Shear-wave velocity of the patellar tendon and quadriceps muscle is increased immediately after maximal eccentric exercise

Shear-wave velocity of the patellar tendon and quadriceps muscle is increased immediately after... Purpose To determine whether stiffness of the patellar tendon and quadriceps muscles is altered immediately after and 48 h after a single bout of maximal eccentric exercise of the knee extensor muscles. Methods Thirteen healthy individuals [group mean (SD) age 22.4 (3.5) years; 7 female] performed a single bout of maximal eccentric exercise of the non-dominant knee extensors, using an isokinetic dynamometer. Shear-wave velocity (an index of tissue stiffness) was recorded from the patellar tendon, vastus medialis (VM), rectus femoris (RF) and vastus lateralis (VL), before, following (post ), and 48 h after (post ) exercise. To investigate features of exercise induced muscle damage, 0 48 maximal voluntary isometric contraction (MVIC) and self-reported pain and stiffness (numerical rating scales 0 = no pain/ stiffness to 100 = worst imaginable pain/stiffness) were measured before, post , and pos t exercise. Serum creatine kinase 0 48 (CK) was measured before and post exercise. Results Compared to preexercise, MVIC decreased and self-reported pain and stiffness increased at post and pos t and CK 0 48 levels increased at post (all p < 0.01). Compared to preexercise, shear-wave velocity was greater at post for the patellar 48 0 tendon [15.9 (24.6)%, p = 0.01] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Journal of Applied Physiology Springer Journals

Shear-wave velocity of the patellar tendon and quadriceps muscle is increased immediately after maximal eccentric exercise

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Biomedicine; Human Physiology; Occupational Medicine/Industrial Medicine; Sports Medicine
ISSN
1439-6319
eISSN
1439-6327
D.O.I.
10.1007/s00421-018-3903-2
Publisher site
See Article on Publisher Site

Abstract

Purpose To determine whether stiffness of the patellar tendon and quadriceps muscles is altered immediately after and 48 h after a single bout of maximal eccentric exercise of the knee extensor muscles. Methods Thirteen healthy individuals [group mean (SD) age 22.4 (3.5) years; 7 female] performed a single bout of maximal eccentric exercise of the non-dominant knee extensors, using an isokinetic dynamometer. Shear-wave velocity (an index of tissue stiffness) was recorded from the patellar tendon, vastus medialis (VM), rectus femoris (RF) and vastus lateralis (VL), before, following (post ), and 48 h after (post ) exercise. To investigate features of exercise induced muscle damage, 0 48 maximal voluntary isometric contraction (MVIC) and self-reported pain and stiffness (numerical rating scales 0 = no pain/ stiffness to 100 = worst imaginable pain/stiffness) were measured before, post , and pos t exercise. Serum creatine kinase 0 48 (CK) was measured before and post exercise. Results Compared to preexercise, MVIC decreased and self-reported pain and stiffness increased at post and pos t and CK 0 48 levels increased at post (all p < 0.01). Compared to preexercise, shear-wave velocity was greater at post for the patellar 48 0 tendon [15.9 (24.6)%, p = 0.01]

Journal

European Journal of Applied PhysiologySpringer Journals

Published: May 31, 2018

References

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