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Acute effects of static and proprioceptive neuromuscular facilitation stretching on hamstrings muscle stiffness and range of motion : arandomized cross-over studyŽeleznik, Petra, 1998- ...This study aimed to compare the acute effects of static stretching (SS) and proprioceptive neuromuscular facilitation (PNF) stretching on hamstrings flexibility and shear modulus. Sixteen ... recreationally active young volunteers participated in a randomized cross-over study. Participants underwent an aerobic warm-up (WU), followed by either SS or PNF stretching. Range of motion (RoM) during passive straight leg raise and active knee extension, as well as shear modulus of the biceps femoris (BF) and semitendinosus (ST) muscles, were measured at baseline, post-WU, and post-stretching. Both stretching techniques significantly increased RoM, with no differences observed between SS and PNF (p < 0.001; η2 = 0.59–0.68). However, only PNF stretching resulted in a significant decrease in BF shear modulus (time×stretching type interaction: p = 0.045; η2 = 0.19), indicating reduced muscle stiffness. No changes in ST shear modulus were observed after either stretching technique. There was no significant correlation between changes in RoM and shear modulus, suggesting that the increase in RoM was predominantly due to changes in stretch tolerance rather than mechanical properties of the muscles. These findings suggest that both SS and PNF stretching can effectively improve hamstring flexibility, but PNF stretching may additionally reduce BF muscle stiffness. The study highlights the importance of considering individual muscle-specific responses to stretching techniques and provides insights into the mechanisms underpinning acute increases in RoM.Source: European journal of applied physiology. - ISSN 1439-6319 (Vol. 124, iss. 3, 2024, str. 1005-1014)Type of material - article, component part ; adult, seriousPublish date - 2024Language - englishCOBISS.SI-ID - 167438083
Author
Železnik, Petra, 1998- |
Jelen, Amadej |
Kalc, Klemen |
Behm, David G. |
Kozinc, Žiga
Topics
warm-up |
flexibility |
ultrasound |
elastography |
compliance |
ogrevanje |
gibljivost |
ultrazvok |
elastografija |
prožnost
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source: European journal of applied physiology. - ISSN 1439-6319 (Vol. 124, iss. 3, 2024, str. 1005-1014)
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Železnik, Petra, 1998- | ![]() |
Jelen, Amadej | ![]() |
Kalc, Klemen | ![]() |
Behm, David G. | ![]() |
Kozinc, Žiga | 51596 |
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