ACUTE EFFECTS OF TWO HIP FLEXOR STRETCHING TECHNIQUES ON KNEE JOINT POSITION SENSE AND BALANCE.
| Autor: | Aslan H; Western Washington University, Bellingham, WA, USA., Buddhadev HH; Better Health Thru Exercise, Kirkland, WA, USA., Suprak DN; Better Health Thru Exercise, Kirkland, WA, USA., San Juan JG; Better Health Thru Exercise, Kirkland, WA, USA. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | International journal of sports physical therapy [Int J Sports Phys Ther] 2018 Aug; Vol. 13 (5), pp. 846-859. |
| Abstrakt: | Background: Tightness of hip flexor muscles has been recognized as a risk factor for various musculoskeletal injuries in the lower extremities. Purpose: The purpose of this study was to examine the acute effects of two hip flexor stretching techniques (dynamic and hold-relax proprioceptive neuromuscular facilitation, HR-PNF) on hip extension (ROM), knee joint position sense (JPS) and balance in healthy college age students who exhibit tightness in hip flexor muscles. Study Design: Pretest-posttest randomized experimental groups. Methods: Thirty-six healthy college age students (mean = 22.37 years) with tight hip flexors participated in this study. Hip extension ROM, knee joint position sense and dynamic balance were tested pre- and post-stretching using a digital inclinometer, an iPod touch and the Y-Balance test, respectively. Subjects were randomly divided into dynamic and HR-PNF stretching groups. Three-way mixed analysis of variance was utilized to explore if an interaction existed between the groups in tested variables. Results: There was a significant effect of time on hip extension ROM in both groups ( p < 0.001). There was also a significant effect of stretch type on hip extension ROM ( p = 0.004) favoring hold-relax over dynamic stretching group. There was a non-significant effect of time on mean knee joint position replication error in both groups. There was a significant main effect of time on the Y-Balance test's mean distance of reach to posteromedial and posterolateral directions ( p < 0.001). There was also a significant main effect of directions of reach on distances achieved ( p < 0.001) favoring posterolateral over posteromedial, and the latter over anterior direction. Conclusions: The results of this study demonstrated the effectiveness of both HR-PNF and dynamic stretching techniques which resulted in a significant acute improvement in hip extension ROM and dynamic balance measures, with HR-PNF being more effective than dynamic stretch. However, there were no significant improvements in knee joint position replication over time in either stretching group. Level of Evidence: 2b. |
| Databáze: | MEDLINE |
| Externí odkaz: |
|