Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness

To clarify whether the relaxation period during stretching affects the degree of elevated shear rate and the degree of reduction of arterial stiffness, we examined relaxation duration to build an adequate stretching protocol. In Experiment 1, the changes in cardiac output, the shear rate in the post...

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Autores principales:	Yuya Higaki, Yosuke Yamato, Shumpei Fujie, Kenichiro Inoue, Mio Shimomura, Shosaku Kato, Naoki Horii, Shigehiko Ogoh, Motoyuki Iemitsu
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/651624094282456fbc8951a359efb07f
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spelling	oai:doaj.org-article:651624094282456fbc8951a359efb07f2021-11-25T05:54:23ZAcute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness1932-6203https://doaj.org/article/651624094282456fbc8951a359efb07f2021-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8592493/?tool=EBIhttps://doaj.org/toc/1932-6203To clarify whether the relaxation period during stretching affects the degree of elevated shear rate and the degree of reduction of arterial stiffness, we examined relaxation duration to build an adequate stretching protocol. In Experiment 1, the changes in cardiac output, the shear rate in the posterior tibial artery, and blood volume in the calf muscle were measured during recovery (0–60 s) from a single bout of one-legged passive calf stretching in 12 healthy young men. In Experiment 2, the effects of different relaxation periods (5-, 10-, 20-, and 60-s) of passive one-legged intermittent calf stretching (30-s × 6 sets) on the femoral-ankle pulse wave velocity (faPWV) as an index of peripheral arterial stiffness were identified in 17 healthy young men. As a result, the stretched leg’s shear rate significantly increased from 0 to 10th s after stretching. The muscle blood volume in the stretched leg significantly reduced during stretching, and then significantly increased during the recovery period after stretching; however, cardiac output remained unchanged during stretching and recovery. Additionally, the reduction in faPWV from the pre-stretching value in the stretched leg was significantly larger in the protocol with 10-s and 20-s relaxation periods than that in the non-stretched leg, but this did not differ in the 5-s and 60-s relaxation periods. These findings suggest that the relaxation periods of intermittent static stretching that cause a high transient increase in shear rate (via reperfusion after microvascular compression by the stretched calf muscles) are effective to reduce arterial stiffness.Yuya HigakiYosuke YamatoShumpei FujieKenichiro InoueMio ShimomuraShosaku KatoNaoki HoriiShigehiko OgohMotoyuki IemitsuPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuya Higaki Yosuke Yamato Shumpei Fujie Kenichiro Inoue Mio Shimomura Shosaku Kato Naoki Horii Shigehiko Ogoh Motoyuki Iemitsu Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness
description	To clarify whether the relaxation period during stretching affects the degree of elevated shear rate and the degree of reduction of arterial stiffness, we examined relaxation duration to build an adequate stretching protocol. In Experiment 1, the changes in cardiac output, the shear rate in the posterior tibial artery, and blood volume in the calf muscle were measured during recovery (0–60 s) from a single bout of one-legged passive calf stretching in 12 healthy young men. In Experiment 2, the effects of different relaxation periods (5-, 10-, 20-, and 60-s) of passive one-legged intermittent calf stretching (30-s × 6 sets) on the femoral-ankle pulse wave velocity (faPWV) as an index of peripheral arterial stiffness were identified in 17 healthy young men. As a result, the stretched leg’s shear rate significantly increased from 0 to 10th s after stretching. The muscle blood volume in the stretched leg significantly reduced during stretching, and then significantly increased during the recovery period after stretching; however, cardiac output remained unchanged during stretching and recovery. Additionally, the reduction in faPWV from the pre-stretching value in the stretched leg was significantly larger in the protocol with 10-s and 20-s relaxation periods than that in the non-stretched leg, but this did not differ in the 5-s and 60-s relaxation periods. These findings suggest that the relaxation periods of intermittent static stretching that cause a high transient increase in shear rate (via reperfusion after microvascular compression by the stretched calf muscles) are effective to reduce arterial stiffness.
format	article
author	Yuya Higaki Yosuke Yamato Shumpei Fujie Kenichiro Inoue Mio Shimomura Shosaku Kato Naoki Horii Shigehiko Ogoh Motoyuki Iemitsu
author_facet	Yuya Higaki Yosuke Yamato Shumpei Fujie Kenichiro Inoue Mio Shimomura Shosaku Kato Naoki Horii Shigehiko Ogoh Motoyuki Iemitsu
author_sort	Yuya Higaki
title	Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness
title_short	Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness
title_full	Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness
title_fullStr	Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness
title_full_unstemmed	Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness
title_sort	acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/651624094282456fbc8951a359efb07f
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Acute effects of the different relaxation periods during passive intermittent static stretching on arterial stiffness

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