Background: Purpose: This research aimed to examine the effects of TRX and resistance band training, both incorporating the Bosu Ball, on developing passing skills and specific physical abilities in junior female basketball players. Methods The study involved 25 basketball players under 16 from the Al-Arish Sports Club in North Sinai. A purposive sample of 12 players was divided into two experimental groups, each consisting of 6 players. A pilot study was also conducted to establish the validity of the tests. The first group trained with TRX and the Bosu Ball, while the second group used resistance bands with the Bosu Ball. The results indicated statistically significant improvements in both groups. The TRX group showed greater improvements in passing skills and physical abilities, with higher percentages of improvement. The resistance band group also improved, but to a lesser extent, suggesting that the elasticity of resistance bands had a more limited impact when combined with the Bosu Ball. Both training methods effectively enhanced the targeted skills, but the TRX with Bosu Ball showed superior results. In conclusion, while resistance bands are more effective without the Bosu Ball, TRX exercises on the Bosu Ball proved highly beneficial for developing the specific physical abilities of junior female basketball players.