The Science Of Energy Balance Calorie Intake and Physical Activity.

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Presentation transcript:

The Science Of Energy Balance Calorie Intake and Physical Activity

Bell Work 1.What is Energy? 2.Do living things require energy? 3.How do living things get their energy?

Things that living things do that use energy

Metabolism Basal Metabolism – the sum of all chemical reactions occurring in the body Basal Metabolic Rate (BMR) - The base level of energy required to maintain basic body functions Typical teens use 60 to 70 percent of their energy to maintain normal body function

Do all activities require the same amount of energy? Energy required to perform different activities varies What determines how much energy you use in a physical activity? Energy use is determined by both the intensity and the duration of the activity. Energy use is also determined by body size.

Bell Work 1. Explain basal metabolism. 2. What activities require a lot of energy? 3. What activities require little energy? If you forgot to finish your energy log complete it now.

Food Calorie Equal to 1,000 calories or 1 kilocalorie (kcal) Unit of heat energy 1 kcal is the amount of energy needed to raise a liter of water 1 degree Celsius

Website Class Codes ergy/activities/activities_toc.htm ergy/activities/activities_toc.htm 1 st Hour: gray nd Hour: red th Hour: gray th Hour: silver ergy/guide/nih_energy_masters.pdf ergy/guide/nih_energy_masters.pdf

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