TY  - JOUR
A1  - Wilke, Jan
A1  - Schwiete, Carsten
A1  - Behringer, Michael
T1  - Effects of maximal eccentric exercise on deep fascia stiffness of the knee flexors: a pilot study using shear-wave elastography
T2  - Journal of sports science & medicine
N2  - The deep fascia is intimately linked to skeletal muscle and may be involved in delayed onset muscle soreness (DOMS). The present study therefore explored the effect of eccentric exercise on fascia stiffness and its relation with DOMS. Healthy active male adults (n = 19, 27 ± 4 years) performed 6 x 10 maximal eccentric knee flexions using an isokinetic dynamometer. Before (baseline) as well as immediately (T0), 1 hour (T1), and each day up to 72 hours (T24 to T72) afterwards, shear wave elastography was used to measure the mechanical stiffness of the biceps femoris muscle and the overlying fascia. As a surrogate of DOMS, pain upon palpation was captured by means of a 100mm visual analogue scale. While muscle stiffness remained unchanged (p > 0.05), deep fascia stiffness increased from baseline to T24 (median: 18 kPa to 21.12 kPa, p = 0.017) and T72 (median: 18 kPa to 21.3 kPa, p = 0.001) post-exercise. Linear regression showed an association of stiffness changes at T24 and pressure pain at T72 (r2 = 0.22, p < 0.05). Maximal eccentric exercise leads to a stiffening of the fascia, which, in turn, is related to the magnitude of future DOMS. Upcoming research should therefore gauge the effectiveness of interventions modifying the mechanical properties of the connective tissue in order to accelerate recovery.
KW  - DOMS
KW  - ultrasound
KW  - fatigue
KW  - connective tissue
KW  - exercise
Y1  - 2022
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/75186
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-751865
SN  - 1303-2968
N1  - Gefördert durch den Open-Access-Publikationsfonds der Goethe-Universität
VL  - 21
SP  - 419
EP  - 425
PB  - Department of Sports Medicine, Medical Faculty of Uludag University
CY  - Bursa, Turkey
ER  -