The time course of passive stiffness responses following an acute bout of static stretching in healthy, elderly men.

Autor: Palmer TB; Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA., Farrow AC; Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA., Agu-Udemba CC; Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA., Mitchell EA; Department of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA.
Jazyk: angličtina
Zdroj: Physiotherapy theory and practice [Physiother Theory Pract] 2022 May; Vol. 38 (5), pp. 695-703. Date of Electronic Publication: 2020 Jun 24.
DOI: 10.1080/09593985.2020.1783729
Abstrakt: Background: The time course of passive stiffness responses following an acute bout of static stretching has received little research attention, particularly in older adults.
Objective: To determine the time course of the acute effects of static stretching on passive stiffness of the hamstrings in healthy, elderly men.
Methods: Fifteen elderly men (age = 70 ± 7 years) underwent two randomized conditions that included a control treatment and an experimental treatment of four, 15-s straight-leg raise static stretches. Passive stiffness was calculated as the slopes of the initial and final phases of the angle-torque curve at pre-treatment (Pre) and post-treatment time points of zero (Post0), five (Post5), and ten (Post10) minutes.
Results: Passive stiffness collapsed across phase was lower at Post0 ( P = .029, d = 0.64) and Post5 ( P = .042, d = 0.54) but not Post10 ( P > .999, d = 0.15) compared to Pre for the stretching treatment. There were no significant differences in passive stiffness (collapsed across phase) between any of the time points ( P > .999, d ≤ 0.14) for the control.
Conclusions: An acute bout of static stretching produced significant decreases in the passive stiffness characteristics of elderly men; however, these decreases returned to baseline values within 5 to 10 minutes.
Databáze: MEDLINE
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