Lecture 14 - Energy Expenditure

# Lecture 14 - Energy Expenditure - Lecture 14 Background...

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1 Energy Expenditure Biology 1F25 for Biology Non-Majors Lecture 14 Background Reading Textbook, Chapter 8. See especially pages 156-160. The People Who Prepared This Lecture Harry Peery Jeff Stuart A couple of biologists had twins; one they called John, and the other they called Control.

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2 Science: a procedural manual Basic components 1.Experimental controls 2.Repetition (‘n =‘) 3.Statistical tests (P-value; look for <0.05) Reading a scientific paper The Hypothesis Or The Question Methods Results Discussion Determinants of 24h Energy Expenditure (EE) in Question? – What are the major components of 24EE? Methods? – Measure O 2 consumption in captive human while observing behaviour Results? – Many Conclusions? - Various The experimental chamber!
3 Notes: *Average % body fat is 16% (men) and 20% (women) *Fine print: mostly Southwestern American Indians; some diabetics, many obese. FFM = Fat Free Mass (the amount of body mass that has no fat). Expressing data What measurements were actually made? How is Energy Expenditure (EE) expressed (what units)?

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4 Typical data from a single individual Experimental controls Name two that were done and why A control experiment Same individual; different day
5 Partitioning variance using data from control experiments The relationship between activity and EE What is a correlation? Predictive ability; if A occurs, how likely is it that B will also occur? What is relationship between A and B? * Statistical test of correlation:

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## This note was uploaded on 06/10/2008 for the course BIOL BIOL-1F25 taught by Professor Peery during the Spring '08 term at Brock University.

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Lecture 14 - Energy Expenditure - Lecture 14 Background...

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