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

Heales, Luke J. ; Badya, Rohitha ; Ziegenfuss, Brandon ; Hug, François ; Coombes, Jeff S. ; van den Hoorn, Wolbert ; Tucker, Kylie ; Coombes, Brooke K.

European journal of applied physiology, 2018-08, Vol.118 (8), p.1715-1724 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Shear-wave velocity of the patellar tendon and quadriceps muscle is increased immediately after maximal eccentric exercise
Autor: Heales, Luke J. ; Badya, Rohitha ; Ziegenfuss, Brandon ; Hug, François ; Coombes, Jeff S. ; van den Hoorn, Wolbert ; Tucker, Kylie ; Coombes, Brooke K.
Assuntos: Adult ; Adult Exercise / physiology Female Humans Isometric Contraction Male Muscle, Skeletal / physiology Patellar Ligament / physiology ; Biomedical and Life Sciences ; Biomedicine ; Contraction ; Creatine ; Creatine kinase ; Exercise - physiology ; Female ; Human health and pathology ; Human Physiology ; Humans ; Isometric Contraction ; Knee ; Life Sciences ; Male ; Muscle contraction ; Muscle, Skeletal - physiology ; Muscles ; Occupational Medicine/Industrial Medicine ; Original Article ; Pain ; Patellar Ligament - physiology ; Quadriceps muscle ; Sports Medicine ; Velocity
É parte de: European journal of applied physiology, 2018-08, Vol.118 (8), p.1715-1724
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: 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 0 ), and 48 h after (post 48 ) exercise. To investigate features of exercise induced muscle damage, 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 0 , and post 48 exercise. Serum creatine kinase (CK) was measured before and post 48 exercise. Results Compared to preexercise, MVIC decreased and self-reported pain and stiffness increased at post 0 and post 48 and CK levels increased at post 48 (all p < 0.01). Compared to preexercise, shear-wave velocity was greater at post 0 for the patellar tendon [15.9 (24.6)%, p = 0.01] and RF [23.6 (16.7)%, p < 0.001], each returning to baseline by post 48 . No significant differences were observed for VL or VM post 0 or post 48 exercise. Conclusion Maximal eccentric exercise produced an immediate increase in the stiffness of the patellar tendon and RF, resolving by 48 h. As this change was not observed in VL and VM, future studies may explore heterogeneity within synergist muscles following eccentric exercise.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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

Heales, Luke J. ; Badya, Rohitha ; Ziegenfuss, Brandon ; Hug, François ; Coombes, Jeff S. ; van den Hoorn, Wolbert ; Tucker, Kylie ; Coombes, Brooke K.

Berlin/Heidelberg: Springer Berlin Heidelberg

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