Author(s): XUAN, Q., MANYING, R., JIANG, Y., XINYI, W., Institution: BEIJING INSTITUTION OF SPORTS SCIENCE , Country: CHINA, Abstract-ID: 1457

INTRODUCTION:
Barbell Hip Thrust (BHT) and Barbell Glute Bridge (BGB) are training methods that primarily rely on external loads to develop the hip extensor muscles [1]. Insufficient development of the hip extensors can lead to poor performance, increased risk of knee injuries, or low back pain [2]. Both BHT and BGB utilize the active deficiency principle of multiarticulating muscles [3], but they differ in terms of support position. Previous studies have shown that changes in body and limb positions can affect muscle activation [4]. The aim of this study is to compare the effects of explosive power, sprint,and change of direction ability on lower limb performance using BHT and BGB.
METHODS:
24 members of the Beijing womens handball team (had no lower limb fractures and back injury within half a year; without undergone surgical procedures within the past year or absent from training or failed the test ) were recruited and randomly divided into BGB group,BHT group and control group.The 5RM values of BHT and BGB were measured conventionally before the experiment, and the experimental group was intervened with a 5*5 training method with a training load intensity of slightly less than 5RM, with intervals of no more than 2 minutes between sets [5], twice a week for 8 weeks.
Smart speed & Smart jump (Fusion Sport, Australia) was used to measure the 10m, 30m, 60m, Illinois, the SJ, CMJ and Jump Test before and after the experiment. A 20-minute standardized exercise preparation was performed by coach before each intervention with the training load of both groups consistent and included in the daily physical training plan (without any other gluteal bridge training mode).Two-way ANOVA was used for statistics. Significance was set at P<0.05. When ANOVA used the partial Eta square to represent the effect size, the cut-off points for small, medium, and large effect sizes were 0.01, 0.06, and 0.14, respectively.
RESULTS:
There was a significant difference in maximum strength before and after between the BHT group (p=0.004) and the BGB group (p=0.000). No significant differences were observed in the interaction of time and intervention for CMJ, Jump Test, 10m, 30m, and 60m sprints. The interaction between time and intervention in SJ showed significance (F2, 42=2.53; p=0.015, ES=0.132), with post-hoc tests demonstrating a significant difference between the BGB group and the control group (p=0.03). Similarly, the interaction between time and intervention in Illinois was also significant (F2, 42=3.89; p=0.028, ES=0.156), with post-hoc tests showing a significant difference between the BHT group and control group (p=0.01).
CONCLUSION:
BGB training can enhance SJ performance while BHT can improve change of direction ability in female handball players; however, neither training method demonstrated improvements in sprint performance. 1.Contreras et al.(2017) 2.Lane et al.(2017) 3.Schoenfeld et al.(2002) 4.Paoli et al.(2009) 5.Friedman et al.(2016)