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Table 1 Item groups, categories, and factors of the observation form for basketball

From: Collision with opponents—but not foul play—dominates injury mechanism in professional men’s basketball

Item group

Category

Factor

I

General

Identification code of injury, club, date of match, type of competition (league match, cup match), number of match (e.g. league match), type of match (home, away), match minute of injury, playing position of injured player (point guard (PG), shooting guard (SG), small forward (SF), power forward (PF), center (C))

II

Court area

7 frontcourt and 7 backcourt zones

III

Ball possession

Injured player, own team, direct opponent, opponent team, none

 

Game action

General: standing, starting, running, sprinting, side-step, stopping, change-of-direction, taking-off, being mid-air, landing

  

Basketball-specific: passing, lay-up/dunking, catching, penetration, shooting, blocking, screening/picking, closing out, boxing out, rebounding, other 1-on-1 situation, faking, fighting for the ball, screen defense, posting up, help defense, other

 

Game phase

Set offense, fast break, transition defense, halfcourt defense, securing the ball, other

 

Floor contact

Both legs, single leg, no contact

 

Interaction with other players

No other player, teammate, opponent, both

 

Foul play subjective*

No foul, foul play by opponent, foul play by teammate

 

Referee decision

No foul, foul play by opponent, foul play by injured player

  

No penalization, defensive foul, unsportsmanlike foul, disqualifying foul

VI

Main mechanism

Contact, indirect contact, non-contact

 

Detailed mechanism

(a) Collision with opponent, collision with teammate, collision with ball, other collision, hit/push of opponent, pull/hold of opponent, other interaction with opponent

  

(b) Fall, ankle twist, knee twist, slip, overload, other

V

Injured body site

Head, neck, shoulder, upper arm, elbow, lower arm, wrist/hand, finger, trunk, hip, thigh, knee, lower leg, ankle/foot, unidentified

 

Initial contact with player's body site*

Head, neck, shoulder, upper arm, elbow, lower arm, wrist/hand, finger, trunk, hip, thigh, knee, lower leg, ankle/foot, unidentified

 

Initial contact with body site of opponent*

Head, neck, shoulder, upper arm, elbow, lower arm, wrist/hand, finger, trunk, hip, thigh, knee, lower leg, ankle/foot, unidentified

  1. *Optional