{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

08 - Heart beat Breathing Chemical reactions Cellular...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
nutri sci ENERGY 15:01 Energy (all energy comes from eating food and drinks) Conservation of energy o Energy is neither created nor destroyed Transformations of energy o Solar (all comes from the sun)-stored chemical (glucose)-chemical (fat)- chemical energy (reaction) or mechanical energy-ends up as heat!! Units Kilocalorie=calorie=kcal Food sources CHO 4kcal/gram Protein 4kcal/gram Fat 9kcal/gram Alcohol 7kcal/gram Energy Balance Weight reflects energy stores Energy intake (what we eat and drink)=energy expenditure o Positive energy balance-gaining weight-overweight o Negative energy balance-losing weight-underweight Energy expenditure 1. Basal metabolism (BMR) o Energy expenditure through involuntary activity only 
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Heart beat Breathing Chemical reactions Cellular processes 2/3 of total energy expenditure goes towards metabolism • 2. Physical Activity o Voluntary muscular activity o Compare to BMR Sedentary person activity might equal only 20% of BMR Heavy person activity might equal 80-100% of BMR o Compare activities by time Sitting-25 kcal/hour Rowing, running, cross country skiing, (a lot of muscle groups in repetitive motion) 1000-1500 kcal/hour • 3. Thermic Effect of Food o digest, absorb, transport, store o energy cost of use o 10% of intake 15:01 15:01...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern