Introduction: Paralympic sports, despite their rapid progress, have research gaps for screening, injury prevention, or identifying injury factors. One of the most popular Paralympic sports is wheelchair basketball, which is among the sports with a high prevalence of injuries in the upper limbs, especially in the shoulder joint. Due to performing a series of repetitive movements during training or playing, where the hand is placed in tight mechanics and above the head, it gradually causes injuries. Because players use wheelchairs in their daily life and use their upper limbs more, the risk of injury increases. The purpose of the research is to investigate the relationship between the ROM and the peak torque by the internal and external shoulder rotator muscles in the dominant and non-dominant hand of elite wheelchair basketball players.
Methodology: In the present study, ten elite male players of the national wheelchair basketball team participated in the preparatory camp for the Hangzhou Asian Games. The ROM and peak torque of the shoulder joint on the dominant and non-dominant sides of the players were measured at speeds of 60 and 180 deg/s in order to evaluate the internal and external rotator muscles using the Biodex isokinetic device. Six maximal, concentric-concentric contractions were taken from each subject. Statistical analysis was done using spss software version 27. To check the normality of the data, the Shapiro-Wilk test and the Pearson correlation test were used to check the relationship of the data at the significance level of p0.05.
Results: According to the results obtained, no significant difference was found between the range of motion and the produced torque of the internal and external rotator muscles at a speed of 60 deg/s, but at a speed of 180 deg/s the relationship between the range of motion and the produced torque in the internal and external rotation of the dominant side muscle and It was non-dominantly significant.
Conclusion: There is an inverse relationship between the ROM and the peak torque by the muscle. That is, internal rotators are stronger, especially on the dominant side, and because their ROM is reduced, they produce more force, and in external rotators, because they have more range of motion, they produce less force than the internal rotator, especially in the dominant hand. slow Due to the forward posture of the players, muscle imbalances and movement restrictions have been created in the joints, and because they have been strengthened in that direction, an inappropriate pattern has been formed, and movement patterns and misalignments must be corrected with more specific exercises.