Table 1. Overview of SSG contents throughout the intervention duration.
SFG – session1 SFG – session 2 LFG – session 1 LFG – session 2
Week 1
 Five sets of 2-minute 2v2 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 3v3 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 2-minute 4v4 matches were played on a standard net (2.24m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 5v5 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
Week 2
 Five sets of 2-minute 2v2 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 3v3 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 2-minute 4v4 matches were played on a standard net (2.24m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 5v5 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
Week 3
 Five sets of 2-minute 2v2 matches were played on a shorter net (2.14m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 3v3 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 2-minute 4v4 matches were played on a shorter net (2.34m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 5v5 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
Week 4
 Five sets of 2-minute 2v2 matches were played on a shorter net (2.14m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 3v3 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 2-minute 4v4 matches were played on a shorter net (2.34m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Four sets of 3-minute 5v5 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
Week 5
 Six sets of 2-minute 2v2 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 3v3 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Six sets of 2-minute 4v4 matches were played on a standard net (2.24m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 5v5 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
Week 6
 Six sets of 2-minute 2v2 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 3v3 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Six sets of 2-minute 4v4 matches were played on a standard net (2.24m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 5v5 matches were played on a standard net (2.24m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
Week 7
 Six sets of 2-minute 2v2 matches were played on a shorter net (2.14m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 3v3 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Six sets of 2-minute 4v4 matches were played on a shorter net (2.34m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 5v5 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
Week 8
 Six sets of 2-minute 2v2 matches were played on a shorter net (2.14m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 3v3 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 2 and 1). The rule required each team to make three touches before returning the ball. Six sets of 2-minute 4v4 matches were played on a shorter net (2.34m). Each match took place with players occupying two front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball. Five sets of 3-minute 5v5 matches were played on a shorter net (2.34m). Each match took place with players occupying only one front and back row zones of the court (example, 1, 2, 3 and 6). The rule required each team to make three touches before returning the ball.
SFG: smaller formats of the game; LFG: larger formats of the game