Survey responses for adoption and maintenance in teams in which all players performed the Nordic hamstring exercise (NHE) (n=5) and teams in which only some players performed NHE (n=11)
| Team training (n=5) | Individual training (n=11) | |
| Use of the initial NHE progression at the start of the season | Yes (n=3) | Yes (n=8) |
| Use of the initial NHE progression, which players | All players (n=3) | Only previous hamstring injury (n=7), Other selection criteria (n=1) |
| Use of the initial NHE progression, proportion of squad | >75% (n=2); <25% (n=1) | <25% (n=8) |
| Use of the weekly NHE maintenance protocol during the season | Most/every week (n=5) | Most/every week (n=4); Sporadically/unknown (n=6) |
| Use of the weekly NHE maintenance protocol, which players | All players (n=5) | Only previous hamstring injury (n=9); Other selection (n=1) |
| Use of the weekly NHE maintenance protocol, proportion of squad | >75% (n=5) | 25%–74% (n=3); <25% (n=7) |
| Use of any other (modified) NHE protocol at the start of the season | Yes (n=2) | Yes (n=7) |
| Use of modified NHE protocol during the season | Most/every week (n=2) | Most/every week (n=4); Sporadically/unknown (n=3) |
| Use of modified NHE protocol, which players | All players (n=2) | Only previous HSI (n=6); Other selection (n=1) |
| Use of modified NHE protocol, the proportion of first team squad | >75% (n=2) | Yes (n=8) |