Background: Increased joint stability as well as ability to maintain balance during daily routine and exercise is an important factor in improving performance and preventing injury. The purpose of the present study was to investigate the effect of eight-week self-myofascial Release (SMR) on knee joint position sense (KJPS) and dynamic balance (DB) in collegiate male athletes with hamstring shortness (HS).
Methods: In this quasi-experimental study, 24 collegiate male athletes with HS were randomly selected and randomly divided into experimental (n = 12) and control (n = 12) groups.
KJPS was measured by isokinetic dynamometer and DB using Y balance test before and after 8 weeks of SMR. The results were analyzed by SPSS software version 22 as well as dependent T-tests and covariance analysis. Significance level was considered 95% and alpha equal to or less than 0.05.
Results: The outcomes of dependent t-test showed that dynamic balance test scores (in all three directions of anterior, Posteromedial, Posterolateral and overall Y-score) increased in SMR group compared to control group (P = 0.001) but no significant difference was observed in KJPS values between the two groups (P = 0.493).
Conclusion: Based on the results, it seems that SMR with foam rolling is not suitable for increasing KJPS accurateness of athletes with short hamstring, but these exercises can be used to improve dynamic balance.