The purpose of this study was to determine the effects of an eight-week plyometric training 2 intervention on measures of golf swing performance in highly skilled, adolescent golfers. Sixteen 3 male golfers were recruited to this study, being placed into two handicap and age-matched groups: 4 intervention and control. The intervention group completed an eight-week plyometric training 5 programme in addition to their golf-specific practice to study effects on clubhead speed (CHS), ball 6 carry distance (BCD) and other associated measures. The control group continued to undertake their 7 golf-specific training with no plyometric training. The intervention group demonstrated significant 8 (p<0.05) improvements in CHS and BCD between pre and post trials. The control group showed no 9 significant (p>0.05) changes in golf performance. The results suggest that in highly skilled adolescent 10 golfers, eight-weeks of plyometric training may help to improve CHS and BCD by approximately 3%. 11However, large between participant performance differences were observed after the training 12 intervention. It was concluded that, for golfers wishing to improve their CHS and BCD, a golf-specific, 13 plyometric training programme could play an important part in the athlete's training programme. 14 KEY WORDS 15Clubhead speed, ball carry distance, handicap, teenage athletes, adolescents, training.