------------------------------------------------------------------------------------------------- Most people don’t exercise at their VO 2 max, so let’s do the previous calculations again now using Mary’s training HR… 1. Determine Mary’s training HR using the formula max HR x .85 ___________170 beats/min______________________________ 200 x 0..85= 170 2. Using the graph (O 2 Consumption vs HR), determine Mary’s O 2 consumption at her training HR. __________2.4 O2/min_______________________________ 3. Convert Mary’s O 2 consumption at training HR to ml/min. ____________2400LO2/min_____________________________ 2.4 x 1000= 2400 4. Determine Mary’s body weight in kg. ____________68.1 kg_____________________________ 150 x 2.2= 68.1 5. Calculate Mary’s VO 2 by dividing ml O 2 /min by body weight in kg.

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