A Player-hero with a high STRENGTH score can be tough and fit, or quick and alert, or physically attractive or imposing. Every aspect of an adventurer that relies on vigour or physical well-being is represented in the game by STRENGTH.

The One Ring 2e, p.29

All Skills in this category rely largely on the Player-hero’s physical aptitude. An adventurer with a high STRENGTH score is more likely to be imposing (Awe), to have a clear singing voice (Song), to be fit and agile (Athletics), to have good sight and hearing (Awareness, Hunting), and to possess skilful hands (Craft). STRENGTH Skill rolls are resolved using a Playerhero’s STRENGTH Target Number.

The One Ring 2e, p.60