Mansour Sahebozamani
Shahid Bahonar University of Kerman, Iran
Title: Effects of functional fatigue on position sense of elbow and shoulder joints in elite female table tennis players with upper crossed syndrome
Biography
Biography: Mansour Sahebozamani
Abstract
Muscle fatigue due to physical activity occurs in different parts of neuromuscular structures including the central nervous system, and neural control of muscle that cause reducing efficiency and increasing muscle injury. The present study aimed to assess the effects of functional fatigue as a risk factor for injury on position sense at the elbow and the shoulder girdle joints in the elite female table tennis players with upper crossed syndrome and also to compare with healthy players. This semi-experimental study was performed on 24 elite female table tennis players (age: 24.66±3.28 years) participating in the students Olympiad in 2014. The presence of upper crossed syndrome was diagnosed based on increased forward head angle and rounded shoulders angle. The group with upper crossed syndrome experienced higher increase in position sense at the elbow following fatigue protocol compared to healthy players (5.58 degrees versus 2.38 degrees, main effect of 0.67, p<0.001). The results showed no significant difference in the mean of angle reconstruction error between the two groups with and without abnormality after fatigue protocol before that (9.58 to 6.75 in group with upper crossed syndrome and 9.00 to 6.58 in healthy group, main effect of 0.01, p=0.53). Fatigue can decrease proprioception in the elbow joint, but this reduction was not seen in shoulder so the shoulder joint position sense may be increased after functional fatigue.