Jumping with Encumbrance

Basic Set: Campaigns · p.352

For added realism, multiply jumping distances by the encumbrance
factors given under Encumbrance and Move (p. 17): ¥1 for None, ¥0.8 for
Light, ¥0.6 for Medium, ¥0.4 for Heavy, and ¥0.2 for Extra-Heavy.