Comparison of Shoulder Muscle Strength of Deaf and Healthy Basketball Players

Abstract

Purpose: It has still not been made clear whether the audio inputs from the environment may have on the muscle strength characteristics of people who spend long periods of their lives with hearing loss. The purpose is to evaluate shoulder muscle strength and endurance of deaf basketball (DB) players and to compare them with healthy basketball (HB) players. Methods:The study was carried out with a total of 26-man players including 13 players (years: 24±3) in DB group and 13 players (years: 22±2) in HB group. Internal rotator (IR) and external rotator (ER) muscles strength of shoulder dominant and non-dominant side was measured using an isokinetic dynamometer. Results: According to isokinetic test results, there was not a difference between two groups on either dominant or nondominant side in terms of ER and IR Nm/kg (p>0.05). The ER / IR ratio was different between the two groups in favor of HB players (p=0.017). The strength parameters of dominant extremities of players in both groups were found to be higher than nondominant extremity. Conclusions: As a result, IR and ER muscle strengths were similar in two groups, both groups were at risk for musculoskeletal injuries in terms of ER/IR ratio. It could be speculated that it is essential to design training programs with additional ER strengthening exercises to improve the balance between IR and ER muscles and minimize risk of injury. The dominant extremity was found to be stronger in both groups. In our opinion, symmetrical movement patterns will positively affect performance on dominant extremity.

Dinamometría isocinética y antropometría segmentaria como parámetros de lesión de los músculos rotadores de hombro en deportistas (Isokinetic dynamometry and segmental anthropometry as parameters for shoulder rotator Muscles injury in athletes)

“…De acuerdo a dichos valores, se mantiene la tendencia de un mayor torque para los RI del BD en comparación a los RE. Así mismo, los valores torque en los deportistas amateur, se encuentran en rangos similares a los deportistas con patrones de movimiento por encima de la cabeza (Batalha et al, 2012;Caicedo et al, 2017;Drapsin et al, 2019;Gonçalves et al, 2017;Katti et al, 2022;Suner-Keklik et al, 2020;Zapardiel et al, 2012) (Figura 2). Figura 2.…”

“…Dichos valores fueron similares a los reportados por Batalha et al 2012;Drapsin et al 2019& Zapardiel et al 2012, cuyo promedio para RI60°/s oscilan entre 26 N⋅m a 47 N⋅m y para los RE60°/s entre 23 N⋅m a 31 N⋅m (Batalha et al, 2012;Drapsin et al, 2019;Zapardiel et al, 2012). Sin embargo, autores como Caicedo et al 2017;Katti et al 2022& Suner-Keklik et al 2020, reportaron valores muy superiores a velocidad angular de 60°/s en jugadores de balón playa, voleibol y futbol, cuyos promedios para RI pueden ir desde 60 N⋅m a 160 N⋅m y para los RE entre 57 N⋅m a 132 N⋅m (Caicedo et al, 2017;Katti et al, 2022) mientras que a velocidad de 180°/s, los RI tuvieron un promedio de 39 N⋅m a 60 N⋅m y para los RE de 23 N⋅m a 27 N⋅m, 36 N⋅m . (Batalha et al, 2012;Caicedo et al, 2017;Drapsin et al, 2019;Gonçalves et al, 2017;Katti et al, 2022).…”