Assessment of strength parameters under isokinetic conditions in competitive climbers
Journal Title: Medycyna Sportowa - Year 2017, Vol 33, Issue 4
Abstract
Background. Accumulated overload is the most frequent reason of injuries in sport climbing. The injuries are usually sustained in the areas of the shoulder joint and rotator cuff. The aim of the study was to evaluate, the function of shoulder rotators in competitive climbers and non-climbers under isokinetic conditions. Material and methods. The sample comprised 61 participants, including 31 competitive climbers and 30 non-climbers. External and internal rotation tests were conducted under isokinetic conditions. Peak torque (PT), average power (AP) of the shoulder joint and the percentage values of external/ internal rotator ratios were subjected to analysis, Results. The PT obtained from external and internal rotators and the AP values obtained from both muscle groups in both upper limbs were higher in climbers (p<0.05). Conversely, the AP values in external to internal rotator ratios were lower in this group (p<0,05). Statistically significant differences were found between the dominant and the non-dominant upper limb, reflected by PT values obtained from internal rotators in climbers (test group) and the AP and PT values obtained from the external rotators in non-climbers (control group). The comparison of asymmetry between the upper limbs revealed 10 % asymmetry. The highest difference was observed in PT values obtained from internal rotators t (48% climbers, 73% non-climbers, p>0.05). No dependency was found between asymmetry and chronic pain. Conclusion 1.Adaptive changes observed in competitive climbers are similar to these occurring in athletes practicing sport disciplines that require lifting of the upper limbs above the head. 2. Adaptive changes influencing the assessment of shoulder joint function need to be confirmed in a larger sample of competitive climbers. Different movement velocities and muscle activation patterns should be included in future study protocols.
Authors and Affiliations
Sebastian Wójtowicz, Magdalena Wąsak, Anna Mosiołek, Zbigniew Wroński, Dariusz Białoszewski
Keywords
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