Question

How many kcal from carbohydrates should someone weighing 154lb consume during a day when they will train at high intensity for 3.5 hours per day? No height or age is given. The answer choices are

a)1800kcal

b)2200kcal

c)2800kcal

d)3400kcal

Showing work is much appreciated.

Answer 1

Answer:-

Given :- weight of given person = 154lbs

Since 1 lbs = 0.45 kg

: . 154 lbs = 70kg.

1 gram of carbohydrates = 4 kcalories

Daily carbohydrates requirements for intense work

I.e 3-6 hour /day = 8-10 g/kg

A)

Now ; consider lower value i.e 8

Total carbohydrate required by given person = weight x 8

= 70 X 8

= 560gm

Convert it to calories by multiplying with 4 (since 1g of carbohydrates = 4 kcalories)

I.e 560 X 4 = 2240 kcalories.

B)

Now consider the upper value i.e 10

Total carbohydrate required by person = 70 X 10

=700gm

Covert it to calories

I.e 700 X 4 = 2800 kcalories.

Therefore , answer of choices are

a) 2200 and c) 2800