Effects of an 8-week Plyometric Training Programme on Sprint, Jump, and Agility Performance in Recreational Male Football Players Aged 14-16 Years

Change in 30 m sprint time

Sprint performance was assessed using the 30 m sprint test. Time was recorded in seconds using photocell timing gates. Lower values indicate better sprint performance.

Time frame: Baseline and immediately after the 8-week intervention

Change in vertical jump height

Vertical jump performance was assessed using the My Jump 2 application. Jump height was recorded in centimetres. Higher values indicate better jump performance.

Time frame: Baseline and immediately after the 8-week intervention

Change in 505 agility test time

Change-of-direction performance was assessed using the 505 agility test. Time was recorded in seconds. Lower values indicate better agility performance.

Time frame: Baseline and immediately after the 8-week intervention

Change in standing long jump distance

Horizontal jump performance was assessed using the standing long jump test. Jump distance was recorded in centimetres. Higher values indicate better horizontal jump performance.

Time frame: Baseline and immediately after the 8-week intervention

Change in quick feet test time

Footwork performance was assessed using a 10 m ladder-based quick feet test. Time was recorded in seconds. Lower values indicate better footwork performance.

Time frame: Baseline and immediately after the 8-week intervention

Change in zig-zag running test time

Multidirectional running performance was assessed using the zig-zag running test. Time was recorded in seconds. Lower values indicate better multidirectional movement performance.

Time frame: Baseline and immediately after the 8-week intervention