High-Intensity Static Stretching in Quadriceps Is Affected More by Its Intensity Than Its Duration
A previous study reported that 3-min of high-intensity static stretching at an intensity of 120% of range of motion (ROM) did not change the muscle stiffness of the rectus femoris, because of the overly high stress of the stretching. The purpose of this study was to examine the effects of high-inten...
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Published in | Frontiers in physiology Vol. 12; p. 709655 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Frontiers Media S.A
05.07.2021
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Subjects | |
Online Access | Get full text |
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Summary: | A previous study reported that 3-min of high-intensity static stretching at an intensity of 120% of range of motion (ROM) did not change the muscle stiffness of the rectus femoris, because of the overly high stress of the stretching. The purpose of this study was to examine the effects of high-intensity static stretching of a shorter duration or lower intensity on the flexibility of the rectus femoris than that of the previous study. Two experiments were conducted (Experiment 1 and 2). In Experiment 1, eleven healthy men underwent static stretching at the intensity of 120% of ROM for two different durations (1 and 3 min). In Experiment 2, fifteen healthy men underwent 3-min of static stretching at the intensity of 110% of ROM. The shear elastic modulus of the quadriceps were measured. In Experiment 1, ROM increased in both interventions (
p
< 0.01), but the shear elastic modulus of the rectus femoris was not changed. In Experiment 2, ROM significantly increased (
p
< 0.01), and the shear elastic modulus of the rectus femoris significantly decreased (
p
< 0.05). It was suggested that the stretching intensity (110%) is more important than stretching duration to decrease the muscle stiffness of the rectus femoris. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 This article was submitted to Exercise Physiology, a section of the journal Frontiers in Physiology Reviewed by: David George Behm, Memorial University of Newfoundland, Canada; Denis César Leite Vieira, Faculdades Integradas e Colégio, Brazil Edited by: Nicolas Babault, Université Bourgogne Franche-Comté, France |
ISSN: | 1664-042X 1664-042X |
DOI: | 10.3389/fphys.2021.709655 |