Blood flow after contraction and cuff occlusion is reduced in subjects with muscle soreness after eccentric exercise.
Delayed onset muscle soreness (DOMS) occurs within 1‐2 days after eccentric exercise, but the mechanism mediating hypersensitivity is unclear. This study hypothesized that eccentric exercise reduces the blood flow response following muscle contractions and cuff occlusion, which may result in accumul...
| Publicado en: | Scandinavian Journal of Medicine & Science in Sports (John Wiley & Sons, Inc.) Vol. 28; no. 1; pp. 29 - 40 |
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| Autores principales: | , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
John Wiley & Sons, Inc.
Jan2018
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=127336594&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 127336594 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 16000838 NRNW jtl: Scandinavian Journal of Medicine & Science in Sports (John Wiley & Sons, Inc.) issn: 16000838 maglogo: N pubinfo: dt: Jan2018 vid: 28 iid: 1 pid: 52269 pub: John Wiley & Sons, Inc. artinfo: ui: 127336594 127336594 127336594 10.1111/sms.12905 127336594 ppf: 29 ppct: 11 formats: tig: atl: Blood flow after contraction and cuff occlusion is reduced in subjects with muscle soreness after eccentric exercise. aug: au: Souza‐Silva, E. Christensen, S. W. Hirata, R. P. Larsen, R. G. Graven‐Nielsen, T. affil: Department of Health Science and Technology, Faculty of Medicine, Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg, Denmark sug: subj: Blood Pressure Cuffs Utilization Eccentric Contraction Blood Circulation Muscle Pain Human Funding Source Leg Physiology Ultrasonography, Doppler Pain Threshold Evaluation Tibialis Anterior Muscle Physiology Pain Measurement Male Female Adult Algometry Descriptive Statistics Data Analysis Software P-Value Two-Way Analysis of Variance Repeated Measures Summated Rating Scaling Kruskal-Wallis Test Post Hoc Analysis Intraclass Correlation Coefficient Confidence Intervals Adult: 19-44 years Male Female ab: Delayed onset muscle soreness (DOMS) occurs within 1‐2 days after eccentric exercise, but the mechanism mediating hypersensitivity is unclear. This study hypothesized that eccentric exercise reduces the blood flow response following muscle contractions and cuff occlusion, which may result in accumulated algesic substances being a part of the sensitization in DOMS. Twelve healthy subjects (five women) performed dorsiflexion exercise (five sets of 10 repeated eccentric contractions) in one leg, while the contralateral leg was the control. The maximal voluntary contraction (MVC) of the tibialis anterior muscle was recorded. Blood flow was assessed by ultrasound Doppler on the anterior tibialis artery (ATA) and within the anterior tibialis muscle tissue before and immediately after 1‐second MVC, 5‐seconds MVC, and 5‐minutes thigh cuff occlusion. Pressure pain thresholds (PPTs) were recorded on the tibialis anterior muscle. All measures were done bilaterally at day 0 (pre‐exercise), day 2, and day 6 (post‐exercise). Subjects scored the muscle soreness on a Likert scale for 6 days. Eccentric exercise increased Likert scores at day 1 and day 2 compared with day 0 (<italic>P</italic><.001). Compared with pre‐exercise (day 0), reduced PPT (~25%, <italic>P</italic><.002), MVC (~22%, <italic>P</italic><.002), ATA diameter (~8%, <italic>P</italic><.002), ATA post‐contraction/occlusion blood flow (~16%, <italic>P</italic><.04), and intramuscular peak blood flow (~23%, <italic>P</italic><.03) were found in the DOMS leg on day 2 but not in the control leg. These results showed that eccentric contractions decreased vessel diameter, impaired the blood flow response, and promoted hyperalgesia. Thus, the results suggest that the blood flow reduction may be involved in the increased pain response after eccentric exercise. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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