eTable 1. Search strategy for the literature review.

Step	Operator	Search terms
1		(„Painkiller abuse“ OR „pain medication“ OR analgesic* OR „anti-inflammatory drugs“ OR paracetamol OR ibuprofen OR NSAR OR NSAID*)
2	AND	(Physical activity OR sport OR physical training OR exercise OR physical performance)
3	AND	(Use OR abuse OR misuse)
4	NOT	Therapy