THE EFFECTS OF VARIED LOADING ON THE POWER OUTPUT OF A JUMP SQUAT IN FEMALE UNIVERSITY RUGBY UNION PLAYERS

Abstract

The purpose of this study was to identify what load, expressed as a percentage of one repetition maximum of back squat, produced peak power output in a jump squat. This was done in order to identify the optimal load, with the view of applying it to power training within female rugby union players. Fifteen females representing Cardiff Metropolitan University (20.29 ± 0.76 years, 64.11 ± 6.52 kg, 164.14 ± 4.18 cm) volunteered to participate in this research. There were two data collection sessions; the initial session was conducted to obtain the participants’ 1-RM back squat, followed by a jump squat familiarisation session to ensure all participants were technically capable. The second session consisted of the jump squat testing over the four loads. Participants who played forward positions were tested first, with backline players after. Both sessions took place within the same week. The results showed that 0% 1-RM was found to maximise peak power output of the jump squat. This load was found to be significantly different to 30%, as well as visible differences between other loads of 50 and 70% 1-RM. It can be concluded that the optimal load to train for peak power in female rugby union players is 0% of their 1-RM. Strength and conditioning coaches should take the findings of this study into account when planning and delivering power sessions in female rugby union players in order to maximise their performance.