Fallacy

Student’s Name: ……………………………………….

Student’s ID Number: ………………………………….

Nutrition and Wellness Alternative, 2012

Practical Exercises on Energy and Fitness

Answer all FIVE (5) questions. Details of steps/calculations taken to arrive at the answers must be shown.

Submit completed exercises at the end of this practical session @ Tuesday 31 July 2012.

Q1. Body mass can predict energy expenditure with reasonable accuracy

at the walking speeds shown in the table below.

If your body mass is 54 kg and you walk at a speed of 6.44 km/hr, how much energy will you expend in 30 minutes?

|Speed of Walking |Body Mass |

| |kg |45 |54 |64 |73 |82 |91 |

mph |km/hr |lb |100 |120 |140 |160 |180 |200 | |2.0 |3.22 |

Kcal expended per minute |2.2 |2.6 |2.9 |3.2 |3.5 |3.8 | |2.5 |4.02 | |2.7 |3.1 |3.5 |3.8 |4.2 |4.5 | |3.0 |4.83 | |3.1 |3.6 |4.0 |4.4 |4.8 |5.3 | |3.5 |5.63 | |3.6 |4.2 |4.6 |5.0 |5.4 |6.1 | |4.0 |6.44 | |4.1 |4.7 |5.2 |5.8 |6.4 |7.0 | |

ANSWER:

Q2. Mr Overweight weighs 120 kg but is otherwise free from other chronic diseases.

a) How much body weight, and at what rate, would you advise him

to lose?

b) What type of physical activity would you recommend him? Give details of appropriate physical activity, including approximate MET value and duration.

ANSWER:

Q3. Ms Plump weighs 60 kg and has been jogging at a steady pace (MET=8.0) on the treadmill for 20 minutes. She then felt a bit tired and reduced the pace to a slow jog equivalent to MET=6.0 for a further 20 minutes. How much energy did she expend during that total 40-minute period?

ANSWER:

Q4. I weigh 120 kg and was advised to cut back on 900 kcal...