View source for Strength and Weight Management (UFOAI)

==Encumbrance==
The maximum weight a soldier can carry is equal to their strength stat in kilograms. A soldier with a strength stat of 34 will be able to carry up to 34kgs. However, a soldier will become encumbered if they carry more than 50% of their maximum weight. So a soldier with a strength stat of 34 will see his TUs decrease if he is carrying more than 17kgs. A soldier will also receive increased TUs if they are carrying less than 20% of their maximum weight.

A soldier's TUs are calculated using the following equation:

 39 * ENCUMBRANCE_MODIFIER + SPEED * 20 / 100

The ENCUMBRANCE_MODIFIER depends on the weight carried:

* 1.0 = 20% or less of maximum weight
* 0.7 = 20-50% of maximum weight
* 0.4 = 50% or more of maximum weight

The official documentation is [http://ufoai.org/wiki/Concepts/Strength,_Weight_and_Equipment here].

==Strength Training==
Soldiers earn experience in the strength stat by carrying equipment into missions. The more equipment carried, the more experience the soldier will gain, up to a maximum of 125 points per mission. The formula for experience points is:

 50 * (weight / strength) / ENCUMBRANCE_MODIFIER

The official documentation is [http://ufoai.org/wiki/Skills/Improvement/v2.5 here].