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Unit 11 Sports Nutrition

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by

Martin Wren

on 27 September 2016

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Transcript of Unit 11 Sports Nutrition

Energy Intake & Expenditure
Expenditure
& Balance
Energy Expenditure
Humans oxidise (metabolise) carbohydrate, protein, fat and alcohol to produce energy. The energy is needed:

To maintain body function, breathe, HR & Temperature
For physical activity - muscle contraction
For growth and repair, requiring new tissue
Task One
In groups, investigate and report back on one of the following measurements of Energy Expenditure:
Body Composition/Lean Body Mass
Percentage Body Fat/Skinfold Analysis
Bioelectric Impedance Analysis
Hydrodensitometry (Hydrostatic Weighing)
Body Weight Calorimetry (Direct/Indirect)
Factors Affecting Energy Balance
Nutritional Intake in relation to performance - Michael Phelps

Step 1
Unit 11 Sports Nutrition
Energy Intake and Expenditure

Energy Measurement
Energy is measured in either
joules
or
calories

A Joule (J) can be defined as the energy used when 1 kilogram (kg) is moved 1 metre (m) by the force of 1 Newton (n)

A Calorie (cal) can be defined as the energy needed to raise the temperature of 1 gram of 1 degree c

1 Calorie is equivalent to 4.184 joules
Energy Expenditure
The Energy Expenditure of a man or woman over the whole day is often divided into different components -

BMR (RMR)
Dietary Thermogenesis (DT)
Physical Activity (PA/PAL)
Adaptive Thermogenesis (AT)
Diet Induced Thermogenesis
The amount of energy utilised in the digestion, absorption and transportation of nutrients
Adaptive Thermogenesis
The ability of the body to meet the needs of the climate you're in. (Maintaining a normal temperature)
Physical Activity (PA/PAL)
This comprises of minor physical movement (such as shivering and fidgeting) as well as purposeful gross muscular work or physical exercise
Type of Exercise

Duration of Exercise

Intensity of Exercise
Frequency of Exercise

Recovery Time


When food is consumed (before/during/after)

Climate
Exercise goals
(Weight loss/muscle gain/muscle loss)

Training Programme Position
(pre-season, post-season or heavy intensity/light)
Age

Gender
General Health


Injury
Factors Affecting Energy Balance
Energy Balance
Amount of energy you take in (Input)
Equal to

Amount of energy you expand
(Output)


Negative Neutral Positive
(WL) (WG)


Energy Expenditure

The energy we metabolise (burn/calories) used to breathe, circulate blood, digest food, and be physically active


What to Include -

- What is it?
- How is it measured/calculated?
- Valid and Reliable
- Require Specialist Equipment?
Full transcript